Re: [Repeater-Builder] Wouxun Radio

[Larry K]

My family and I have been using them for some time.  They are kind of
wide on the frontend but we are in the country so no problem there.  If
you get one get the programming kit also as they are a real pain to
program from the keyboard and easy thru the software.

Larry WA0VUS

[Repeater-Builder] Re: TXRX Vari-NotchR coupling loops

[Andy K]

Jeff, I received some pics that have answered my question. I note that RFI 
quote different part no's for the high and low pass, I guess this is so the 
tuning is smoother, my prototype is working ok as both high/low pass in a 
Allgon 5" cavity @433 megs with 1.6 meg spacing.
As a matter of interest I have a 28-88-01, 900meg 3.6 spacing dup which i 
modded to 1297 Megs, by shortening the plungers, and changing the jumpers, this 
works fine at 6 Megs spacing
Cheers
Andy
G8VLL


--- In Repeater-Builder@yahoogroups.com, "Jeff DePolo"  wrote:
>
> > Has anyone got the dimensions of these for a 4" cavity for 
> > 450 ish, they are the ones with 2 BNC sockets and a capacitor...Thanks
> > 
> > Andy
> > 
> > G8VLL
> 
> I'll take one apart if nobody else responds.  I have both the "ham band"
> 28-66-02 duplexers (100 dB isolation, 0.6 dB loss, 5 MHz split) and also the
> same thing in 450-470 MHz (28-70-02) - I don't think the loops are different
> between the two, just harness cable lengths.  I think I also have a
> 28-70-09, which has slightly different loops which yield higher loss (1.2
> dB) but deeper notches and more mid-band rejection.
> 
>   --- Jeff WN3A
>

[Repeater-Builder] TXRX Vari-Notch® coupling loops

[Andy K]

Has anyone got the dimensions of these for a 4" cavity for 450 ish, they are 
the ones with 2 BNC sockets and a capacitor...Thanks

Andy

G8VLL

[Repeater-Builder] Alinco RS-4

[K Rajesh]

Hi all, Some days back, I posted a message asking for help to program an Alinco 
RS-4 repeater. I need the bin file dump of the 24C02 IC from either the RX or 
TX CPU board. If any one can send me that or BIN DUMP OF EEPROM OF ANY ALINCO 
CHANNELIZED PROGRAMMABLE RADIO. This will help me to get some idea.
 
Best regards and 73’s
 
Rajesh K
KC2KBY/VU3RGK
 

RE: [Repeater-Builder] HP8924C RF Analyzer scan

[R. K. Brumback]

I have the service manual and operations manual if you need it. They are
both pretty big files. 

Randy

W4CPT

 

 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of james a fosse
Sent: Friday, June 19, 2009 10:18 AM
To: Repeater-Builder@yahoogroups.com; hp8...@yahoogroups.com
Subject: [Repeater-Builder] HP8924C RF Analyzer scan

 






Hello,

I just received a HP8924C Monday. Wednesday, I was able to get the RF 
Analyzer to scan frequencies and lock onto the transmitter output. I changed

something and can no longer get the RF analyzer section to scan. It just 
stays at the frequency set in the "tune frequency" box. It does not matter 
whether the "tune mode" is set to auto or manual.

Can anyone help me find the setting that I changed and restore it?

regards,

jim fosse
KI6NJF



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20:02:00

[Repeater-Builder] Motorola C73RCB-3105BT

[k...@ymail.com]

I have found a C73RCB-3105BT.  It was once operated as a WJG Maritel repeater 
but now is set to:
 
TX 155.070
RX 153.995
Tone 123.0

It apears to me to be complete, it has the duplexer/filter (T1480a series)  a 
Squelch Gate, and Station control module.  

I would like to know what it is worth and am interested in selling it if anyone 
is interested.  I have contacted Tom McKee who has a website for WJG Maritel 
and will be sending him some pics for his web site.  

Any help would be appreciated, I have not anything with repeaters ('cept use 
them) but had the opportunity to buy this one and didn't want it going on a 
scrap pile.  

[Repeater-Builder] 2 meter noise help!

[Christopher K. Greenhalgh]

While not a true repeater, I hoping the gurus here can help me.
 
Station info can be seen here; http://www.n8wct.com/n8wct-4/
 
The noise is a subtle low-frequency "bacon crackling". It is apparent across
the whole 2 meter band. Every piece of (my) equipment has been replaced, or
substituted. We even bypassed the filter, turned everything off, and the
noise was still present, even on battery power. SWR is fine...the station
can be heard 90 miles away.
 
Even though the noise is subtle, the "pops" seem to be on frequency with the
packet tones, thus, the radio requires an S8 strong receive signal, before
the TNC can decode it!
 
We are pretty sure its environmental...perhaps one of the large roof fans,
a/c unit, or crap from the large adjacent electrical room...whatever it is,
we are guests on the building, and probably would get much sympathy/help
from the owners.
 
Here's where I need help...
 
1. Identifying the source. I have an o-scope, but frankly, don't know much
about how to use it. Is there some sort of antenna analyzer that would help
me with this? Any other comments or advice would be deeply appreciated.
 
2. Repair or eliminate source.
 
Or 3. If I cant repair or eliminate the source, is there a way to filter it
out?
 
This is really a great location, and I'm very eager to remedy the problem,
so if anybody has anything...anything at all, please share.
 
Thanks everyone.
 
73, Chris.
 
_
Chris Greenhalgh, N8WCT
 
www.n8wct.com  
 

Re: [Repeater-Builder] Decibel Products Antenna website

[Brian K. Gaskamp]

Well that seems sort of weird. I have never heard of that term being used in 
Amateur radio type equipment.

Brian
KA5BKG


  - Original Message - 
  From: Ray Brown 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Thursday, January 01, 2009 4:12 PM
  Subject: Re: [Repeater-Builder] Decibel Products Antenna website



  Generally, something that is tagged "For Export Only" means that, for 
whatever
reason, the device is not meant to be sold OR USED in the USA.

  I see this all the time on medical equipment. If they put it thru the 
FDA and
got approval, it can be sold and used in the USA. If they didn't, it's 
not. Period.


Ray, KB0STN



--- On Thu, 1/1/09, Brian K. Gaskamp  wrote:

      From: Brian K. Gaskamp 
  Subject: Re: [Repeater-Builder] Decibel Products Antenna website
  To: Repeater-Builder@yahoogroups.com
  Date: Thursday, January 1, 2009, 11:36 AM


  Ok guys here's another good question in realtion to the Decibal 
Products antenna.
  Why is it on one site I looked at to get a quote it says,

  "For Export Only"
   


   

Re: [Repeater-Builder] Decibel Products Antenna website

[Brian K. Gaskamp]

So what does For Export Only mean, they won't ship to a foreign country.
Sort of confused on that.


  - Original Message - 
  From: Chuck Kelsey 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Thursday, January 01, 2009 12:04 PM
  Subject: Re: [Repeater-Builder] Decibel Products Antenna website



  It's their policy  Maybe a distributorship agreement 

  Without asking them, one can only speculate.

  Chuck
  WB2EDV



- Original Message - 
From: Brian K. Gaskamp 
To: Repeater-Builder@yahoogroups.com 
Sent: Thursday, January 01, 2009 12:36 PM
Subject: Re: [Repeater-Builder] Decibel Products Antenna website


Ok guys here's another good question in realtion to the Decibal Products 
antenna.
Why is it on one site I looked at to get a quote it says,

"For Export Only"

Brian
KA5BKG
  - Original Message - 
  From: Chuck Kelsey 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Wednesday, December 31, 2008 10:10 PM
  Subject: Re: [Repeater-Builder] Decibel Products Antenna website



  Yes, the DB420's (in omni configuration) came with the top four pairs 
rotated 90-degrees from the bottom four. A DB-408 (in omni configuration) 
alternated the rotation for each element pair. It also shows this way in the 
photos in the catalog.

  Chuck
  WB2EDV
- Original Message - 
From: Mike Dietrich 
To: Repeater-Builder@yahoogroups.com 
Sent: Wednesday, December 31, 2008 10:37 PM
Subject: Re: [Repeater-Builder] Decibel Products Antenna website


On most of the ones I've seen, the model numbers were the same for both 
models.
All of the elements can be rotated 90 or so deg if you want, but these 
are ones that came form the factory that way. ?
Mike  KB5FLX



   

Re: [Repeater-Builder] Decibel Products Antenna website

[Brian K. Gaskamp]

Ok guys here's another good question in realtion to the Decibal Products 
antenna.
Why is it on one site I looked at to get a quote it says,

"For Export Only"

Brian
KA5BKG
  - Original Message - 
  From: Chuck Kelsey 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Wednesday, December 31, 2008 10:10 PM
  Subject: Re: [Repeater-Builder] Decibel Products Antenna website



  Yes, the DB420's (in omni configuration) came with the top four pairs rotated 
90-degrees from the bottom four. A DB-408 (in omni configuration) alternated 
the rotation for each element pair. It also shows this way in the photos in the 
catalog.

  Chuck
  WB2EDV
- Original Message - 
From: Mike Dietrich 
To: Repeater-Builder@yahoogroups.com 
Sent: Wednesday, December 31, 2008 10:37 PM
Subject: Re: [Repeater-Builder] Decibel Products Antenna website


On most of the ones I've seen, the model numbers were the same for both 
models.
All of the elements can be rotated 90 or so deg if you want, but these are 
ones that came form the factory that way. ?
Mike  KB5FLX


   

Re: [Repeater-Builder] Decibel Products Antenna website

[Brian K. Gaskamp]

Actually when I did a search on DB224 it took me to this site.

http://www.wiscointl.com/decibel/dipoles/index.htm

Thanks,
Brian
  - Original Message - 
  From: Kevin Custer 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Wednesday, December 31, 2008 4:50 PM
  Subject: Re: [Repeater-Builder] Decibel Products Antenna website


  Decibel (1/10 of a Bel, of course)

  DB was absorbed by RFS some time ago:
  http://www.rfsworld.com/

  Kevin Custer

  Brian K. Gaskamp wrote: 

Hello all, maybe I'm misspelling the name of the company but I can't seem to 
find the company who makes the Decibal Products type of antennas.

They are the antennas that have the folded diploes that are very popular on 
most amateur repeater sites.

I always thought they were called DB products antennas, but maybe not.

Can someone direct me to the correct site.

Thanks a bunch.

Brian
KA5BKG







Yahoo! Groups Links




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8:44 AM

  
   

Re: [Repeater-Builder] Decibal Products Antenna website

[Brian K. Gaskamp]

Thanks Tony, actually I'm looking for a UHF antenna, any suggestions from that 
company.


  - Original Message - 
  From: Tony Alviar (Home) 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Wednesday, December 31, 2008 4:41 PM
  Subject: RE: [Repeater-Builder] Decibal Products Antenna website


  Decibel Products got bought by Andrew Corp.
  Andrew got bought out by CommScope.

  www.andrew.com
  Also search for db224 that is probably the antenna you are referring to.

  Tony, KA3VOR


  -Original Message-
  From: Repeater-Builder@yahoogroups.com
  [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Brian K. Gaskamp
  Sent: Wednesday, December 31, 2008 5:35 PM
  To: Repeater-Builder@yahoogroups.com
  Subject: [Repeater-Builder] Decibal Products Antenna website

  Hello all, maybe I'm misspelling the name of the company but I can't seem to
  find the company who makes the Decibal Products type of antennas.

  They are the antennas that have the folded diploes that are very popular on
  most amateur repeater sites.

  I always thought they were called DB products antennas, but maybe not.

  Can someone direct me to the correct site.

  Thanks a bunch.

  Brian
  KA5BKG

  

  Yahoo! Groups Links



   

[Repeater-Builder] Decibal Products Antenna website

[Brian K. Gaskamp]

Hello all, maybe I'm misspelling the name of the company but I can't seem to 
find the company who makes the Decibal Products type of antennas.

They are the antennas that have the folded diploes that are very popular on 
most amateur repeater sites.

I always thought they were called DB products antennas, but maybe not.

Can someone direct me to the correct site.

Thanks a bunch.

Brian
KA5BKG







Yahoo! Groups Links

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[Repeater-Builder] Couple radio questions

[Christopher K. Greenhalgh]

Hello group.
 
Not specifically repeater questions, but thought this group might hold the
folks who have the answers...
 
I have a Motorola Spectra VHF High Power (110 watts) that I am converting
for packet use, as an APRS digi-peater.
 
It will be a high-profile machine...probably running around 30-40% TX duty
cycle...possibly more during certain times.
 
My first question is about cooling. It, along with a 35 amp power supply,
will be located in a gutted Motorola repeater cabinet, which has 4 large
ventilation grills on each door (2)...should I be concerned with
supplemental cooling?
 
And second, anybody have any information on how to go about adding an
S-meter to the Spectra?
 
73, and happy holidays.
 
_
Chris Greenhalgh, N8WCT
 
www.n8wct.com  
 

[Repeater-Builder] Need information for DATARADIO Models "MMUX" and "96+" modems

[K]

Need information for DATARADIO Models  "MMUX" and "96+" modems.  Any pinouts, 
specs etc would be great for these modems.  I believe these were used for 
police work where officers in the field could get Driver's license data.  I 
would like to use these in a Digital High Speed "Packet" network.  I know there 
has to be someone that could help me with these.  I appreciate it.

 Thank you
73
Kenny
KG5KS
DEC B AR



  

[Repeater-Builder] Need information for best radios to use for 9600 Baud and higher digital links

[K]

Would like to hear from those that have converted OR can suggest a radio either 
2m or 70cm that can do 9600 baud digital "Packet".
These will be put at remote hill tops to provide a backbone system for passing 
large volumes of data.  I appreciate your time and trouble.

 Thank you
73
Kenny
KG5KS
DEC B AR



  

Re: [Repeater-Builder] 2-in-one antenna for UHF repeater?

[K]

I found these on ebay, they might could be made to work for what you need.
http://cgi.ebay.com/Motorola-UHF-Mobile-Duplexer-430-470-Mhz-BNC-connector_W0QQitemZ220304146797QQcmdZViewItem?hash=item220304146797&_trkparms=39%3A1|66%3A2|65%3A10|240%3A1318&_trksid=p3286.c0.m14

 Thank you
73
Kenny
KG5KS
DEC B AR





From: jsn <[EMAIL PROTECTED]>
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, October 30, 2008 3:18:05 PM
Subject: Re: [Repeater-Builder] 2-in-one antenna for UHF repeater?


Ouch.  I wasn't aware that much separation was needed.  My application
is for short term use in portable situations, and a 120' tower is
completely out of the question.

I guess I'll continue to troll eBay for duplexers.  Thank you for the
reality check.

jsn

On Thu, Oct 30, 2008 at 3:01 PM, David Piche <[EMAIL PROTECTED] com> wrote:
> Well Depending on how much power you will be using, you are looking to need
> at least 120' of direct vertical separation between the antennas which the
> RX antenna needs to be on the top and the tx on the bottom, and even then,
> your still talking about 65 dB of isolation in the best of conditions at 5
> MHz separation. So quite frankly, no a good idea for everyday use.
>
>  _ _ __
> From: boozhoundlabs <[EMAIL PROTECTED] com>
> To: Repeater-Builder@ yahoogroups. com
> Sent: Thursday, October 30, 2008 3:09:48 PM
> Subject: [Repeater-Builder] 2-in-one antenna for UHF repeater?
>
> I am building an inexpensive UHF repeater. Rather than spend money on
> a duplexer, I am considering using 2 antennas. I have had good luck
> building small dipoles, and would like to build a collinear pair of
> vertical dipoles in a single PVC housing for send and receive.
>
> I am considering building the dipoles out of 1/2" copper with RG-58
> running inside, and the whole thing sealed inside PVC pipe.
>
> As for the actual configuration of the antenna, I am still
> brainstorming options, and would appreciate help and experience
> narrowing things down.
>
> What would be the best spacing for a pair of dipoles in this collinear
> configuration? I would like to minimize interaction between them, or
> perhaps even provide gain based on their interaction.
>
> Any ideas how to adapt a design like the one below to dual-antenna
> configuration:
> http://www.repeater -builder. com/antenna/ wa6svt.html
>
> Can the part of the antenna connected to the coax braid be shared
> between antennas, with one ungrounded quarter wave section for Rx and
> Tx above and below?
>
> It would also be neat to have the Rx antenna be of higher gain than
> the Tx antenna since this will likely be used primarily by handhelds.
> Any suggestions of ways to do this? I am considering extending the
> Rx dipole with several 1/2 wave center-to-braid sections of coax as in
> most gain-ful collinear antennas.
>
> Thanks,
> jsn
>
>
> 



  

[Repeater-Builder] where is best place to find enclosed rpt cabinet?

[K]

As I'm building my uhf repeater I will need a lockable cabinet for my 
equipment.  Wish I had those two cabinets back now..  Where can I find a 48 
INCH OR BIGGER repeater cabinet nowadays?  Doesn't have to be waterproof as it 
will be inside a building.  Any and all suggestions are appreciated.  I'm in NE 
part of Arkansas

 Thank you
73
Kenny
KG5KS
DEC B AR



  

[Repeater-Builder] Need tuning and specs for a Sinclair R-312CA UHF Duplexer

[K]

Need tuning and specs for a Sinclair R-312CA UHF Duplexer.

 Thank you
73
Kenny
KG5KS
DEC B AR



  

[Repeater-Builder] Need tuning and specs for a Motorola T1507A Band Pass Only UHF Duplexer

[K]

Need tuning and specs for a Motorola T1507A Band Pass Only UHF Duplexer.  Found 
some specs, but nothing yet on tuning them the right way.

 Thank you
73
Kenny
KG5KS
DEC B AR



  

Re: [Repeater-Builder] eBay security

[K]

Just forward the message to [EMAIL PROTECTED],com  and they will tell you if it 
is from them.

 Thank you
73
Kenny
KG5KS
DEC B AR

[Repeater-Builder] Uniden Force

[K]

I bought a couple of Uniden Force uhf repeaters without duplexers for a 
possible uhf repeater project.  Don't know much about them.  Wondering where I 
could find links to those that use these kind of equipment?  I appreciate it.

 Thank you
73
Kenny
KG5KS
DEC B AR


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

[Repeater-Builder] going rate for GE MASTER II MOBILES

[K]

Where and how much are 40 watt UHF with channel guard?  How about 110watt vhf?  
GE 20amp 30Amp rack mount supplies?  Any links or comments appreciated.

 Thank you
73
Kenny
KG5KS
DEC B AR



  

RE: [Repeater-Builder] Unknow Radio - Anyone can help?

[R. K. Brumback]

I have one of those also. It was given to me by someone that knew I did work
with radios. I remember seeing these back in the late 60's, or one very
similar to it. It had an "extend" feature on it. Mine is in the VHF band. It
would take a lot of CPR to get or keep them running I would think. Just
think of all those old old caps in there.

Randy W4CPT

 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Mike Morris WA6ILQ
Sent: Saturday, August 02, 2008 11:02 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Unknow Radio - Anyone can help?

 

At 07:16 AM 08/02/08, you wrote:
> > Can you post a photo or two of the interior ?
>
> I don't have it, but you can take a look at the schematics on
>http://www.msxpro. 
com/py2bbs/esquemateca.php
>
> It is the last schematic, the "Unitel Patrulheiro III"
>
> Greetz from Brazil
> Alexandre - PU1BZZ

In the "adjustes" file there are some interior photos.

As others have said, that radio is the USA model called
the "Mocom 70". It was preceded by the Motrac (hybrid
tube/transistor) and the Motran (all transistor) and followed
by the Micor.

Mike WA6ILQ

 

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6:59 PM

RE: RE: [Repeater-Builder] FW: Dayton and Parts you might need....

[R. K. Brumback]

For at least the last two or three years I have been to Dayton Fest, there
has been someone using a recording with what could be called “colorful
metaphors”. It has been on the talk-in channel which I usually need to use.
I have had to turn the radio off because of this language and having my
family in the vehicle. I would like to think someone is working on this. Has
the person responsible been caught? Does this happen only during the Fest?
Is there anyway a fellow ham can help catch this person? I will be glad to
supply a new rope and go in search of an appropriate tree!!

Randy B.

 

 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Ron Wright
Sent: Monday, April 21, 2008 9:14 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: RE: [Repeater-Builder] FW: Dayton and Parts you might need

 

One of the largest repeater systems in the US is just down the road on
145.190. However, will be more than busy during Dayton.

Last I heard 145.19 had over 32 rcv sites and 7 distant city repeaters
linked in.

73, ron, n9ee/r

>From: HYPERLINK "mailto:no6b%40no6b.com"[EMAIL PROTECTED]
>Date: 2008/04/20 Sun PM 11:29:43 CDT
>To: HYPERLINK
"mailto:Repeater-Builder%40yahoogroups.com"[EMAIL PROTECTED]
m
>Subject: RE: [Repeater-Builder] FW: Dayton and Parts you might need

> 
>At 4/20/2008 07:12, you wrote:
>
>>For others reading this list/thread, I am putting together an Excel 
>>spreadsheet of freqs that wil most likely be used at Dayton, so I can 
>>program them into my radios. Feel free to send along any freqs you will 
>>be using so I can add them in!
>>
>>
>>
>>Thanks,
>>
>>Mark N9WYS
>
>One of the most popular local systems is WF8M 443.775 (+) PL-131.8. Has 
>IRLP (node 4267), which makes it rather busy all hamvention weekend. The 
>system I'll be linking my portable repeater to in Miamisburg (WB8VSU 
>442.300 (+) PL-123.0) also has IRLP (node 4235) but doesn't cover Hara as 
>well so hasn't been very busy.
>
>Bob NO6B
>
> 

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

 


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4:34 PM



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Version: 7.5.524 / Virus Database: 269.23.8/1412 - Release Date: 5/2/2008
4:34 PM
 

[Repeater-Builder] DB-224 problem

[R. K. Brumback]

After a day of work putting together and putting up a DB224E in the 138-150
range I found the thing to be resonate at 150 MHZ center.  After a few
colorful metaphors, I find I turned one of the elements upside down with the
feed at the bottom. Would this be enough to throw the antenna off balance or
should I look for problems somewhere else also? I get a 2.0 SWR at 146.000.
I don’t mind a second trip up the tower to turn the element around (it’s the
lower element), but that third trip would do me in!

Randy B.

W4CPT


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AM
 

RE: [Repeater-Builder] Would anyone like to talk about SERA in KY? Off list...

[R. K. Brumback]

I have worked with them on my location and while things move slow they came
through for me. I was really in no hurry, but they were friendly anytime I
contacted them for information. I joined SERA but have never received the
news journal. I was wondering if they still print it. I personally wish we
had a group set up and may just do that as we all need to be in contact at
times. I will let you know if I do.

Randy 

W4CPT

 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of w4wsm
Sent: Monday, February 18, 2008 12:35 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Would anyone like to talk about SERA in KY? Off
list...

 

Just wanted to see if anyone in KY had any comments about SERA...We
don't seem to have any represention here in the western side of KY. 
What are other repeater owners doing? 

Email me or if you want reply here that's fine. I'm not putting SERA
down but would like to hear comments others have about them...

Ben
W4WSM
w4wsm at insightbb.com

 


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RE: [Repeater-Builder] Address book hijacked

[R. K. Brumback]

Karl,

Thanks for letting us know, and I apologize for being a little
blunt earlier. I will try to think before I leap next time. Stay in here
with us.

Randy B.

 

 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Karl E. Simonson -
KS9E
Sent: Sunday, February 03, 2008 3:27 AM
To: Karl E. Simonson
Subject: [Repeater-Builder] Address book hijacked

 

I sincerely apologize for the inconvenience / intrusion.  It has come to my
attention that my address book / contact list has been hijacked.  Please
disregard the solicitation / invitation email which you may have received.
Thank you.

 

--Karl

 


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RE: [Repeater-Builder] new repeater

[R. K. Brumback]

I hope you have a frequency already.if not, that is your first
pitfall. 2 meter frequencies are almost impossible to get in some parts. If
you have one this is the place to ask questions.
Randy

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
Sent: Friday, February 01, 2008 4:59 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] new repeater



Hi,
I am building a 2 meter repeater. Am leaning towards Motorola surplus. 
Mitrek probably. Any suggestions or short cuts around bad pitfalls I 
may be coming to? Sure would like to use good equipment and save some $ 
too. I have researched Mitrek repeaters some but would like more input. 
I am planning nothing fancy. Only the basics.
Thanks, Collin
__
More new features than ever. Check out the new AOL Mail ! - 
http://webmail.  aol.com


 

RE: [Repeater-Builder] Karl invites you to join Zorpia

[R. K. Brumback]

If I want to make friends around the world I will get on HF. This crap
doesn't belong here.
Randy
 
 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Karl
Sent: Saturday, February 02, 2008 9:50 PM
To: repeater-builder
Subject: [Repeater-Builder] Karl invites you to join Zorpia





  




  Zorpia.com - Photos & Journals 



Hi repeater-builder, 

You are special! Your friend Karl, invites you to be a part of Zorpia! 




  _  


So what is Zorpia? 

Zorpia is a Global Online Community, where you will make friends from around
the world, and share your experiences through Journals, Photos, Videos and
more. Like a virtual online country, when you join Zorpia, you are not just
a member, but a 'Zorpian'.

Be a part of a special, rapidly growing group of people from all corners of
the world.

Join Zorpia today, and make your mark by using our range of fully
customizable pre-configured skins on your homepage.



 
 Join now for free! 
Karl's profile photo:

 
 



This message was delivered with the Karl's initiation.
If you wish to discontinue receiving invitations from us, please click here:
Block

future notifications
Copyright(c) 2003-2007 Zorpia.com  . All Rights
Reserved.   

 

[Repeater-Builder] 10m FM Band plane (was: 10 meter desense help, split site, high noise floor)

[Mike - W5JR (f/k/a N5FL)]

The best odds of getting a Petition for Rule Making accepted for 
comment and then enacted is for all impacted parties to jointly 
submit a plan that has been hammered out and mutually agreed to.  You 
will have much better success when there is no "conflict" by the 
users versus a continuos petition.

Mike / W5JR / Milton GA (a "suburb" of Alpharetta) 

[Repeater-Builder] Re: 220 repeater antennas

[Mike - W5JR (f/k/a N5FL)]

The person Paul refers to built 2 of these antennas, from scratch, 
(originally called a DB-244 by Decibel Products) for our group in the 
early 80's.  The antennas are still in operation 1500' up the 
broadcast tower today, one used for RX and one used for TX - no 
duplexer.  Performance remains superb.


BTW, reflecting on a discussion about the Midland 13-509 radio for 
repeater operation, these antennas are connected to a split apart 
13-509, built at the same time as the antennas.  I know this is the 
kiss of death, but other than a run away crystal oven (it gets very 
cold at 1500' in an outdoor cabinet) the Midland repeater has had no 
failures after 25+ years of service.  We keep intending to modify a 
hi-band GE MVP, but as long as the Midland keeps working, the project 
is low on the to-do list.


I have one of the factory DB 220 antennas on the ground back in 
Texas, and will see it in a few weeks.  I can take the measurements 
(unless someone else in DFW wants to do it) and a few pictures.  If 
someone really really thinks they have to this one, I can be coaxed 
into selling it, local DFW pick-up only, I will not ship it.


Mike / W5JR / Milton GA (a "suburb" of Alpharetta)




Posted by: "Paul Finch" [EMAIL PROTECTED] 
wb5idm





Tue Dec 4, 2007 9:07 pm (PST)

I have a friend that has made his own 220 MHz version of the DB antenna, the
worst problem he had was getting the harness to seal. I told him about
Scotchkoat and he has not had a problem since. By the way, the Vapor Block
coax does not do much for me. If the coax is sealed correctly you will
never get water in it. All Vapor Block does is make it hard to work with,
it still lets water migrate to the lowest point in the coax which is usually
the Heliax connector.

The problem with my friend right now is he is 76 years old and his mind
seems to be going away. He was supposed to build me an antenna but has
forgotten about it. The two antennas (1 TX, 1 RX) on his 500 foot tower
have been up for about ten years with no problem.

Paul

RE: [Repeater-Builder] check it out... the rare GE radio is back on eBay

[R. K. Brumback]

How in the h**l was it removed working without cards a power amp and voltage
supply? He might as well sell it as a metal box.

Randy

 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Nate Duehr
Sent: Tuesday, November 13, 2007 12:53 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] check it out... the rare GE radio is back on
eBay

 

The rare GE "MASTR Eleven" has returned!

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150182394028"http://cgi.
ebay.-com/ws/eBayISAPI-.dll?ViewItem&-item=15018239402-8>

LOL!

--
Nate Duehr, WY0X
HYPERLINK "mailto:nate%40natetech.com"[EMAIL PROTECTED]

 


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RE: [Repeater-Builder] Daniel's repeater

[R. K. Brumback]

It sounds like Daniel's may not make the 100 amp but use a downstream
amplifier. That would be ok with us also.
Randy

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of CO004
Sent: Monday, October 29, 2007 6:41 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Daniel's repeater

In a not so long ago life I had a number of them to maintain around the 
State of Colorado, all at very high, remote, solar sites. They were 
extremely dependable and worked well in both analog and P25. At one site, 
lightning took out the solar controller two different times, but the Daniels

came right back up both times after the solar controller was replaced and 
the batteries charged up a bit.

Harry


On Oct 28, 2007, at 4:12 PM, R. K. Brumback wrote:

> Until a couple of days ago I never heard of a “Daniel’s” repeater. 





 
Yahoo! Groups Links



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Yahoo! Groups Links

<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

<*> Your email settings:
Individual Email | Traditional

<*> To change settings online go to:
http://groups.yahoo.com/group/Repeater-Builder/join
(Yahoo! ID required)

<*> To change settings via email:
mailto:[EMAIL PROTECTED] 
mailto:[EMAIL PROTECTED]

<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 

[Repeater-Builder] Daniel's repeater

[R. K. Brumback]

Until a couple of days ago I never heard of a “Daniel’s” repeater. I am
looking for a new VHF analog repeater and one of my friends mentioned Daniel
which is in Canada. Is anyone familiar with this company and their products?
No essays, but just looking for a short “Yes their great” or “Don’t even
think about them.

Many thanks in advance.

Randy

  


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RE: [Repeater-Builder] OT- Weather Radio Recall

[R. K. Brumback]

Quote: “for between $30 and $150.”

 

WOW!!  Consumer beware………huh

 

Randy

 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of tgundo2003
Sent: Thursday, August 30, 2007 9:30 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] OT- Weather Radio Recall

 

This is a bit off-topic, but I thought it would be important to get 
the word out as life safety is involved...

Tom
W9SRV

NEWS from CPSC
U.S. Consumer Product Safety Commission
Office of Information and Public Affairs 
Washington, DC 20207 

FOR IMMEDIATE RELEASE
August 29, 2007
Release #07-292 

Firm's Recall Hotline: (800) 203-4921
CPSC Recall Hotline: (800) 638-2772
CPSC Media Contact: (301) 504-7908

Weather Radios Recalled by Oregon Scientific Due to Failure to 
Receive National Weather Service Alerts

WASHINGTON, D.C. - The U.S. Consumer Product Safety Commission, in 
cooperation with the firm named below, today announced a voluntary 
recall of the following consumer product. Consumers should stop using 
recalled products immediately unless otherwise instructed. 

Name of Product: Oregon Scientific Weather Radios

Units: About 66,000

Manufacturer: Oregon Scientific Inc., of Tualatin, Ore.

Hazard: The radios could fail to receive National Weather Service 
alert signals in certain areas of the country. In the event of severe 
weather, this failure could put a consumer's life and property at 
risk.

Incidents/Injuries: None reported.

Description: This recall involves the following Weather Radios and 
Weather Stations:

NAME MODEL 
All Hazards Portable Weather Alert Radio WR103NX 
Portable Public Alert Radio WR108 
Public Alert Weather Station WRB308 
John Deere Public Alert Weather Station WRB308J 

No other models are included in this recall.

Sold at: Retail stores nationwide, including some electronics and 
sporting goods stores, online retailers and in catalogs from December 
2005 through June 2007 for between $30 and $150.

Manufactured in: China

Remedy: Consumers should not rely on the recalled weather radios to 
receive emergency information. Consumers should contact Oregon 
Scientific for instructions on returning the radio to receive a free 
replacement.

Consumer Contact: For additional information, contact Oregon 
Scientific at (800) 203-4921 between 8 a.m. and 5 p.m. PT Monday 
through Friday or visit the firm's Web site at 
www2.oregonscientif-ic.com

To see this recall on CPSC's web site, including pictures of the 
recalled products, please go to:
HYPERLINK
"http://www.cpsc.gov/cpscpub/prerel/prhtml07/07292.html"http://www.cpsc.-gov
/cpscpub/-prerel/prhtml07/-07292.html

 


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RE: RE: Re: Re: RE: [Repeater-Builder] Re: Duplexers

[R. K. Brumback]

Quote: “If there weren't resistors in there too, transmission lines would
have no loss.”

 

Yes, with a perfect Z, resistance would be the only math to do for loss. But
it is never perfect as even FM has a changing frequency and we use a broad
range of frequencies.  I have enjoyed this thread so much I am printing it
out and re-reading it to get more knowledge. I tip my hat and bow deeply in
your direction. 

Randy

W4CPT

 

Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Jeff DePolo
Sent: Wednesday, August 29, 2007 11:28 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: RE: Re: Re: RE: [Repeater-Builder] Re: Duplexers

 

> >There's a capacitor hidden in in my coax? Where? I can't 
> find it, and now
> >I've ruined my cable looking for it :-)
> >
> 
> Yep, whenever one has two conductors with spacing between 
> them you got a cap. For a cap in coax might try looking for 
> the conductors of center and shield...looks like 2 conductors 
> seperated to me, hi. Yep there are caps in that coax.

It was a joke...

> That is what makes a feedline...parralle-l caps and series 
> inductors. They determine the coax or any other feedline 
> characterist impedance.

You forgot the resistors that are in series with the inductors and caps (in
real-world transmission lines). If there weren't resistors in there too,
transmissions lines would have no loss.

--- Jeff

 


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RE: [Repeater-Builder] Re: Duplexers

[R. K. Brumback]

Quote: “In AC power lines little is paid attention to as for transmission
except for R losses and power factor.”

 

I can remember doing an experiment in college where we needed 60 HZ exactly
and would have to call the generation plant to see if they were running at
60 HZ. I never did think we could guarantee we had 60 HZ as the Z will
change somewhat with distance from the plant. That is why the power
companies put large capacitors in the line to bring it back in phase.

 

Quote: “Yes up the voltage/lower the current and the IR loss goes down.”

 

This brought back a laugh as I once ran 500 foot of extension cord to run a
circular saw. Wasn’t getting much done so I hooked it up to 220 volts
source. Had about 140 volts under load. You could saw till the blade turned
blue.

 

Randy B.

 

 

 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Ron Wright
Sent: Wednesday, August 29, 2007 10:32 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: Re: Re: Re: RE: [Repeater-Builder] Re: Duplexers

 

Ralph,

Transmission line theory for RF and AC power is totally different. In AC
power lines little is paid attention to as for transmission except for R
losses and power factor. Yes up the voltage/lower the current and the IR
loss goes down.

For RF this is totally different for the RF propergatesdown the line, not
just passes as voltage and currents. This is why feedlines have specific
impedances and loads used.

One can have any impedance of coax or twin feeds one wants...that is if you
have the material and space for it. One can get off the shelf 75 Ohm twin
lead. Using 50 or 75 Ohm has more to do with stability especially at RF.

IR drops in feedlines is much less than a factor than the LC/dielectric type
losses. Again frequency shows this. 100 W at 10 MHz and 1000 MHz will have
radically different losses yet both have the same I and V and R.

73, ron, n9ee/r

>From: Ralph Mowery mailto:ku4pt%40yahoo.com"[EMAIL PROTECTED]>
>Date: 2007/08/27 Mon AM 09:20:07 CDT
>To: HYPERLINK
"mailto:Repeater-Builder%40yahoogroups.com"[EMAIL PROTECTED]
m
>Subject: Re: Re: Re: RE: [Repeater-Builder] Re: Duplexers

> 
>
>--- Ron Wright mailto:mccrpt%40verizon.net"[EMAIL PROTECTED]>
wrote:
>
>> Jesse,
>> 
>> Then why do twin feeders have much less loss than
>> coax??? Skin affect is even more of a factor there
>> due to the differences in the area of the outer
>> shield in coax vs the twin feeders wire.
>> 
>> Maybe it is because of the larger C coupling in the
>> coax due to the larger surface area of the shield. 
>> Coax has a lower R even with skin effect than twin
>> line feeders.
>> 
>> Skin affect is a factor, but a small one compared to
>> the LC factor.
>> 
>> 73, ron, n9ee/r
>> 
>
>It is not open wire or coax that determins the power
>loss. It is the impedance of the line and the size of
>the conductors for frequencies up to 1000 Mhz or so.
>
>To transfer 1000 watts of power , the voltage will be
>higher and the current lower in most prectical open
>wire lines. That is because the impedance will be
>around 300 to 600 ohms. Coax is usually 50 or 70
>ohms. To get 1000 watts of power through that
>impedance line it requires less voltage and more
>current. 
>
>This is the principal of regular 60 hz power line
>transmission. Up the voltage to a few hundred
>thousand volts and the current will go down. This
>lowers the losses.
>
>I don't care to take time to do the calculations, but
>if you take some small guage wire (say # 20) and
>space it close to make about 200 ohms line and figuer
>the loss, it may be higher than some 1 inch or even
>1/2 inch hardline. 
>
>At frequencies below around 1000 Mhz the major loss is
>the IsqR loss in all lines. Radiation is a very small
>part. In coax there is a point in which the current
>on the shield is not flowing but jumping from point to
>point where the shield wires cross. This causes some
>resistance. That is partly why the foil shielded coax
>and hardline is lower in loss than regular coax. 
>
>___-_-_-_-_-_-__
>Be a better Heartthrob. Get better relationship answers from someone who
knows. Yahoo! Answers - Check it out. 
>HYPERLINK
"http://answers.yahoo.com/dir/?link=list&sid=396545433"http://answers.-yahoo
.com/-dir/?link=-list&sid=-396545433
> 

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

 


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RE: [Repeater-Builder] Duplexers

[R. K. Brumback]

Quote from Jesse: “When you are using a VSWR meter you are measuring
voltage, if you move the meter to a different spot on the cable, the voltage
is different, therefore it gives you a different reading.”

 

This now makes more sense to me as I once saw a feed line demonstration with
voltage and current sleds showing the difference at different points along
the line. At some places the voltage was null (as with any sine wave). I
don’t see how this could happen at the antenna port of a transmitter unless
it was microwave as the cabling from the tuner to the output connector is
not near ½ wave.  Also to Alan, I appreciate your sympathy for us “little
people” but I do find this very interesting. And as you can see, the experts
sometimes need a tune up.

Randy

W4CPT

 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Jesse Lloyd
Sent: Monday, August 27, 2007 12:48 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Duplexers

 

The length of coax doesn't effect impedance.  Trimming the coax effects what
is read on the VSWR meter because what is actually happening is that there
is an interference pattern created when you have a mismatch on the end of
feedline.  This pattern is sinusoidal and changes in voltage and current
along the line, in 1/2 wave periods.  You will find max voltage peaks and
min voltage peaks.  Also current will go up and down too.  When you are
using a VSWR meter you are measuring voltage, if you move the meter to a
different spot on the cable, the voltage is different, therefor it gives you
a different reading. 

Now if you put a voltage null at your transmitter, what would happen?
Normally with high SWR your transmitter will get hot because its dissipating
the reflected power into its heatsink.  If you put it at a voltage null, I
would suspect that the SWR would not get dissipated by the transmitter as
much as if you put it at a voltage peak.  The standing waves are still
there, there is still a mismatch, you will get the same power out, but its
just not going to hurt your transmitter as much because of the heat. 

The only time coax length makes a difference to power out is if your using
it in a matching stub, or a matching section ie. if you take 1/4 wave of 75
ohm cable put it on the end of 50 ohm cable you will get a match with a
112.5 ohm load.

You make an interesting point though, why does the cabling of duplexer's
need to be a certain length.  I would suspect that its because they are
looped and make an inductor. This then is part of the LC filtering, and
changing the length effects L.  But I could be wrong on that. 

Jesse

On 8/27/07, R. K. Brumback mailto:[EMAIL PROTECTED]"[EMAIL PROTECTED]> wrote:

I have heard this point argued for years. "Does trimming the coax affect the
SWR?"  If the length of coax has an affect on impedance, then how could it
not affect power out? We strive to maintain 50 ohms at the tail of all
devices to match the end load. GE puts matching networks in their Mastr
II's. I have taken a MFJ-259 and soldered a PL259 only at one end and then
started trimming the coax down and watched the impedance change
significantly with each cut. Duplexers come with precise lengths of cabling.
I have heard that trimming coax only fools the meter. Not being an engineer
with millions worth of equipment I can only make a SWAG (scientific wild ass
guess) as to whether coax length makes a difference in power out.

Randy

W4CPT

 

-Original Message-
From: HYPERLINK
"mailto:Repeater-Builder@yahoogroups.com"[EMAIL PROTECTED]
[mailto:HYPERLINK "mailto:Repeater-"; [EMAIL PROTECTED] HYPERLINK
"http://ups.com"; \nups.com] On Behalf Of Jeff DePolo
Sent: Saturday, August 25, 2007 12:30 AM
To: HYPERLINK
"mailto:Repeater-Builder@yahoogroups.com"[EMAIL PROTECTED]
Subject: RE: [Repeater-Builder] Duplexers

 

> When you put the Bird between the TX and the duplexer, you 
> have changed the
> length of the jumper cable, which upset the tuning. 

Adding a wattmeter or any other length of cable between the transmitter and
the duplexer Tx input port has no effect on the tuning of the duplexer. It
may change the load Z the transmitter sees, which may make the transmitter
happier (or sadder) depending on the resulting Z, but in no way does it
alter the tuning of the duplexer itself. 

Adding or removing cable lengths between the transmitter and duplexer also
does not change the VSWR as seen by the transmitter (minimal cable loss
effects notwithstanding)-. 

--- Jeff

-
Jeff DePolo - HYPERLINK "mailto:jd1%40broadsci.com"; [EMAIL PROTECTED]
Broadcast Sciences LLC, Valley Forge PA
v: 610.917.3000
f: 610.917.3030

 

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No

RE: [Repeater-Builder] Duplexers

[R. K. Brumback]

I have heard this point argued for years. “Does trimming the coax affect the
SWR?”  If the length of coax has an affect on impedance, then how could it
not affect power out? We strive to maintain 50 ohms at the tail of all
devices to match the end load. GE puts matching networks in their Mastr
II’s. I have taken a MFJ-259 and soldered a PL259 only at one end and then
started trimming the coax down and watched the impedance change
significantly with each cut. Duplexers come with precise lengths of cabling.
I have heard that trimming coax only fools the meter. Not being an engineer
with millions worth of equipment I can only make a SWAG (scientific wild ass
guess) as to whether coax length makes a difference in power out.

Randy

W4CPT

 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Jeff DePolo
Sent: Saturday, August 25, 2007 12:30 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Duplexers

 

> When you put the Bird between the TX and the duplexer, you 
> have changed the
> length of the jumper cable, which upset the tuning. 

Adding a wattmeter or any other length of cable between the transmitter and
the duplexer Tx input port has no effect on the tuning of the duplexer. It
may change the load Z the transmitter sees, which may make the transmitter
happier (or sadder) depending on the resulting Z, but in no way does it
alter the tuning of the duplexer itself. 

Adding or removing cable lengths between the transmitter and duplexer also
does not change the VSWR as seen by the transmitter (minimal cable loss
effects notwithstanding)-. 

--- Jeff

-
Jeff DePolo - HYPERLINK "mailto:jd1%40broadsci.com"[EMAIL PROTECTED]
Broadcast Sciences LLC, Valley Forge PA
v: 610.917.3000
f: 610.917.3030

 


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RE: [Repeater-Builder] Need An IFR Service Center

[R. K. Brumback]

 I have called Cardinal for some help in the past and the guy I talked to
was great. He went to the shop and took the cover off a monitor like mine
and told me what I needed to know. No charge! This type of service is hard
dang near impossible to find today.

Randy B.

 

 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of n9wys
Sent: Wednesday, August 01, 2007 9:43 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Need An IFR Service Center

 

Sorry for the fat fingers. What I meant to say was:
"...they have an excellent reputation here in the Midwest."

Mark - N9WYS

-Original Message-
From: HYPERLINK
"mailto:Repeater-Builder%40yahoogroups.com"[EMAIL PROTECTED]
m On Behalf Of n9wys

Paul, try here:

Cardinal Electronics, Inc. 
1631 N. Evergreen Ave.
Arlington Heights, IL 60004-3806
Phone: (847) 797-7820 

HYPERLINK "http://www.cardinalelec.com/"http://www.cardinal-elec.com/ 

I have no pecuniary interest in this company, but do know they have en
excellent reputation here it the Midwest.

Mark - N9WYS 

 


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Re: {Disarmed} Re: [Repeater-Builder] Your old work bench - shop pictures are on ebay!

[Marvin K. Hoffman]

Definitely.  There was a deck that plugged into the octal socket that 
with four xtals.  Found on xtmr and rcvt chassis as special order.

Marv, WA4NC

Jim wrote:

> I swear I saw a 4-channel chassis for a prog line! Scarce as hens teeth
> even back then!
>
> -- 
> Jim Barbour
> WD8CHL
>
> Mike Morris wrote:
> > You know you are getting old when you recognize that
> > stuff as past project radios...
> >
> > At 04:11 PM 07/31/07, you wrote:
> >> Your old work-bench and/or shop pictures on ebay!
> >>
> >> In case you didn't take any pictures of your bench or
> >> shop in years past... some of your equipment found
> >> its way onto ebay. :-)
> >>
> >> LOT OF TUBE GENERAL ELECTRIC & MOTOROLA PARTS
> >> Ebay Item number: 140143649238
>
>  

RE: [Repeater-Builder] Your old work bench - shop pictures are on eBay!

[R. K. Brumback]

WOW!! A couple of those rigs were probably on the Mayflower. I mean, Chris
had to have a radio. Nobody would be foolish to go exploring without one.
The space shuttle has tons of radios.

Randy

 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of skipp025
Sent: Tuesday, July 31, 2007 7:12 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Your old work bench - shop pictures are on ebay!

 

Your old work-bench and/or shop pictures on ebay! 

In case you didn't take any pictures of your bench or 
shop in years past... some of your equipment found 
its way onto ebay. :-) 

LOT OF TUBE GENERAL ELECTRIC & MOTOROLA PARTS
Ebay Item number: 140143649238 

enjoy... 
s. 

 


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RE: [Repeater-Builder] GE 100 watt PA final transistors

[R. K. Brumback]

Scott,
>From an amateur approach this is how I would describe it. I am just now
learning about Mastr IIs. The PA appears to be in 3 stages and can be
separated physically into 3 different boards. The first board has 2
transistors (4340P1 & 4340P2). The first board appears to drive the second
board which has one power transistor (4304P4). At the end of the second
board I can get 50 watts output power so I figured everything was good to
there. The 3rd board has two power transistors that appear to be in
parallel. From there it goes into what appears to be a matching network and
then on out to coax. The number on the board is PL19D424266G1 Rev B. From
what I understand about any 110 watt board will interchange even is the
configuration is different. Contact me personally at this email if you wish
and many thanks. [EMAIL PROTECTED]
Randy
W4CPT


-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Scott Zimmerman
Sent: Monday, July 23, 2007 3:31 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] GE 100 watt PA final transistors

Randy,

Since you have been struggling with this for a while now, tell me what style

VHF PA you currently have (the 3 or 4 transistor final) and I can sell you a

complete VHF 110W PA known working for MUCH, MUCH cheaper than that. Then 
all you have to do is some transplanting.

Scott

Scott Zimmerman
Amateur Radio Call N3XCC
612 Barnett Rd
Boswell, PA 15531

- Original Message - 
From: "R. K. Brumback" <[EMAIL PROTECTED]>
To: 
Sent: Monday, July 23, 2007 2:38 PM
Subject: [Repeater-Builder] GE 100 watt PA final transistors


>
> I just got a quote back from Digitron Electronics on the MRF-247 final
> transistors for the VHF Mastr II. They want $80.00 EACH!!  OUCH  I
> nearly crapped in the chair. They had about 5,000 of them and I would say
> that is the reason they have so many.
> Randy
> KI4BQN
>
>
>
> No virus found in this outgoing message.
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> 7:02 PM
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
> -- 
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> Version: 7.5.476 / Virus Database: 269.10.14/912 - Release Date: 7/22/2007

> 7:02 PM
>
> 





 
Yahoo! Groups Links




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[Repeater-Builder] GE 100 watt PA final transistors

[R. K. Brumback]

I just got a quote back from Digitron Electronics on the MRF-247 final
transistors for the VHF Mastr II. They want $80.00 EACH!!  OUCH  I
nearly crapped in the chair. They had about 5,000 of them and I would say
that is the reason they have so many.
Randy
KI4BQN



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[Repeater-Builder] Re: Icom IC-3at as a remote

[Mike - W5JR (f/k/a N5FL)]

Robert, if you are using the external mic connector to key the radio, 
you will have to "key" the mic line by using a resistor to ground 
versus directly to ground.  The radio goes into TX mode when current 
is pulled through the mic line.  If you are paralleling the internal 
PTT switch, this does not apply.  You can search for one of the sites 
with the old ACC controller info, and there is an appnote on hooking 
the 2-, 3-, and 4- radios to their units that shows PTT and mic audio 
connections.  ACC used the FC-1 board to interface the controller 
logic to the radio.


Mike - w5jr - via arrl.net - Milton, GA 

[Repeater-Builder] Re:23cm repeaters

[Mike - W5JR (f/k/a N5FL)]

I've got some conversion info for GE 800 MHz Exec II / MVP equipment 
to put them on 1.2 GHz.  It is easiest to use 2 units, but the 
conversion does detail how to add a second LO for the RX using a 
DownEast Microwave LO board.  I've not performed this modification 
myself, so no idea how well it works but seems straight forward.


Let me know where I can send the .doc file.



Posted by: "James Adkins" [EMAIL PROTECTED] 
kb0nhx





Thu Jun 28, 2007 6:36 am (PST)

Anyone have any good recommendations for 23cm repeaters besides D-Star?
I've read about the Icom RP-1200 and using two TM-541s. Are there other
options that are as good or better?

Thanks,

--
James


Mike - w5jr - via arrl.net - Milton, GA 

[Repeater-Builder] Re: bag phone for repeater 911

[Mike - W5JR (f/k/a N5FL)]

For the Canadian crowd, Rogers has formally announced they are 
discontinuing analog and TDMA service effective May 31, 2007 - NEXT 
WEEK.  They put out their first notice about 6 months ago.  Canada 
does not have a "must provide" clause for analog service.

As mentioned earlier, in the US, FCC rules require cellular carriers 
(those operating on either of the 850 MHz spectrum blocks) to 
maintain analog service at least until Feb 18, 2008.  After that 
date, providing analog service will be optional.  Nearly all 850 MHz 
service providers have expressed (in various FCC dockets on the 
subject) their intention to discontinue analog (and any remaining 
TDMA) service on or shortly after that date.

TDMA (or CDMA) is not a mandated technology and thus several service 
providers have begun discontinuing TDMA service ahead of the analog 
sunset date.

As others have said, once it is gone, it's gone.  The Moto 8000 
sitting on my desk will soon be a real paperweight.

There are close to 300,000,000 (300 Million) wireless subscribers in 
the US today.  AT&T (Cingular), Verizon Wireless, Altell, US Cellular 
and Dobson account for over 90% of current analog branded customers, 
and between them, there was less than 1 million left on analog as of 
the Feb 2007 reports - and declining rapidly.

[Repeater-Builder] Re: Johnson PPL 6060 manual needed

[Mike - W5JR (f/k/a N5FL)]

Posted by: "JOHN MACKEY" [EMAIL PROTECTED] 
jmackey_usa_net





Wed Feb 21, 2007 8:26 pm (PST)



are you saying a 45-470 MHz PPL6060 will work in the 420 MHz range?


Absolutely!!  I've moved many an EFJ to 420 operation - 558, 559, 
6060.  And some of them began life as T-Band units, 470-512 MHz.  In 
the RX, use high side injection xtals.  Matter of fact, use your 
existing 440 or 450 xtals to test with.  The radio will hear a 
signal -21.4 MHz lower than your current freq.  You may have to add 
a 1/4 turn to each coil in the multiplier helical.  In the front 
end, use a 1/4 turn for 427-433 range and a half turn for the low 
end.  We used regular house wire, 10 ga I think for the 558/559 
units, formed around the proper sized drill bit.  Tack solder it to 
the end of the existing coils.  They tune right up.  Sometimes, 1/4 
inch longer screws is all it takes.  If they are T-Band, use more coil.


On the TX, some padding in parallel with caps in the multipliers is 
needed to bring them in range, especially if TX'ing low.  It is easy 
to get a doubler acting like a tripler, so be sure to have a 
spectrum analyzer on hand to verify what freq the RF is on.  Same is 
true for the amplifier stages.  Two of the helicals in the 6060 
casting are for TX and may need the coil extension trick like the RX 
side.  They make good 420 full duplex link radios, similar to a modified MVP.


- mike - w5jr

[Repeater-Builder] Re: Johnson PPL 6060 manual needed

[Mike - W5JR (f/k/a N5FL)]

I've run one of those as a repeater for about 25 years now.  It saw 
service in a very active linked repeater network for the first 10 of 
those years.  I've moved it down to the 420 range for a link, and now 
back up into the 440 repeater segment.  The units will exhibit 
desense unless the driver and PA sections are tuned very 
carefully.  After tuning, if the power control pot is adjusted, a 
touch-up of the driver/pa is required.  You can also impact the 
performance by careful adjustment of the RX front end coils while the 
transmitter is keyed.  I turned another one into a full duplex base station.


- mike / w5jr 

RE: {SPAMFILTER} [Repeater-Builder] Need Help identify boards on UHF Mitrek

[R. K. Brumback]

I didn’t provide enough information to you.  The 4012 is the TOT board and
yes the 4181 is the tone encoder.

Randy B.

 

 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of ai4sb
Sent: Thursday, November 23, 2006 7:38 PM
To: Repeater-Builder@yahoogroups.com
Subject: {SPAMFILTER} [Repeater-Builder] Need Help identify boards on UHF
Mitrek

 

Hello thanks for reading

ok, I got 2 boards I need to identify..

one is a HLN4181 *(is this the pl.tone board)

2nd is a HLN4012 A2 (what is this one)

73

thanks

Miguel, ai4sb

 


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RE: {SPAMFILTER} [Repeater-Builder] Need Help identify boards on UHF Mitrek

[R. K. Brumback]

There is a good article in the files section here on the HLN4181 board.

Randy B.

 

 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of ai4sb
Sent: Thursday, November 23, 2006 7:38 PM
To: Repeater-Builder@yahoogroups.com
Subject: {SPAMFILTER} [Repeater-Builder] Need Help identify boards on UHF
Mitrek

 

Hello thanks for reading

ok, I got 2 boards I need to identify..

one is a HLN4181 *(is this the pl.tone board)

2nd is a HLN4012 A2 (what is this one)

73

thanks

Miguel, ai4sb

 


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RE: {SPAMFILTER} [Repeater-Builder] Need Help identify boards on UHF Mitrek

[R. K. Brumback]

I believe that is the Time Out Timer or TOT as it is normally called. Used
in some of the Mitrex radios.

Randy B.

 

 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of ai4sb
Sent: Thursday, November 23, 2006 7:38 PM
To: Repeater-Builder@yahoogroups.com
Subject: {SPAMFILTER} [Repeater-Builder] Need Help identify boards on UHF
Mitrek

 

Hello thanks for reading

ok, I got 2 boards I need to identify..

one is a HLN4181 *(is this the pl.tone board)

2nd is a HLN4012 A2 (what is this one)

73

thanks

Miguel, ai4sb

 


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[Repeater-Builder] Paul Holm message virus

[R. K. Brumback]

 

 

Got a message
on here from Paul Holm that had a virus. Might want to not open it if you haven’t
already.

Randy B.

 


















  




  
  
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RE: [Repeater-Builder] Re: Multimeter for $2.99

[R. K. Brumback]

I checked the site and they wanted $7.16 for the meter. I agree that having
a sacrificial meter around is good. I have been left holding just a pair of
leads before while watching the smoke gently rise proving that hot air is
lighter than cold air. 
Randy B.


-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Paul Finch
Sent: Wednesday, December 28, 2005 9:02 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: Multimeter for $2.99

Coy,

I have a Simpson 260 in the back seat of my truck I service radios out of,
had it for about 12 years now with no problems but also carry a high dollar
digital meter for precision work.  I have also tuned many radios with a
Fluke (or similar meter) but you have to remember some on this message board
have never tuned a radio before and they are just learning radio work.  You
have to admit that the analog is better for beginners.  I use Triplett's
630's as well as a digital on my shop bench.  The 630's are Dinosaurs but
still work well and with the meter/voltage doubler turned on I would put it
up against the digital for tuning accuracy.  Like you said, it's slower
using a digital.

Also, in 99.9% of the cases there is no reason to worry about 1/10 of a volt
in tuning front ends or exciters, the circuits are by design broader than
that.  There is a part of the old Johnson LTR Trunk systems that have to be
set within a 1/10 of a volt but it not in any of the RF circuits.

One other thing I carry the Analog for is backup, it is very frustrating
when you get to a job site and find the battery in the digital meter is dead
and the spare battery is also dead or missing.

Agree to disagree,

Paul


-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] Behalf Of Coy Hilton
Sent: Tuesday, December 27, 2005 11:35 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Multimeter for $2.99


I can get the last tenth of a milivolt out of a MASTR II receiver
with a my Fluke can you say that for the Simpson 260? Plus, you have
to treat the Simpson like egg shells. DOnt get me wrong I used a
Simpson for many years until I got used to using a FLUKE DVM for
tuning. You have to go slowly during tuning but it pays off.
AC0Y




--- In Repeater-Builder@yahoogroups.com, "Paul Finch"
<[EMAIL PROTECTED]> wrote:
>
> Hello,
>
> Some of the Fluke's have a bar graph that gives a sort of analog
reading to
> be able to tune a radio.  You can use a purely digital meter but
it's much
> easier with a good analog readout like a Triplett 630 NA or
Simpson 260.
>
> Paul
>
>   -Original Message-
>   From: Repeater-Builder@yahoogroups.com
> [mailto:[EMAIL PROTECTED] Behalf Of DCFluX
>   Sent: Tuesday, December 27, 2005 10:06 PM
>   To: Repeater-Builder@yahoogroups.com
>   Subject: Re: [Repeater-Builder] Multimeter for $2.99
>
>
>   I disagree,  I have had many repeater partys with my Fluke 87
and it has
> always come through.
>
>
>   On 12/27/05, Neil McKie < [EMAIL PROTECTED]> wrote:
>
>   In my personal opinion, a digital meter is worthless for
tuning -
> anything.
>
>   Neil McKie - WA6KLA
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> ---
-
> --
>   YAHOO! GROUPS LINKS
>
> a..  Visit your group "Repeater-Builder" on the web.
>
> b..  To unsubscribe from this group, send an email to:
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>
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of
> Service.
>
>
> ---
-
> --
>









Yahoo! Groups Links













 
Yahoo! Groups Links



 


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RE: [Repeater-Builder] tome codes

[R. K. Brumback]

I think different manufacturers use
different codes for different channels. Here is a site that might help.

http://www.gmrsweb.com/codetable.html

Randy B.

 

 

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On
Behalf Of Maire-Radios
Sent: Saturday, December 24, 2005
3:23 PM
To:
Repeater-Builder@yahoogroups.com
Cc: [EMAIL PROTECTED]
Subject: [Repeater-Builder] tome
codes

 



does anyone have the list of tome codes that are in most family
radio's?





 





thank you and have a Merry Christmas





 





john





 



















  




  
  
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[Repeater-Builder] Cushman CE-50 (Sorry for being off topic)

[R. K. Brumback]

I know is a little off the path but I really need some help
with a Cushman CE-50. When the green signal light on the right hand side would
not work, I found the two wires, a light green and a white with green stripe, had
been cut and left hanging. Also a yellow wire from the deviation switch common
post and another yellow wire and a green wire that went on inside the innards
somewhere. Not having a service manual or schematic I don’t know what
they went to or if a part has been removed. The monitor does not have the spectrum
analyzer option.

Randy B. 

















  




  
  
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RE: [Repeater-Builder] GE suitcase programmer TQ2310

[R. K. Brumback]

Jim,

    Thanks. I need to get back to
work on the suitcase so I will definitely try your suggestion.

Randy

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On
Behalf Of Jim Knox
Sent: Thursday,
 August 25, 2005 8:05 PM
To:
Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] GE
suitcase programmer TQ2310

 



Sorry for taking 2 month to reply, I have been busy...
move the eprom to another spot, the bottom board will work the best, if it
still dose not work, e-mail me at [EMAIL PROTECTED]
I can give you a new eprom...   JK

"R. K.
Brumback" <[EMAIL PROTECTED]> wrote: 

I purchased a GE suitcase programmer
to use with Phoenix, Delta, and Ranger mobiles. It has a Panasonic handheld
computer, I/O module with 6 slide in contact slots, a printer, EPROM and serial
board, and a plug in memory module that holds the specific radio programming
information. The memory module has about eight or nine open dual-in-line-pin
sockets where the burned program chips may be plugged. 

The computer appears to be ok, but
will not report the program storage module as a peripheral. It will report the
printer, the EPROM burner pads and the ram of the computer. The program storage
module has one program installed for the Phoenix. I have tried cleaning the
contacts, placing the module in a different location, and staying at a Holiday
Inn Express, but nothing so far. I suppose it is something in one of the chips.


Is anyone out there familiar with
this module, know of any problems in the past with it, or know a good place to
start checking?  Thanks for any assistance.

Randy B.

 









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[Repeater-Builder] Using 2 GE Rangers for repeater

[R. K. Brumback]

Does anyone have the step by step on hooking up two rangers
for repeater use? Also, can you recommend a controller! I am also looking for
the service manual for the VHF and the UHF version.

Randy

 

















  




  
  
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[Repeater-Builder] Cushman CE-50A

[R. K. Brumback]

I need a manual for the Cushman CE-50A. A good photo-copy
would be fine as long as it sings the song. Thanks.

[EMAIL PROTECTED]

















  




  
  
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Re: [Repeater-Builder] Repeater heard on Aviation Channel! HELP

[Marvin K. Hoffman]

Is heat an issue?  

I recall once when I lived in the Piedmont of NC that a large
university hospital's paging transmitter would go wild with spurs in
the summer but only when someone closed the equipment room door and
upset the ventilation.  

When overheated, it would throw out spurs heard fifteen miles away on
about 20 different repeater systems.  When cooled off, it was clean on
the Spectrum Analyzer.

Marv Hoffman, WA4NC
Boone, NC

Mathew Quaife wrote:

  Best bring the biggest hammer that you have.  It's back at it. 
There has got to be something near here that is mixing.  All morning it
has been clean and now it's back to it's old tricks.  
   
  Mathew
  
  
  Dave VanHorn <[EMAIL PROTECTED]> wrote:
  At
01:38 PM 7/8/2005, Mike/k1eg wrote:
Mathew you clearly have an interesting problem and I believe
we are all waiting to see what is causing your problem.  I'm sure that
Dave will be able to help you solve this.
   

I hope so!  I'll try to bring a big enough hammer anyway :)






  
   
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RE: [Repeater-Builder] GE suitcase programmer TQ2310

[R. K. Brumback]

Tedd,   
All IC's are in place and soldered as you mentioned. All appears to
be as factory and I cannot see anything that looks like it has been monkeyed
with.
I hope to be able to take a closer look at it tomorrow and maybe check some
voltage points, connections, wires and such.
Randy B.


-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Tedd Doda
Sent: Wednesday, June 08, 2005 4:31 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] GE suitcase programmer TQ2310

On Tue, 7 Jun 2005 12:25:15 -0400, R. K. Brumback wrote:

Randy:

>No, all the other support chips are not
>installed. It only has the Phoenix chip.

By support chips, I mean the "other IC's" within 
the module itself. Along with the personality
EPROM's, there are 14 or 15 other IC, mostly on
the first board (the one with the edge connector).

Make sure that they are all in place. I haven't
had mine apart in years, but they should all be
soldered in, as in NOT socketed.

>I will have to try and get a burned
>copy for the Delta and Rangers. I am trying 
>to get as much information as I can before 
>I set it down on the bench.

Do you know of anyone close to you with a 2310
that would let you try your storage module in their
machine? There might be nothing wrong with it?

First thing to get is the COMPLETE operators manual
for the 2310. This give you the breakdown of all
the modules. Without the manual, making repairs is
difficult at best.



Tedd Doda, VE3TJD

Lazer Audio and Electronics
Baden, Ontario, Canada





 
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RE: [Repeater-Builder] GE suitcase programmer TQ2310

[R. K. Brumback]

Hi Tedd and thanks for your reply. No, all the other support chips are not
installed. It only has the Phoenix chip. I will have to try and get a burned
copy for the Delta and Rangers. I am trying to get as much information as I
can before I set it down on the bench.
Randy 

Hi Randy:

First thing to check is the ribbon cables joining the
three boards together. I bought a 2310 as a spare a couple
years ago, and found more than half of the wires were
broken. These modules are designed to be taken apart for
eprom swapping but due to their age, the wires "work harden"
then break.

Are all the other "support" chips installed?



Tedd Doda, VE3TJD

Lazer Audio and Electronics
Baden, Ontario, Canada





 
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RE: [Repeater-Builder] GE suitcase programmer TQ2310

[R. K. Brumback]

“You need to go in the setup  program on the panasonic
computer and turn on port for the memory location. Its in the book on how to do
it. “  




If you are referring to pressing the “I/O”
button and then turning the port on by pressing the appropriate key for the
module, I have tried that. It shows:

1.  
printer out, on, slot 2

2.   
radio i/o in, on, slot 3

3.   
radio i/o out, on, slot 3

4.   
int ram, 7106

 

The program storage
module is slot 5 and it is not listed as an option to turn on. I have tried the
module in other slots and it is not recognized anywhere.

Randy






















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[Repeater-Builder] GE suitcase programmer TQ2310

[R. K. Brumback]

I purchased a GE suitcase programmer to use with Phoenix, Delta, and
Ranger mobiles. It has a Panasonic handheld computer, I/O module with 6 slide
in contact slots, a printer, EPROM and serial board, and a plug in memory
module that holds the specific radio programming information. The memory module
has about eight or nine open dual-in-line-pin sockets where the burned program
chips may be plugged. 

The computer appears to be ok, but will not report the
program storage module as a peripheral. It will report the printer, the EPROM
burner pads and the ram of the computer. The program storage module has one
program installed for the Phoenix. I have tried
cleaning the contacts, placing the module in a different location, and staying
at a Holiday Inn Express, but nothing so far. I suppose it is something in one
of the chips. 

Is anyone out there familiar with this module, know of any
problems in the past with it, or know a good place to start checking?  Thanks
for any assistance.

Randy B.

 

















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Re: [Repeater-Builder] Philips BFQ-43S

[K. Venkataramanan]

Hi
BFQ43(S) listed as Si - N Transistor VHFOutput stagess  36V 1.25A
Power Output =4W(175 MHZ)  equivalent 2N6255 with the same
ratings.
Does this info help?
Venkat  VU2KV
At 08:26 AM 22/05/2005, you wrote:
Hello all Normally I can find
things on the WWW, But I have had No
luck in finding a Data Sheet for the Following Transistor 

Philips BFQ-43S    If anyone has
the Info Please E-mail Me direct
 
[EMAIL PROTECTED]
Thanks Don KA9QJG 



 
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RE : Re: [Repeater-Builder] Poor Repeater RX

[Kevin K. Custer]

>--- Original Message --->From: Eric Lemmon[mailto:[EMAIL PROTECTED]>Sent: 5/21/2005 4:05:15 PM>To  : Repeater-Builder@yahoogroups.com>Cc  : >Subject : RE : Re: [Repeater-Builder] Poor Repeater RX> >Alexander,>>The>Sinclair Q-202G duplexer can barely make 85 dB when tuned on a network>analyzer, so that's the major part of your desense problem.  It's only a>four-cavity duplexer, specified at 80 dB minimum isolation, so no amount>of tuning is going to make it operate at an isolation above its design>limit.

While I don't disagree with what has been written, please realize that
*most* commercial manufacturers 'rate' their highband/2M duplexer at
500 kiloHertz split, not 600 kiloHertz where most amateur 2 meter
repeaters are operated.  This added frequency separation allows
for the duplexer to provide more than the stated isolation at the 500
kiloHertz specification.

The Wacom WP-641 is specified at 85 dB of isolation at a 500 kiloHertz
split, but provides 93 dB of isolation at 600 kiloHertz.  The
Sinclair Q202G is similar in its factory specifications, and isolation
provided.

Kevin Custer















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Re: [Repeater-Builder] Hyper Terminal

[K. Venkataramanan]

Hi
Hyperterm is available for download for at

ftp://ftp.hilgraeve.com/htpe/htpe63.exe
It is free personal users.
Venkataramanan

At 12:54 PM 20/03/2005, you wrote:

Is it a download from the MS web
site?
If so, what is the url ?
Mike
At 11:01 PM 3/19/05, you wrote:
>Don,
>
>We have several PC's that use HyperTerminal for communications to
other
>equipment. we have had a lot of problems using HyperTerminal until
we
>install the latest release. This is the one from Microsoft. They
have
>cleaned up a lot of the problems that the earlier versions had. The
new
>release is good for Windows 98 and above.
>
>We have not had a single problem with the new release. We are using
it on 98
>and 98SE, NT 4.0 SP4 and SP6, 2000, 2000 Pro and XP Pro.
>
>Every machine now works and all of the problems that we had are
gone.
>
>Charles Miller
>
>- Original Message -
>From: "Don" <[EMAIL PROTECTED]>
>To: 
>Sent: Saturday, March 19, 2005 11:21 AM
>Subject: [Repeater-Builder] Hyper Terminal
>
>
> >
> >
> > I have a Digital audio recorder that is Programmed by the PC
But I did
> > see this Note, The device may not Program Properly with
the
> > HyperTerminal program that comes with Microsoft Windows all
versions,
> > So the question I have What else is around that I could try,
Any info
> > will be greatly appreciated.
> >
> > Thanks Don KA9QJG
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
>
>
>
>
>
>
>Yahoo! Groups Links
>
>
>
>


 
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[Repeater-Builder] Micor receiver voting tone

[Marvin K. Hoffman]

There was both a factory option and a field modification kit that
allowed conventional Motorola Micor stations to be used in SpectraTac
systems.

First, a SpectraTac encoder card was added in the repeater card cage to
generate the status tone that allowed the "in-cabinet" (repeater)
receiver to vote along with the remote receivers.  The encoder card
normally produces a steady tone that is interrupted when a signal is
received.  The encoder module has low and high tone slide switches
which are used in equalizing the tone levels (which are adjustable on
the encoder card).  Secondly, the status tone is routed out through a
special four wire line driver so that the repeater receiver status tone
and any received audio is routed on one pair to a SpectraTac
comparator.  The second pair of audio lines on the line driver is used
to bring the "voted" audio from the comparator back to the repeater for
retransmission.  

There is also provision for "in-cabinet" repeat, which means that if
the comparator dies the repeater will repeat whatever audio the
repeater receiver is receiving just as if there was no SpectraTac
system connected to it.  The special "SpectraTac Line Driver" also had
circuits to add gain at certain audio frequencies so that the
repeater's receiver audio response more closely matched the response
curve of the remote receivers.

Marv Hoffman, WA4NC
Boone, NC

skipp025 wrote:

  
If you need a Spectra Tac type operation, there are 
modules (for the card-cage/backplane), which serve 
up the proper tone encoding functions. Most often 
you will see a special version of the line driver 
module and a "spectra tac encoder" module. 

Motorola also had an earlier A-B tone voting system 
(that seemed to work pretty well). Finding cards for 
that system would be hit and miss at best. 

Depends on the voter you have, but the spectra tac 
module manaul should have descriptions of the more 
common back plane modules. The common module manuals 
can often skip over the spectra tac options as they 
are/were special order or "as-built". 

I can't see why any duplex chassis couldn't be made 
to generate a proper encoder tone sequence, else you 
just need to properly add the circuit. 

Cetec Vega had a popular external voter tone encoder 
module, often seen installed after-market. 

cheers, 
skipp 



  
  
"bd6xray" <[EMAIL PROTECTED]> wrote:
Does a Micor base receiver, unified chassis, have any capability

  
  for 
  
  
generating a voting tone?  The "Control and Applications" manual

  
  does 
  
  
not make any mention of any cards that would do this.

Al Hajny

  
  






 
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Re: [Repeater-Builder] Mitrek

[K. Venkataramanan]

Hi Mike
Thanks.  Our frequencies are not same as US.  We are confined
to 434-438.  So I cannot expect availability of crystals / channel
elements in this range.  Of course they may be useless in the
US.  The local manufacturer of crystals can supply me with whatever
I need within 7 days and that too for a cost under $3 but I need to
specify the parameters - that is less than what it will cost for mere
postage from the US!!.  
I do not think any one in India has even seen a Mitrek.  So it
becomes important to be able to specify.  Of course I can just
blindly specify 3rd overtone crystal - series resonant and see what
happens.  Then I could alter parameters after I see what it
does.  Even if I have to waste a couple of crystals is no big deal
compared to the hassle of ordering and getting the xtals from US. 
If I get hold of the manual including the schematics I can make a more
intelligent guess looking on the channel element circuit diagram. 

There is a ham in Bangalore who used to work for Motorola and I hope he
will be able to hunt out some information.  I thought someone in the
US has a clue!!   Are there service manuals around - could one
beg, borrow or steal one ?
Thanks for your help.
73s  Venkat  VU2KV
At 03:51 AM 19/12/2004, you wrote:
I may be able to help, but it
will take a day or two...
While I make a couple of phone calls, Venkat what
frequencies do you need?
Maybe someone on this group has them in their box of
elements left over from their amateur radio conversions.
Of maybe someone has a leftover set of UHF commercial
elements with good crystals that are near his frequency and
can send them to Venkat.
His supplier could take those crystals, plug them into a test
circuit and determine the parameters by what loading is
needed to pull the test crystals onto the indicated frequency.
Mike WA6ILQ

At 02:05 PM 12/18/04, you wrote:
>I glanced at the call and thought it was a Canadian one. Ooops.
>I forget that world wide web means just that. Too used to
thinking
>there's just North Americans on the list for some foolish
reason.
>
>Chuck
>WB2EDV
>
>- Original Message -
>From: "Paul Kelley" <[EMAIL PROTECTED]>
>To: 
>Sent: Saturday, December 18, 2004 4:58 PM
>Subject: Re: [Repeater-Builder] Mitrek
>
> > Me too, but we live in the U.S.! I suspect living in India
> > gives one a very different perspective on that. I hope
> > someone can help Venkat with the xtal info. (Maybe someone
> > already has... I was only partially following the topic
> > since I don't have the requested info.)
> >
> > Paul N1BUG
> >
> >
> > On Saturday 18 December 2004 04:42 pm, Chuck Kelsey wrote:
> >> With all due respect, if the crystal manufacturer
cannot
> >> make a crystal for a Mitrek with just the channel
element
> >> part number, I'd seriously be looking for a different
> >> supplier.
> >>
> >> Chuck
> >> WB2EDV
> >>
> >> - Original Message -
> >> From: "krmvsjr" <[EMAIL PROTECTED]>
> >> To: 
> >> Sent: Saturday, December 18, 2004 6:01 AM
> >> Subject: [Repeater-Builder] Mitrek
> >>
> >> > Can anyone tell me details of crystal
specifications
> >> > for UHF mitrek. I am getting a T44JJA390DK and
would
> >> > like to replace the crystals for local
frequencies.  I
> >> > would like to get confirmation that the crystals
are
> >> > 3rd overtone crystals - series resonant - 32pf
capacity
> >> > - (freq =10.7 / 9 for RX)  I do not know the
freq
> >> > multiplication for TX crystal.  There is a
local
> >> > crystal manufacturer who can supply xrystals if
the
> >> > operating parameters are specified.  Can anywho
has a
> >> > the service manual make me a copy ?  Venkat 
VU2KV


 
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Re: [Repeater-Builder] Fan control

[K. Venkataramanan]

You can try this alternative that does not require any
thermistors

http://sound.westhost.com/project46.htm
Venkat VU2KV

At 11:07 AM 14/12/2004, you wrote:

Anyone have a parts list for
thermal control of 12VDC fan?  Thanks de
David




 
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Re: [Repeater-Builder] Kenwood TKR-750 & TKR-850

[Marvin K. Hoffman]

W9DHI wrote:

>William do you have high speed internet...if so I can send you the Service
>Manual on PDF.  And you are right E1 means the unit isn't programmed.
>
>
>Gregg R. Lengling, W9DHI, Un-Retired
>Administrator http://www.milwaukeehdtv.org
>K2/100 S#3075 KX1 S# 57
>Member:  ARRL, RSGB, RCA, WERA and ORC
> 
>
>
>-Original Message-
>From: valleyforge2002 [mailto:[EMAIL PROTECTED] 
>Sent: Friday, October 29, 2004 4:21 AM
>To: Repeater-Builder@yahoogroups.com
>Subject: [Repeater-Builder] Kenwood TKR-750 & TKR-850
>
>
>
>
>Hello all, I have got two Kenwood repeaters a TKR-750 and a TKR-850 
>which when switched on they come up with E1 in the display. I am 
>assuming this is because they are not programmed ?
>Where can I find out what all these codes mean and what are the pin 
>connections on the back ?
>The instruction manual is only 1 page and is just so basic it's 
>untrue. I assume there must be a full service handbook for these 
>repeaters, maybe someone can point me towards.
>I am trying (Just started) to build 2 repeaters for the island of 
>Malta and I am hoping that I can program these up with the help of 
>someone so that we can use them.
>
>Any pointers towards Kenwood TKR-750 & TKR-850 sites / mods / 
>programming / manuals / display codes ect. will be very welcome.
>
>Thank you all
>William A. Batey G0DEO / 9H1IA
>
>
>
>
>
>
>
>
>
>
> 
>Yahoo! Groups Links
>
>
>
> 
>
>
>
>
>
>
>
>
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Re: [Repeater-Builder] Question for the group

[Marvin K. Hoffman]

I found my old General Radiotelephone that was converted to lifetime in
1985.  No record of the old 1st and 2nd Class Radiotelephone, however.

Use "last name, first name" on the search.

Marv Hoffman, WA4NC
PG057703

Paul Finch wrote:

  Got this off the Tower Pro group, check out this site for you questions.

http://wireless2.fcc.gov/UlsApp/UlsSearch/searchLicense.jsp

I have not been able to find my old FCC license, found my Ham license but no
General Radiotelephone!

Paul


-Original Message-
From: Russ Hines [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, August 11, 2004 12:41 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Question for the group


Hi Frank:

The First Class Radiotelephone Operator's License was replaced with
the General Radiotelephone Operator's License nearly 20 years ago.
Approximately equivalent to the old 2nd Class license, the GROL is
only needed for aviation, marine, and international public fixed
stations.

These days, one does not need any license to work as a tech at a
broadcast station, radio or TV.  The FCC put the responsibility for
proper operation of a station's transmitter in the hands of the
station licensee, and leaves it up to them to hire competent techs.
This was part of deregulation back during the Reagan Administration.

I'm not aware of any database for commercial licensees, but if there
is one, I'd guess either the FCC, NARTE, ISCET or NRE might likely
post it on the web.

Hope this helps.

73,
Russ
WB8ZCC



- Original Message -
From: "Frank or Barb" <[EMAIL PROTECTED]>
To: "List Server repeater-builder"

Sent: Wednesday, August 11, 2004 1:18 AM
Subject: [Repeater-Builder] Question for the group


  
  
I have a neighbor who works for a cellular carrier, and had the

  
  old FCC
  
  
First Class Radio Telephone license.
First question, is that license still required for techs at tv and

  
  radio
  
  
stations or did the FCC drop the requirement?
Is there a place on the web to search a license database?
They are not listed in the ULS web site.
Thanks
N3FLR - Frank





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RE: [Repeater-Builder] GE Custom MVP manual wanted

[W. K. Carr III]

Bill:

I also need a UHF MVP manual. If Andrew doesn't want it, let me know.

Kim , K5TU

-Original Message-
From: Bill [mailto:[EMAIL PROTECTED]
Sent: Monday, May 31, 2004 6:10 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] GE Custom MVP manual wanted

Hi Andrew; I have a original GE UHF MVP manual for sale, It is in
"GREAT" condition! $25.00 Plus shipping. Thanks, Bill N8LXM

kc2eus wrote:

>I'm looking for a source for a GE Custom MVP manual UHF version.
>
>Thanks
>Andrew
>KC2EUS / GM1YMI
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Re: [Repeater-Builder] Mot. Handie Talkie RF Link

[Marvin K Hoffman]

Mike:

Post a price so I can make an offer.

Marv Hoffman, WA4NC

- Original Message -
From: Mike Pugh <[EMAIL PROTECTED]>
Date: Thursday, May 20, 2004 11:15 pm
Subject: Re: [Repeater-Builder] Mot. Handie Talkie RF Link

> Hi Paul. It's been a while, hope this finds you doing well. What 
> do you 
> want for this box? Do you have pictures?
> 
> Mike Pugh KA4MKG
> Lexington, Ky.
> 
> K.Paul Boggs wrote:
> 
> > I have for sale or trade a Motorola "Handie
> > Talkie" RF Link. 440-512MHZ. Presently on
> > 466.1125 TX 451.1125 RX  PL 6Z 167.9
> > 2/4 watt. Runs on 12V 110/220 vollt. Built in
> > power supply, internal duplexer. In factory
> > metal box. DO NOT HAVE ORIGINAL LID.
> > or rubber gasget.  Go to BATLABS before
> > contacting me direct. Have Motorola Service
> >  Manual. Weight now 15lbs. Make a great portable
> > emergency repeater. All factory, NO MODS
> > Paul
> >  
> >  
> > K.Paul Boggs
> > [EMAIL PROTECTED] <')" >[EMAIL PROTECTED]>
> > Mountain Emergency Communications
> >  
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > -
> ---
> > Yahoo! Groups Links
> > 
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> > * To unsubscribe from this group, send an email to:
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> >   <')" >Repeater-Builder-
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> >   Service <." target="l">http://docs.yahoo.com/info/terms/>. 
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Re: [Repeater-Builder] the mobile micor

[Marvin K. Hoffman]

I have seen a Micor mobile hooked to an Astron power supply that went
whacko and for an indeterminate period was running 16 volts from the
p.s. with no apparent damage to the Micor.  On the other hand, I saw
one in a police car in which the voltage regulator in the alternator
went whacko and fried everything (battery, bulbs, radio, electronic
siren) when the alternator voltage went to 25 volts at high engine
r.p.m.'s. during a rather long pursuit.

Marv, WA4NC

Mike Morris WA6ILQ wrote:

  At 10:14 AM 4/12/04 -0400, you wrote:

  
  
any one know what the max dc volts a micor can take before it cooks?
I have a motorola cabinet not sure from what but it has a power supply in it
that is capable of out putting 13.1 to 16.3 v at 36a. I just want to be sure
that I won't cook the repeater and the control micor mobile. yes I will have
two micors one will be a simplex control radio the other will be duplexed
for the repeater I will also have a tmd 700 for a frequency agile link
radio. plus a rc 210 all runing off this power supply.

  
  
If you are running mobiles as a repeater system plus other radios that expect
13.8v I'd set it to 13.8v and use heavy wire to a power distribution buss that
feeds the radios, but in any case no more than 14.0

Mike WA6ILQ





 
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