RE: [Repeater-Builder] Re: Can we tuning duplexer with this equipment?

[Jim Cicirello]

Hey Skip, for those of us who have a service monitor without a Spectrum
Analyzer built in, is there an alternative to using a radio with an S-meter
on the duplexer end to see the peak and notch? I was wondering if an RF
Meter would be sensitive enough to pick up the peak of the regular output of
a service monitor? Would this be better in that we are taking another
receiver out of the mix or would we be better to figure how to put an analog
S Meter on a scanner or some type of stable receiver? Also with an variable
output from say a service monitor, what do you use the attenuator pads for
and where. Thanks for sharing your knowledge and experience. I only need to
turn a few times a year and have an IFR1200A so I have a stable output, I
just need to see the peak and notch. 

 

73 JIM  KA2AJH   

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of skipp025
Sent: Wednesday, December 23, 2009 12:36 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Can we tuning duplexer with this equipment?

 

  

If you have a decent radio with some type of receive signal 
strength indicator, some coax cables a separate transmitter 
radio (an HT would work) and some attenuator pads from Ebay... 
you could do it. 

s. 

> Azam <9w2...@...> wrote:
>
> found this simple and cheap rf measurement kit at
> http://www.foxdelta.com/products/pm3.htm
> can it be use to tune a duplexer?
> 
> rgds
> azam
> 
> 
> > 
> >
>

RE: [Repeater-Builder] Maxtrac five pin Connector

[Jim Cicirello]

Thanks for the reply Eric. Now I understand the difference.

 

73 JIM  KA2AJH

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Eric Vincent
Sent: Sunday, December 20, 2009 4:29 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Maxtrac five pin Connector

 

  

Hello Jim,

 

The right way to look the connector is from the back of the radio, and the
pinout for J3 is 5,4,3,2,and1 (Pin 5 is close from 12 Volts power connector
and 1 to the outside of the radio)

 

Top of radio

/

/  5  4  3  2  1 /

/

 

Batlabs give the pinout with schematic diagram and Repeater Builder give the
pinout with Masked Logic Board Circuit Board, 2 different pages on the
service manual.

 

73’ Eric VE2VXT

 

  _  

De : Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] De la part de James
Envoyé : 20 décembre 2009 11:57
À : Repeater-Builder@yahoogroups.com
Objet : [Repeater-Builder] Maxtrac five pin Connector

 

  

On batlabs http://www.batlabs.com/images/maxacc2.gif
it shows the five pin connector with pin one towards edge of radio and
numbers going 1,4,2,3,5.
On Repeater Builder
http://www.repeater-builder.com/maxtrac/maxtrac-option-plug.html
it shows number one pin towards the outside of the radio and the pins going
1,2,3,4,5.
Has anyone notices the difference and know why BatLabs has it that way?

Thanks in advance.

JIM KA2AJH


__ Information from ESET NOD32 Antivirus, version of virus signature
database 4704 (20091220) __

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com



__ Information from ESET NOD32 Antivirus, version of virus signature
database 4704 (20091220) __

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com

RE: [Repeater-Builder] Maxtrac five pin Connector

[Jim Cicirello]

Thanks Eric, maybe I will suggest to Batlabs that a note would be
appropriate before someone used the pins as numbered.

 

73 JIM  KA2AJH

 

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Eric Lemmon
Sent: Sunday, December 20, 2009 3:27 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Maxtrac five pin Connector

 

  

Jim,

The problem here is that the pin numbers shown on the schematic diagram in
the MaxTrac manual are not in their physical order. In fact, the pins are
numbered 1-2-3-4-5, with Pin 1 closest to the side of the radio.

73, Eric Lemmon WB6FLY


-Original Message-
From: Repeater-Builder@yahoogroups.com
 
[mailto:Repeater-Builder@yahoogroups.com
 ] On Behalf Of James
Sent: Sunday, December 20, 2009 11:57 AM
To: Repeater-Builder@yahoogroups.com
 
Subject: [Repeater-Builder] Maxtrac five pin Connector

On batlabs http://www.batlabs.com/images/maxacc2.gif
 
it shows the five pin connector with pin one towards edge of radio and
numbers going 1,4,2,3,5.
On Repeater Builder
http://www.repeater-builder.com/maxtrac/maxtrac-option-plug.html
 
it shows number one pin towards the outside of the radio and the pins going
1,2,3,4,5.
Has anyone notices the difference and know why BatLabs has it that way?

Thanks in advance.

JIM KA2AJH

RE: [Repeater-Builder] Henry Repeater Amp or TE Systems

[Jim Cicirello]

We have had a Henry 5-10 in 100 plus out in service on a UHF Community
Repeater. Bought it fifteen years ago this last July and have had it
serviced twice in fifteen years..NOT BAD IN MY OPINION. And best of all Ted
Henry is only a phone call or E-Mail away to help with questions.

 

73 JIM   KA2AJH

 

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Kevin Berlen, K9HX
Sent: Sunday, December 20, 2009 2:19 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Henry Repeater Amp or TE Systems

 

  

I have no experience with the TE Systems product, but have had good
experience with the Henry products. We have
had a 25W in, 100W out UHF Henry amp on a busy community repeater for the
last 10 years and have had no problems.
This is on a high-density site, and it also does not cause any intermod for
the other users on site. 

Kevin, K9HX

At 09:44 PM 12/19/2009, you wrote:

  

Okay all, looking for opinions.

Our club is going to purchase a 220 amplifier and a 440 amplifier for our
repeaters.

For 220, we're looking at either the TE Systems 2210RAN or the Henry
C100B10R
For UHF, it's either the TE Systems 4412RA or the Henry C100D30R.

We have a Henry C300C30R in use for about 3-1/2 years now (running it at
250w output) on our 6-meter repeater and had to send it in about 13 months
into its life to have the finals replaced.  No problems since, though.  I
was pleased with Henry's response to the problem.  Even though it was out of
warranty, they fixed it under warranty.

Though the TE systems amplifiers have more output (150w vs 100w), I have
concerns about their reliability.  The local D* repeater has had a lot of
problems with their VHF amplifier, and it's not very clean (of course, that
could be the fault of the D* repeater transmitter, too!).

What are your opinions, TE Systems vs Henry?  

-- 
James Adkins, KB0NHX
Vice-President -- Nixa Amateur Radio Club, Inc. (KC0LUN)
www.nixahams.net

Southern Missouri Assistant Frequency Coordinator - Missouri Repeater
Council
www.missourirepeater.org

The Nixa Amateur Radio Club - "There is no charge for awesomeness!" (Well,
only $1.00 per month)


No virus found in this incoming message.
Checked by AVG - www.avg.com   
Version: 9.0.717 / Virus Database: 270.14.114/2575 - Release Date: 12/19/09
03:33:00

 

RE: [Repeater-Builder] Motorola Spectra Power Cord Reversal

[Jim Cicirello]

If you don't find anything bad in the A-Line like some have suggested, check
out the fuse in the control head. As you pull the head I remember one in the
top left corner as you look at the component side of the head. They are
miniature and can be easily checked. I just can't remember if there is a
second. But you should be able to tell.

Good Luck.

JIM  KA2AJH

 

 

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Stephen M. Parker,
WR9A
Sent: Sunday, December 13, 2009 4:24 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Motorola Spectra Power Cord Reversal

 

  


Okay, so I'm a klutz. I wired up the power connector in reverse with no fuse
in the line. Needless to say, the radio won't even power on now.

Anyone have any idea just how extensive the damage might be? Possible for a
Motorola-neophyte to repair himself? I have only basic component-level
troubleshooting skills and no service manual. Any advice appreciated.
___
Stephen, WR9A - Lafayette, Indiana
Email: shortwave (AT) verizon -DOT- net 
___

RE: [Repeater-Builder] Price Check on aisle five.....

[Jim Cicirello]

Just a thought, 3/8” may be hard to get connectors for? I would think
you could get ½”   for the same price and half inch connectors are available
and if you look around , available at a good price. I am going thru getting
connectors for 5/8” and they are rare and EXPENSIVE.  Something to check
into.

 

Good Luck  73 JIM  KA2AJH   

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of hitekgearhead
Sent: Tuesday, December 08, 2009 2:38 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Price Check on aisle five.

 

  

Hey guys,
I have the opportunity to purchase some surplus Andrew heliax.

The model is EFX2RN-50. It is 3/8"

At $0.50/foot, is this a good deal? I don't think connectors are installed.

I am thinking of using it for amateur use on the VHF & UHF bands at home.

What do you think?

-Albert

RE: [Repeater-Builder] Astron RM-35M AGM charging abilities?

[Jim Cicirello]

Hi Eric,

I have been trying to follow these posts on battery back power. Under this
arrangement you describe, will the supply not get hot with the Schottky
Diode in place if the battery is discharged very low? 

I am researching the best way to hook the battery to my Astron which does
not have the back-up charger. 

Thanks for all of the information.

 

73 JIM  KA2AJH  

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Mike Lyon
Sent: Monday, December 07, 2009 12:45 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Astron RM-35M AGM charging abilities?

 

  

Sorry. Yes, it's a -BB version.

-Mike



On Mon, Dec 7, 2009 at 9:31 AM, Eric Lemmon  wrote:

  

Mike,

I thought that only the RM-35M-BB has a battery backup circuit built-in; I
have an RM-35M power supply in service, and it does not have a battery
charging circuit.

A very simple method of achieving no-break battery backup is to install a
Schottky power diode on the positive output terminal of the power supply,
and connect both the battery positive terminal and the radio power leads to
the cathode lug of the diode. My preferred Schottky diode for this
application is an International Rectifier 122NQ030R. The diode is mounted
on a 1" wide copper bar that is placed on the power supply's positive output
stud. The diode has a 1/4" output terminal, which makes it very easy to add
to an existing system. Note that the "R" in the diode part number means
that it is reverse polarity. The output voltage setting of the power supply
must be increased about 1/2 volt to compensate for the forward voltage drop
of the Schottky diode. The voltage should be set so that the AGM battery
has the recommended float voltage at its terminals while the radios are
operating and the system has stabilized at least 24 hours. This voltage
will usually be around 14.2-14.5 VDC, depending upon the battery
specifications.

73, Eric Lemmon WB6FLY




-Original Message-
From: Repeater-Builder@yahoogroups.com
 
[mailto:Repeater-Builder@yahoogroups.com
 ] On Behalf Of Mike Lyon
Sent: Sunday, December 06, 2009 10:02 PM
To: Repeater-Builder@yahoogroups.com
 
Subject: [Repeater-Builder] Astron RM-35M AGM charging abilities?

Howdy Folks,

I am wondering if anyone has experience with the Astron RM-35M and its
built-in charging circuit? Has anyone used it to charge 12VDC AGM batteries?
I have 3 motorola Maxtracs (2 RX, 1 TX) that are powered from this power
supply and I need to put some backup power on the system. 

I am wondering, should I buy a separate charger for the AGM batteries (Qty.
2) or is the charging circuit within the the RM-35M sufficient?

73's,
Mike Lyon
KE6MRE



 

RE: [Repeater-Builder] Antenna question

[Jim Cicirello]

John,

It sounds like you already have a G7?  How old is it and how does it
operate? I am trying to figure out how it stood up to your WX Elements. My
two cents….In WNY on the highest hill in Allegany County I had and still
have a G7. I had it up for about seven years at 160’ until I got a used
stationmaster and used the Repeater-Builder Article to bring it down in
frequency to 147 MHz At that point we pulled the G7 put up the Stationmaster
and also increased the cable from ½” to 7/8”. The G7 was cleaned up and put
back on the tower at about 60’ for packet. The antenna was side mounted and
we used a PVC “T” and piece of PVC Pipe to stabilize the top from whipping
around. I would never top mount one. Also there are two weak points in my
opinion, one being  the radials. If I ever put up a new G7 I will replace
the Radials with solid aluminum, as the hollow stock radials are fragile.
The coaxial connector is also fragile. We had a tower crew, put a G7 on a
commercial tower and they broke the connector right out of the base
installing he pigtail. We sent the next one up with the pig tail installed
and weatherproofed on the ground which I recommend. We have another one in
G7 in Pa. on top of a radar tower and that  has been in service for 12 plus
years. My experience has been good as I have been where you are that you
have to do with what you can afford.

73 JIM  KA2AJH  

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of W3ML
Sent: Sunday, October 11, 2009 10:09 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Antenna question

 

  

Hi again,

We are looking to replace that used antenna after getting 100 feet of new
Andrews 1/2" donated to our club.

Now I realize that the DB type antenna is the best, but we do not have 800
bucks to buy one.

So, my question is should we just get a new G7-144 to replace the used G7 or
is there another type of vertical that we could get that would be good.

Being in North Indiana, our winters can be quite brutal, so we would
probably want something durable.

Any suggestions.
73
John, W3ML

RE: [Repeater-Builder] Re: ARRL Approves Study Committee to Research & Develop Plan for Narrowband Channel Spacing

[Jim Cicirello]

Tim,

You are correct. The regular run of the mill Spectra sells for about $100.00
and is not narrow band capable. There are many Astro Spectras that do many
modern things such as digital, but used are about $600.00. 

 

73 JIM   KA2AJH  

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of afa5tp
Sent: Friday, October 02, 2009 2:07 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: ARRL Approves Study Committee to Research &
Develop Plan for Narrowband Channel Spacing

 

  

I was under the impression that the "Astro Spectra" was capable of "Narrow
Band" operation.

Tim Hardy
W7TRH/AFA0TP

--- In Repeater-Builder@yahoogroups.com
<mailto:Repeater-Builder%40yahoogroups.com> , "Jim Cicirello" 
wrote:
>
> We must look far beyond the repeater that we narrow band. What about the
> linked systems? We would no longer be able to use the favorite Maxtrac or
> Radius for Link Radios as there is no narrow band kits available.
Thousands
> of these units will be taken out of commercial use, and I was looking
> forward to getting this equipment for ham use. Then there is the popular
> Spectra that many of us are using for Mobile and Base Radios in the ham
> band. They are Superior to the ham grade radios in selectivity, audio,
etc,
> but again they will not narrow band. Let's not loose site that this
decision
> will cost us big bucks above and beyond the price of Narrow Banding the
> repeater to keep our systems going. 
> 
> 
> 
> Comments please..Jim KA2AJH 
> 
> 
> 
> From: Repeater-Builder@yahoogroups.com
<mailto:Repeater-Builder%40yahoogroups.com> 

RE: [Repeater-Builder] ARRL Approves Study Committee to Research & Develop Plan for Narrowband Channel Spacing

[Jim Cicirello]

We must look far beyond the repeater that we narrow band. What about the
linked systems? We would no longer be able to use the favorite Maxtrac or
Radius for Link Radios as there is no narrow band kits available. Thousands
of these units will be taken out of commercial use, and I was looking
forward to getting this equipment for ham use. Then there is the popular
Spectra that many of us are using for Mobile and Base Radios in the ham
band. They are Superior to the ham grade radios in selectivity, audio, etc,
but again they will not narrow band. Let's not loose site that this decision
will cost us big bucks above and beyond the price of Narrow Banding the
repeater to keep our systems going. 

 

Comments please..Jim  KA2AJH   

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Kevin King
Sent: Friday, October 02, 2009 9:58 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] ARRL Approves Study Committee to Research &
Develop Plan for Narrowband Channel Spacing

 

  

I agree we do not need to make more "pairs" everywhere. But let's face it.
We build from the left over's from the commercial world. Ok some of you buy
all new latest, etc. At some point most of the gear is going to be narrow. 

Do any of the older operators remember moving to "narrow" band before? 

Let's set the politics aside and see what this change can add? Obviously we
have a transition period. Can we have a dual input machine with wide and
narrow IF's? Maybe a wide PL and narrow PL? Does narrow banding offer us
anything in improvements? Will it help us in noisy RF sites? 

Can we teach or make kits for users to modify their rigs?

Not looking for a flame war, just stimulating some positive discussion. :)

-Kevin

-Original Message-
From: Repeater-Builder@yahoogroups.com
 
[mailto:Repeater-Builder@yahoogroups.com
 ] On Behalf Of Chuck Kelsey
Sent: Friday, October 02, 2009 9:32 AM
To: Repeater-Builder@yahoogroups.com
 
Subject: Re: [Repeater-Builder] ARRL Approves Study Committee to Research &
Develop Plan for Narrowband Channel Spacing

I agree, that's the political side of the problem. I don't see that there is

a true NEED for more pairs in amateur service. There IS a need in the 
commercial/public safety world.

Chuck
WB2EDV

- Original Message - 
From: "Cort Buffington" mailto:cort%40lawrence-ks.org> >
To: mailto:Repeater-Builder%40yahoogroups.com> >
Sent: Friday, October 02, 2009 9:23 AM
Subject: Re: [Repeater-Builder] ARRL Approves Study Committee to Research & 
Develop Plan for Narrowband Channel Spacing

To wrap this around to repeaters Where I live, which is admittedly
not, say, California... there isn't a real spectrum problem on any of
the FM repeater bands (if I may use such a term). There is a slight
problem in some areas with the so-called "paper repeaters", but that's
not a reason to narrow-band. It might be a reason to actually give
coordination to those who really will keep a repeater up and
operational, but not to narrow-band.

Is there a reason to do this other than creating more channels? And
how many places desperately need the channels -- as in, even if the
repeater pairs are all full, are the repeaters being used?

Just a thought...
73 DE N0MJS



Yahoo! Groups Links

[Repeater-Builder] RE: RSSI VOLTAGE

[Jim Cicirello]

Eric,

 After reading this article,  I have searched everywhere  I could  to learn
about RSSI Meters. I found the Signal Meter by Mark Weiss built  around the
LF353 JFET Op-Amp. Can you elaborate on this meter, such as where does it
hook to the radio being tuned or the radio being used to tune a Duplexer or
Filter? One article mentioned the IF Section of the radio. On the schematic
for the meter it states RSSI Input and at that point it has a couple of caps
for Preemphasis for Audio Use, which I thought may indicate the
Discriminator Output of the radio. As you may know, there is not a lot of
information out there. I have a SINAD Meter and I would like to know if this
can be as user friendly and give me more precise readings. 

Thanks for your information, help and patience with us who want to learn how
to do things a little better with the with equipment we have or in this case
can build.

 

73 JIM   KA2AJh 

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Eric Lemmon
Sent: Sunday, September 20, 2009 1:53 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] UHF Duplexers

 

  

Terry,

In lieu of the ideal bench equipment, yes, the IC-2710 is better than a
handheld, since its impedances are supposed to be close to 50 ohms at the
connector. You are to be commended for your creativity in making do with
what you have. Since your duplexer has been moved from its original
settings, you can only improve matters.

Let's review your process: You generate your 449.625 MHz receive signal
with the service monitor, and inject it into the duplexer's antenna
connector, with your monitoring radio set to 449.625 MHz and connected to
the RX (high pass) connector of the duplexer, and a 50-ohm dummy load on the
TX (low pass) connector of the duplexer. The SINAD input of your service
monitor is connected to the monitoring radio's speaker, and you adjust the
center rods of the high-pass cans to get 12 dB SINAD with the lowest level
signal at the RX connector.

Next, without changing any of the connections, you set the service monitor
to generate 444.625 MHz and program the monitoring radio to receive 444.625
MHz. With your service monitor generating the highest-level signal possible
(at least 0 dBm, but higher is better), you adjust the notch capacitors on
both high-pass cans to minimize the received signal. You might get better
results by monitoring the RSSI voltage at the radio. Do not move the
threaded tuning rods at all.

SNIP

RE: [Repeater-Builder] COR board for simple repeater??

[Jim Cicirello]

I cut and pasted both and sent to two friends I was talking with and all
three of us got an advertisement page several times. Now I got it back
again. Thanks for the offer, we were just talking about the circuit.

 

73 JIM  

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of D. Daniel McGlothin,
KB3MUN
Sent: Saturday, September 05, 2009 10:22 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] COR board for simple repeater??

 

  

[Shrug] It just worked for me. ;) 

I archived copies of the simple interface pages...can I answer any 
questions for you?

73 de Daniel KB3MUN

Jim Cicirello wrote:
>
>
> Hey guys did this site change? I looked it up and it was there, 
> checked it again all I see is ads.
>
> 
>
> 73 JIM 
>
> 
>
> *From:* Repeater-Builder@yahoogroups.com
<mailto:Repeater-Builder%40yahoogroups.com>  
> [mailto:Repeater-Builder@yahoogroups.com
<mailto:Repeater-Builder%40yahoogroups.com> ] *On Behalf Of *D. Daniel 
> McGlothin, KB3MUN
> *Sent:* Thursday, September 03, 2009 7:19 PM
> *To:* Repeater-Builder@yahoogroups.com
<mailto:Repeater-Builder%40yahoogroups.com> 
> *Subject:* Re: [Repeater-Builder] COR board for simple repeater??
>
> 
>
> 
>
> Perhaps I'm misunderstanding what you are looking for.
>
> The bottom two images at
> <http://www.hs9dmc.com/repeater/vox/handy-to-handy_kitchen-house.htm> 
> seem to show the two HTs linked by the dual circuit shown on the page 
> using the speaker and mic jacks.
>
> A different circuit shown on
> <http://www.hs9dmc.com/repeater/repeater_handy2way.htm> appears to be
> wired directly to the HT circuit boards.
>
> 73 de Daniel KB3MUN
>

RE: [Repeater-Builder] COR board for simple repeater??

[Jim Cicirello]

Hey guys did this site change? I looked it up and it was there, checked it
again all I see is ads.

 

73 JIM   

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of D. Daniel McGlothin,
KB3MUN
Sent: Thursday, September 03, 2009 7:19 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] COR board for simple repeater??

 

  

Perhaps I'm misunderstanding what you are looking for.

The bottom two images at 
 seem
to show the two HTs linked by the dual circuit shown on the page using the
speaker and mic jacks. 

A different circuit shown on 
 appears to be 
wired directly to the HT circuit boards.

73 de Daniel KB3MUN

gervais wrote:
> Well Daniel
> it helped me a lot
> i can see the little interface between the 2 portable radios
> it is what i need,but he is not using the 2 connectors on the radio,
> the mic and speaker 
>
> 
>
> thanks
> gervais ve2ckn
>
>
> --
> From: "D. Daniel McGlothin, KB3MUN" mailto:kb3mun%40mcglothin.us> >
> Sent: Thursday, September 03, 2009 7:19 AM
> To: mailto:Repeater-Builder%40yahoogroups.com> >
> Subject: Re: [Repeater-Builder] COR board for simple repeater??
>
> 
>> Azman may have been referring to this link for HT to HT:
>>
>> http://www.hs9dmc.com/repeater/vox/handy-to-handy_kitchen-house.htm
>>
>> The schematic and pictures transcend the language barrier.
>>
>> The second grouping from the bottom seems to be the collection of 
>> repeating interfaces. Hovering the mouse over the links will show the 
>> link name in the status bar. From that, you can determine the content 
>> of the other links in the group.
>> 

RE: [Repeater-Builder] Tram 1481 Dual Band UHF/VHF Antenna

[Jim Cicirello]

Tom,

Thanks for the information. This gives us an idea of what to expect when we
tear it down. We might find a combination of these things that is giving us
the problem.

 

73 JIM  KA2AJH  

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Tom W2MN
Sent: Monday, August 31, 2009 4:32 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Tram 1481 Dual Band UHF/VHF Antenna

 

  

JIM KA2AJH,

 

I use the TRAM 1480 (also Workman version) in several installations and they
all work well. I have not had any problems or failures. The 1481 has
additional collinear sections on top (making it about 6 ft taller).  The
TRAM and WORKMAN antennas are ELECTRICALLY similar to DIAMOND and COMET
(I've had some completely apart). There are some mechanical differences
which might make the D and C brands a little more durable in severe weather
areas. I don't think they are worth the extra price.  Now, they all are DC
ground but not in the way we all think when compared to a J Pole. The
antenna element is internally grounded through the coil in the base but
capacitively coupled to the coax center conductor. So, if you look for a DC
connection between center conductor and ground, you will think it is open
circuit (but is not). Now, all of these very tall antennas tend to be very
whippy. With the very low launch angle (particularly on 440) any strong wind
will cause the signal strength to vary considerably with the wind. 

 

You might consider taking it completely apart (easy job) and examining for
water (moisture) and any evidence of bad solder, broken connections or burn
marks from lightning discharge.

 

I have rebuilt a DIAMOND X500 that failed after many years. The problem was
that the fiberglass wore thin and allowed moist air to condense onto the
internal foam rattle insulators. They all seem to use common pieces of soft
packing foam that acts like a small sponge. Replacing these and repainting
the fiberglass (white or light gray PLASTIC spray paint) fixed the problem.
The point is, all 4 brands are at risk of the same long term problem.

 

Tom

RE: [Repeater-Builder] UHF Connectors for 1/2 Andrew Superflex

[Jim Cicirello]

Tony,


I just took a piece of ½” Superflex that previously had a connector on it
and tried to place a PL259 UHF MALE  on it. The corrugation on the superflex
is larger than the ID of the connector. The connector will go over the
center dielectric but the copper corrugation on the superflex is slightly
larger than the outside of the UHF Male. The only way I can see it may be
possible to join the connector to the cable would be to have a sleeve extend
over the superflex and the outside of the UHF connector and then solder the
sleeve. This might not be as good of an idea as getting proper connectors
that fit the superflex like the N Male and use an adapter to get to UHF. 


 


Good Luck  JIM  KA2AJH  


 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Tony KT9AC
Sent: Monday, August 31, 2009 12:51 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] UHF Connectors for 1/2 Andrew Superflex

 

  

Hello Everyone,
I need to make some short jumpers UHF-male to UHF-male and have a 
length of 1/2 Andrew Superflex on order (actually eBay). Can I use 
regular silver-teflon PL259's with this cable, similar to how 1/4" 
superflex is used with the reducer? I can't find UHF Male connectors for 
1/2" superflex at Tessco.

Thanks,
Tony

RE: [Repeater-Builder] Nearby Repeaters

[Jim Cicirello]

Can't explain it Joe. All I can tell you is that our 7.21 2-Meter Repeater
had users in weak signal areas completely wiped out when the community
repeater and the fire transmitter came up when they were on 2-meters. As I
said we changed the PL's and that is ALL I did and now the same stations
talk away and there is NO noise on 2 meters. Also the service tech says it
cleared up noise on the fire 154.295 and I can tell you that the community
repeater is OK now, the noise that came in on 151.4 does NOT come in on any
other CTCSS. Break thru in RF physics, probably just dumb luck, which I am
not use to.

JIM  

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of MCH
Sent: Sunday, August 30, 2009 12:02 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Nearby Repeaters

Again, explain how the mixing products or intermod changed.

If that's true, maybe you're really on to something. If I can eliminate 
intermod by changing the PL tone or the CWID, that would be an 
incredible breakthrough in RF physics.

Joe M.

Jim Cicirello wrote:
> 
> 
> I can tell you that the same tones on different frequencies inside the 
> same site can cause a problem. My 2-meter repeater was on 151.4, the 
> same tone as the local high band fire and channel on the  VHF community 
> repeater. When a combination of the units with 151.4 came up, I had 
> inter-mod on my 2-meter machine. Also at times there was noise on the 
> fire that we could tell disappeared when the 2-meter dropped along with 
> the community repeater.  Luckily I own the tower so I was able to move 
> my 2-meter repeater to 123.0 and it happened that my private channel on 
> the community repeater was also 151.4 which I also changed.  Now I try 
> to make sure that every PL inside my site is different. Since there is 
> NO two PL's the same, the problem went away. Our Motorola Tech told me 
> this is common at tower sites using the same PL on different frequencies.
> 
>  
> 
> 73 JIM
> 
>  
> 
> *From:* Repeater-Builder@yahoogroups.com 
> [mailto:repeater-buil...@yahoogroups.com] *On Behalf Of *WA3GIN
> *Sent:* Sunday, August 30, 2009 9:07 AM
> *To:* Repeater-Builder@yahoogroups.com
> *Subject:* [Repeater-Builder] Nearby Repeaters
> 
>  
> 
>  
> 
> Looking for opinions. 
> 
>  
> 
> Our club has a couple of 2m repeaters; we chose to run them with PL and 
> we picked 107.2 because that tone freq. was not in use in the area.  
> Recently two other clubs who also have 2m repeaters have decided to 
> utilze the same PL tone freq. 
> 
>  
> 
> Does having numerous repeaters PL'd with the same tone freq. increase 
> the probability of the normally generated intermod/mixed signal to 
> now carry within the produced signal  a correct  PL tone that may land 
> on the input freq. of another local repeater?  Is it considered a bad 
> practice to utilize the same PL for numerous repeaters in the same band 
> all located within a few miles of each other?
> 
>  
> 
> Thanks,
> 
> dave
> 
> wa3gin
> 
> 
> 
> 






Yahoo! Groups Links

RE: [Repeater-Builder] Nearby Repeaters

[Jim Cicirello]

I can tell you that the same tones on different frequencies inside the same
site can cause a problem. My 2-meter repeater was on 151.4, the same tone as
the local high band fire and channel on the  VHF community repeater. When a
combination of the units with 151.4 came up, I had inter-mod on my 2-meter
machine. Also at times there was noise on the fire that we could tell
disappeared when the 2-meter dropped along with the community repeater.
Luckily I own the tower so I was able to move my 2-meter repeater to 123.0
and it happened that my private channel on the community repeater was also
151.4 which I also changed.  Now I try to make sure that every PL inside my
site is different. Since there is NO two PL's the same, the problem went
away. Our Motorola Tech told me this is common at tower sites using the same
PL on different frequencies.

 

73 JIM 

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of WA3GIN
Sent: Sunday, August 30, 2009 9:07 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Nearby Repeaters

 

  

Looking for opinions.  

 

Our club has a couple of 2m repeaters; we chose to run them with PL and we
picked 107.2 because that tone freq. was not in use in the area.  Recently
two other clubs who also have 2m repeaters have decided to utilze the same
PL tone freq.  

 

Does having numerous repeaters PL'd with the same tone freq. increase the
probability of the normally generated intermod/mixed signal to now carry
within the produced signal  a correct  PL tone that may land on the input
freq. of another local repeater?  Is it considered a bad practice to utilize
the same PL for numerous repeaters in the same band all located within a few
miles of each other?

 

Thanks,

dave

wa3gin

RE: [Repeater-Builder] 2M Vertical Dipoles

[Jim Cicirello]

Chuck, Would that be with the dipoles all pointed in the same direction, of
set up so they face different directions for Omni reception. I picked up an
almost new DB224 but no mast so I am following this thread with interest.

73 JIM  KA2AJH

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Chuck Kelsey
Sent: Sunday, August 09, 2009 7:43 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] 2M Vertical Dipoles

 

  

That will work well to favor one area.

Chuck
WB2EDV

- Original Message - 
From: "MCH" mailto:mch%40nb.net> >
To: mailto:Repeater-Builder%40yahoogroups.com> >
Sent: Sunday, August 09, 2009 7:40 PM
Subject: Re: [Repeater-Builder] 2M Vertical Dipoles

> DOH! Let me rephrase that...
>
> Lots of comments on the omnidirectional pattern which I suggested might
> not work well.
>
> Any comments on having the elements on one side of the tower right on
> the leg?
>
> Joe M.
>
> MCH wrote:
>> Lots of comments on the unidirectional pattern which I suggested might
>> not work well.
>>
>> Any comments on having the elements on one side of the tower right on
>> the leg?
>>
>> Joe M.
>>
>> n...@no6b.com   wrote:
>>> At 8/9/2009 05:47, you wrote:
>>>
>>>
 As frequency decreases, so does the importance of keeping the dipoles
 exactly above one another. This is why you can get away with mounting 
 the
 bays of a LB array around a smaller tower (like Rohn 25) and still have
 very good omni-directional performance. Positioning the bays around a
 central supporting mast of a UHF array creates considerable pattern
 distortion and gain is lost.
>>> I once modeled this arrangement in NEC-Win: the resulting pattern looked
>>> like a warped pancake. On-horizon gain was all over the place.
>>>
>>> Bob NO6B
>>>
>>>
>>>
>>> 
>>>
>>>
>>>
>>> Yahoo! Groups Links
>>>
>>>
>>>
>>>
>>
>>
>> 
>>
>>
>>
>> Yahoo! Groups Links
>>
>>
>>
>>
>
>
> 
>
>
>
> Yahoo! Groups Links
>
>
>

RE: [Repeater-Builder] Spectra acc pin #9 a COR?

[Jim Cicirello]

You will need to do some modifications to get COR from the Spectra. See this
article, we have used it to get CAS/COR.

 

http://www.repeater-builder.com/motorola/spectra/spectra-cor.html

 

Sounds like a project in progress. Don't forget to keep the speaker output
above ground or you blow the Audio Chip. We have been using 1:1 Transformers
between units to save the Audio Chips.

 

Good Luck.JIM  KA2AJH

 

 

 

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Mike Lyon
Sent: Saturday, June 13, 2009 12:46 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Spectra acc pin #9 a COR?

 






Howdy All,

So I am trying to get a COR out of the Spectra A5. Would pin #9 be the best
way of getting it?

Thanks,
Mike

RE: [Repeater-Builder] Replacing an ge master 2 PA by an Moto 100 watts HD

[Jim Cicirello]

The exciters driving the MASTR II is lower than the Micor. I believe the
Mastr II is 250 MW and the Micor is 400 MW and sometimes a little more. 

Just an observation. I tried a MASTR II on my Micor and before I got another
Micor PA, the MASTR II failed, I believe due to overdrive. 

73 JIM   

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of gervais
Sent: Tuesday, March 31, 2009 6:42 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Replacing an ge master 2 PA by an Moto 100 watts
HD

 

Hi all

is there anyone outhere that ever done this?

exchange an Master 2 ,100 watts PA for an big HD PA from an MIcor repeater
???

 

i have many big HD PA for the Micor and if only i could fit one on my MAster
2 i would be happy!

 

thanks for your help

gervais ve2ckn

 

[Repeater-Builder] KENWOOD TK-630H Tuned to 10 Meters for RB

[Jim Cicirello]

Hello to the group.
I just programmed my 630 for the Ten Meter Band using the SP Tune feature. 
Before I got a chance to tune the VCO/PLL TC51, 52 PLL lock voltage, the unit 
went into transmit. When it does come out of TX for a few seconds, it shows 
BUSY. I have tried to touch the the PLL but it has no effect. 
The unit was working on 34 MHZ and there is nothing hooked to the outside world 
to force PTT. The fact that it does cycle out of PTT for a few seconds, 
indicates to me there is not a component failure in the PTT Line.
Any ideas would be greatly appreciated. Thanks in advance.

JIM   

[Repeater-Builder] Alcatel Isolator Panel * 148-164 Mhz

[Jim Cicirello]

For those of us who missed the boat or bid on the lower frequency
Alcatel Isolator Panels on E-Bay, I see the seller has more at a
higher operating frequency 148-164. 
My question to Skipp and others who are familiar with these is:
For those of us who have Ham Transmitters in the 147 MHz 2-meter Band,
are these close enough to work? Also mare they tunable or fixed for
the entire range?
Thanks in advance for the guidance. 

73 JIM  KA2AJH   

FW: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies

[Jim Cicirello]

Doug,

Did these radios relay thru the squad, towers, or were they direct to the
ER?  Always wondered.

 

73 JIM  KA2AJH  Wellsville, NY

 

 

 

From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Doug Dickinson
Sent: Monday, December 22, 2008 12:49 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: OT: Radios and Coms in TV and Movies

 

I do remember a little about the radios they used on the series. The "Orange
Box duplex paramedic radio was the original Motorola adventure into the
medical telemetry function. SNIP..

 

Doug
Seattle now
Florida back then
EMT for 29 years

 

Re: [Repeater-Builder] Re: New Repeater Desense Problems

[Jim Cicirello]

Build a simple RF sampler for the Bird Model 43 Thruline Wattmeter
By Kevin K. Custer  W3KKC


http://www.repeater-builder.com/projects/bird43sampler.html


- Original Message - 
From: "Wayne" <[EMAIL PROTECTED]>
To: 
Sent: Saturday, July 19, 2008 4:41 PM
Subject: Re: [Repeater-Builder] Re: New Repeater Desense Problems


>  I am wondering if a person could make an Iso Tee for a bird? I may have a
> slug that could be used as a basis for one, as I picked up several damaged
> slugs in an alley once. May have to possibly unbend one to get an okay
> fit, don't want to have to force one into my baby.
>  Sometimes I wish that the dummy slug(s) that originallycame with mine had
> not been misplaced.
>  My brother sold it to me a few years back, and the dummy slug(s) were not
> in with it.
>  Mine never got abused, as I bought it new for my brothers shop.
>  Anyway, an Iso Tee might be a good addition once I get a shop fixed up.
>
> And hoping I never come up with a desense problem when I set up a
> secondart repeater here.
>
>  Wayne WA2YNE
>
> On Tue, 08 Jul 2008 22:47:18 -0500, de W5DK <[EMAIL PROTECTED]> wrote:
>
>> I think he was Laryn. I could see an argument that it may not have been
>> aligned and caused the situation. But,,
>>
>>
>>  In this case the matching circuit was installed and set properly, also
>> the
>> duplexers and all were perfect. The system was stable for years then
>> boom,
>> desense.
>>
>>
>> All I was saying was that this station worked Perfect into a dummy load
>> (zero desense and all to spec) but did not into feedline(+15db) . So we
>> cringed and focused there.
>>
>>
>> We were getting ready to replace the antenna at 580 ft and spend some
>> money
>> after the dummy load test. Luckily the amp finished failing. What I
>> relayed
>> locally after this experience was that a complete system that works
>> flawlessly into a dummy load may not be flawless.
>>
>>
>> I do think the majority of desense problems can be diagnosed with a dummy
>> load and a sampler slug / iso tee. I just wanted to throw a recent
>> experience / monkey wrench into the thread hi.
>>
>> 73
>>
>> Don W5DK
>>
>>
>>
>>
>
>
> -- 
> Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
>
> 
>
>
>
> Yahoo! Groups Links
>
>
>






Yahoo! Groups Links

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Re: [Repeater-Builder] Spectra radio FAIL 001 errors

[Jim Cicirello]

Hi Bob,
See the Fail 001 below. Maybe someone knows how to tweek the Synthesizer if 
that is even possible.

Good Luck  JIM  KA2AJH


FAIL 001Synthesizer out-of-lock condition. Troubleshoot Synthesizer.

See: http://www.repeater-builder.com/motorola/spectra/spectra-error-codes.html
  - Original Message - 
  From: Bob M. 
  To: repeater-builder@yahoogroups.com 
  Sent: Wednesday, July 16, 2008 4:50 PM
  Subject: [Repeater-Builder] Spectra radio FAIL 001 errors


  An acquaintance has a 50w VHF Spectra. It was coming up with intermittent 
FAIL 001 messages on the screen. He had all the electrolytic caps replaced. Now 
it comes up with FAIL 001 messages whenever he changes modes. They stay there 
for 3-8 seconds, then go away, and the radio works fine. It just takes a while 
for things to settle down after changing modes, and they're all programmed 
within the legal range of the radio, from 146 to 174 MHz.

  I think it's a cap, or a bad foil feeding a cap, where the old one may have 
leaked and damaged the board. The radio is in Europe so I'm diagnosing it 
somewhat remotely.

  Anyone have suggestions?

  Bob M.



   

Re: [Repeater-Builder] New file uploaded to Repeater-Builder

[Jim Cicirello]

When I try to read the file I get the following message FilesFiles Help  

The requested file or directory is not found on the server

FYI

73 JIM  KA2AJH


  - Original Message - 
  From: Repeater-Builder@yahoogroups.com 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Wednesday, July 02, 2008 1:14 AM
  Subject: [Repeater-Builder] New file uploaded to Repeater-Builder



  Hello,

  This email message is a notification to let you know that
  a file has been uploaded to the Files area of the Repeater-Builder 
  group.

  File : /0005_5100%20Op%20Man.pdf 
  Uploaded by : efj44 <[EMAIL PROTECTED]> 
  Description : EF Johnson 5100 Owners Manual 

  You can access this file at the URL:
  
http://groups.yahoo.com/group/Repeater-Builder/files/0005_5100%2520Op%2520Man.pdf
 

  To learn more about file sharing for your group, please visit:
  http://help.yahoo.com/l/us/yahoo/groups/original/members/web/index.htmlfiles

  Regards,

  efj44 <[EMAIL PROTECTED]>




   

[Repeater-Builder] Feedline Connector Sealant Tape

[Jim Cicirello]

Hi Guys,
A cell phone Tower Tech. gave me some Cell-Tape (C-Tape) for weather
proofing connectors. I used some tonight on a connector and compared
to Coax Seal or #33 Tape and 3M Sealant this stuff was a pleasure to
use. The removal also impressed me, it was also quick and clean. I am
mentioning this product in case you don't know it exists. I would also
be interested in comments from those who have used it. I don't know
how long it has been on the market, so I am also interested in
longevity. Here is the information from the TESSCO Web Site. The
TESSCO number is 360590.

73 JIM  KA2AJH


Transmission Line Accessories
Weatherproofing [436-65] 

RFS C-Tape
An innovative alternative to traditional butyl rubber sealant tapes.
CELL-Tape (C-Tape) weather sealant and marking tape is made of clean,
self-adhesive silicone that fuses firmly to produce UV-protected air-
and water-tight bonds, all via an easy-on/easy-off mess-free
application. Multiple color options for easy tower-top cable
identification are available. CELL-Tape can elongate by three hundred
percent, stretching tight budgets as well as delivering tight protection.

* Self-adhesive silicone fuses for an air & water-tight seal.


* 1" kits contain two 15' rolls.

* 2" kits contain one 15' roll.

 

Product Details for 360590 

Re: [Repeater-Builder] Reasonably low wind load antenna

[Jim Cicirello]

Doug, Ron, Corey and all, thanks for the suggestions on materials for the 
DB-224.
Your suggestions were good and welcome. 

73 JIM  KA2AJH


  - Original Message - 
  From: n3dab 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Tuesday, June 24, 2008 3:14 PM
  Subject: Re: [Repeater-Builder] Reasonably low wind load antenna


  For anyone looking for a DB mast to mount their dipoles and harness 
  on, check out all you commercial radio shops for damaged or pulled DB 
  antennas. Don't worry about what band they are on - all you wan't is 
  the mast anyway. DB's are sleeved internally at the center joint 
  with exposed ends of the upper and lower mast sections being cut at a 
  45 degree angle. The sleeve is secured in the top mast section and 
  slides into the bottom section about a foot. the top and bottom are 
  secured together with 2 SS hose clamps. The base is also sleeved 
  internally for clamp reinforcement.

  Another source would be a metal fabricator or aluminum supplier and 
  purchase a 20' section of 1 3/4" 0r 2" heavywall aluminum tube and 
  mount your dipoles on it. Wall thickness should be 1/8" thick minimum 
  top to bottom. If you can also pick up a 24" long section of tube to 
  slip up into the bottom to reinforce the clamping area all the better.

  Doug N3DAB

  --- In Repeater-Builder@yahoogroups.com, "Jim Cicirello" <[EMAIL PROTECTED]> 
  wrote:
  >
  > Ron,
  > 
  > Thanks for the mounting information. I also lack the DB224 Mast 
  that the four dipoles mount on. From my research the original is two 
  pieces about twelve feet long that I believe bolt together, the 
  diameter I have not been able to find. From the ones I have seen the 
  mounting pole is quite robust. Do you have any pole stock that you 
  could recommend that would hold the DB224 on a side mount 
  configuration? As I recall although the mast was very rigid, it was 
  quite lightweight.
  > 
  > Thanks JIM KA2AJH
  > 
  > 
  > 
  > 
  > 
  > _ 
  > 
  > From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
  [EMAIL PROTECTED] On Behalf Of Ron Wright
  > Sent: Tuesday, June 24, 2008 12:23 PM
  > To: Repeater-Builder@yahoogroups.com
  > Subject: Re: Re: [Repeater-Builder] Reasonably low wind load antenna
  > 
  > Jim,
  > 
  > The DB224 is usually supplied with 2 clamps where each clamp 
  attaches to the DB224 mast and the other side clamps to the 
  tower/mounting pipe. I believe these are made for 2-1/2" pipe.
  > 
  > At www.tessco.com you can see pictures of these clamps and also 
  purchase them although they are not cheap. They are very rugged 
  galvanized clamps with 3/8-1/2" bolts 8" or so long and nuts.
  > 
  > I would recommend looking on e-bay or someone here that might have 
  them.
  > 
  > Another mount is side mounts. For DB224 18" off the tower is 
  typical. These have V shaped pieces one at each end of 2 pipes. The V 
  is clamped to the tower and the other end the DB224 is clamped. You 
  really need 2 mounts for this, one at the bottom and one near the 
  top. Usually the top mount is a single pipe with C/U clamps to keep 
  the antenna from swaying and the bottom holds the antenna weight.
  > 
  > The DB 224 can be top mounted without the fear of the swaying in 
  the wind damaging it unlike fiberglass antennas. I like putting top 
  and bottom mounts when one can, but if top mounted not done for 
  obvious reasons (there is no top, hi).
  > 
  > 73,ron, n9ee/r
  > 
  > >From: Jim Cicirello <[EMAIL PROTECTED] <mailto:ka2ajh%40gmail.com> com>
  > >Date: 2008/06/24 Tue AM 11:11:02 EDT
  > >To: Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com> 
  yahoogroups.com
  > >Subject: Re: [Repeater-Builder] Reasonably low wind load antenna
  > 
  > > 
  > >Hi Ron Another Question Please: I was fortunate enough to buy a 
  good DB224 without the support mast. After following the opinions on 
  wind loading, etc. I am wondering what can be used for a support mast 
  and where the masting might be purchased? Any ideas? Thanks JIM 
  KA2AJH - Original Message - From: Ron Wright To: Repeater-
  Builder@ <mailto:Repeater-Builder%40yahoogroups.com> yahoogroups.com 
  Sent: Tuesday, June 24, 2008 7:47 AM Subject: Re: [Repeater-Builder] 
  Reasonably low wind load antenna 
  > > 
  > >Tony,
  > >
  > >First the Ringo-Ranger does not have the 7 dbi gain. To think a 
  smaller 12 ft antenna would have about the same gain as one the size 
  of a 4 bay dipole is not realistic. One note of info...antenna 
  manufactures, especially from Japan, lie all the time. I would not 
  use such harsh words except after years of this junk something needs 
  to be said. I is said here on this board all the time for many know 
  

RE: Re: [Repeater-Builder] Reasonably low wind load antenna

[Jim Cicirello]

Ron,
 
Thanks for the mounting information. I also lack the DB224 Mast that the four 
dipoles mount on. From my research the original is two pieces about twelve feet 
long that I believe bolt together, the diameter I have not been able to find. 
From the ones I have seen the mounting pole is quite robust. Do you have any 
pole stock that you could recommend that would hold the DB224 on a side mount 
configuration? As I recall although the mast was very rigid, it was quite 
lightweight.
 
Thanks JIM  KA2AJH
 
 
 
 
 
  _  

From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of 
Ron Wright
Sent: Tuesday, June 24, 2008 12:23 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: Re: [Repeater-Builder] Reasonably low wind load antenna
 
Jim,

The DB224 is usually supplied with 2 clamps where each clamp attaches to the 
DB224 mast and the other side clamps to the tower/mounting pipe. I believe 
these are made for 2-1/2" pipe.

At www.tessco.com you can see pictures of these clamps and also purchase them 
although they are not cheap. They are very rugged galvanized clamps with 
3/8-1/2" bolts 8" or so long and nuts.

I would recommend looking on e-bay or someone here that might have them.

Another mount is side mounts. For DB224 18" off the tower is typical. These 
have V shaped pieces one at each end of 2 pipes. The V is clamped to the tower 
and the other end the DB224 is clamped. You really need 2 mounts for this, one 
at the bottom and one near the top. Usually the top mount is a single pipe with 
C/U clamps to keep the antenna from swaying and the bottom holds the antenna 
weight.

The DB 224 can be top mounted without the fear of the swaying in the wind 
damaging it unlike fiberglass antennas. I like putting top and bottom mounts 
when one can, but if top mounted not done for obvious reasons (there is no top, 
hi).

73,ron, n9ee/r

>From: Jim Cicirello <[EMAIL PROTECTED] <mailto:ka2ajh%40gmail.com> com>
>Date: 2008/06/24 Tue AM 11:11:02 EDT
>To: Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com> 
>yahoogroups.com
>Subject: Re: [Repeater-Builder] Reasonably low wind load antenna

> 
>Hi Ron Another Question Please: I was fortunate enough to buy a good DB224 
>without the support mast. After following the opinions on wind loading, etc. I 
>am wondering what can be used for a support mast and where the masting might 
>be purchased? Any ideas?  Thanks JIM  KA2AJH   - Original Message - 
>From: Ron Wright To: Repeater-Builder@ 
><mailto:Repeater-Builder%40yahoogroups.com> yahoogroups.com Sent: Tuesday, 
>June 24, 2008 7:47 AM Subject: Re: [Repeater-Builder] Reasonably low wind load 
>antenna 
> 
>Tony,
>
>First the Ringo-Ranger does not have the 7 dbi gain. To think a smaller 12 ft 
>antenna would have about the same gain as one the size of a 4 bay dipole is 
>not realistic. One note of info...antenna manufactures, especially from Japan, 
>lie all the time. I would not use such harsh words except after years of this 
>junk something needs to be said. I is said here on this board all the time for 
>many know antenna performance here, hi.
>
>Your wind loading limits will require a smaller, lower gain antenna. If ice is 
>a problem the Ringo-Ranger will probably not last that long.
>
>I would recommend going to www.tessco.com, a distributor of 2-way gear, and 
>check thru their antenna section. They have a number of finnne manufactures 
>with their specs.
>
>73, ron, n9ee/r
>
>>From: Tony VE6MVP <[EMAIL PROTECTED] <mailto:tony%40ve6mvp.com> com>
>>Date: 2008/06/23 Mon PM 10:28:11 EDT
>>To: Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com> 
>>yahoogroups.com
>>Subject: [Repeater-Builder] Reasonably low wind load antenna
>
>> 
>>Folks
>>
>>We're moving a VHF amateur repeater to a 96' Trylon self supportingtower.  
>>The overwhelming opinion is that our current 210C4 four bayfolded dipole 
>>would be too much of a weight and wind load for thattower.
>>
>>One comment has been the Ringo Ranger.   The wind load of theCushcraft Ringo 
>>Ranger II 
>>ARX2Bhttp://cushcraft.com/comm/support/pdf/RINGOS%20AR2%206%2010%20ARX450%20220B%202B.pdfis
>> 0.5 square feet.   The windload of the Sinclar SD214 http://www.sinclair 
>><http://www.sinclairtechnologies.com/catalog/resources/pdf/SD214-HF2P3LDF> 
>>technologies.com/catalog/resources/pdf/SD214-HF2P3LDF(D00S-LSABK)-DI.pdf 
>>(newer model to 210C4) is 5.57 square feet.  Although the ice area is 17.04 
>>sq ft.  The SD214 has a dbd gain of 7.2, dbi of 9.3.   The Ringo Ranger has 
>>dbi gain of 7.0.  However the coverage plot in rural slightly hilly Alberta 
>>isn't all that much different.
>>
>

Re: [Repeater-Builder] Reasonably low wind load antenna

[Jim Cicirello]

Hi Ron

Another Question Please: I was fortunate enough to buy a good DB224 without the 
support mast. After following the opinions on wind loading, etc. I am wondering 
what can be used for a support mast and where the masting might be purchased? 
Any ideas? 

Thanks JIM  KA2AJH


  - Original Message - 
  From: Ron Wright 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Tuesday, June 24, 2008 7:47 AM
  Subject: Re: [Repeater-Builder] Reasonably low wind load antenna


  Tony,

  First the Ringo-Ranger does not have the 7 dbi gain. To think a smaller 12 ft 
antenna would have about the same gain as one the size of a 4 bay dipole is not 
realistic. One note of info...antenna manufactures, especially from Japan, lie 
all the time. I would not use such harsh words except after years of this junk 
something needs to be said. I is said here on this board all the time for many 
know antenna performance here, hi.

  Your wind loading limits will require a smaller, lower gain antenna. If ice 
is a problem the Ringo-Ranger will probably not last that long.

  I would recommend going to www.tessco.com, a distributor of 2-way gear, and 
check thru their antenna section. They have a number of finnne manufactures 
with their specs.

  73, ron, n9ee/r

  >From: Tony VE6MVP <[EMAIL PROTECTED]>
  >Date: 2008/06/23 Mon PM 10:28:11 EDT
  >To: Repeater-Builder@yahoogroups.com
  >Subject: [Repeater-Builder] Reasonably low wind load antenna

  > 
  >Folks
  >
  >We're moving a VHF amateur repeater to a 96' Trylon self supportingtower.  
The overwhelming opinion is that our current 210C4 four bayfolded dipole would 
be too much of a weight and wind load for thattower.
  >
  >One comment has been the Ringo Ranger.   The wind load of theCushcraft Ringo 
Ranger II 
ARX2Bhttp://cushcraft.com/comm/support/pdf/RINGOS%20AR2%206%2010%20ARX450%20220B%202B.pdfis
 0.5 square feet.   The windload of the Sinclar SD214 
http://www.sinclairtechnologies.com/catalog/resources/pdf/SD214-HF2P3LDF(D00S-LSABK)-DI.pdf
 (newer model to 210C4) is 5.57 square feet.  Although the ice area is 17.04 sq 
ft.  The SD214 has a dbd gain of 7.2, dbi of 9.3.   The Ringo Ranger has dbi 
gain of 7.0.  However the coverage plot in rural slightly hilly Alberta isn't 
all that much different.
  >
  >What would be suggestions for an alternative?  Comments?
  >
  >Thanks, Tony 
  >(rapidly learning lots about towers and repeaters) 

  Ron Wright, N9EE
  727-376-6575
  MICRO COMPUTER CONCEPTS
  Owner 146.64 repeater Tampa Bay, FL
  No tone, all are welcome.



   

Re: [Repeater-Builder] Re: antenna suggestions for 440mhz

[Jim Cicirello]

Hi Guys, 

My question is have you ever put up a downtilt antenna to replace an antenna of 
the same configuration, i.e. gain, etc. and have been able to say with 100% 
certainly that the downtilt worked? My 911 center went to high band for fire. 
Within a few days Industry Canada was on the phone saying that our cross band 
repeater from low band to high band was severely causing interference to a fire 
department in Canada. While I was on the phone, I would hear our units coming 
in loud and clear at the Industry Canada Office. Make a long story short, I had 
many conference calls between the FCC and Industry Canada and I agreed to 
Canada's request to mount a down tilt antenna at the same location of the 
existing antenna. A week later the antenna was installed and there was NO 
difference in signal quality from the Alma Hill New York Tower 2,558' to the 
location in Canada some 125 miles away. I cut the amp out and used the six watt 
exciter and I could still hear the signal over the phone from Canada just fine. 
We finally negotiated a frequency change and I walked away knowing that 
downtilt in this application didn't work. I might add that this was not 
inversion or ducking, the signal was there 24 X7 day after day. 



73 JIM  KA2AJH  Wellsville, NY 

  - Original Message - 
  From: [EMAIL PROTECTED] 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Saturday, June 07, 2008 12:35 PM
  Subject: RE: [Repeater-Builder] Re: antenna suggestions for 440mhz


  At 6/7/2008 08:22, you wrote:

  >In fear of moving off topic... I'd like to ask how one can determine the
  >electrical downtilt of an antenna?
  >
  >I just put into service a RSF/Celwave Super StationmasterR Model 10017-6
  >that is designed for 925-960 MHz on my 927.5250 repeater. The added gain
  >factor of the antenna (an additional 4dBd over what was previously in place
  >- a Decibel DB586-Y) does not seem to benefit the receive (at 902 MHz). I
  >gained what seems like a little extra receive range, but not equal to what I
  >seem to have gained in transmit coverage.

  Downtilt shouldn't vary too much between TX & RX freqs. What's probably 
  happening is that the increased gain is resulting in increased noise pickup 
  from the horizon as well as signal. Changes in gain directly affect your 
  transmit ERP, but they don't necessarily translate directly into increased 
  RX range depending on where the noise is.

  Slightly related: I once maintained a repeater at a residential mountain 
  site with lots of elevation but no clear view to the ground (trees in the 
  way). The site RF characteristics on 2 meters were somewhat like an RF 
  "black hole": RF could get in but was hard to get out. We needed ~200 
  watts of TX power on the repeater to balance TX & RX with a 50 watt mobile 
  user. I believe the reason was foliage absorption combined with a high 
  noise floor down below. Around here antenna noise temperatures on 2 meters 
  are typically ~3000 K. However this site had much lower noise - it's the 
  only site around here where adding a preamp to a G.E. receiver resulted in 
  actual system sensitivity improvement. So with biological attenuation 
  surrounding the site, both signal & noise approaching the site were 
  attenuated. With the low noise RX, the net reduction in S/N due to the 
  attenuation was minimal. However, the attenuation directly reduced the TX 
  signal leaving the site. So the net effect was the site "heard" OK but 
  TXing out was difficult.

  Bob NO6B



   

Re: [Repeater-Builder] Re: Simulating a weather alert

[Jim Cicirello]

Hi Randy,
Do you know who makes the SAME Test Unit and the approximate cost? This is the 
first I have heard of a commercial made unit for testing.

Thanks JIM  KA2AJH
  - Original Message - 
  From: wb0vhb 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Sunday, June 01, 2008 10:03 AM
  Subject: [Repeater-Builder] Re: Simulating a weather alert


  I have a unit that has four push buttons. Each button is PC
  programmable to transmit any kind of event on any of the WX channels
  you program it to. It can be programmed for any SAME code.

  In place of the normal voice announcement, a 1K tone is played for
  about 10 seconds before the deactive code is sent to close the wx
  receiver speaker.

  We have installed a large number of wx receivers in businesses and
  factories connected to existing public address systems. This test
  unit is essential to test the receivers since some people don't want
  the weekly test going off.

  Randy

  --- In Repeater-Builder@yahoogroups.com, "Robert Pease" <[EMAIL PROTECTED]> 
wrote:
  >
  > Is there an easy way to simulate a weather alert for testing. I was
  thinking of recording one and playing it through my service monitor
  but there must be one recorded somewhere
  > 
  > Any ideas
  > 
  > Rob. KS4EC



   

[Repeater-Builder] Lost Information?

[Jim Cicirello]

On this site I was looking for "Using open stubs to notch 
interference"   By Nico PAØNHC When I attempt to open it appears it is 
no longer available. Does anyone know if this information on Open Stubs 
is posted anywhere else. Thanks JIM  KA2AJH

Re: [Repeater-Builder] Cooling fan

[Jim Cicirello]

I have been able to eliminate the noise by using a power supply that does not 
support the repeater. I have even used the cheap wall wart types to power the 
fans with no noise generated to the repeater.

JIM  KA2AJH  
  - Original Message - 
  From: Captainlance 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Saturday, April 26, 2008 9:12 AM
  Subject: Re: [Repeater-Builder] Cooling fan



  We have found that 12v. fans do cause interference with our link transmitters 
for the NYC voting network. The solution we found is taking one of the 2 power 
supply chokes from an old Micor mobile radio and using it in series with the 
12v. lead to the fan, add a cap. 2000 mfd or larger from fan to ground and the 
level of AC imposed on the power lead drops from nearly 4 VOLTS to less than 10 
millivolts...Resulting in a totally clean carrier. 
  lance N2HBA
- Original Message - 
From: Doug Hutchison 
To: Repeater-Builder@yahoogroups.com 
Sent: Saturday, April 26, 2008 4:48 AM
Subject: [Repeater-Builder] Cooling fan


Hi,

Have tried a few ex equipment and CPU cooler fans on a p/a heatsink
but all generate a noise (light buzz) on the transmitted signal.

Can anyone suggest the correct choice of fan (or what I am missing) to
stop the buzz on the transmitted signal?

RF choke? Tried cap up to 4700uf little change?

Thank you,
Doug - GM7SVK








No virus found in this incoming message.
Checked by AVG. 
Version: 7.5.524 / Virus Database: 269.23.4/1397 - Release Date: 4/25/2008 
7:42 AM


   

Re: [Repeater-Builder] OT Dayton Hamvention Group OT

[Jim Cicirello]

Thanks for the information Paul. There is already road construction detour 
information that is nice to know ahead of time. 
http://f1.grp.yahoofs.com/v1/UF0KSDzYb3pXUEbrsxb4IErn8FAENig2A94Yn77rnijnIWiSgB6KRcqN8PQdSVFEsYI9k3tsZokjLdHbsd962UPVjA7T/HVTrafficinfo.doc

73 JIM  KA2AJH


  - Original Message - 
  From: Paul Finch 
  To: Repeater-Builder@yahoogroups.com ; [EMAIL PROTECTED] ; [EMAIL PROTECTED] 
; [EMAIL PROTECTED] 
  Sent: Saturday, April 19, 2008 12:47 PM
  Subject: [Repeater-Builder] OT Dayton Hamvention Group OT


  Hello,

  If interested there is now a Dayton Hamvention group on Yahoo. Sounds like
  the Dayton people put it up to help, not many people on it yet. Just
  thought I would mention it.

  Paul


  No virus found in this outgoing message.
  Checked by AVG. 
  Version: 7.5.524 / Virus Database: 269.23.2/1386 - Release Date: 4/18/2008
  5:24 PM



   

Re: [Repeater-Builder] Mot Micor T74RT3000AA

[Jim Cicirello]

Hi Bruce,
I believe you and I are representative of a large group who have spent our 
lives in other vocations, now find ourselves older with health problems and Ham 
Radio, in my case Repeaters keep some sanity in our lives. Kevin, Mike and 
Skipp to mention just a few have been great help over the years. Mike called me 
from California one night and worked me thru a problem, don't get any better 
than that. As you said the Repeater Builder Site is a wealth of information and 
I hope all remember to send generous donations to Kevin so he can keep this 
site going and grow the data base. I personally would be lost without the help 
which you cant get from a book!!

73 JIM  KA2AJH  Wellsville, NY 
  - Original Message - 
  From: Bruce Bagwell 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Saturday, April 05, 2008 6:46 AM
  Subject: [Repeater-Builder] Mot Micor T74RT3000AA



  Hello All and thanks to all who replied.

  A bit of my history. I am a self-taught with mail-order electronics courses 
and the time-to-time help of fine people like you guys.
  A machinist by trade until major surgery that left me disabled with Chronic 
Pancreatitis.
  Most of my electronics work is with AF amplifiers, light control systems 
(night clubs, etc.) and some TV work. Computers since my first TI99-4A in the 
early '80's.  Computers, I only go to board level. Parts are too cheap to even 
bother trying to figure exactly what is wrong, just plug in a new board. 
Besides, I don't have the eyesight or super steady hands for the newer SMT 
stuff! Besides,I don't do electronics on a daily basis. Seems like only when 
something quits and needs to get fixed.

  When it comes to Radio, while I know the theory from my studies (And I need 
to go back and brush up for sure!) the actual practice is another story. That 
is why I have thrown a few questions your way.

  When I was asked to go through, catalog and dispose of this Gentleman's Radio 
shack, I decided to get my HAM ticket. There would never be a better time for 
sure!  This Gentleman worked for Business and Govt., working mainly on Johnson 
and Motorola, and never threw anything away!

  This Micor probably got in the back shed because it had problems and the 
company just bought another, etc. I simply thought it might be a good way for 
me to learn by doing.  I asked you guys about it because like I said, I know 
the theory but you guys know the practice better than I ever will! I fully 
agree, and it has been said many times in this group, to ALWAYS get something 
working like it was BEFORE making any changes. At least that way, you know 
everything was working until you started changing stuff, etc! I have yet to 
find A Micor control head but looked at schematic. If schematic is complete 
doesn't look like much to build one.  Also, have A (from memory and hope this 
is right) Motorola "Talk-A Phone" head like I remember seeing in every Cop Car 
and TaxiCab in the ;late '60's and '70's. Maybe that could be adapted. One 
question, according to the Model #, this Micor was 2ch. TX and 2ch. RX. Does 
that mean there should (could) be another element?

  As for the newer stuff, will soon be buying a Kenwood TM-V71A Dual Band 
Mobile rig. Again, only thinking about this for practice and learning.

  I have all the test equipment except for a spectrum analyzer (DMM, O-Scope, 
Comm. Monitor, Freq. Counter, Dummy loads, etc.) Remember, I am going though 
the estate of someone who did this for a living, plus the test equip. I already 
have.

  All that being said, I will have many things for sale soon, but on this 
topic, I have found several Motorola elements and
  Johnson X-Tals.
  The Mot's are:
  Qty 4 of P/N K1005A (2)-R155.605Mhz 15767.222Khz
   (1)-R155.790Mhz 16.01000Khz
   (1)-R154.950Mhz 15.91Khz
  Qty 1 of P/N K1007A T-158.235Mhz 13186.250Khz
  No idea if these are good or not, no way to test. Will use gentleman's 
agreement. send to you then you send back $$$ if seems OK to you. You tell me 
what they are worth.

  As for the Johnson X-Tals, they are in original envelope, most with Comp. 
Cap.  Too many to list here. If you need one, send either P/N and/or Freq. And 
I will see If I have it.

  Also have Com Monitor IFR FM/AM 1200A. Sorry, not the "S" Model with Spectrum 
Analyzer.
  I also have a 100ft.+ AGL guyed tower QTH Wichita Falls, TX. However, this 
owner simply wants someone to take it away for free. Come get it and it is 
yours.

  Sorry for the long letter but it might help you guts better understand me.  
The RF stuff, in practice, is new to me and I well know electricity can do some 
really weird things at high freq's! and I don't, as yet, understand all of it. 
Will stick my nose back in the books for sure!


  Thanks again for all the help!
  The "Repeater Builder" Site is A wealth of info for sure!!

  Bruce Bagwell
  KE5TPN




  I wrote:
  >I already know this is UHF mobile unit. I have the 

RE: [Repeater-Builder] The emails we get at repeater-builder....

[Jim Cicirello]

Scott,

 

I for one will be reluctant to ask on line again in fear of falling into the
baseball card category licensee. My expertise is in the law and I understand
that everyone don't know how to find the massive information and I agree
some are lazy, me included sometimes. I didn't know this was a problem, so I
for one will be very cautious in the future. I must say I am a little
disappointed with the remarks.

 

 

73 JIM   KA2AJH  Wellsville NY

 

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Dave
Sent: Friday, February 29, 2008 12:29 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] The emails we get at repeater-builder

 

With all of the excellent info and resources, this is without a doubt the
very best available. You are correct. It points up the "let the other guy do
it syndrome" I always thought one had to have a bit of technical knowledge
to get a license. I'm beginning to wonder if they come with baseball cards.
Google alone will produce enough tech info to help educate most anyone. I
only wish this resource had been there when I was growing up. In those times
one had to read a book and seek mentoring on questions. 


Scott Zimmerman wrote: 

I agree with Mike. As owner of Repeater-Builder, (the company) I get more 
than my fair share of these types of e-mail myself. Sometimes it makes for a

good chuckle, but more often it just makes me sad to think of all the 
information we provide; and yet some people are too lazy to read and digest 
it on their own.
 
Oh Well..
 
Scott
 
Scott Zimmerman
Amateur Radio Call N3XCC
474 Barnett Rd
Boswell, PA 15531
 
- Original Message - 
From: "Mike Morris WA6ILQ"   <[EMAIL PROTECTED]>
To:  

Sent: Thursday, February 28, 2008 9:13 PM
Subject: [Repeater-Builder] The emails we get at repeater-builder
 
 
  

The authors and webmasters at repeater-builder
get some STRANGE emails...
 
It seems that way too many people skim an article
and then immediately email the author asking him
to do all the work, even when all the info is in the
article.
 
Then there are those that don't even read the articles.
 
Other times we just get weird emails  like this one:
 


The repeater at work has a problem hearing the
walkie talkies (it's at a shopping mall). The antenna
cable was damaged and the guys at Radio Shack
gave us some new stuff so I know it's good. The unit
says Motorola M100 and GM300 on the front.
Will a preamp help?   Is this one any good?
 
  

 


 
Sigh.  I answered back and told them to get with a
good local 2-way shop, that it was impossible to diagnose
from across the country.
 
(click on the link and look at it - it's obviously intended for
a scanner.  The $2 suggests that there probably isn't
much there...)
 
Mike WA6ILQ
 
 
 
 
 
 
Yahoo! Groups Links
 
 
 
 
 
-- 
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.5.516 / Virus Database: 269.21.1/1303 - Release Date: 2/28/2008 
12:14 PM
 


 
 
 
 
 
 
Yahoo! Groups Links
 
 
(Yahoo! ID required)
 
mailto:Repeater- 
[EMAIL PROTECTED]
 
 
 
 
  

 

 

RE: [Repeater-Builder] Dayton?

[Jim Cicirello]

Hi Jeff,

No package here, so I went on line and found that we had to send for our
spaces by February 15th for them to guarantee us the spaces we had last
year. I went on line and sent them my vendor ticket request and 2008 Dayton
Hamvention Flea Market Agreement I downloaded and signed, along with my
Credit Card Number. 

 

73 JIM   

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Jeff DePolo
Sent: Tuesday, February 19, 2008 1:18 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Dayton?

 


Maybe a little off topic, but since we always seem to meet up with a bunch
of other repeater-builder denizens every year at Dayton, maybe not...

Has everyone else received their annual package from the Dayton Hamvention
folks this year for flea market spaces? Seems to me that I usually received
that whole package in December of January in years' past, but nothing so far
this year. 

--- Jeff WN3A

 

RE: [Repeater-Builder] Wide Band / Narrow Band

[Jim Cicirello]

Hi Chuck,

 

What are you hearing from the Sheriff Joe as your county is a BATA Site for
M/A-Com OpenSky. I am hearing horror stories. Some time if you have a minute
maybe you can bring me up to speed on your opinion as to if this system will
ever be accepted. I know Motorola is waiting in the shadows to put in
something they know will work. Shoot me a comment off line someday.

[EMAIL PROTECTED]

73 Jim  KA2AJH  

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Chuck Kelsey
Sent: Sunday, February 17, 2008 1:29 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Wide Band / Narrow Band

 

This will all change dramatically as systems migrate to the M/A-Com OpenSky
system in New York State. The only way you'll be able to listen is if an
agency gateways traffic to a conventional channel. This same thing is
already happening in Pennsylvania. But this is somewhat off-topic, I
suppose.

 

Chuck

WB2EDV

 

 

 

- Original Message - 

From: Jim Cicirello <mailto:[EMAIL PROTECTED]>  

To: Repeater-Builder@ <mailto:Repeater-Builder@yahoogroups.com>
yahoogroups.com 

Sent: Sunday, February 17, 2008 1:22 PM

Subject: RE: [Repeater-Builder] Wide Band / Narrow Band

 

We are going through the same growing pains here in Rural Western New York.
The problems with the NON-TRUNKING SCANNERS, is they will not go out to 12.5
KHz or even lower of a split. Here is an example; one of our frequencies,
155.0475. Now if you try to put that in your BC-895XLT it will round off.
Another problem is that on the narrow band frequencies, they use a deviation
of about 3 KHz. The scanners, even the new TRUNKING SCANNERS that will go
out to the new narrow band frequencies will NOT consistently decode the
lower generated PL Tones below about 4 KHz. I called Uniden and told them
that I wanted a list of scanners that would do the new narrow band
frequencies BUT DID NOT NEED TRUNKING. He told me that the only scanners
they have capable of narrow band are the TRUNKING UNITS. Now if you are
close to the transmitter, you can sometimes hear the rounded off frequency
OK without distortion. And if the PL don't decode, use carrier squelch.
Hopes this helps. Join the crowd of the new Narrow Band Generation. 

 

 

RE: [Repeater-Builder] Wide Band / Narrow Band

[Jim Cicirello]

We are going through the same growing pains here in Rural Western New York.
The problems with the NON-TRUNKING SCANNERS, is they will not go out to 12.5
KHz or even lower of a split. Here is an example; one of our frequencies,
155.0475. Now if you try to put that in your BC-895XLT it will round off.
Another problem is that on the narrow band frequencies, they use a deviation
of about 3 KHz. The scanners, even the new TRUNKING SCANNERS that will go
out to the new narrow band frequencies will NOT consistently decode the
lower generated PL Tones below about 4 KHz. I called Uniden and told them
that I wanted a list of scanners that would do the new narrow band
frequencies BUT DID NOT NEED TRUNKING. He told me that the only scanners
they have capable of narrow band are the TRUNKING UNITS. Now if you are
close to the transmitter, you can sometimes hear the rounded off frequency
OK without distortion. And if the PL don't decode, use carrier squelch.
Hopes this helps. Join the crowd of the new Narrow Band Generation. 

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
Sent: Sunday, February 17, 2008 12:09 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Wide Band / Narrow Band

 

Our local fire, police and ambulance departments are going to Narrow Band 
per the FCC. I was told by one fire department that their pagers will only 
work one narrow band. Now this guy must be talking about the tones for the 
pagers? But to me wide or narrow the tones are the same. Right? Going 
narrow just means that they are taking up less of the band width for their 
frequency? He also said that scanners will not be able to listen to them 
unless the scanner is set up for narrow band. His wife gave me her nice 
Uniden BC-895XLT scanner because her husband told her the same thing. 
Some one who is in the know would like to fill us in on the topic. All EMS 
departments will be narrow band by April, in our area; from what he said.

Rod

 

RE: [Repeater-Builder] SO239 Barrel Nut Size

[Jim Cicirello]

Thank you Eric and all who replied.  I now have a size and thread to search
for.

 

73 JimKA2AJH

 

 

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Eric Lemmon
Sent: Saturday, February 09, 2008 3:38 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] SO239 Barrel Nut Size

 

Jim,

Both the UHF and the N connector have 5/8-24 threads.

73, Eric Lemmon WB6FLY


-Original Message-
From: Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
yahoogroups.com
[mailto:Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
yahoogroups.com] On Behalf Of Jim Cicirello
Sent: Saturday, February 09, 2008 12:23 PM
To: Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
yahoogroups.com
Subject: [Repeater-Builder] SO239 Barrel Nut Size

Hi
Can someone tell me the nut size and thread to go on a SO239 or N Type
Barrel, Bulkhead, etc connector?

Thanks in advanceJIM KA2AJH

 

[Repeater-Builder] SO239 Barrel Nut Size

[Jim Cicirello]

Hi
Can someone tell me the nut size and thread to go on a SO239 or N Type
Barrel, Bulkhead, etc connector?

Thanks in advanceJIM  KA2AJH

RE: [Repeater-Builder] Re: Micor Repeater - ID?

[Jim Cicirello]

I have two Kenwood Community Repeaters, one on UHF and the other on VHF. The
thing that makes them a community repeater is they have a multi user CTCSS
or Digital Tone Panel and each user/customer is assigned a tone. The newer
mobile units and portables are set up for BUSY CHANNEL LOCK OUT which means
that if a user goes to use the repeater when another user is on the air, the
mobile unit or the user waiting will get a tone/flashing light to indicate
that the channel is busy and it prevents someone from cutting in on an
on-going conversation. So it is like any other repeater except it has the
multi user tone panel.

Good Luck..Jim  KA2AJH  

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Mike Benonis
Sent: Monday, February 04, 2008 8:23 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: Micor Repeater - ID?

 

What exactly is a community repeater? I've seen references to it, but 
I haven't seen a definition yet.

Best regards,

Mike Benonis
Electrical Engineering '09
Department of Drama Sound Engineer
The University of Virginia
[EMAIL PROTECTED] 
KI4RIX

On Feb 4, 2008, at 3:55 , sgreact47 wrote:

> Acually it IS a C64RCB-3105AY which is a eight user comunity
> repeater.
>
>
> "Eric Lemmon" <[EMAIL PROTECTED]> wrote:
>>
>> Mike,
>>
>> The C64RCB-3105AT (I'm pretty sure the "Y" is actually a "T")
> station is
>> described as:
>>
>> C = Compa Station
>> 64 = 75 watt output in the UHF band
>> RCB = Continuous Duty PA
>> 3 = PL Tone-Coded Squelch
>> 1 = N/A
>> 0 = 1 TX and 1 RX
>> 5 = DC Remote Control
>> AT = Repeater Station
>>
>> You can get more information by looking at the numbers stamped on
> the
>> various boards.
>>
>> 73, Eric Lemmon WB6FLY
>>
>>
>> -Original Message-
>> From: Repeater-Builder@ 
yahoogroups.com
>> [mailto:Repeater-Builder@ 
yahoogroups.com] On Behalf Of Mike Benonis
>> Sent: Saturday, February 02, 2008 1:38 PM
>> To: Repeater-Builder@ 
yahoogroups.com
>> Subject: [Repeater-Builder] Micor Repeater - ID?
>>
>> Good day,
>> I just picked up what I believe is a Micor repeater at a Hamfest
>> today for free. I'm told the repeater works, but I can't verify
>> that. Here's what I know about it:
>>
>> Form Factor: Rack-Mounted
>> Model Number: C64RCB-3105AY
>> FCC Xmit Info: CC4224C
>> FCC Rcvr Info: RC0080
>> Frequency: 464.050 MHz (I assume this is TX, but it doesn't say
>> specifically on the label)
>>
>> Cards installed:
>> 2x Four User Control Modules
>> 1x Master Decoder
>> 1x Squelch Gate
>> 1x Station COntrol Module
>> 1x Time Out Timer
>>
>> It has a Motorola power supply in the rack at the bottom. I didn't
>> see any cans mounted in the rack, but I only found one N connector
> on
>> the back (ublabeled, of course, but it looks like it comes out of a
>> large silver box at the top of the rack with a heatsink on it. I
> can
>> provide photos of the unit if needed.
>>
>> I'd like to convert this down to the 440 MHz amateur band if
> possible,
>> for less than say, $1000 in new parts/repairs. Can anyone tell me,
>> based on the information given, if this seems like a reasonable
> thing
>> to do? If this is a boat anchor, I'm perfectly happy to get rid of
> it
>> - but I figured, for free, what do I lose?
>>
>> Best regards,
>>
>> Mike Benonis
>> Electrical Engineering '09
>> Department of Drama Sound Engineer
>> The University of Virginia
>> [EMAIL PROTECTED] 
>> KI4RIX
>>
>
>

 

RE: [Repeater-Builder] NHRC-4 CONTROLLER AND TS-32 TONE BOARD

[Jim Cicirello]

Hi Kevin, As always thanks for your help. Can I tell you what I am doing and
what is happening so you can yell me why?

 

First the only problem I am having is after the CTCSS becomes active then
drops, the tail of the NHRC will broadcast NON PL signals or interference
for the duration of the tail. I need to mute the non PL audio coming into
the controller after the CTCSS DECODE STOPS. 

 

I am using the Repeater Builder Circuit you suggested and the CTCSS Decode
goes thru the transistor/relay switch hooked to the receiver COS. Now if
there is noise on the RX the switch stays active as it is responding to CAS
not tone. I would like to have a way for the switch to respond to tone,
rather than CAS. 

 

Because I don't always describe things, let me give you an example:

 

I put the service monitor on the repeater and generate a noisy CSQ signal.
The receiver responds, but the controller waits for PL. Then I turn on the
PL and the NHRC-4 repeats and I hear the noise from the generator coming
through the HT set for tone squelch. Now I shut off the tone on the
generator and the HT goes quiet. If you listen to the output of the repeater
using carrier squelch you can hear the noise from the service monitor for
the duration of the tail. The tail closes, the controller stops and all is
quiet until another PL brings up the controller. 

 

I need to mute the controller without affecting the RX audio or the output
that sends the Tones and CW ID.

 

Thanks in advance Kevin.

 

73 JIM KA2AJH Wellsville, NY 

 

 

 

 

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Kevin Custer
Sent: Saturday, January 12, 2008 10:31 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] NHRC-4 CONTROLLER AND TS-32 TONE BOARD

 

Kevin Custer wrote:
> Follow the link to the right mod:
> http://www.repeater

-builder.com/nhrc/pix/nhrc-4-ctcss-switch.gif
>
> HOWEVER... (Since the TS-32 doesn't have a encode tone enable) Use the 
> relay contacts to make and break the CTCSS Tone to the transmitter.
> (Keep the encoder/decoder powered at all times) 

AND... Do not install R3, D2 or tie the relay contacts to ground
(unless you have another set of contacts to do it separately)

Kevin

 

RE: [Repeater-Builder] NHRC-4 CONTROLLER AND TS-32 TONE BOARD

[Jim Cicirello]

Hi Chuck,

Here I have explained to Lowell the problem I am having using a relay to
break the encode output line: Any ideas

 

Hi Lowell,

Thanks for the information. I have a similar design I think where I use the
COS to turn on a transistor that operates a relay that the encoder goes
through. My problem is that after a CTCSS Signal activates the NHRC-4, any
interference or signals on the frequency can come thru the tail. Now those
signals are not transmitting CTCSS but the repeater is repeating them with
carrier squelch as long as the tail is up. Once the tail drops, it stops
until a CTCSS Signal opens the controller and again the tail will transmit
the signal. Have you experienced this? It appears that I need to take the
COS signal from the DECODER so when the DECODER drops, the controller will
MUTE the tail. Possibly I have problem with the controller not muting.  Any
ideas?

 

Here is an example: I put the service monitor on the MASTR II and transmit a
carrier without CTCSS. Nothing happens. I apply the 107.2 tone and the
controller comes active and re-transmits the signal OK. I stop the CTCSS
tone from the generator and let the carrier transmit and the repeater tail
will transmit the noise from the generator for the duration of the tail.  

 

Thanks JIM   

 

 

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Chuck Kelsey
Sent: Friday, January 11, 2008 9:57 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] NHRC-4 CONTROLLER AND TS-32 TONE BOARD

 

If you are going to use a relay, simply use a set of the relay contacts to 
break the encode output line.

Chuck
WB2EDV

- Original Message - 
From: "Jim Cicirello" <[EMAIL PROTECTED] <mailto:ka2ajh%40gmail.com> com>
To: mailto:Repeater-Builder%40yahoogroups.com>
yahoogroups.com>
Sent: Friday, January 11, 2008 9:25 PM
Subject: [Repeater-Builder] NHRC-4 CONTROLLER AND TS-32 TONE BOARD

> Hi Guys,
> Another project and another question for you please.
> I am installing a TS-32 on my UHF repeater. I followed the
> instructions and the decode works OK. Now I want the Encode Output to
> be active only when CAS is activated, so there is no ctcss present
> when the tail is on.
> I can't seem to find any logic points on the TS-32 where I can hook a
> simple transistor and relay to cut the encode when the decode drops.
> Any suggestions on how to accomplish this?
>
> 73 JIM KA2AJH
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
> 

 

[Repeater-Builder] NHRC-4 CONTROLLER AND TS-32 TONE BOARD

[Jim Cicirello]

Hi Guys,
Another project and another question for you please. 
I am installing a TS-32 on my UHF repeater. I followed the
instructions and the decode works OK. Now I want the  Encode Output to
be active only when CAS is activated, so there is no ctcss present
when the tail is on.
I can't seem to find any logic points on the TS-32 where I can hook a
simple transistor and relay to cut the encode when the decode drops.
Any suggestions on how to accomplish this?

73 JIM  KA2AJH   

[Repeater-Builder] Season's Greetings From KA2AJH/R

[Jim Cicirello]

Merry Christmas and Happy New Year from my home to yours. 
May 2008 be filled with Peace, Good Health and Happiness. 
Thanks to you all who have shared your knowledge so those of us who
are less experienced can build and enjoy the hobby. 

73 Jim  KA2AJH  Wellsville, N.Y. 

RE: [Repeater-Builder] PSE-508-2 Repeater Controller for Mastr II Station

[Jim Cicirello]

I had one of the first controllers that Al Pion made. It plugged it into the
MASTR II Base and took off running. After using it for prolonged period
(long winded conversations) it would stop sending the CW ID. I called and
talked to Al who took all my programming parameters, plugged them into his
test device which constantly keyed the controller and had the problem
solved. He is one of the very few venders who took the time to call me on
the phone and explained what he did to correct the minor problem and assured
me he would be around if anything occurred in the future.  Anyway, I am not
only satisfied with the plug and play controller that sounds as good as any
controller I have heard, but I am also impressed with the personal customer
service. The one I had only had PL Decode and I had to put a TS32 on the TX.
Well Al fixed that too with encode and decode on the next version. The
controller is now on a Mastr II at our hospital to coordinate our ambulance
members responding to calls. Hope this helps.

Jim  KA2AJH

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Mike Pugh
Sent: Tuesday, November 20, 2007 10:24 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] PSE-508-2 Repeater Controller for Mastr II
Station

 



skipp025 wrote:
> Re: PSE-508-2 Repeater Controller for Mastr II Station 
> 
> I'm seeing these controllers on Ebay. 
> 
> PSE-508-2 Repeater Controller for Mastr II Station 
> Ebay Item number: 260145863366 
> 
> Anyone every used one..? Have any history or opinions about 
> it/them? 
> 
> thanks in advance for your replies. 

We've got one here in a MastrII. I bought it new, made the simple mod to 
route TX PL to the transmitter. It has worked flawlessly since March 
this year. Since that time, I have sold the repeater to a friend. It 
still resides in my cabinet and he has had no trouble with it. A quick, 
easy solution that is easily reversible should it ever be needed to go 
another direction. Two thumbs up! Mike KA4MKG

 

RE: [Repeater-Builder] Micor Audio on VERY WEAK SIGNALS

[Jim Cicirello]

Thanks for the research Kevin. This Cat 200 is a good one to start with. I
did not do the original install, so I will check the values. Mr. Lightning
as not been good to this site, so this is the 3rd repeater the controller
has been on. The other two were Micor Mobiles. Hope to get the associated
link up before winter and I will make these modifications and post the
results.

 

73 JIM  KA2AJH

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Kevin Custer
Sent: Sunday, November 04, 2007 8:45 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Micor Audio on VERY WEAK SIGNALS

 

I downloaded the manual on the CAT-200 and looked

The CAT-200B has the ability to do de-emphasis, but, it's not as simple as
flipping a dip switch; you must install a capacitor for adding de-emphasis
per port.
C10 is for RX#1 and C11 is for RX#2.  These parts are listed as "optional"
on the schematic, and like many things from CAT, they don't tell you the
damn value...

I also looked at the audio chain...   I see they have taken my advice for
the output coupling capacitor value, but the input cap is too small.  It's a
.1, and it feeds a 10K pot, and the wiper feeds a 10K input resistor.
Depending on the setting of the input control, this could result in a .1
feeding 5K shunt resistance.  Doing the math, this equates to a low end roll
that could be as high as 318 Hz.  In my opinion, a .1 uF cap is TOO SMALL.
I'd change it to a .47 uF bringing the corner to 67 Hz.

My recommendations:  
Change C8 and C9 to something larger than .1uFI recommend nothing
smaller than a .47 uF Non-Polarized capacitor.
Install C10 or C11 with (depending on which port of the controller you are
using and what audio is being delivered)  whatever CAT tells you to install
for de-emphasis.  I recommend a .05 uF which puts the de-emphasis corner at
96 Hz.

7 years ago many folks complained about the terrible audio on CAT's high-end
controller, the CAT-1000.  Jim Hartzell, Jay Farmer and I did some research
and created the following article:
http://www.repeater

-builder.com/cat-auto/cat-1000-audio.html
The result was CAT changed the values of the capacitors in their production
to values that are similar to those suggested in the article.

So, now we find out you only get the good audio chain *if* you buy the more
expensive controller.   What a crock

Let us know how you make out, Jim...

Kevin Custer


Jim Brown wrote: 

This may be out in left field, but I have built several repeaters using the
CAT300 controller (not the CAT200) and the 300 had no way to de-emphasize
the discriminator audio.  I have used an external series 15 K and shunt .22
cap to supply the discriminator audio to the CAT300 and it sounds great.

 

Maybe one of your repeaters does not have the de-emphasis circuit installed,
or if it is available on the CAT200, maybe it is not set in the right mode.

 

73 - Jim  W5ZIT

Eric Lemmon   <[EMAIL PROTECTED]> wrote:


Subject: [Repeater-Builder] Micor Audio on VERY WEAK SIGNALS

Hi Guys,
A question for the MICOR fans that may have experienced a similar
dilemma I am having with one of our three Micor Repeaters. All three
are Micor VHF Bases, converted to repeater duty using the information
I obtained from this group. All three have Cat 200 Controllers and
unless I have missed something all are wired the same. 
When a weak signal, like from a portable radio or a station far away
comes in I have quite a bit of background (white noise). I have
noticed that if I listen to the audio from the Micor Speaker, it
appears to me that much of the white noise is gone and the signal is
much more understandable. Now this audio test is being performed with
the TX on, so I have determined that there is no noticeable desense.
The first thing I did was check the input audio into the Cat200 and
make sure the voltages were set to the book, which they were. I have
also taken into consideration that the Micor Speaker may reproduce the
audio better than the HT or Mobile, but there is still enough
difference that I wish the repeater audio, on weak signals only,
sounded as good as the Micor RX direct to the speaker. I am using
Discriminator Audio on all the repeaters and have the controller set
properly for that. The only way to explain a weak signal is the
background seems to be pumped up. Any ideas I will look into on my
next trip to Pa.

73 Jim KA2AJH Wellsville, NY

 

RE: [Repeater-Builder] Micor Audio on VERY WEAK SIGNALS

[Jim Cicirello]

Thanks Kevin. I have a list to include a 1/8" plug and clip leads. That will
tell me as you suggested. I have got a lot of good ideas from the group.

 

73 Jim  KA2AJH 

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Kevin Custer
Sent: Saturday, November 03, 2007 9:08 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Micor Audio on VERY WEAK SIGNALS

 

Put your MICOR speaker on the (mobile?) radio you are listening to, this 
will give you an apples to apples comparison.

I use a MICOR speaker in my work truck, it's connected to a Kenwood 742, 
and yes, it makes a BIG difference.

Kevin Custer

Jim Cicirello wrote:
> Hi Guys,
> A question for the MICOR fans that may have experienced a similar
> dilemma I am having with one of our three Micor Repeaters. All three
> are Micor VHF Bases, converted to repeater duty using the information
> I obtained from this group. All three have Cat 200 Controllers and
> unless I have missed something all are wired the same. 
> When a weak signal, like from a portable radio or a station far away
> comes in I have quite a bit of background (white noise). I have
> noticed that if I listen to the audio from the Micor Speaker, it
> appears to me that much of the white noise is gone and the signal is
> much more understandable. Now this audio test is being performed with
> the TX on, so I have determined that there is no noticeable desense.
> The first thing I did was check the input audio into the Cat200 and
> make sure the voltages were set to the book, which they were. I have
> also taken into consideration that the Micor Speaker may reproduce the
> audio better than the HT or Mobile, but there is still enough
> difference that I wish the repeater audio, on weak signals only,
> sounded as good as the Micor RX direct to the speaker. I am using
> Discriminator Audio on all the repeaters and have the controller set
> properly for that. The only way to explain a weak signal is the
> background seems to be pumped up. Any ideas I will look into on my
> next trip to Pa.
>
> 73 Jim KA2AJH Wellsville, NY

 

RE: [Repeater-Builder] Micor Audio on VERY WEAK SIGNALS

[Jim Cicirello]

I will recheck that Circuit Jim. It won't hurt to double check. 

 

73 and thanks JIM  KA2AJH

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Jim Brown
Sent: Sunday, November 04, 2007 12:25 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Micor Audio on VERY WEAK SIGNALS

 

This may be out in left field, but I have built several repeaters using the
CAT300 controller (not the CAT200) and the 300 had no way to de-emphasize
the discriminator audio.  I have used an external series 15 K and shunt .22
cap to supply the discriminator audio to the CAT300 and it sounds great.

 

Maybe one of your repeaters does not have the de-emphasis circuit installed,
or if it is available on the CAT200, maybe it is not set in the right mode.

 

73 - Jim  W5ZIT

Eric Lemmon <[EMAIL PROTECTED]> wrote:

Jim,

If the end-to-end audio pre-emphasis and de-emphasis is not complementary,
the audio will sound very bright, tinny, and noisy. Also, check to see if
the audio is getting pre-emphasized twice- that will really make it bright.
If you have access to an audio sweep generator and a digital storage
o-scope, you can look at the audio responses and track down where it is not
what is should be.

73, Eric Lemmon WB6FLY


-Original Message-
From: Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
yahoogroups.com
[mailto:Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
yahoogroups.com] On Behalf Of Jim Cicirello
Sent: Saturday, November 03, 2007 8:11 AM
To: Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
yahoogroups.com
Subject: [Repeater-Builder] Micor Audio on VERY WEAK SIGNALS

Hi Guys,
A question for the MICOR fans that may have experienced a similar
dilemma I am having with one of our three Micor Repeaters. All three
are Micor VHF Bases, converted to repeater duty using the information
I obtained from this group. All three have Cat 200 Controllers and
unless I have missed something all are wired the same. 
When a weak signal, like from a portable radio or a station far away
comes in I have quite a bit of background (white noise). I have
noticed that if I listen to the audio from the Micor Speaker, it
appears to me that much of the white noise is gone and the signal is
much more understandable. Now this audio test is being performed with
the TX on, so I have determined that there is no noticeable desense.
The first thing I did was check the input audio into the Cat200 and
make sure the voltages were set to the book, which they were. I have
also taken into consideration that the Micor Speaker may reproduce the
audio better than the HT or Mobile, but there is still enough
difference that I wish the repeater audio, on weak signals only,
sounded as good as the Micor RX direct to the speaker. I am using
Discriminator Audio on all the repeaters and have the controller set
properly for that. The only way to explain a weak signal is the
background seems to be pumped up. Any ideas I will look into on my
next trip to Pa.

73 Jim KA2AJH Wellsville, NY 

 

 __
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 

 

RE: [Repeater-Builder] Re: Micor Audio on VERY WEAK SIGNALS

[Jim Cicirello]

Thanks Laryn, I will take the service monitor and on duplex I can put in 2
or 3 kHZ and read the output and see if it is the same. Good idea!

 

73 JIM

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Laryn Lohman
Sent: Saturday, November 03, 2007 3:15 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Micor Audio on VERY WEAK SIGNALS

 

Jim, this can easily happen with any brand of repeater, if audio is
not adjusted correctly. 

The transmitter has a deviation control, yes? Well, that control has
 to do with what I am talking about. Some transmitters could
have another control called -mic gain-, -mic sensitivity-, something
else, or not have it at all. But there is an adjustment(s) somewhere
in your audio chain that does exactly the same thing. This is  audio you are feeding to your transmitter from your controller,
BEFORE the clipper/filter.

Normally, you first set the deviation control, usually for nominal 5
kc. deviation, making sure that the clipper is being "hit" hard enough
to be the stage that is determining the max deviation. Now, you set
the amount of audio into the transmitter, normally for maybe 2 kc.
in/2 kc. out of the repeater. It is tempting to crank this a little,
because the repeater audio gets a little louder, and louder is good,
right?  But adjusting this to perhaps 2 in/3 or 4 out invariably
causes noisy signals coming into the repeater to get (sound) noisier;
the amount depending on how much you have cranked up the audio. I
know, because I have, and am still tempted to do so myself. Check
this ratio, and stick to 2 in/2 out.

Laryn K8TVZ


--- In Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
yahoogroups.com, "Jim Cicirello" <[EMAIL PROTECTED]>
wrote:
>
> Hi Guys,
> A question for the MICOR fans that may have experienced a similar
> dilemma I am having with one of our three Micor Repeaters. All three
> are Micor VHF Bases, converted to repeater duty using the information
> I obtained from this group. All three have Cat 200 Controllers and
> unless I have missed something all are wired the same. 
> When a weak signal, like from a portable radio or a station far away
> comes in I have quite a bit of background (white noise). I have
> noticed that if I listen to the audio from the Micor Speaker, it
> appears to me that much of the white noise is gone and the signal is
> much more understandable. Now this audio test is being performed with
> the TX on, so I have determined that there is no noticeable desense.
> The first thing I did was check the input audio into the Cat200 and
> make sure the voltages were set to the book, which they were. I have
> also taken into consideration that the Micor Speaker may reproduce the
> audio better than the HT or Mobile, but there is still enough
> difference that I wish the repeater audio, on weak signals only,
> sounded as good as the Micor RX direct to the speaker. I am using
> Discriminator Audio on all the repeaters and have the controller set
> properly for that. The only way to explain a weak signal is the
> background seems to be pumped up. Any ideas I will look into on my
> next trip to Pa.
> 
> 73 Jim KA2AJH Wellsville, NY
>

 

RE: [Repeater-Builder] Micor Audio on VERY WEAK SIGNALS

[Jim Cicirello]

Thanks for the information Eric. I don't have the equipment you mentioned,
but I will retrace everything on this repeater compared to the original and
see if something is different that hopefully pops out.

 

73 Jim  KA2AJH

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Eric Lemmon
Sent: Saturday, November 03, 2007 11:35 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Micor Audio on VERY WEAK SIGNALS

 

Jim,

If the end-to-end audio pre-emphasis and de-emphasis is not complementary,
the audio will sound very bright, tinny, and noisy. Also, check to see if
the audio is getting pre-emphasized twice- that will really make it bright.
If you have access to an audio sweep generator and a digital storage
o-scope, you can look at the audio responses and track down where it is not
what is should be.

73, Eric Lemmon WB6FLY


-Original Message-
From: Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
yahoogroups.com
[mailto:Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
yahoogroups.com] On Behalf Of Jim Cicirello
Sent: Saturday, November 03, 2007 8:11 AM
To: Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
yahoogroups.com
Subject: [Repeater-Builder] Micor Audio on VERY WEAK SIGNALS

Hi Guys,
A question for the MICOR fans that may have experienced a similar
dilemma I am having with one of our three Micor Repeaters. All three
are Micor VHF Bases, converted to repeater duty using the information
I obtained from this group. All three have Cat 200 Controllers and
unless I have missed something all are wired the same. 
When a weak signal, like from a portable radio or a station far away
comes in I have quite a bit of background (white noise). I have
noticed that if I listen to the audio from the Micor Speaker, it
appears to me that much of the white noise is gone and the signal is
much more understandable. Now this audio test is being performed with
the TX on, so I have determined that there is no noticeable desense.
The first thing I did was check the input audio into the Cat200 and
make sure the voltages were set to the book, which they were. I have
also taken into consideration that the Micor Speaker may reproduce the
audio better than the HT or Mobile, but there is still enough
difference that I wish the repeater audio, on weak signals only,
sounded as good as the Micor RX direct to the speaker. I am using
Discriminator Audio on all the repeaters and have the controller set
properly for that. The only way to explain a weak signal is the
background seems to be pumped up. Any ideas I will look into on my
next trip to Pa.

73 Jim KA2AJH Wellsville, NY 

 

[Repeater-Builder] Micor Audio on VERY WEAK SIGNALS

[Jim Cicirello]

Hi Guys,
A question for the MICOR fans that may have experienced a similar
dilemma I am having with one of our three Micor Repeaters. All three
are Micor VHF Bases, converted to repeater duty using the information
I obtained from this group. All three have Cat 200 Controllers and
unless I have missed something all are wired the same. 
When a weak signal, like from a portable radio or a station far away
comes in I have quite a bit of background (white noise). I have
noticed that if I listen to the audio from the Micor Speaker, it
appears to me that much of the white noise is gone and the signal is
much more understandable. Now this audio test is being performed with
the TX on, so I have determined that there is no noticeable desense.
The first thing I did was check the input audio into the Cat200 and
make sure the voltages were set to the book, which they were. I have
also taken into consideration that the Micor Speaker may reproduce the
audio better than the HT or Mobile, but there is still enough
difference that I wish the repeater audio, on weak signals only,
sounded as good as the Micor RX direct to the speaker. I am using
Discriminator Audio on all the repeaters and have the controller set
properly for that. The only way to explain a weak signal is the
background seems to be pumped up. Any ideas I will look into on my
next trip to Pa.

73 Jim  KA2AJH  Wellsville, NY 

RE: [Repeater-Builder] Re: Kenwood TKR-850 Driver FET Wanted

[Jim Cicirello]

Thanks Skip that is what I am looking for.

 

73 JIM

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of skipp025
Sent: Friday, October 19, 2007 5:57 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Kenwood TKR-850 Driver FET Wanted

 

Hi Jim, 

I as an Authorized Kenwood Dealer would (and will) tell you to 
call: 

PacParts Inc. 
15024 Staff Court 
Gardena, CA 90248 
Phone: 800-262-1312 

...with your credit card in hand. PacParts is one of at least 
two Authorized Kenwood LMR Part Sources able to deal direct with 
the public if your favorite Kenwood Radio Shop doesn't supply 
the service. 

cheers, 
skipp 
www.radiowrench.com 
(my 50 cent plug)

> "Jim Cicirello" <[EMAIL PROTECTED]> wrote:
>
> I am looking for a Driver FET, Q4, Part # PD55008S FOR A Kenwood
> TKR-850 UHF.
> If anyone has one in stock or can point me in the right direction,
> please contact me at [EMAIL PROTECTED] The number shown on the parts
> list doesn't come up on their website.
> 73 Jim KA2AJH
>

 

[Repeater-Builder] Kenwood TKR-850 Driver FET Wanted

[Jim Cicirello]

I am looking for a Driver FET, Q4, Part # PD55008S FOR A Kenwood
TKR-850 UHF.
If anyone has one in stock or can point me in the right direction,
please contact me at [EMAIL PROTECTED] The number shown on the parts
list doesn't come up on their website.
73 Jim KA2AJH
  

RE: [Repeater-Builder] Re: MOTOROLA Rib Error

[Jim Cicirello]

Hi Adam, Thanks for the Info. on the HP Handheld. I am going to Dayton and
may find one. Small and compact too.

 

Ron, N9EE, My Spectra does seem to be the most temperamental.  The Maxtrac
and even the Maratrac seem to load the 1st time. I have touched up all the
DB25 connections on the rib and I got my programming done. I will have to
wait until next time and see what happens.  Always an adventure.  

 

Thanks JIM  KA2AJH

 

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Adam Vazquez Kb2Jpd
Sent: Tuesday, May 15, 2007 11:00 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: MOTOROLA Rib Error

 

You should consider using one of the old HP handheld PCs. It uses the old
tech and it comes with a comport. Friends of mine have been using it with
the old RIB software and its work fine with it. FYI. http://www.google.
<http://www.google.com/search?q=HP+LX+200&ie=utf-8&oe=utf-8&aq=t&rls=org.moz
illa:en-US:official&client=firefox-a>
com/search?q=HP+LX+200&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official
&client=firefox-a

Adam Kb2jpd

On 5/15/07, Ron Wright, Skywarn Coodinator <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]> net> wrote:

Jim,

Wonder if this is with one of your radios or is consistant with others.

One note is the speed of the computer. RS232 at a particlar baud rate 
is the same for all computers except for the data speed determind by 
the time between bytes. Some have commented newer high speed computers 
work too fast. The radio might not be able to respond quickly enough 
if the data is fed too fast. I use an old 486.

If your situation is intermitment it might be on the edge of where it 
will work and not work.

73, ron, n9ee/r

--- In Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com>
yahoogroups.com, "Jim Cicirello" <[EMAIL PROTECTED]> 
wrote:
>
> Hi Guys,
> I am having an intermittent programming problem with my Motorola Rib
> Box. This is
> one of the after market rib boxes that works great 95% of the time and
> the other 5% I get an error message Serial BUS FAILURE POWER FAULT. My
> radio is powered up, my battery is good in the rib box and the box is
> on, I have used two different cables, and still the error.What would I
> look for? I have looked for solder joints on the db25's and all look
> good. I have pinned out the cables, all good. Any ideas would be
> greatly appreciated. Thank JIM
>

 

 

RE: [Repeater-Builder] MOTOROLA Rib Error

[Jim Cicirello]

Thanks to Eric, Bob and all who gave me input to consider. I ill try some
conversions and hope for the best.

73 JIM  KA2AJH

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Jim Cicirello
Sent: Saturday, May 12, 2007 8:52 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] MOTOROLA Rib Error

 

Hi Guys,
I am having an intermittent programming problem with my Motorola Rib
Box. This is
one of the after market rib boxes that works great 95% of the time and
the other 5% I get an error message Serial BUS FAILURE POWER FAULT. My
radio is powered up, my battery is good in the rib box and the box is
on, I have used two different cables, and still the error.What would I
look for? I have looked for solder joints on the db25's and all look
good. I have pinned out the cables, all good. Any ideas would be
greatly appreciated. Thank JIM 

 

[Repeater-Builder] MOTOROLA Rib Error

[Jim Cicirello]

Hi Guys,
I am having an intermittent programming problem with my Motorola Rib
Box. This is
one of the after market rib boxes that works great 95% of the time and
the other 5% I get an error message Serial BUS FAILURE POWER FAULT. My
radio is powered up, my battery is good in the rib box and the box is
on, I have used two different cables, and still the error.What would I
look for? I have looked for solder joints on the db25's and all look
good. I  have pinned out the cables, all good. Any ideas would be
greatly appreciated. Thank JIM  

RE: [Repeater-Builder] Motorola Spectra

[Jim Cicirello]

Hi Andy,

I built mine from the schematic on Batlabs, see
http://www.batlabs.com/images/speclo.gif

 

73 JIM  KA2AJH

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Bob M.
Sent: Saturday, May 12, 2007 5:11 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Motorola Spectra

 

Take a look on www.repeater-builder.com, in the
Motorola area, Spectra section. There's an article
about building your own low/mid power programming
cable. $6 in parts. You probably won't find it on eBay
for twice that price.

Bob M.
==
--- "Andrew G." <[EMAIL PROTECTED]  com> wrote:

> Thanks Don, I had a feeling that motorola would do
> something like that. I'll look around the shop for a
> low/mid power cable and try it.otherwise off to
> ebay.
> 
> Andy KC2GOW
> 
> Don KA9QJG <[EMAIL PROTECTED]  COM> wrote:
> I have a Motorola Spectra in a Case
> with built in power Supply on 800Mhz it is called a
> Desktrac You said You programmed a 100 Watt Spectra
> with No Problem, I also have a VHF And UHF Both
> 110 Watt Spectra's . I have to use a LOW MID Power
> cable for the Base one like You described and a
> Different High Power Cable to Program the 110 watt
> Units I hope this helped 
> 
> Good Luck 
> 
> Don KA9QJG

__Pinpoint customers
who are looking for what you sell. 
http://searchmarket  ing.yahoo.com/

 

RE: [Repeater-Builder] Stationmaster Disassembly

[Jim Cicirello]

Hi Paul,

I have been following this post as I have a stationmaster to disassemble.
Did you take a large torch to the top metal point while the guts were pulled
away from the tip? When you go to reassemble, is there anything that needs
to be heated again on the top?

 

Thanks Jim

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Paul Metzger
Sent: Friday, April 27, 2007 9:59 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Stationmaster Disassembly

 

I had to take a large propane torch to the the of mine just last week in
order to get it apart.

 

Paul Metzger

K6EH

 

---

 

 

 

On Apr 27, 2007, at 12:54, Steve Hutzley wrote:






Folks,

We took down the 220 MHz "Phelps Dodge Model 200" Stationmaster off our
tower to see if it can be rescued. There is no gel-coat left on it at all.

I got the three screws around the perimiter of the mounting tube (aluminum)
out, I found a stainless set screw in the copper tip. I also found three
7/16" hex head bolts around the perimiter of the RF connector. It appears
that there is some sort of rubber bladder inside the mounting tube as well. 

Any clues, tips, ideas or suggestions so we can see what the internals look
like before we go to the trouble of re-gelling it?

Thanks
Steve



 

  _  

Ahhh...imagining that irresistible "new car" smell?
Check out new
  cars
at Yahoo! Autos. 

 

 

RE: [Repeater-Builder] Re: Capacitor value

[Jim Cicirello]

Hi Mike,

I happen to be on the computer when the question was posed. I remembered the
chart and sent the message immediately. It seemed that hours went by before
my post ever appeared. Other newer posts were asked and answered, so I don't
know why there such a lag time before my message got through. Other times my
questions and replies seem very fast.  Hope you didn't spend much time on
the chart. As always we appreciate your efforts to help us all. 

 

73 JIM  KA2AJH  

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Mike Morris WA6ILQ
Sent: Wednesday, February 21, 2007 3:09 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: Capacitor value

 

At 08:45 AM 02/21/07, you wrote:

Here is a handy wall chart that takes the guess work out of IDing
capacitors.
 
http://www.radiodaz 
e.com/capacitor_ID.htm
 
73 JIM  KA2AJH  


Wish I'd seen that before I started reinventing the wheel for the page
that's about half done...

Mike WA6ILQ

 

RE: [Repeater-Builder] Re: Capacitor value

[Jim Cicirello]

Here is a handy wall chart that takes the guess work out of IDing
capacitors.

 

http://www.radiodaze.com/capacitor_ID.htm

 

73 JIM  KA2AJH  

 

 

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Laryn Lohman
Sent: Wednesday, February 21, 2007 11:38 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Capacitor value

 

--- In Repeater-Builder@ 
yahoogroups.com, DCFluX <[EMAIL PROTECTED]> wrote:
>
> 0.01uF or 10,000pF

Hmm... OK, just trying to clarify. 103 = .01uf? You're sure, right?

Laryn K8TVZ

 

[Repeater-Builder] Antenna dBd Vs dBd

[Jim Cicirello]

I found this article on Antenna dBd Vs dBi that explains why some
antennas show more gain than others. This is because the gain used in
measuring some antennas is 2.15 dB more when expressed in dBi.

http://www.maxstream.net/support/knowledgebase/article.php?kb=146

Antenna Gain: dBi vs. dBd Decibel Detail
Antenna gain is measured in either dBi or dBd.
 
It is important to note that antenna gain is different than amplifier
gain. Antennas do not have a power source that allows the antenna to
create additional energy to boost the signal. An antenna is similar to
a reflective lens in principle - it takes the energy available from
the source and focuses it over a wider or narrower area.
 
Antenna gain is then a measure of the amount of focus that an antenna
can apply to the incoming signal relative to one of two reference
dispersion patterns. MaxStream specifies all antenna gains in dBi.
 
dBi is the amount of focus applied by an antenna with respect to an
"Isotropic Radiator" (a dispersion pattern that radiates the energy
equally in all directions onto an imaginary sphere surrounding a point
source). Thus an antenna with 2.1 dBi of gain focuses the energy so
that some areas on an imaginary sphere surrounding the antenna will
have 2.1 dB more signal strength than the strength of the strongest
spot on the sphere around an Isotropic Radiator.
 
dBd refers to the antenna gain with respect to a reference dipole
antenna. A reference dipole antenna is defined to have 2.15 dBi of
gain. So converting between dBi and dBd is as simple as adding or
subtracting 2.15 according to these formulas:

* dBi = dBd + 2.15
* dBd = dBi - 2.15

Specifying antenna gain in dBd means that the antenna in question has
the ability to focus the energy x dB more than a dipole.

Beam Width
Because higher gain antennas achieve the extra power by focusing in on
a smaller area it is important to remember that the greater the gain,
the smaller the area covered as measured in degrees of beam width
(think of an adjustable beam flashlight). In many cases a high gain
antenna is a detriment to the system performance because the system
needs to have reception over a large area.

Hope this helps, it helped me understand better what some Mfg may be
using.

73 JIM  KA2AJH

[Repeater-Builder] WTB Micor Base/Repeater Power Plug

[Jim Cicirello]

Hi Guys,
I am looking for a five pin power plug for a Micor Base/Repeater. This
is the plug that runs from the Micor Power Supply to the backplane and
furnishes the 9.6V, A-, A+, Audio A+. The configuration would look
like this:
 13
 []  []
   []  []  []
6   5   4
 Viewed from the wire end. 
Note: 1 & 3 and offset to the right of 5 & 4. The exact pin placement
did not reproduce properly on another post and may not on this one. 

I am hoping that someone might have one from a junked power supply,
although they may have supplied these as a replacement part.

Please contact me off line at [EMAIL PROTECTED]

73 JIM  KA2AJH

RE: [Repeater-Builder] Re: Ok, here's a weird one....

[Jim Cicirello]

Dennis,

I have the same problem also. Did you place the filter between the antenna
and duplexer? I have mine installed between the RX and Duplexer. Depending
the WX I can hear the FM Station on my two meter repeater, but thought the
RF was getting into the cables, etc. I may have to switch the location of my
filter.

 

Thanks JIM  KA2AJH

 

 

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of numberone5call
Sent: Tuesday, February 13, 2007 9:26 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Ok, here's a weird one

 

Ken;

I can only tell you what worked for myself and a friend w another 
repeater. Both repeaters were/are located on hi-power FM broadcast 
towers. Both FM broadcast radio transmissions cud barely be heard on 
the outputs of the repeaters (only when the rptrs were tx'n, under 
the tx audio). Both cases a dci bandpass filter eliminated the 
rebroadcast of the FM stations. 
This are both 2mtr repeaters. 
Hope this helps!!!

Dennis no5c
146.970 no5c/R pl100hz
444.500 w5LRG/R
Lauderdale Repeater Group w5LRG
Meridian, MS

--- In Repeater-Builder@ 
yahoogroups.com, Ken Arck <[EMAIL PROTECTED]> wrote:
>
> Have a customer with the following issue:
> 
> Scenario: Amateur repeater (Mastr II) installed at a 100,000 FM 
radio 
> xmtr site.
> 
> Issue: Very low level audio of radio station appears on Mastr II's 
> xmtr (yes, external controller). Repeater owner hasn't fully 
> explained what "very low level" means. But regardless.
> 
> Question: The only way I see this happening is due to some AM 
> component on radio station's transmitter.
> 
> Thoughts?
> 
> Ken
> --
---
> President and CTO - Arcom Communications
> Makers of the world famous RC210 Repeater Controller and 
accessories.
> http://www.arcomcon  trollers.com/
> Authorized Dealers for Kenwood and Telewave and
> we offer complete repeater packages!
> AH6LE/R - IRLP Node 3000
> http://www.irlp.  net
>

 

RE: [Repeater-Builder] MICOR BASE OR REPEATER ON BATTERIES?

[Jim Cicirello]

A Micor Base/Repeater Power Supply is a dual supply with 12+ plus 10.8 +
Volts. As you look at the power supply the two large terminals with the Red
and Black Lead going to the PA is 12 Volts, although it actually measure
about 14 volts. On the backplane there is another small plug that comes out
of the power supply and that plug supplies 10.8 Volts, plus 12 Volt
Regulated for the Receiver, Exciter, etc. So you could run it on battery,
except you would have to build a 10.8 volt regulated circuit from say a
LM317 regulator to adjust the 12 + to 10.8 volts also. So Yes, it can be run
on 12 volt battery power. 

 

JIM  KA2AJH

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of twoway_tech
Sent: Monday, January 29, 2007 3:37 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] MICOR BASE OR REPEATER ON BATTERIES?

 

Does anybody have any info on how to get a Micor bas or repeater to
run on batteries12V)? The only micor we ever tried to run on 12V
wouldn't even turn on. I seem to recall that the power supply output
was 15V. Anyone ever come accrossed this?

Thanks,

Jordan

 

RE: [Repeater-Builder] UHF Micor Off Frequency

[Jim Cicirello]

Put your crystal into another element. I had the same problem and the second
element allowed me to center it right on Freq.

Good Luck  JIM  KA2AJH  

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Saturday, January 27, 2007 12:29 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] UHF Micor Off Frequency

 

This is why year after year, on this list, the word is continually put out: 

Send the elements in to have the crystal manufacturer install the crystals,
temperature compensate, and net them to frequency. They know what to do.
Correctly.

Don't waste an otherwise excellent performing MICOR radio by messing up the
one piece you have control of - the crystals. You don't save money in the
long run by being cheap on the crystals and crystal manufacturer's services.


Do it right the first time and be done with it - for good.

LJ

-Original Message-
>From: Laryn Lohman <[EMAIL PROTECTED]  com>
>Sent: Jan 27, 2007 12:03 AM
>To: Repeater-Builder@ 
yahoogroups.com
>Subject: [Repeater-Builder] UHF Micor Off Frequency
>
>I just installed a new TX crystal into a KXN1052 channel element on a
>Micor exciter today. The crystal is from ICM. It will not come on
>channel. The ordered frequency is 445.125; it comes no closer than
>445.1375. The crystal arrived late Friday PM, and upon installation
>Friday evening, the problem was discovered. 
>
>I realize I may need to contact ICM when the office opens on Monday
>since this is a new crystal. But, is there an easy and reliable way
>to warp it down without the need to perhaps send the crystal back? A
>small cap across the crystal? 
>
>Related question--why would a crystal from a reliable manufacturer be
>off in the frist place. Are there tolerances in the channel element
>that can sometimes add up the wrong way? I have some other elements
>of the same number; is it worth trying the crystal in another one?
>
>Laryn K8TVZ
>

 

RE: [Repeater-Builder] Re: Switching Power Supply vs. Astron Etc.

[Jim Cicirello]

Hi Skipp,

I am concerned about noise from even the top line switching supplies to my
equipment and the other equipment in the tower site. I have heard it said
that placing a battery (over the supply, on the supply, somewhere) will
remove any of the noise. In your experience does this work and if so how is
the battery configured on say a 70 amp switching supply?

Thanks JIM  KA2AJH

 

 

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of skipp025
Sent: Sunday, January 14, 2007 12:10 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Switching Power Supply vs. Astron Etc.

 


> If the supply you are using is fine why change? Yes, you 
> would gain some amperage capacity. 

Relative example... 
A room full of Motorola Repeater Stations in non constant 
service costs about $30/month each to operate. Put the repeater 
into lock to talk mode (IRLP or Echolink) and the energy cost 
rises by almost a third (typical). 

One of the energy soaks is the well designed and constructed 
transformers within the repeater power supplies. 

Replacing the hungry Motorhead Power Supplies cuts at least 
1/2 off the power bill, which is much nicer when you're the one 
having to pay it. 

> However, switching supplies are inherently noisy. You 
> could experience problems from these noises. I realize 
> we are not talking about HF. But, it is possible to wind 
> up with a problem you don't have now. 

Many of the common 13.8 vdc switchers sold to the ham market 
will hose up at least the 160 meter ham band no problem, which 
is just above the am broadcast band I have on the shop when 
XM is stale. 

> If that 50 amp supply is fine, I see no advantage in the change.
> Dave 

Cheers Dave, 
skipp 

 

RE: [Repeater-Builder] Re: Super Sataionmaster Disassembly

[Jim Cicirello]

George,

Can you CC me, as I would like to have that information also? I have one to
take apart also.

 

73 JIM  KA2AJH

[EMAIL PROTECTED]

 

 

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of George Sintchak
Sent: Saturday, January 13, 2007 12:25 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Super Sataionmaster Disassembly

 

Steve, I will send you an email with description & pictures of PD220 
antenna dissassenbly I did about a year ago. I want to contribute this 
as an article for the group, but didn't have the time to finish it up 
yet, but all the info you need is included. Need ur email address.

George / WA2VNV

 

[Repeater-Builder] CTCSS Tone Encode on Mastr II

[Jim Cicirello]

Hi Guys, 
I can use a little advice on hooking a TS32 to a Mastr II. I am using
a new TS32 for encode only on the Mastr II TX. I have injected it into
the exciter where the stock encoder went, pin 2 on the exciter which
is adjustable with the CTCSS Pot on the Mastr II Exciter. I am using
203.5 Hz and at 750 Hz deviation it sounds like the deviation is much
greater than 750 Hz. When the courtesy beep and the ID sounds, I can
hear a little mixing and the tones are not a clear as it is without
the CTCSS. I understand that the PM Exciters sound a little different
so I used the 100K resistor in series with the tone output and put a
.1 uf cap to ground. All this does is pull down the deviation to way
less than 750 Hz and when I adjust it back up, there is no different
than using the output of the TS32 direct to the exciter. Am I missing
something that I may do to clear up the TX audio. 

RE: [Repeater-Builder] E-Mail Change of Address

[Jim Cicirello]

Steve,

I went into all my Yahoo Groups to include Repeater-Builder and changed by
E-Mail address already. Just took the one off and added the G-Mail. Will
that take alright? I have heard G-mail is good.

73 Jim KA2AJH

 

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Steve Bosshard (NU5D)
Sent: Saturday, December 30, 2006 4:01 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] E-Mail Change of Address

 

Before you change, be sure and send a repeater-builder-
<mailto:[EMAIL PROTECTED]>
[EMAIL PROTECTED] email (and same for other lists), then when your
new account becomes active, send a repeater-builder-
<mailto:[EMAIL PROTECTED]>
[EMAIL PROTECTED] email.

Probably telling you something you already know, but just in case.  You will
like the gmail account - no more changes unless you want them.  Steve NU5D 



On 12/30/06, Jim Cicirello <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> com>
wrote:

Effective January 8th Adelphia/Time Warner will be gone. My new contact
information is:

 

[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> com 

 

 

Jim Cicirello

181 Stevens Street

Wellsville, New York 14895 

585-593-4655 Home

716-498-3500 Cell




-- 
Ham Radio Spoken Here.NU5D 

 

[Repeater-Builder] E-Mail Change of Address

[Jim Cicirello]

Effective January 8th Adelphia/Time Warner will be gone. My new contact
information is:

 

[EMAIL PROTECTED]

 

 

Jim Cicirello

181 Stevens Street

Wellsville, New York 14895

585-593-4655 Home

716-498-3500 Cell

[Repeater-Builder] Mastr II PA's

[Jim Cicirello]

Happy Holidays to the group! Is there anyone out there that is
stocking Mastr II parts, like the Mobile PA's for a reasonable price?
I used my last one yesterday and Dayton is still down the road.
Thanks JIM  KA2AJH  

RE: [Repeater-Builder] Re: Pre-selector preamps

[Jim Cicirello]

Did you look into the Hamtronics Preamp with helicals? www.hamtronics.com
 . 

I have used the older one in the past it they worked well.

73 JIM  KA2AJH

 

 

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of VE3ID
Sent: Saturday, December 23, 2006 8:48 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: Pre-selector preamps

 

Thank you for that link. GLB Electronics was the company founded by Gil 
Boelke, W2EUP, who is now a silent key. He helped us a great deal as we 
set up the first amateur 2m repeater in Canada and was a true ham and a 
good friend. I am glad to see his products live on! I still have one 
of his UHF transmitters somewhere that I hope to put back on the air 
someday.

73

Nigel
ve3id/va3mcu

Dan Hancock wrote:
> Actually the famous GLB preamp is still available. After a couple 
> coporate buy-outs the new company is called Simrex and they still sell 
> the original GLB unitand the even offer and amateur radio discount.
> Here is the web page.
> http://www.simrex. 
com/site/products/special.htm 
> 
com/site/products/special.htm>
> 
> .
>
> 

-- 
Nigel Johnson
MSc., MIEEE, MCSE
VE3ID/G4AJQ/VA3MCU

http://nigel.  homelinux.net
http://va3mcu.  ham-radio-op.net

You can reach me by voice on Skype: TILBURY2591

If time travel ever will be possible, it already is. Ask me again yesterday

This e-mail is not and cannot, by its nature, be confidential. En route from
me to you, it will pass across the public Internet, easily readable by any
number of system administrators along the way. 

 

RE: [Repeater-Builder] GE Mastr II Station

[Jim Cicirello]

To Ralph W4XE,

Your website http://www.qsl. 
net/w4xe/rpttech/rpttech21.htm on the GE Mastr II Conversion is excellent
with great pictures. I stored the web address for future use. Thanks for
sharing this great project with the group.

 

73 Happy Holidays, de KA2AJH  Jim  



 

 

 

  _  

From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Ralph Hogan
Sent: Wednesday, December 20, 2006 7:20 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] GE Mastr II Station

 

Hey Bill,

I pull one of the cable connectors (j1203) plugged into the IDA and insert a
small breakout molex to molex cable to get to the rx & tx audio pathes plus
PTT to feed up to the ham controller. In this way the internal GE rptr
controller can be restored to normal and used in a pinch by removing the
breakout cable. I've documented my version of the GE Master II IDA
conversion on my website.

http://www.qsl. 
net/w4xe/rpttech/rpttech21.htm

Includes a schematic/pictorial of the external ham rptr controller wiring, a
list of IDA connector pinout descriptions and IDA board layout and pot
locations.

73's
Ralph W4XE

-Original Message-
From: Repeater-Builder@ 
yahoogroups.com
[mailto:Repeater-Builder@ 
yahoogroups.com]On Behalf Of Bill
Sent: Tuesday, December 19, 2006 11:24 PM
To: Repeater-Builder@ 
yahoogroups.com
Subject: [Repeater-Builder] GE Mastr II Station

Hi!

Does anyone have repeater conversion info on the newer style GE Mastr
II stations with the all in one controller, metering and speaker
(19B234871). I have a VHF station I wish to convert but I would like
to keep the local station controls, speaker, mic and metering.

Thanks!

Bill
N6YMZ

 

RE: [Repeater-Builder] TKR-720/820

[Jim Cicirello]

Try
http://www.kenwoodparts.com/parts/search.php?kwparts_Session=15dece920f6b0c9
e54caeccb4cb35203

This website advertises over 100,000 Kenwood 
Parts.

Good Luck  Jim  KA2AJH





























































   


Jim Cicirello
181 Stevens Street
Wellsville, New York 14895
585.593.4655
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of WD7F - John in Tucson
Sent: Sunday, November 26, 2006 2:46 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] TKR-720/820

Can anyone tell me a source for parts for the TKR-720/820 repeater.  Is
Kenwood the only source?  I have a Signaling Unit that crapped out.
Somebody on the board is dragging down the 5V regulated and it's not easy
for this old guy to see that tiny stuff, let alone solder it.

de WD7F
John in Tucson





 
Yahoo! Groups Links

RE: [Repeater-Builder] Simplex repeater Controller

[Jim Cicirello]

Hi Randy,
Check out the NHRC Controllerhttp://www.nhrc.net/nhrc-2/

This unit has a SIMPLEX Repeater Mode. Fully assembled $130.00 also
available in kit. This is a good company I have their controllers. 
Good Luck  JIM  KA2AJH





http://www.nhrc.net/nhrc-2/

Jim Cicirello
181 Stevens Street
Wellsville, New York 14895
585.593.4655
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Randy Elliott
Sent: Thursday, April 27, 2006 10:20 AM
To: Repeater Builders Builders
Subject: [Repeater-Builder] Simplex repeater Controller

Greetings to the Group

I need a little  advise. I am putting together a simplex repeater for  
a non-profit group that already has a frequency but they need to  
extend their range. Basically what I an looking for is a DVR type  
controller to record and spit back out on the same radio.
Does anyone know of something available that is not the cost of a  
full blown controller?

Thanks

Randy Elliott VE3JPU




 
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[Repeater-Builder] 8870 Tone Decoder IC

[Jim Cicirello]

Thanks to everyone who answered my inquiry as to where I could obtain 
a 8870 Tone Decoder Chip. It appears that BGMICRO, 
http://www.bgmicro.com/search1.asp?sid=
is the only parts supplier that has them. The Repeater Controller Mfg. 
buys them in large quantities direct from the IC Mfg Zarlink. Ken from 
Arcom has been very helpful with information on the IC and a 
willingness to assist as he buys them in large quantities for his 
Arcom Line of Controllers. 
Thanks again,
JIM  KA2AJH  Wellsville, NY










 
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[Repeater-Builder] 8870 Tone Decoder

[Jim Cicirello]

I am trying locate a Tone Decoder Chip 8870 ( Zarlink MT8870DE).
These are no longer available from Jameco or Digikey. Does anyone know 
where I can buy a chip or two? It fits the ICS Controller and is said 
to be a popular chip but both companies no longer stock the chip.


73 JIM  KA2AJH  Wellsville, NY







 
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[Repeater-Builder] Repeater Builder 1480 VHF/UHF Antenna

[Jim Cicirello]

Hello to Kevin and the group:
I am putting together my 1480 VHF/UHF Dual Band 6/8 dB Collinear 
Base Station Antenna. While checking the pigtail I made up for the 
antenna, I discovered that I didn't have any measurable continuity 
between the center conductor inside the radome to the center of the 
S0239, however I have 0 ohms between the center element in the 
radome to the outside of the S0239, i.e. ground. There is a matching 
coil in the area of the radials. I am presuming that the center of 
the S0239 is probably connected to the center element through a 
capacitive coupling. For clarity, I brought out the second antenna 
and checked it without the pigtail and get the same readings. I am 
sure the antenna is OK, but would like to understand how the center 
of the antenna is coupled to the center of the S0239. The larger 
9/11 dB version I bought at Dayton does not have any measurable 
continuity between the center and ground, so I presume it is the 
same design, just larger in size for gain.  This is a great antenna! 
Any information on how these Repeater Builder 1480 Antenna work, 
would solve my curiosity. 

73 JIM  KA2AJH  Wellsville, N.Y. 








 
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RE: [Repeater-Builder] Switching PL on and of on a TS-32

[Jim Cicirello]

I had a similar problem when my TS-32, only mine made a noise when the PL
first was switched on. I also wanted the PL to follow the CAS so there was
no PL on the repeater tail. I turned my TS-32 on all the time and switched
the CTCSS in and out with a 2n Transistor driving a Mini Relay. It works
great. Good Luck.  KA2AJH  Jim  Wellsville, NY



Jim KA2AJH  Wellsville, N.Y. 
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Joe
Sent: Sunday, March 19, 2006 2:13 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Switching PL on and of on a TS-32

I decided to try the method someone suggested for keying the repeater 
transmitter encode PL on and off with active COS.  I switched the ground 
connection on and off to key the TS-32 PL deck.  This works, except that 
when the tone turns off I get a sound that is best described as "squeege" 
as it shuts off.  I assume this is the oscillator loosing voltage and the 
tone changing frequency.  Anybody else have this problem?  I'm about to 
just go back to switching the PL audio line and leaving the TS-32 on all 
the time..

73, Joe, K1ike






 
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Yahoo! Groups Links

<*> To visit your group on the web, go to:
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RE: [Repeater-Builder] A couple of Micor questions..

[Jim Cicirello]

Mike, 
How about getting the ground you need for the PA from your controller
instead of the backplane? When the controller goes into PTT it gives you the
timing you need, i.e. the tail, etc. If the controller goes to ground on the
PTT, you could get your ground there. If it goes high, you could use a
transistor to invert the positive to ground. You wouldn't have to go to the
backplane. This is one approach that may be simple?

Good Luck   73 

Jim KA2AJH  Wellsville, N.Y. 

_
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Mike Perryman
Sent: Monday, March 13, 2006 10:52 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] A couple of Micor questions..

Thanks Jim,
I thought that was the case, but wasn't sure.  I had played with putting one
of these amps on a 2m machine about 5yrs ago...  but didn't recall just
exactly how I made it play.  There is a single pin below what looks to be
metering attachments (4 each, in a parelellagram above it).  The only other
question would be the header pins on the transmitter interconnect board and
how they figure into the mess...??  I have 2 other chassis, and they have
the header pins...  just didn't want to have to do major surgery to change
the interconnect board.

Thanks again,
 73
Mike Perryman
www.k5jmp.us


 -Original Message-
From:   Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED]  On Behalf Of Jim Cicirello
Sent:   Monday, March 13, 2006 10:36 AM
To: Repeater-Builder@yahoogroups.com
Subject:RE: [Repeater-Builder] A couple of Micor questions..

Mike, If the low band PA's are the same wiring configuration as the
VHF Hi, there is a pin on the end of the Amp which must be grounded when you
transmit. Other than that, it is just 12+, Exciter in and RF out. As I
remember as you look at the component side of the amp, the pin is on the
left end. I don't remember any other exterior connections. 
Good Luck,  73
Jim KA2AJH  Wellsville, N.Y. 

_
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Mike Perryman
Sent: Monday, March 13, 2006 9:36 AM
To: [EMAIL PROTECTED] com
Subject: [Repeater-Builder] A couple of Micor questions..

First, thanks to all who responded to my requests for info regarding
interfacing the RC-210.  The repeater is on the air and functioning
reasonably well!

I do have another question though...  I have a cont.-duty PA (Micor
cont duty on 40MHz split) for it, and the interconnect board I have does not
have the header pins for interfacing it.  So it goes without saying I also
do not have the associated cabling.  Does anyone have info regarding how to
make the outboard PA play?  My question is, what gets tied to where with
regard to the interconnect board and the PA.
I couldn't find what I was looking for in my manual, as it is for an
intermittant-duty compa-station.  Actually I can't find much info in my
manual regarding this PA.  I did notice that it will have to be moved into
the correct band-split so there is still some work in my future...

Thanks again
 73
Mike Perryman
www.k5jmp.us





 
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<>

RE: [Repeater-Builder] A couple of Micor questions..

[Jim Cicirello]

Mike, If the low band PA's are the same wiring configuration as the VHF Hi,
there is a pin on the end of the Amp which must be grounded when you
transmit. Other than that, it is just 12+, Exciter in and RF out. As I
remember as you look at the component side of the amp, the pin is on the
left end. I don't remember any other exterior connections. 
Good Luck,  73
Jim KA2AJH  Wellsville, N.Y. 

_
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Mike Perryman
Sent: Monday, March 13, 2006 9:36 AM
To: [EMAIL PROTECTED] com
Subject: [Repeater-Builder] A couple of Micor questions..

First, thanks to all who responded to my requests for info regarding
interfacing the RC-210.  The repeater is on the air and functioning
reasonably well!

I do have another question though...  I have a cont.-duty PA (Micor cont
duty on 40MHz split) for it, and the interconnect board I have does not have
the header pins for interfacing it.  So it goes without saying I also do not
have the associated cabling.  Does anyone have info regarding how to make
the outboard PA play?  My question is, what gets tied to where with regard
to the interconnect board and the PA.
I couldn't find what I was looking for in my manual, as it is for an
intermittant-duty compa-station.  Actually I can't find much info in my
manual regarding this PA.  I did notice that it will have to be moved into
the correct band-split so there is still some work in my future...

Thanks again
 73
Mike Perryman
www.k5jmp.us





 
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<>

RE: [Repeater-Builder] lightning arrestors

[Jim Cicirello]

The going price for  Polyphasers are about $65.00 wholesale. They are
available with UHF and N Type Connectors. When I use my spare, I go to E-Bay
and start watching. I buy them for about $25.00 IN THE BOX. Make sure you
check the frequencies that you bid on. They come in different  frequency
ranges and power. Again I get them in the Box or take a sellers word that
they are new as I don't want one that has been zapped a number of times.
Good Luck!  73 JIM  KA2AJH  Wellsville, NY 

Jim KA2AJH  Wellsville, N.Y. 
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Kevin King
Sent: Thursday, March 02, 2006 10:00 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] lightning arrestors

Only rich people can afford low cost/budget lightning protection!

Kevin King SCSA BSCIS
ARS KC6OVD
GMRS KAG0378
EIEIO 2722
Acworth Georgia


-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] Behalf Of Stephen Rice
Sent: Thursday, March 02, 2006 9:51 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] lightning arrestors


Hi all, I had a question that I believe some of you can answer! I have 
a repeater with an antenna only about 20 feet off the ground here in 
Florida and am now looking for a budget lightning arrester. I have 
seen so many different ads I figured I would go to the horses mouth 
and ask you all if you have to do it on a budget what did you use? Did 
you mount the arrestor outside with an appropriate ground or inside? 
By the way the antenna is low because of the community regs. and it 
does cover the community for GMRS emergency work at that height. 
Thanks Steve N4YZA








 
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RE: [Repeater-Builder] Linking repeaters

[Jim Cicirello]

We have had a multiple repeater linking system for several years that has
worked flawlessly. The system is VHF (several VHF Repeaters) that is linked
together using a Hub Repeater. A friend Leon N2HLT, you can see his site on
the web by entering his call) has a UHF system that has about fifteen UHF
repeaters. You cannot tell the difference from one of his repeaters to the
other. In my case I have a 447X449 Hub Repeater. Each stand-alone repeater
has a simplex link that talks to the hub.
Picture the spokes of the wheel being the individual repeaters and the Hub
being the HUB REPEATER that ties them all together, you can see how seamless
this can be. My hub does NOT have a tail, as all the repeaters linked are
not mine. In the N2HLT system Leon owns all the repeaters so he sets each
individual repeater for no tail and has his Hub Repeater set with a tail,
thus all the repeaters come up and go down at the same time. It doesn't get
any better. Hope this helps.
73 JIM  KA2AJH  

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Ian
Sent: Monday, February 13, 2006 8:12 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Linking repeaters

Hi guys .I am interested to find out the better ways to link multiple 
repeaters together.At the moment i am using for each link  2 data 
radios back to back on a site between the sites but this is a slow way 
to link 3 or 4 sites together using one repeater site as the central 
site with all the others feeding through it.One option i am looking at 
is to install one data radio on each of the outer sites fitted with  tx 
and rx the central site .It works ok from the outer site i am testing 
to the central site but i am a bit concerned about from the central 
site back to the outer sites without it looping .any sugestions 







 
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[Repeater-Builder] How To Navigate Around the Repeater Builder Site???

[Jim Cicirello]

Laryn K8TVZ  wrote:
OK, time to ask.  I do not get anything as an attachment.  I view this 
list on the Web.  It seems like there is a reason, but I do not 
remember why these attachments are not stored.  Is there a way for me 
to get these attachments?

Here is the "How to" sheet on the Z matcher.
> John VE3AMZ
>  Z matcher info.pdf
Laryn you are not alone! I went to the website and could NOT find the 
Z Matcher info.pdf.
Is there a sheet somewhere that explains how to find these articles?
I am not ashamed to say there is a lot of information I ask for that 
is already posted if I had an idea of how or where to look.
HELP!  Thanks guys,   JIM  KA2AJH  











 
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RE: [Repeater-Builder] Z matcher info.pdf

[Jim Cicirello]

Mike,
Here is the information from Eric Lemmon WB6FLY that dates back to January
2004 as near as I can tell. The information for the device below is for
2-Meter and there was specs for 440 MHz. Hopefully Eric will join us with
the information. I have the 440 MHz matcher, but I don't remember the values
of the caps. The UHF has only one turn between the caps. The spacing between
the connectors is critical. I put the first unit in a larger box AND IT DID
NOT TUNE.

Here is what Eric wrote:  73 JIM  KA2AJH  Wellsville, NY



With some help from Bill Lieske of EMR, I now have the information about the
EMR #6450/Z VHF Impedance Matcher.

 

The unit comprises a simple pi network inside a 1" by 1" by 1.25"

shielded box, with a male N on one end and a female N on the other.  The
unit is symmetrical, so it makes no difference how it is connected.

 

A Johanson #5502 piston-type variable capacitor, 1 to 20 pF, is installed
right at each connector, with an air-wound coil between them. 

The coil is #18 bare copper wire, and is three turns having an inside
diameter of 3/16", spread out so that there is 1/16" of space between each
turn.  Although I've never had to do this, the coil can be squeezed or
stretched a bit if either or both capacitors run out of adjustment before a
match is achieved.  The specified capacitors are MIL-SPEC components, being
designated as #PC31J200 in MIL-C-14409.  The manufacturer's data sheet for
this capacitor can be found at:

<http://www.johansonmfg.com/avc/5500.htm>

 



 



-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Mike Pugh
Sent: Tuesday, January 24, 2006 5:04 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Z matcher info.pdf

I missed it, can you make the plans available, with or without the volt 
meter mod? Mike

Jim Cicirello wrote:

> A while back there was an excellent article on making these Z Matchers. 
> I made two, one VHF, One UHF, they worked well. The only parts were two 
> Piston Caps, One turn coil between the caps and it was put in an RF 
> tight box with two RF connectors of your choice. On the home made ones 
> there was no circuit for the voltmeter. Does anyone know how this 
> voltage is obtained from the Z Matcher? I would like to incorporate this 
> design so I can remove the Power Meter and make a final tune.
> 
>  
> 
> 73 JIM  KA2AJH
> 
>  
> 
> 
> 
> From: Repeater-Builder@yahoogroups.com 
> [mailto:[EMAIL PROTECTED] On Behalf Of John J. Riddell
> Sent: Tuesday, January 24, 2006 11:48 AM
> To: Repeater-Builder@yahoogroups.com
> Subject: [Repeater-Builder] Z matcher info.pdf
> 
>  
> 
> Here is the "How to" sheet on the Z matcher.
> 
>  
> 
> John VE3AMZ
> 
> 
>  Z matcher info.pdf
> 
> 
> 
> 
> 
> 
> 
> 
> YAHOO! GROUPS LINKS
> 
> *  Visit your group "Repeater-Builder
>   <http://groups.yahoo.com/group/Repeater-Builder>" on the web.
>
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> 
> 
> 
> 





 
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RE: [Repeater-Builder] Z matcher info.pdf

[Jim Cicirello]

A while back there was an excellent
article on making these Z Matchers. I made two, one VHF, One UHF, they worked
well. The only parts were two Piston Caps, One turn coil between the caps and
it was put in an RF tight box with two RF connectors of your choice. On the
home made ones there was no circuit for the voltmeter. Does anyone know how
this voltage is obtained from the Z Matcher? I would like to incorporate this
design so I can remove the Power Meter and make a final tune.

 

73 JIM  KA2AJH

 









From:
Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of John J. Riddell
Sent: Tuesday, January 24, 2006
11:48 AM
To:
Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Z
matcher info.pdf



 



Here is the "How to" sheet on the Z matcher.





 





John VE3AMZ




 Z matcher info.pdf 















  




  
  
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[Repeater-Builder] Higher Output Exciter

[Jim Cicirello]

Hello to Kevin and the group.
Still another amplifier question: In my case I have a great Micor 
Repeater and I have a need to increase the output of the exciter to 
either 3-5 watts or 5-10 watts to drive some commercial amplifiers 
that operate in that INPUT range. I am wondering what is the best 
way to get that kind of drive, from the existing 400-500 Mw Drive I 
have from the Micor Exciter.

Also has anyone had any experience with the PagePro Exciter by Sonix 
Tech. in CA? This is a synthesized 1.5 ppm Paging Exciter Model DPM-
150-SX. I have been told the output is adjustable up to about six 
watts. Any comments about using one of these for repeater use? They 
are VHF in the 150.XXX Paging Freq. and MAY program to the 2-meter 
band. 

As always thanks for sharing your experience and advice.

73 JIM  KA2AJH











 
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[Repeater-Builder] Tower Side Mount Verticle Antennas

[Jim Cicirello]

Is there a recommended distance from the leg of the tower that a   
2-meter or 440 MHz Antenna should be mounted? I am going to have a 
couple of Antenna Mounts welded up and I wondering if they should be a 
1/4 or 1/2 wave from the tower leg or possibly an odd multiple? TIA

73 JIM  KA2AJH   







 
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[Repeater-Builder] IFR 1200/A Service Monitor

[Jim Cicirello]

A question for someone who has working knowledge of the IFR 1200/A 
Service Monitor. Will this monitor act like a frequency counter and 
read frequencies off the air? I have been unable to find the answer.
Thanks in advance. JIM  KA2AJH









 
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RE: [Repeater-Builder] Small Signals

[Jim Cicirello]

If you go ahead with a cheap generator as suggested I would like to suggest
the following that worked for me for many years. 
When I was going to work on a RX I left the generator on to stabilize which
was usually all the time. I put a tee connector on the output of the
generator and hooked a cheap frequency counter to one side of the tee. I
would have to turn the generator up quite a little to get the counter to
show the frequency,(depends on how good your counter is) but I would zero
the frequency, then turn the generator down for .05 uV or whatever. I would
have to check the counter every few minutes, but it was worth it. It worked
quite well. Good Luck...JIM  KA2AJH

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Ralph Mowery
Sent: Wednesday, June 08, 2005 11:47 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Small Signals



--- Dave VanHorn <[EMAIL PROTECTED]> wrote:

> 
> Does anyone have a pointer to a low level signal
> source, VHF/UHF?
> 
> I don't have a service monitor, and I can't really
> justify one.
> I occasionally need to tune up a receiver.
> What I don't have, is a signal source at the 10uV
> and down level.
> 
> I've used HTs and attenuators, but the leakage
> through the cable 
> usually exceeds the attenuated signal.
> 
> I would like to have calibrated levels, at least to
> some degree.
> 
>
You may want to check out ebay for some of the older
generators.  Such as:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=97198&item=7521664395
&rd=1

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=97198&item=7521664395
&rd=1

YOu should not have to pay any more than $ 50 plus
shipping for them.

They are not stabel and will drift some but will hold
long enough to check the receivers.  They were toward
the top of the line when they came out.

Often they will show up at the hamfests.  I picked up
one like the first one at a hamfest for less than $ 50
and it does work well enough to set up theFM
equipment.  That is what they show in some of the old
Mastr ll books.




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RE: [Repeater-Builder] Listening

[Jim Cicirello]

How about a tape recorder with VOX on the receiver? I have done this with a
scanner, like the Bearcat with the recording option to where you can tell it
to record on receive so the tape does not run all the time. At quieter sites
where a weak front end on the receiver will survive, you can get away with a
scanner. At sites with a lot of RF, you may need a commercial receiver and a
VOX Circuit to your recorder. One optionGood luck JIM 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Dave VanHorn
Sent: Sunday, June 05, 2005 9:36 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Listening


Ok, I've been given several frequencies to listen to, prior to 
getting a pair assigned.

What troubles me is that my home setup is never going to hear what I 
would hear at the repeater site.
I could put the receiver at the repeater site, but then how would I 
know what it's doing?

Any ideas?





 
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[Repeater-Builder] IFR 1200A Operating Manual

[Jim Cicirello]

Hi Guys:
Can someone point me in the direction of where I might find a copy of 
the operating manual for the IFR 1200A Service Monitor? I have 
searched with no hits on the A model.
Thanks in advance.JIM  KA2AJH   







 
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[Repeater-Builder] Mastr II Repeater Converted for External Controller

[Jim Cicirello]

Hello to Kevin and the group:
I have a MASTR II UHF Repeater that I am making into a HUB for my 
repeater system to replace the existing hub which is a converted 
mobile. My Question: Becaause this is a repeater, is there anything 
special I should do to interface my NHRC/4? I intended to remove the 
GE Repeater Controller and Audio Board and wire the MASTR II as if it 
was a regular base. Any thooughts before I start pulling boards?
Thanks in advance...JIM  KA2AJH  Wellsville, NY 








 
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[Repeater-Builder] White Pages Search for Nick Heiniger

[Jim Cicirello]

I also E-Mailed him immediately after the post came out regarding the 
IFR Monitor and NO REPLY. I did a search and there is only one 
Nicholas or Nick Heiniger listed in the White Pages,if you search for 
the name only without an address you get the information listed below.

New Search Modify Search Printer-Friendly 

Heiniger, Nick 
811 Weeber St
Iowa City, IA 52246-5171
(319) 466-0770
 








 
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RE: [Repeater-Builder] Select CTCSS and CSQ on Micor Receivers

[Jim Cicirello]

Thanks Kevin for the information. You ran the CTCSS Line out for me, active
high, so all I have to do is install the reed and board in the Micor and
hook the line to the controller. As always, thanks to you and the group. 
73 JIM  KA2AJH  Wellsville, N.Y. 

-Original Message-
From: Kevin Custer [mailto:[EMAIL PROTECTED] 
Sent: Thursday, February 03, 2005 1:30 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Select CTCSS and CSQ on Micor Receivers


Jim Cicirello wrote:

>Hi Kevin:
>To answer your question:
>I am running a Cat-200 Controller.
>

Okay, It has separate inputs for COS and PL logic.

>The switch I was referring to is the PL Disable on the Motorola Card.
>

That switch likely does nothing in your case.  Since I converted your 
station to a repeater, I would have cut the PL logic line from the stock 
decoder to the Audio & Squelch module to isolate the COS and PL logic 
signals.  In this case, your Micor no longer operates stock, so the 
others that have replied with "stock" operation; that information 
doesn't pertain to you.  This was done as I knew your machine was going 
to be used as a ham repeater, and Reverse Burst wasn't available.  This 
mod is necessary to allow AND Squelch to be utilized by the controller.

Since you have a controller to manage the state of access, the PL 
Disable Switch (on the Station Control Module) (if working) would really 
only be controlling the local speaker.

>This is the repeater you converted for me and I am getting ready to put in
>the tone reed. It is my understanding that when I do that, it will go to
>CTCSS, until I switch the PL Disable off, then it will go to CSQ.
>

That would be the case if your station was "stock", but since Reverse 
Burst is usually not available in the ham circles, it had to be done 
differently.  My conversion for the Micor to an amateur repeater makes 
the station operate in carrier squelch all the time regardless of the 
setting of the PL Disable Switch.  Realize that when you run an outboard 
repeater controller that has both COS and PL inputs, those signals (from 
the Micor) need separated and run to the controller independently.  
Also, since the "controller" will be putting the repeater in and out of 
PL, the station no longer needs to have that function, and it is 
disabled to eliminate confusion.  Step 7 of the following page outlines 
that:
<http://www.repeater-builder.com/rbtip/station-a-s.html>

> I am looking for the best way to use both CTCSS and CSQ and control it
thru the Cat-200 with Tones.
>

Simple.  Hook the logic available from J2 pin 10 (active high) to the PL 
logic input on your controller.  Use the controller to set the access 
state of the repeater. 
The repeater will operate just like it does now, and the local speaker 
will be active without regard to the way any switches are set or if PL 
is being used or not.

Kevin Custer





 
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RE: [Repeater-Builder] Re: Found Answer to Micor CTCSS and CAS Question.

[Jim Cicirello]

Hi Skipp:
My repeater is the converted Base. I had the logic line, I was thinking I
had to make a circuit to switch between the CAS and CTCSS lines, I didn't
think about the controller CTCSS circuit which was there all the time. That
is why I like this list I can get pushed in the right direction. I have to
find the sub tone detector board, which I have in my junk boxes. Is there a
difference between the TX and RX boards? As I recall they look the same. I
haven't been to the tower to try fitting them yet. 

73 JIM  KA2AJH  


Thanks SKIPP  JIM  KA2AJH

 

-Original Message-
From: skipp025 [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, February 02, 2005 8:03 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Found Answer to Micor CTCSS and CAS
Question.



Hi Jim, 

After my last post, it came to me that some people are 
possibly using micor mobiles, which have a different 
pl function the way I did my last mobile. 

I also didn't ask if your amateur conversion used the 
original micor modules as some conversions remove most 
or all the back plane modules. The answer would be 
different depending on which conversion used. 

The micor sub tone detector lives on small daughter 
boards in the receiver section. I'm sure the valid 
tone decoded logic can be obtained on the back plane 
through/via the interconnect board (base repeater 
micor). 

This is the pl detect logic line you need to run to 
your controller. My mod takes the same line from 
the squelch gate module. The back plane mod can take 
it from the logic pin of the squelch gate module
position. 

good luck
cheers, 
skipp 

www.radiowrench.com/sonic 


> "Jim Cicirello" <[EMAIL PROTECTED]> wrote:
> 
> Thanks to Kevin, Jeff and Skipp for pointing me in the right 
> direction on hooking up the CTCSS on my MICOR so it would work CSQ 
> and CTCSS. I was trying to make things more difficult than they 
> needed to be. When Kevin asked about my controller, I went to the
CAT-
> 200 Manual and sure enough there is a dual input for both CAS and 
> CTCSS that can be turned on by tone. I just need to talk this 
> question out and get pushed in the right direction. Also I am sure 
> many can benefit from the excellent overview Jeff gave on the Micor 
> Squelch, which is now in my Manual. Thanks guys for all the help.
> 73 JIM  KA2AJH  Wellsville, N.Y.







 
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[Repeater-Builder] Found Answer to Micor CTCSS and CAS Question.

[Jim Cicirello]

Thanks to Kevin, Jeff and Skipp for pointing me in the right 
direction on hooking up the CTCSS on my MICOR so it would work CSQ 
and CTCSS. I was trying to make things more difficult than they 
needed to be. When Kevin asked about my controller, I went to the CAT-
200 Manual and sure enough there is a dual input for both CAS and 
CTCSS that can be turned on by tone. I just need to talk this 
question out and get pushed in the right direction. Also I am sure 
many can benefit from the excellent overview Jeff gave on the Micor 
Squelch, which is now in my Manual. Thanks guys for all the help.
73 JIM  KA2AJH  Wellsville, N.Y. 







 
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