[Repeater-Builder] micor / mitrek stuff for sale (make offer!)

[doug]

all of this stuff is offered to defray the costs of our new stationmaster 
antenna ($640.00).



i have a 110w mitrek, xtal'd on 147.000 rx and 146.4 tx (nice shape!)

i have a 110w micor xtal'd 145.71 simplex (REALLY nice shape - CLEAN)

neither have control heads tho... i have cables and speakers for the 
micor... and maybe a control head and cable for the mitrek - have to look.


i have a maxar 80 VHF (low power - 20w?) clean (bare radio only)
and a MOXY VHF - high power (40w?) clean (mic, no power connx)

i have about 10  micor mobile audio and squelch boards, TRN 4310 (?) - all 
are pulls from mobiles and are in decent shape - just need some circuit 
cleaner on them (no water damage) -- make offer

and i have the 10 mobile chassis i pulled the AS boards out of if you 
want/need micor parts, speak up NOW with part numbers you have until 
tomorrow morning before they go away... i have one UHF and about 9 VHF 
chassis in varying conditions but most are complete (tx and rx strips, etc) -



EMAIL ME PLEASE  I WILL *NOT* SEE YOUR REPLY ON THIS LIST UNTIL TOMORROW PM



doug
kc5bmj







 
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[Repeater-Builder] UHF link

[dy3lmk143_13mhz]

I've never had experience on UHF. any experience how far would a 50 
watts UHF link (440 MHz) can get? Antennas would be line of sight and 
no obstruction. we planning to link 2m repeaters. Do you have 
schematics on how to link repeaters? thanks





 
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Re: [Repeater-Builder] Duplexer Cable Legnth

[Eric Lemmon]

Jim,

There is no single, universal formula for calculating the cable length,
simply because the cables are only part of the circuit.  The lengths of
the loops or probes that are inside the cavities must be included, and
it does make a difference whether loops or probes are used.  Also, many
duplexer manufacturers use different lengths of loops or probes in
different band splits.

One quick and dirty method that seems to work in many cases is to
first determine what frequencies the duplexer is currently tuned to. 
Then calculate the electrical wavelength at that frequency, and
determine what fraction of that wavelength the existing cables
represent, after considering the cable velocity factor.  Now, calculate
the length of the new cables, based on the same fraction but at the
lower Ham frequencies.  Make up new interconnecting cables and try them
out- you might luck out and have a good match.

The precise method requires a network analyzer, or a spectrum analyzer
with tracking generator and return loss bridge.  Each cavity is first
tuned to the exact pass and notch frequencies, with identical return
loss on both ports.  The loops or probes are carefully adjusted for the
optimum return loss at the specified insertion loss, which will probably
be around 0.7 dB per cavity.  Here's the critical part:  If the
interconnecting cables are exactly the right length, the series
insertion loss of a pair or trio of cavities will be the sum of the
individual losses, plus the small losses of the cables.  If the cables
are not the correct length, either the total insertion loss will be
excessive, or the notches will be insufficient, or both.

I am always amazed that relatively crude tuning practices can result in
a duplexer that is very close to being perfect.  It's that last 5
percent that calls for a network analyzer- and when you're running a lot
of solid-state power with a very sensitive receiver, sometimes you need
every bit of performance you can get!

73, Eric Lemmon WB6FLY

Jim Cicirello wrote:
 
 Is there a formula to calculate the cable length between duplexer cans?...




 
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RE: [Repeater-Builder] UHF link

[Richard]

-Original Message-
From: dy3lmk143_13mhz [mailto:[EMAIL PROTECTED]
Sent: Sunday, March 28, 2004 5:39 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] UHF link


I've never had experience on UHF. any experience how far would a 50 
watts UHF link (440 MHz) can get? Antennas would be line of sight and 
no obstruction. we planning to link 2m repeaters. Do you have 
schematics on how to link repeaters? thanks





 
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[Repeater-Builder] Low Band Noise Blanker Question

[kq2h]

Does anyone know where I can find tuning instructions for a GE Mastr 
II Low Band receiver noise blanker? I have looked in service manuals 
and have found no information. 

Has anyone used a noise blanking receiver as a repeater receiver on 
6M or 10M ? The noise blanker seems to help in a mobile environment, 
but I am not sure if it would work with a duplexer or bandpass 
cavitiy inline with the antenna. The sampling frequency will not pass 
through Alex





 
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Re: [Repeater-Builder] Low Band Noise Blanker Question

[Kevin Custer]

kq2h wrote:

Does anyone know where I can find tuning instructions for a GE Mastr 
II Low Band receiver noise blanker? I have looked in service manuals 
and have found no information. 


Sorry, can't help there, but

Has anyone used a noise blanking receiver as a repeater receiver on 
6M or 10M ? The noise blanker seems to help in a mobile environment, 
but I am not sure if it would work with a duplexer or bandpass 
cavitiy inline with the antenna. The sampling frequency will not pass 
through Alex


A noise blanker won't work in a duplex situation because the blanker 
front end won't be in the pass area of the duplexer, and more 
importantly, transmitter side-band noise will wipe out the AM detector 
rendering the receiver near useless.

Kevin






 
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RE: [Repeater-Builder] UHF link

[Richard]

I can't help you much with the connection method, but I can give you an
example of how much power is needed to link repeaters. My IRLP node, located
at my house, is linked to the repeater using small beam antennas over a
distance of about 12 miles. Even with an intervening hill, it is done using
only seven watts!

Richard, N7TGB

-Original Message-
From: dy3lmk143_13mhz [mailto:[EMAIL PROTECTED]
Sent: Sunday, March 28, 2004 5:39 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] UHF link


I've never had experience on UHF. any experience how far would a 50
watts UHF link (440 MHz) can get? Antennas would be line of sight and
no obstruction. we planning to link 2m repeaters. Do you have
schematics on how to link repeaters? thanks






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Re: [Repeater-Builder] Low Band Noise Blanker Question

[Neal Newman]

 Hey Alex   Go Away
looking for some 6 meter duplexers  For almost nothing... know where I 
can get some?
LOL
How are you?
 Hows the family?
Hows the Great white north of NY..?


kq2h wrote:

Does anyone know where I can find tuning instructions for a GE Mastr 
II Low Band receiver noise blanker? I have looked in service manuals 
and have found no information. 

Has anyone used a noise blanking receiver as a repeater receiver on 
6M or 10M ? The noise blanker seems to help in a mobile environment, 
but I am not sure if it would work with a duplexer or bandpass 
cavitiy inline with the antenna. The sampling frequency will not pass 
through Alex





 
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Re: [Repeater-Builder] UHF link

[Chuck Kelsey]

Line of sight should give you 100 miles with only 5-10 watts. I've done 65
miles with one watt.

Chuck
WB2EDV



- Original Message - 
From: Richard [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, March 28, 2004 9:31 PM
Subject: RE: [Repeater-Builder] UHF link


 I can't help you much with the connection method, but I can give you an
 example of how much power is needed to link repeaters. My IRLP node,
located
 at my house, is linked to the repeater using small beam antennas over a
 distance of about 12 miles. Even with an intervening hill, it is done
using
 only seven watts!

 Richard, N7TGB

 -Original Message-
 From: dy3lmk143_13mhz [mailto:[EMAIL PROTECTED]
 Sent: Sunday, March 28, 2004 5:39 PM
 To: Repeater-Builder@yahoogroups.com
 Subject: [Repeater-Builder] UHF link


 I've never had experience on UHF. any experience how far would a 50
 watts UHF link (440 MHz) can get? Antennas would be line of sight and
 no obstruction. we planning to link 2m repeaters. Do you have
 schematics on how to link repeaters? thanks






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Re: [Repeater-Builder] UHF link

[Fred Flowers]

Well I don't know how far one can link with 440. However I have a link of 50 miles with 10 watts.  Fred KF4QZN   - Original Message - From: dy3lmk143_13mhz Sent: Sunday, March 28, 2004 7:39 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] UHF link I've never had experience on UHF. any experience how far would a 50 watts UHF link (440 MHz) can get? Antennas would be line of sight and no obstruction. we planning to link 2m repeaters. Do you have schematics on how to link repeaters? thanksYahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* 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/













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Re: [Repeater-Builder] Low Band Noise Blanker Question

[Chuck Kelsey]

I don't use a blanker on my 6 meter machine, but I've heard that some have
had success connecting the blanker to a separate RX antenna.

Another approach is to use a Delta with the blanker board installed. This
blanker does its job at I.F. frequencies instead of a separate front end. It
worked great on the mobile I used to have installed.

Chuck
WB2EDV



- Original Message - 
From: kq2h [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, March 28, 2004 9:39 PM
Subject: [Repeater-Builder] Low Band Noise Blanker Question


 Does anyone know where I can find tuning instructions for a GE Mastr
 II Low Band receiver noise blanker? I have looked in service manuals
 and have found no information.

 Has anyone used a noise blanking receiver as a repeater receiver on
 6M or 10M ? The noise blanker seems to help in a mobile environment,
 but I am not sure if it would work with a duplexer or bandpass
 cavitiy inline with the antenna. The sampling frequency will not pass
 through Alex








 
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Re: [Repeater-Builder] UHF link

[vs]

Here in Southern California  the surrounding border-areas, there are 
several systems with long paths on 420MHz (the same as 440MHz path 
behavior). One of the longest is ~165 miles @ 13W before duplexer/feedline 
losses. 10-20W is quite typical for links, and 50W is overkill for most. 
Most of the systems I deal with run fully-duplexed links, and flatpak 
duplexers are quite common for them. Running 50W is at the edge of what 
they'll take of raw power and not likely to be free of desense. If it's 
half-duplex and you can make the radios live with the talk-time at that 
power level, go for it.

73,
-Matt W6KGB


At 09:58 PM 3/28/2004 -0500, you wrote:
Line of sight should give you 100 miles with only 5-10 watts. I've done 65
miles with one watt.

Chuck
WB2EDV





 
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Re: [Repeater-Builder] Duplexer Cable Legnth

[Jim Cicirello]

Where did you find (what is) the formula for jumpers from the duplexer
 to the transmitter and receiver?

 N7HQR


http://www.repeater-builder.com/ge/duptuning.html


I have been told that this formula, explained in Paragraph 4 of the above
site, also works for the electrical length from the duplexer to the TX-RX.
Others say that only the TX is SOMETIMES critical and a Z-Matcher will also
work. If anyone feels I have misunderstood this information, please let me
know.

When inserting any in-line devices in to your repeater's feed line, be sure
any added feed line(s) used to connect the device (like a watt meter) are at
least one half wave length of your transmit frequency. You can calculate the
electrical length required by dividing your frequency in to 5904 and
multiplying the result by the velocity factor of your feed line. This will
yield the 1/2 electrical wave length in inches, tip to tip including the RF
connector. An example, 5904/442.275 = 13.35, now multiply 13.35 by the
velocity factor of the feed line, I'll use 66%, 13.35 * .66 = 8.81 inches.
You can use any multiple of the result 8.81, 17.6, 26.43, 35.24. Also try to
use a good watt meter like the Bird, the less expensive watt meters are not
a true power measuring device but a glorified voltage meter which can be
easily fooled by hi Q as found in a duplexer.



JIM   KA2AJH



- Original Message -
From: Daron J. Wilson [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, March 28, 2004 6:38 PM
Subject: RE: [Repeater-Builder] Duplexer Cable Legnth



  Where did you find (what is) the formula for jumpers from the duplexer
 to the transmitter and receiver?

 N7HQR







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Re: [Repeater-Builder] desktrac

[Mike Morris]

With the service monitor that goes in the kit.
Not part of my concern - they just want a
portable UHF repeater with autopatch and a
connector that can be plugged into a vehicle
cigarette lighter to keep the internal battery
charged.

At 05:41 PM 3/28/04 -0500, you wrote:

How did they intend to address tuning of the duplexer?
Maybe I missed something.

Good LuckJIM   KA2AJH

- Original Message -
From: Mike Morris WA6ILQ [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, March 28, 2004 3:10 PM
Subject: Re: [Repeater-Builder] desktrac

  At 03:41 PM 3/28/04 +, you wrote:
 
  Is there any PDF's on the controls of a desktrac?
 
  Not at www.repeater-builder.com just yet.
 
  I've been contacted by a group that is looking at taking
  a Desktrac UHF repeater and building it up in a metal
  suitcase for use as a rapid deployment repeater...  Toss
  it, a 486 laptop, a short stationmaster and some feedline
  on an airplane and  have a functioning repeater on any
  460mhz pair anywhere in the country in a few hours.
 
  If the project gets the green light - which may take as long
  as six months - I'll have a Desktrac and a manual set in hand
  here for a few weeks.  Once i have everything sorted out I'll
  do an Interfacing article similar to my Mitrek article at
  http://www.repeater-builder.com/mitrek/mitrek-interfacing.html.
 
  Or if someone wants to loan me a Desktrac (it can be a high band or
  UHF simplex or duplex model) and a manual I'll get to it a lot faster.
 
  Or a Spectra version of the Desktrac.
 
  Mike WA6ILQ





 
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RE: [Repeater-Builder] Please help me with Kenwood 840's

[Steve S. Bosshard \(NU5D\)]

Seems like Kenwood has a KCT-19 cable that plugs into the radio and brings
a 15 pin molex connector out of the radio.  This has all the PTT, COR, Mic
IN, etc needed to interface.  Also seems line JB Enterprises has a $70
controller with CWID (whole controller abt the cost of an ID8) that
programs with hyper term and a com cable.

The KCT-19s are a little over $20 each.  You will need to buy a couple of
male 15 pin molex connectors, another $10 and do some soldering to connect
to the controller board.

I am going from memory here, and not certain the KCT-19 fits the 840.  It
does fit the 880.

Also you will need to program the 840's.  Put the same send and receive in
each radio, and use the alignment software to TURN DOWN THE TRANSMIT TO
AROUND 10 WATTS.  With a couple of boxer fans on the PA you may go for a
while.  With both programmed the same you can swap TX/RX when the PA fails.

If it is going to get serious work out you may consider 5 Watts out - this
is a match for most 4 Watt talkies, and with GOOD DUPLEXER, CABLE and
ANTENNA can make up for not so hot power on transmit.

I will double check the KCT-19 on the 840 in the morning.

73,
Steve
NU5D








 
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RE: [Repeater-Builder] Please help me with Kenwood 840's

[Steve S. Bosshard \(NU5D\)]

The controller was NOT JB Enterprises.  It was BD Enterprises - Perhaps a
Freudian slip concerning a bottle of Scotch Whiskey.

The url is:

http://www.bdenterprises.com/products/

[Steve S. Bosshard (NU5D)] 








 
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Re: [Repeater-Builder] Duplexer Cable Legnth

[Glenn Little WB4UIV]

The need for the specific length is to keep from seeing a false reading on 
the power measuring device. If the duplexer is tuned properly and the 
transceiver is tuned properly, the length of the cable makes no difference. 
The requirement for a specific length of cable is because some people 
insist on using a wrong range PA (ie not tuned to the frequency that it is 
being used on) and do not understand the complexities of assembling a 
system with mistuned components. By selecting a length of feedline, I can 
coverup an impedance problem between the transmitter and the duplexer. The 
use of the tuned line is to makeup for the inability to properly tune the 
RF components. In a properly tuned system the feedline length does not 
matter. The feedline is 50 Ohms, the transmitter is 50 Ohms and the 
duplexer is 50 Ohms. Everyone is happy.

73
Glenn
WB4UIV

At 10:33 PM 03/28/04 -0500, you wrote:
Where did you find (what is) the formula for jumpers from the duplexer
  to the transmitter and receiver?
 
  N7HQR


http://www.repeater-builder.com/ge/duptuning.html


I have been told that this formula, explained in Paragraph 4 of the above
site, also works for the electrical length from the duplexer to the TX-RX.
Others say that only the TX is SOMETIMES critical and a Z-Matcher will also
work. If anyone feels I have misunderstood this information, please let me
know.

When inserting any in-line devices in to your repeater's feed line, be sure
any added feed line(s) used to connect the device (like a watt meter) are at
least one half wave length of your transmit frequency. You can calculate the
electrical length required by dividing your frequency in to 5904 and
multiplying the result by the velocity factor of your feed line. This will
yield the 1/2 electrical wave length in inches, tip to tip including the RF
connector. An example, 5904/442.275 = 13.35, now multiply 13.35 by the
velocity factor of the feed line, I'll use 66%, 13.35 * .66 = 8.81 inches.
You can use any multiple of the result 8.81, 17.6, 26.43, 35.24. Also try to
use a good watt meter like the Bird, the less expensive watt meters are not
a true power measuring device but a glorified voltage meter which can be
easily fooled by hi Q as found in a duplexer.



JIM   KA2AJH



- Original Message -
From: Daron J. Wilson [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, March 28, 2004 6:38 PM
Subject: RE: [Repeater-Builder] Duplexer Cable Legnth


 
   Where did you find (what is) the formula for jumpers from the duplexer
  to the transmitter and receiver?
 
  N7HQR
 
 
 
 
 
 
 
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[Repeater-Builder] Please help me with Kenwood 840's

[vol_fire964]

I have two Kenwood TK-840's and would like to make them into a 
repeater. Is there anyone willing to help me with very detailed 
instuctions to do so. I am putting this together for the first time 
and I don't know anything about repeaters. Also, my budget is very 
limited so I will need a cheap controller and wiring and wiring 
diagrams. I will look into an amp later to push about 50 or 60 
watts. I am going to run as a test repeater for a few months on 5 
watts.

Thank you in advance for the help.






 
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[Repeater-Builder] M6709 vs. M7716

[Adam C. Feuer]

Kevin  All,

I have a Micor SpectraTac Audio Squelch Card with a 
blown up M7716 IC. I have the older version chip as a replacement, the 
M6709.

Will I see a difference in squelch performance from 
the new chip to the old? It's the only replacement that I 
have.

Thanks!

Adam N2ACF













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Re: [Repeater-Builder] M6709 vs. M7716

[Kevin Custer]

Adam C. Feuer wrote:

  
  
  
  Kevin  All,
  
  I have a Micor SpectraTac Audio
Squelch Card with a blown up M7716 IC. I have the older version chip as
a replacement, the M6709.
  
  Will I see a difference in squelch
performance from the new chip to the old? It's the only replacement
that I have.


No, they are exactly the same just a different part number.

Kevin














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[Repeater-Builder] Re: M6709 vs. M7716

[n2acf]

Thanks Kevin!


 Adam C. Feuer wrote:
 
  Kevin  All,
   
  I have a Micor SpectraTac Audio Squelch Card with a blown up 
M7716 IC. 
  I have the older version chip as a replacement, the M6709.
   
  Will I see a difference in squelch performance from the new chip 
to 
  the old?  It's the only replacement that I have.
 
 
 No,  they are exactly the same just a different part number.
 
 Kevin





 
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Re: [Repeater-Builder] a little help

[russ]

Hey Eric,
Give cook towers a call they have every thing from soap to nuts for 220 MHZ
we buy lots of the stuff we use on Metro-Comm from then and they give a good
discount to us Ham's they do sell RFS (Celwave) and DB and even Sinclair.
They even sell repeaters and duplexers.

Good Luck,
73 Russ, W3CH
Trustee W3PS
Metro-Comm repeater network.

- Original Message - 
From: Eric Lemmon [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, March 28, 2004 2:50 PM
Subject: Re: [Repeater-Builder] a little help


 Donnie,

 I view good to mean commercial-grade.  Reliable, high-performance
 antennas are available for the 220 band from RFS/Celwave, Decibel
 Products, and Sinclair.  They're not cheap, and a good antenna will cost
 between 500 and 800 bucks.  Depending upon your repeater location
 relative to the desired coverage area, it might be wise to use an offset
 dipole antenna instead of a vertical omnidirectional fiberglass
 antenna.  Whichever antenna design you choose, consider using a top
 support to keep it from waving in the wind.

 73, Eric Lemmon WB6FLY

 Donnie Q wrote:
 
 I am putting a 220 machine on the air in Michigan... does anyone have
 any ideas of a good antenna...?





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Re: [Repeater-Builder] WTB: 440 Mhz Receiver with COR

[Mathew Quaife]

Thanks Russ, will give them a call.

Mathew
russ [EMAIL PROTECTED] wrote:
Try Maggiore Labs in West Chester PA.there phone number is 610-436-6051 they make a top notch reciver. Betterthen some of the older stuff for around the same price.Good luck and 73,Russ, W3CHTrustee W3PSMetro-Comm repeater network.- Original Message - From: "w9mwq" <[EMAIL PROTECTED]>To: Sent: Sunday, March 28, 2004 5:56 PMSubject: [Repeater-Builder] WTB: 440 Mhz Receiver with COR I am looking for a inexpensive 440 Mhz receiver with a COR output to replace the one that is with my 440 repeater. The receiver will be connected to an RLC2 contoller. Let me know what you have and price. Thanks. Mathew Yahoo! Groups
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Yahoo! Finance Tax Center - File online. File on time.













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Re: [Repeater-Builder] WTB: 440 Mhz Receiver with COR

[russ]

Try Maggiore Labs in West Chester PA.
there phone number is 610-436-6051 they make a top notch reciver. Better
then some of the older stuff for around the same price.
Good luck and 73,
Russ, W3CH
Trustee W3PS
Metro-Comm repeater network.

- Original Message - 
From: w9mwq [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, March 28, 2004 5:56 PM
Subject: [Repeater-Builder] WTB: 440 Mhz Receiver with COR


 I am looking for a inexpensive 440 Mhz receiver with a COR output to
 replace the one that is with my 440 repeater.  The receiver will be
 connected to an RLC2 contoller.  Let me know what you have and
 price.  Thanks.

 Mathew







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Re: [Repeater-Builder] a little help

[russ]

I FOR GOT THE PHONE NUMBER OR E-MAIL ADDRESS.
Toll free number 877-992-2665
e-mail [EMAIL PROTECTED]
Good luck!
73 Russ W3CH


- Original Message - 
From: russ [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Cc: [EMAIL PROTECTED]
Sent: Monday, March 29, 2004 9:49 AM
Subject: Re: [Repeater-Builder] a little help




 Hey Eric,
 Give cook towers a call they have every thing from soap to nuts for 220
MHZ
 we buy lots of the stuff we use on Metro-Comm from then and they give a
good
 discount to us Ham's they do sell RFS (Celwave) and DB and even Sinclair.
 They even sell repeaters and duplexers.

 Good Luck,
 73 Russ, W3CH
 Trustee W3PS
 Metro-Comm repeater network.

 - Original Message - 
 From: Eric Lemmon [EMAIL PROTECTED]
 To: Repeater-Builder@yahoogroups.com
 Sent: Sunday, March 28, 2004 2:50 PM
 Subject: Re: [Repeater-Builder] a little help


  Donnie,
 
  I view good to mean commercial-grade.  Reliable, high-performance
  antennas are available for the 220 band from RFS/Celwave, Decibel
  Products, and Sinclair.  They're not cheap, and a good antenna will cost
  between 500 and 800 bucks.  Depending upon your repeater location
  relative to the desired coverage area, it might be wise to use an offset
  dipole antenna instead of a vertical omnidirectional fiberglass
  antenna.  Whichever antenna design you choose, consider using a top
  support to keep it from waving in the wind.
 
  73, Eric Lemmon WB6FLY
 
  Donnie Q wrote:
  
  I am putting a 220 machine on the air in Michigan... does anyone have
  any ideas of a good antenna...?
 
 
 
 
 
  Yahoo! Groups Links
 
 
 
 
 
 






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Re: [Repeater-Builder] UHF link

[russ]

For radio's on 927 we are useing Motorola Maxtrac's for our link repeaters
we are using Kenwood and Hamtronic's. We are using 972.***
and 902.*** our tests have gone very well.
We plan to install a pile of the stuff Sunday April 4th.
We will keep every one posted as to how we make out the 927 repeaters and
links.
Very best of 73,
Russ, W3CH


- Original Message - 
From: Tedd Doda [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Monday, March 29, 2004 10:41 AM
Subject: Re: [Repeater-Builder] UHF link


 On Mon, 29 Mar 2004 09:31:02 -0500, russ wrote:

 We are going to change it from 420
 MHz to 927 MHz over the week end of April 4th.

 Hi Russ:

 What are you using for radios? Also, any foreseen problems
 from cordless phones?

 Thanks,



 Tedd Doda, VE3TJD

 Lazer Audio and Electronics
 Baden, Ontario, Canada








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Re: [Repeater-Builder] UHF link

[Tedd Doda]

On Mon, 29 Mar 2004 09:31:02 -0500, russ wrote:

We are going to change it from 420
MHz to 927 MHz over the week end of April 4th.

Hi Russ:

What are you using for radios? Also, any foreseen problems
from cordless phones?

Thanks,



Tedd Doda, VE3TJD

Lazer Audio and Electronics
Baden, Ontario, Canada







 
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Re: [Repeater-Builder] UHF link

[russ]

We have a 420 MHz link path that runs from Chester PA to Ocean City NJ that
only runs 2 Watts. It works just fine. We are going to change it from 420
MHz to 927 MHz over the week end of April 4th. Not because it does not work
well but because we  have Hams get on one or the outher pairs and talk
simplex. Big problem. We up graded  most of our links to 1296 MHz but this
path is shakie on 1296 in the summer so we are going with 927 as there are
not many Hams there. We will report on how it makes out.

Very best of 73,
Russ, W3CH
Trustee, W3PS
Metro-Comm repeater Network.


- Original Message - 
From: [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, March 28, 2004 10:31 PM
Subject: Re: [Repeater-Builder] UHF link



 Here in Southern California  the surrounding border-areas, there are
 several systems with long paths on 420MHz (the same as 440MHz path
 behavior). One of the longest is ~165 miles @ 13W before duplexer/feedline
 losses. 10-20W is quite typical for links, and 50W is overkill for most.
 Most of the systems I deal with run fully-duplexed links, and flatpak
 duplexers are quite common for them. Running 50W is at the edge of what
 they'll take of raw power and not likely to be free of desense. If it's
 half-duplex and you can make the radios live with the talk-time at that
 power level, go for it.

 73,
 -Matt W6KGB


 At 09:58 PM 3/28/2004 -0500, you wrote:
 Line of sight should give you 100 miles with only 5-10 watts. I've done
65
 miles with one watt.
 
 Chuck
 WB2EDV






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Re: [Repeater-Builder] Duplexer Cable Legnth

[Jim B.]

Daron J. Wilson wrote:

Is there a formula to calculate the cable legnth between duplexer
cans? I find reference to the formula for the cable legnth coming
from the duplexer to the TX-RX, but not between the cans.
 
 
 Where did you find (what is) the formula for jumpers from the duplexer
 to the transmitter and receiver?
 
 N7HQR
 

...especially since those lengths aren't important.

-- 
Jim Barbour
WD8CHL





 
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[Repeater-Builder] Re: Please help me with Kenwood 840's

[skipp025]

You need the kct-19 option cable, the standard 
software to program the radio and a basic 
repeater controller. I have the KCT-19 package
(includes both the radio interface cable and 
matching plugs) in stock for $22 each plus actual 
shipping. 

I include photocopy of the specific radio to 
kct-19 interface.  Wiring to your controller of 
choice is done by following the controller install
information. 

The 840 does not provide as many tone panel 
options as the tk-880, but they do work well 
and they are often sold cheap on the internet. 

Boyd of BD Enterprises, sells a really nice 
basic controller that works very well. You can 
Email him direct or find his auctions on 
Ebay... typical controller pricing is about $69 

These units work well with a tk-840 layout. 

Be carefull about running the 840 at full 
power repeater operation without some form 
of cooling fan. You don't want to overheat 
the PA (power amplifier) Section. 

cheers
skipp 
www.radiowrench.com 


 vol_fire964 [EMAIL PROTECTED] wrote:
 I have two Kenwood TK-840's and would like to make them into a 
 repeater. Is there anyone willing to help me with very detailed 
 instuctions to do so. I am putting this together for the first time 
 and I don't know anything about repeaters. Also, my budget is very 
 limited so I will need a cheap controller and wiring and wiring 
 diagrams. I will look into an amp later to push about 50 or 60 
 watts. I am going to run as a test repeater for a few months on 5 
 watts.
 
 Thank you in advance for the help.





 
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Re: [Re: [Repeater-Builder] WTB: 440 Mhz Receiver with COR]

[JOHN MACKEY]

Am I confused, or haven't we all talked about Maggoire labs equipment before 
said they are crap?

russ [EMAIL PROTECTED] wrote:

 Try Maggiore Labs in West Chester PA.
 there phone number is 610-436-6051 they make a top notch reciver. Better
 then some of the older stuff for around the same price.
 Good luck and 73,
 Russ, W3CH
 Trustee W3PS
 Metro-Comm repeater network.
 
 - Original Message - 
 From: w9mwq [EMAIL PROTECTED]
 To: Repeater-Builder@yahoogroups.com
 Sent: Sunday, March 28, 2004 5:56 PM
 Subject: [Repeater-Builder] WTB: 440 Mhz Receiver with COR
 
 
  I am looking for a inexpensive 440 Mhz receiver with a COR output to
  replace the one that is with my 440 repeater.  The receiver will be
  connected to an RLC2 contoller.  Let me know what you have and
  price.  Thanks.
 
  Mathew
 
 
 
 
 
 
 
  Yahoo! Groups Links
 
 
 
 
 
 
 
 
 
 
 
  
 Yahoo! Groups Links
 
 
 
  
 
 







 
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Re: [Re: [Repeater-Builder] WTB: 440 Mhz Receiver with COR]

[albemarle7]

A lot of Maggoire repeater bashing has been mentioned. I must admit Russ, you 
have good things to say about Maggorie. A super secret 220 Mhz repeater was 
just installed on the tower I am on and where did they put the antenna? Right 
next to my 2 meter repeater antenna.  Everytime the 220 machine keys up my 2 
meter Micor repeater goes deaf.  I replaced the Micor with my old 15 year old 
Maggoire home made repeater and it hears as well as the Micor does plus it 
don't 
stop playing when the 220 machine keys up. Move over Russ and let me join 
you. 





 
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[Repeater-Builder] Noise Blankers UHF Links

[Fred Seamans]

The design of noise blankers were to eliminate the 
impulse noise of our wonderful automobiles. Most noise blankers use a separate 
RF front end on a frequency 5 or more Mhz removed from the main receiver 
frequency. When the noise reaches a predetermined design level of blanking the 
noise blanker ceases to blank the IF or audio signal in the main 
receiver.
Noise blankers were never designed to function in a 
base station/repeater stationenvironment where you have very little 
impulse noise. If one is operational at a station site, it could be totally 
ineffective due to other signals causing interference on the noise blanker 
receive frequency. Some types of power line noise will be reduced, however most 
will overload the blanker.
The best advise is do not use a noise blanker at a 
station site unless there is a very good reason to do so.

UHF Links: Almost every link is different. I to 
have had low power links operate over 50 miles from high elevations to various 
sites that were line of site. I have had a UHF link that required 100 watts on 
both ends, mountain top to mountain top in Montana, 45 miles separation. There 
was another mountain top in the middle of the path obstructing the 
path.
Get a copy of com-shop and put an effort into the 
path design that you want to have operational. Most reliable designs require 
better that a 90% reliability factor for year round and all weather operation. I 
have seen some poorly designed links that would only operate in the fall and 
winter when the trees did not have any foliage on them and the user would 
complain the other few months of the year and not spend any money to fix the 
problem.
If your going to put in a UHF link - DO IT 
RIGHT!













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[Repeater-Builder] Re: Diversity RX 2 meters

[Laryn Lohman]

Steve thanks for the links posted about diversity.  Learned some 
stuff there.

Laryn K8TVZ


--- In Repeater-Builder@yahoogroups.com, Steve S. Bosshard \(NU5D\) 
[EMAIL PROTECTED] wrote:
 http://www.sigmawireless.ie/documents/Understnd%20Spc%20Dvrsty%
20Rev2.pdf
 
  
 
 In their paper Sigma Wireless discusses space diversity at 405 Mhz 
and
 three
 
 different combining techniques,  Selective (voting) Equal Gain 
Additive,
 and 
 
 weighted ratio combining, and the merits of each.






 
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Re: [Repeater-Builder] M6709 vs. M7716

[Tony Faiola]

 Kevin Custer wrote:
 
 Adam C. Feuer wrote:
 
  Kevin  All,
 
  I have a Micor SpectraTac Audio Squelch Card with a blown up M7716
  IC. I have the older version chip as a replacement, the M6709.
 
  Will I see a difference in squelch performance from the new chip to
  the old?  It's the only replacement that I have.
 
 
 No,  they are exactly the same just a different part number.
 
 Kevin
 
In addition, the part number for this Motorola chip is 5183977M16, and
the list price is $19.61 (Ouch) each.  Therefore, be careful when you
try to salvage one of these chips from the A  S board.

Motorola has approximately 1500 chips in stock.

Ciao, Tony, K3WX




 
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Re: [Re: [Repeater-Builder] WTB: 440 Mhz Receiver with COR]

[russ]

THE BELOW IS SOMTHING THAT A LOT OF US KNOW AND SOME WILL NOT ADMITT.
The way the mother M keeps down the desence
is to not have a lot of sencitive but the Maggiore (new) is so clean I do
not know how they do it.
I have seen what you are talking about at some of our sites. Fell had a
Micore and the receiver would shut. We lent him a maggiore on this pair and
he loves it and his users love it. He fixed up a Mater Two and that (HE
SAID) works better but the users like the sound and the range of the
Maggiore.

Very best of 73,
Russ, W3CH
Trustee W3PS/r


- Original Message - 
From: [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Monday, March 29, 2004 2:08 PM
Subject: Re: [Re: [Repeater-Builder] WTB: 440 Mhz Receiver with COR]


 A lot of Maggoire repeater bashing has been mentioned. I must admit Russ,
you
 have good things to say about Maggorie. A super secret 220 Mhz repeater
was
 just installed on the tower I am on and where did they put the antenna?
Right
 next to my 2 meter repeater antenna.  Everytime the 220 machine keys up my
2
 meter Micor repeater goes deaf.  I replaced the Micor with my old 15 year
old
 Maggoire home made repeater and it hears as well as the Micor does plus it
don't
 stop playing when the 220 machine keys up. Move over Russ and let me join
 you.






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RE: [Repeater-Builder] Duplexer Cable Legnth

[Davies, Doug A FOR:EX]

I have been having a heck of a time getting my Q202G to tune to 146.xxx.  It
was originally set up for 163.xxx and, of course, the plunger rods were cut
off to fit a cabinet.  After lengthening the rods, I still couldn't get a
proper notch. Asking around, I was told that I would have to change out the
interconnecting cables between the cans and put in ones that were the right
length electrically.  I have some pretty rudimentary test equipment to tune
this thing up so I'm wondering now if I should go ahead and replace the
cables or simply try to get the tuning as accurate as possible with the
equipment I have and leave the cables alone.  What are the group's thoughts
on this?

Doug  VA7DD 






 
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Re: [Re: [Repeater-Builder] WTB: 440 Mhz Receiver with COR]

[Fred Flowers]

If a Mastr II doesn't sound good, they don't have it set up right.  Fred KF4QZN   - Original Message - From: russ Sent: Monday, March 29, 2004 4:16 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Re: [Repeater-Builder] WTB: 440 Mhz Receiver with COR] THE BELOW IS SOMTHING THAT A LOT OF US KNOW AND SOME WILL NOT ADMITT.The way the mother "M" keeps down the desenceis to not have a lot of sencitive but the Maggiore (new) is so clean I donot know how they do it.I have seen what you are talking about at some of our sites. Fell had aMicore and the receiver would shut. We lent him a maggiore on this pair andhe loves it and his users love it. He fixed up a Mater Two and that (HESAID) works better but the users like the sound and the range of theMaggiore.Very best of 73,Russ, W3CHTrustee W3PS/r- Original Message - From: [EMAIL PROTECTED]To: Repeater-Builder@yahoogroups.comSent: Monday, March 29, 2004 2:08 PMSubject: Re: [Re: [Repeater-Builder] WTB: 440 Mhz Receiver with COR] A lot of Maggoire repeater bashing has been mentioned. I must admit Russ,you have good things to say about Maggorie. A super secret 220 Mhz repeaterwas just installed on the tower I am on and where did they put the antenna?Right next to my 2 meter repeater antenna. Everytime the 220 machine keys up my2 meter Micor repeater goes deaf. I replaced the Micor with my old 15 yearold Maggoire home made repeater and it hears as well as the Micor does plus itdon't stop playing when the 220 machine keys up. Move over Russ and let me join you. Yahoo! Groups LinksYahoo! Groups Links* To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/* 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/













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Re: [Re: [Repeater-Builder] WTB: 440 Mhz Receiver with COR]

[russ]

No they are NOT crap!
The old ones made out of a Clegg mobiles yes where true Crap. But his new
stuff is gold!
If you want to see one in a high RF area meet me in Philly.  Want to see one
hear  better then a Micor
running 110 watts? Your service monitor or mine. I have them on the air in
PA, NJ., Del, NC. I will meet any one any where.
These new Maggioe's are great. I sold off Micore and Master II's and
replaced the with 18 Maggiore's. Gee we can buy any repeater and did try a
pile off them. For what we paided for one Maggiore we could have had 4 or 5
of the Micores. We bought Maggiore for a reson. They work! You do not have
to be going to the site. Binghamton I have not seen of 4 years.  I would
rather talk on them the fix them all the time. Chester PA went for 10 years
with out a visit. Till we added two meters. I look at the sites with the
Morotola 2800 and they are alway right dead on. I have repaced a few of the
old receiver that they made years ago with some of the newer receiver on
some voteing receiver and off site receivers they work well. so get your
head out of the sand! Radio has come a long since the 70's when the Micore
and Master II came out. Lots better stuff out there on the market and I
agree there is some crap out there. But in all fairness the new Maggiore
stuff is not one of the crap repeaters.
Like a said befor I will meet any one at one of my 18 repeater sites and you
can bring your monitor I I will bring my 2800 and you can see. I will be in
Ocean City NJ this week. Removing 2 GMRS Master II that by the way are not
longer type acepted for use on part 95 GMRS or part 90 business radio and
installing a 927 repeat in the place of one and a 927 link radio where the
outher Master two is. Any way I don't need flames but when some is wrong and
takeing pot shots at a good repeater I just must speak up! So no flames un
less you want to go to a site and prove me worng. Not not do flame me. I
just meant you have no clue of how a new Maggiore works and you don't want
to see for your self! It is a wonder you have a computer. Well go back to
your black and white TV on rabbit ears and be happy how well it works. I my
self will go watch the news in DTV.

Very best of 73,
Russ, W3CH
Trustee Metro-Comm, INC
W3PS/R



- Original Message - 
From: JOHN MACKEY [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Monday, March 29, 2004 1:22 PM
Subject: Re: [Re: [Repeater-Builder] WTB: 440 Mhz Receiver with COR]


 Am I confused, or haven't we all talked about Maggoire labs equipment
before 
 said they are crap?

 russ [EMAIL PROTECTED] wrote:

  Try Maggiore Labs in West Chester PA.
  there phone number is 610-436-6051 they make a top notch reciver. Better
  then some of the older stuff for around the same price.
  Good luck and 73,
  Russ, W3CH
  Trustee W3PS
  Metro-Comm repeater network.
 
  - Original Message - 
  From: w9mwq [EMAIL PROTECTED]
  To: Repeater-Builder@yahoogroups.com
  Sent: Sunday, March 28, 2004 5:56 PM
  Subject: [Repeater-Builder] WTB: 440 Mhz Receiver with COR
 
 
   I am looking for a inexpensive 440 Mhz receiver with a COR output to
   replace the one that is with my 440 repeater.  The receiver will be
   connected to an RLC2 contoller.  Let me know what you have and
   price.  Thanks.
  
   Mathew
  
  
  
  
  
  
  
   Yahoo! Groups Links
  
  
  
  
  
  
 
 
 
 
 
 
  Yahoo! Groups Links
 
 
 
 
 
 








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Re: [Re: [Repeater-Builder] WTB: 440 Mhz Receiver with COR]

[Jim B.]

russ wrote:

 THE BELOW IS SOMTHING THAT A LOT OF US KNOW AND SOME WILL NOT ADMITT.
 The way the mother M keeps down the desence
 is to not have a lot of sencitive but the Maggiore (new) is so clean I do
 not know how they do it.
 I have seen what you are talking about at some of our sites. Fell had a
 Micore and the receiver would shut. We lent him a maggiore on this pair and
 he loves it and his users love it. He fixed up a Mater Two and that (HE
 SAID) works better but the users like the sound and the range of the
 Maggiore.
 
 Very best of 73,
 Russ, W3CH
 Trustee W3PS/r
 

This guys turning into a bit of a troll.
Maggiore's are dirty, unreliable, broad as a barn, and if I saw one at a 
site I was at, I'd be demanding it be removed. If I was the 
owner/manager of the site, I'd unplug it and tell whoever put it in to 
pick it up outa the trash bin, and don't darken my door again.

-- 
Jim Barbour
WD8CHL





 
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Re: [Repeater-Builder] Slightly off topic ...

[brent]

i belive it is 58 watts and 100 watts on the PA300
- Original Message - 
From: Neil McKie [EMAIL PROTECTED]
To: Repeater Builder Repeater-Builder@yahoogroups.com
Sent: Monday, March 29, 2004 5:26 PM
Subject: [Repeater-Builder] Slightly off topic ...


 
   I have Federal PA 300 Electronic Siren. 
 
   There are two different power output levels depending on which 
  output leads you connect to.  
 
   Does anyone know what the rated output levels are according to a 
  Specification Sheet or the service manual which I don't have? 
 
   Thank you, 
 
   Neil McKie - WA6KLA
 
 
 
 
  
 Yahoo! Groups Links
 
 
 
  
 
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RE: [Repeater-Builder] Duplexer Cable Legnth

[Matt Krick]

Are these Band pass, Band Reject? or Pass only?

Changing the cables will help alot since you are 20 MHz off. You would have an 
easier time if your cans were in the 150-155 MHz range.

But a good way to be sure is to just test one cavity by its self and see if you 
can make spec at your frequency.

I know that some times the coupling loop capacitor needs to be increased to 
make the can notch correcty.  If the cans have piston trimmer capaciors on the 
ends of the coupling loops you will need to change them for more capacitance. A 
good source for these is 2 meter GE MASTR-II ICOMs, Or you can try to solder a 
silver mica or NPO fixed capacitor across it (5 to 10 pF). If it uses plunger 
style capacitor you need to lengthen the center conductor.


-- Original Message --
From: Davies, Doug A FOR:EX [EMAIL PROTECTED]
Reply-To: Repeater-Builder@yahoogroups.com
Date:  Mon, 29 Mar 2004 13:17:35 -0800

I have been having a heck of a time getting my Q202G to tune to 146.xxx.  It
was originally set up for 163.xxx and, of course, the plunger rods were cut
off to fit a cabinet.  After lengthening the rods, I still couldn't get a
proper notch. Asking around, I was told that I would have to change out the
interconnecting cables between the cans and put in ones that were the right
length electrically.  I have some pretty rudimentary test equipment to tune
this thing up so I'm wondering now if I should go ahead and replace the
cables or simply try to get the tuning as accurate as possible with the
equipment I have and leave the cables alone.  What are the group's thoughts
on this?

Doug  VA7DD 






 
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[Repeater-Builder] Slightly off topic ...

[Neil McKie]

  I have Federal PA 300 Electronic Siren. 

  There are two different power output levels depending on which 
 output leads you connect to.  

  Does anyone know what the rated output levels are according to a 
 Specification Sheet or the service manual which I don't have? 

  Thank you, 

  Neil McKie - WA6KLA




 
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