Re: [Repeater-Builder] duplexer tuning uk please

- From: phillmobile To: Repeater-Builder@yahoogroups.com Sent: Sunday, January 03, 2010 17 08 Subject: [Repeater-Builder] duplexer tuning uk please hello looking for someone to tune some duplexers for me couple of vhf and a uhf will pay what ever i need to and cover postage

[Repeater-Builder] duplexer tuning uk please

hello looking for someone to tune some duplexers for me couple of vhf and a uhf will pay what ever i need to and cover postage costs for return, licenced supplier and will send copys of licences if required thank you phill bridlington east yorkshire

[Repeater-Builder] Duplexer tuning question w/service monitor

Hi Everyone, I was helping a friend tune a Motorola T1502 duplexer yesterday, and got the following readings using a service monitor and GM300 receiver. I just want to confirm that what I did looks reasonable as I did tweak one of the band-reject loops since observing a low reading. The repeate

RE: [Repeater-Builder] Duplexer Tuning HELP

: [Repeater-Builder] Duplexer Tuning HELP Hi Michael. Would Recommend Ron Wright N9EE in Tampa Who owns an 2 meter Repeater in Tampa(very Knowligable. Wesley AB8KD - Original Message - From: Michael Ryan To: Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.

Re: [Repeater-Builder] Duplexer Tuning HELP

Hi Michael. Would Recommend Ron Wright N9EE in Tampa Who owns an 2 meter Repeater in Tampa(very Knowligable. Wesley AB8KD - Original Message - From: Michael Ryan To: Repeater-Builder@yahoogroups.com Sent: Friday, July 25, 2008 3:42 PM Subject: [Repeater-Builder] Duplexer

[Repeater-Builder] Duplexer Tuning Help

Hello RBs.. I am looking for someone in the Tampa Bay or FLA West Coast area that can evaluate and tune a set of Wacom 220 duplexers. Anyone interested or KNOW anyone with the right gear to do this? Thanks... - Mike (941) 376-6453

[Repeater-Builder] Duplexer Tuning HELP

. I wonder if anyone in the TAMPA area or even anywhere on the west coast of Florida, could help with tuning a 220 duplexer? I'd like a real tune up rather than some backyard methods that were suggested ! All kiddin' aside I suppose you pay for what you get an

Re: [Repeater-Builder] Duplexer Tuning / Desense

<[EMAIL PROTECTED]> wrote: From: Ralph Mowery <[EMAIL PROTECTED]> Subject: Re: [Repeater-Builder] Duplexer Tuning / Desense To: Repeater-Builder@yahoogroups.com Date: Saturday, July 19, 2008, 9:05 AM Depending on the sensitivity and power level, a 4 cavity duplexer is just barley enou

Re: [Repeater-Builder] Duplexer Tuning / Desense

Mike Besemer (WM4B) wrote: > My club has been offered a sweet deal on a repeater site (free rent, free > electricity, free antenna and feedline) and I'm trying to hurry to get a > repeater on the air. We have a Kendecom Mark IV which was hit by lightning > (through the phone line, not the antenna)

RE: [Repeater-Builder] Duplexer Tuning / Desense

a 600 KHz spacing on 2 meters. --- On Fri, 7/18/08, Mike Besemer (WM4B) <[EMAIL PROTECTED]> wrote: From: Mike Besemer (WM4B) <[EMAIL PROTECTED]> Subject: [Repeater-Builder] Duplexer Tuning / Desense To: Repeater-Builder@yahoogroups.com Date: Friday, July 18, 2008, 10:33 PM most from

RE: [Repeater-Builder] Duplexer Tuning / Desense

8 10:34 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Duplexer Tuning / Desense My club has been offered a sweet deal on a repeater site (free rent, free electricity, free antenna and feedline) and I'm trying to hurry to get a repeater on the air. We have a Kendecom Ma

Re: [Repeater-Builder] Duplexer Tuning / Desense

(WM4B) <[EMAIL PROTECTED]> wrote: From: Mike Besemer (WM4B) <[EMAIL PROTECTED]> Subject: [Repeater-Builder] Duplexer Tuning / Desense To: Repeater-Builder@yahoogroups.com Date: Friday, July 18, 2008, 10:33 PM most from your Repeater System’, and the one thing I need to do yet is check

RE: [Repeater-Builder] Duplexer Tuning / Desense

ups.com [mailto:[EMAIL PROTECTED] On Behalf Of Jim Brown Sent: Saturday, July 19, 2008 12:27 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Duplexer Tuning / Desense Mike, that RG-8X is the first thing I would get rid of. It is typically only %95 covered in shield braid,

Re: [Repeater-Builder] Duplexer Tuning / Desense

duplexer. 73 - Jim  W5ZIT --- On Fri, 7/18/08, Mike Besemer (WM4B) <[EMAIL PROTECTED]> wrote: From: Mike Besemer (WM4B) <[EMAIL PROTECTED]> Subject: [Repeater-Builder] Duplexer Tuning / Desense To: Repeater-Builder@yahoogroups.com Date: Friday, July 18, 2

[Repeater-Builder] Duplexer Tuning / Desense

My club has been offered a sweet deal on a repeater site (free rent, free electricity, free antenna and feedline) and I'm trying to hurry to get a repeater on the air. We have a Kendecom Mark IV which was hit by lightning (through the phone line, not the antenna) which I've resurrected and interfa

Re: [Repeater-Builder] Duplexer tuning with an Oscilloscope

t: Re: [Repeater-Builder] Duplexer tuning with an Oscilloscope Hi Darrell, I never done it, and will like to try it. Can you send me a sketch of the setup, with a brief explanation of your procedure for accomplishing this? Will appreciate it very much Darrell. v44kai

Re: [Repeater-Builder] Duplexer tuning with an Oscilloscope

ROTECTED]> To: Sent: Sunday, June 22, 2008 12:06 AM Subject: [Repeater-Builder] Duplexer tuning with an Oscilloscope > Hi All, > > Just curious if anyone here has used a wide-band oscilloscope (along > with a signal source, of course) for duplexer and/or filter tuning? > > I

Re: [Repeater-Builder] Duplexer tuning with an Oscilloscope

>To: Repeater-Builder@yahoogroups.com >Subject: [Repeater-Builder] Duplexer tuning with an Oscilloscope > >Hi All, > >Just curious if anyone here has used a wide-band oscilloscope (along >with a signal source, of course) for duplexer and/or filter tuning? > >I use a

[Repeater-Builder] Duplexer tuning with an Oscilloscope

Hi All, Just curious if anyone here has used a wide-band oscilloscope (along with a signal source, of course) for duplexer and/or filter tuning? I use an older Tektronix 7904 500mhz scope along with an HP 8640B Signal Generator and it works great. I can't really measure filter response, but I

Re: [Repeater-Builder] Duplexer tuning - sanity check

On Jun 2, 2007, at 5:43 PM, Gary Schafer wrote: > Mostly correct but an isolator could be thought of as a device to > "clean up > a transmitter" too. An isolator provides a flat 50 ohm load to the > transmitter no matter what kind of load the antenna or duplexer may > present. > Sometimes tra

RE: [Repeater-Builder] Duplexer tuning - sanity check

> -Original Message- > From: Repeater-Builder@yahoogroups.com [mailto:Repeater- > [EMAIL PROTECTED] On Behalf Of Nate Duehr > Sent: Saturday, June 02, 2007 3:03 AM > To: Repeater-Builder@yahoogroups.com > Subject: Re: [Repeater-Builder] Duplexer tuning - sanity check

Re: [Repeater-Builder] Duplexer tuning - sanity check

On May 31, 2007, at 7:13 PM, Bob M. wrote: > The duplexers on UHF are typically set for 5 MHz > spacing, although closer spacing is often available. > The purpose of the duplexer is to allow the receiver > and transmitter to share one antenna. They offer very > little filtering of other nearby si

Re: [Repeater-Builder] Duplexer tuning - sanity check

At 5/31/2007 18:16, you wrote: >2d question only. > >If you have adjacent channel repeaters close to you, something is wrong >with your frequency coordinators. Depends on what you call "close". We've successfully coordinated/operated 2 repeaters 15 kHz & only a few miles apart with no interferen

Re: [Repeater-Builder] Duplexer tuning - sanity check

2d question only. If you have adjacent channel repeaters close to you, something is wrong with your frequency coordinators. 2 mtrs has enough trouble with 600 khz spacing, to expect 16 khz is ludicrous. The only solution for adjacent channel repeaters is distance. -- 73, Larry, W1HJF [EMAIL

RE: [Repeater-Builder] Duplexer tuning - sanity check

uilder@yahoogroups.com [mailto:Repeater- > [EMAIL PROTECTED] On Behalf Of Bob M. > Sent: Thursday, May 31, 2007 8:13 PM > To: Repeater-Builder@yahoogroups.com > Subject: Re: [Repeater-Builder] Duplexer tuning - sanity check > > Some duplexers pass the desired frequency, lose > somet

Re: [Repeater-Builder] Duplexer tuning - sanity check

Some duplexers pass the desired frequency, lose something on each side, but then pass stuff from DC to over 1GHz as if it's not even in the circuit. My Celwave 526 operates that way. The bandpass tuning is rather broad and serves to match the impedance more than effect the bandpass of the signal. T

[Repeater-Builder] Duplexer tuning - sanity check

I'm tuning up a cavity-type duplexer for a 70cm repeater, and in the process, I showed my results to a fellow ham. He asked a couple questions that cause me to think; so I decided to ask the experts... FIRST QUESTION TOPIC: For reference, my primary cavities were made by Tx-Rx Systems, and have

RE: [Repeater-Builder] Duplexer tuning with MINIMUM tools

My first set of 220Mhz duplexers (homebrew) were tuned up with an HT and a box with a 50 ohm resistor, diode, and capacitor in it. I fed the rectified signal voltage to a oscilloscope. I then tuned for either minimum or maximum voltage on the scope, depending upon if I was tuning the notch or

Re: [Repeater-Builder] Duplexer tuning with MINIMUM tools

W > Sent: Thursday, December 22, 2005 10:29 PM > To: Repeater-Builder@yahoogroups.com > Subject: Re: [Repeater-Builder] Duplexer tuning with MINIMUM tools > > I mean in emergency situation, like in natural > disaster. > > What the minimal tools I have to have to be able t

Re: [Repeater-Builder] Duplexer tuning with MINIMUM tools

H Minimal tools Rf Voltmeter -w- 50 ohm termination, signal generator -w- pad, 50 ohm dummy load for unused port. Mike N8RQU --- Reza PWW <[EMAIL PROTECTED]> wrote: > I mean in emergency situation, like in natural > disaster. > > What the minimal tools I have

Re: RE: [Repeater-Builder] Duplexer tuning with MINIMUM tools

I have done the same also and it works well enough to get on the air quickly. Roger W5RD >From: "Steve Bosshard (NU5D)" <[EMAIL PROTECTED]> >Date: Fri Dec 23 08:38:52 CST 2005 >To: Repeater-Builder@yahoogroups.com >Subject: RE: [Repeater-Builder] Duplexer tuning with

RE: [Repeater-Builder] Duplexer tuning with MINIMUM tools

@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Reza PWW Sent: Thursday, December 22, 2005 10:29 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Duplexer tuning with MINIMUM tools I mean in emergency situation, like in natural disaster. What the minimal tools I have to

Re: [Repeater-Builder] Duplexer tuning with MINIMUM tools

I mean in emergency situation, like in natural disaster. What the minimal tools I have to have to be able to adjust the duplexer and how? reza --- Kris Kirby <[EMAIL PROTECTED]> wrote: > On Thu, 22 Dec 2005, Reza PWW wrote: > > Can anybody can advise me for tunning duplexer > with minimum tool

Re: [Repeater-Builder] Duplexer tuning with MINIMUM tools

At 12/22/2005 20:00, you wrote: >On Thu, 22 Dec 2005, Reza PWW wrote: > > Can anybody can advise me for tunning duplexer with minimum tools? For > > example case: I have to change TX-RX frequensi in some place, where I > > only have SWR and some HT and volt meter? > >A case of beer, an SWR meter, a

Re: [Repeater-Builder] Duplexer tuning with MINIMUM tools

On Thu, 22 Dec 2005, Reza PWW wrote: > Can anybody can advise me for tunning duplexer with minimum tools? For > example case: I have to change TX-RX frequensi in some place, where I > only have SWR and some HT and volt meter? A case of beer, an SWR meter, and a radio. Tune for minimum SWR. The c

[Repeater-Builder] Duplexer tuning with MINIMUM tools

Can anybody can advise me for tunning duplexer with minimum tools? For example case: I have to change TX-RX frequensi in some place, where I only have SWR and some HT and volt meter? thanks reza __ Yahoo! for Good - Make a difference

[Repeater-Builder] Duplexer tuning info from Eagle

Eric/Skipp/Jeff and other guru's.Thank you for the great information and suggestions on duplexer tuning. I downloaded 'Duplexer Tuning Using the EAGLE Return Loss Bridge' instruction sheet and find it very informative. Maybe this old dog can learn some new tricks. Nice Repeater-Builder

Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge

mon WB6FLY Quoting "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>: > Who makes a Return Loss Bridge? Any idea of the approximate cost? > LJ > > > -Original Message- >> From: Eric Lemmon <[EMAIL PROTECTED]> >> Sent: Dec 21, 2005 7:42 AM >> To: R

Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge

ED]> >To: >Sent: 21 December, 2005 08:20 >Subject: Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge > > >Who makes a Return Loss Bridge? Any idea of the approximate cost? >LJ > > >-Original Message- > >From: Eric Lemmon <[EMAIL PROTECTED

Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge

gt;-Original Message- > >From: Eric Lemmon <[EMAIL PROTECTED]> > >Sent: Dec 21, 2005 7:42 AM > >To: Repeater-Builder@yahoogroups.com > >Subject: Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge > > > >Gary, > > > >A return

Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge

005 09:26 Subject: RE: [Repeater-Builder] Duplexer tuning with Return Loss Bridge The Bird is a directional wattmeter. It's not a return loss bridge (it's not a bridge at all). Yes, you can compute a spot-frequency measurement of return loss that way, that doesn't help you with swept

RE: [Repeater-Builder] Duplexer tuning with Return Loss Bridge

> -Original Message- > From: Repeater-Builder@yahoogroups.com > [mailto:[EMAIL PROTECTED] On Behalf Of Dick > Sent: Wednesday, December 21, 2005 12:01 PM > To: Repeater-Builder@yahoogroups.com > Subject: Re: [Repeater-Builder] Duplexer tuning with Return > Loss Bridge &

Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge

At 12/21/2005 01:28 AM, you wrote: >I just tuned a set of 641's with my IFR1500, a couple of 3dB pads, and a >dummy load for the unused port while tuning it up. That's all you should >need to get them tuned. You can also use the RL bridge to optimize the 50 >ohm match. See this article: >http

Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge

8:46 Subject: RE: [Repeater-Builder] Duplexer tuning with Return Loss Bridge > The Bird Model 43 is a typical RLB. Oh really???!??!? The Eagle return loss bridges are a good value for the buck. www.eagle-1st.com. They have a whitepaper on tuning duplexers too. http://www.eagle-1st.com/notes

RE: [Repeater-Builder] Duplexer tuning with Return Loss Bridge

> The Bird Model 43 is a typical RLB. Oh really???!??!? The Eagle return loss bridges are a good value for the buck. www.eagle-1st.com. They have a whitepaper on tuning duplexers too. http://www.eagle-1st.com/notes/duplex/body.htm I believe IFR (now Aeroflex) sells (or at least sold) the Eagl

[Repeater-Builder] Duplexer tuning

Here's a complete procedure right here on the group's web site. 73, Dick http://www.repeater-builder.com/ge/duptuning.html Yahoo! 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

Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge

W1NMZ   - Original Message - From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Cc: [EMAIL PROTECTED] Sent: 20 December, 2005 21:48 Subject: [Repeater-Builder] Duplexer tuning with Return Loss Bridge   Gentlemen, Will be starting a new science project setting up Wacom 641

Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge

The Bird Model 43 is a typical RLB. You can also use a network analyzer. Dick - Original Message - From: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> To: Sent: 21 December, 2005 08:20 Subject: Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge Who makes a Re

Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge

Who makes a Return Loss Bridge? Any idea of the approximate cost? LJ -Original Message- >From: Eric Lemmon <[EMAIL PROTECTED]> >Sent: Dec 21, 2005 7:42 AM >To: Repeater-Builder@yahoogroups.com >Subject: Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge &g

Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge

iginal Message - From: Eric Lemmon To: Repeater-Builder@yahoogroups.com Sent: Wednesday, December 21, 2005 9:42 AM Subject: Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge Gary,A return loss bridge (RLB) is an extremely useful tool for tuning the pass function of a

Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge

Gary, A return loss bridge (RLB) is an extremely useful tool for tuning the pass function of a BpBr duplexer. That's because the bandpass response of each cavity in a BpBr duplexer is very subtle- nothing like the peak you will see in a bandpass-only cavity. Even when three BpBr cavities are

Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge

I just tuned a set of 641's with my IFR1500, a couple of 3dB pads, and a dummy load for the unused port while tuning it up. That's all you should need to get them tuned. You can also use the RL bridge to optimize the 50 ohm match. See this article: http://www.eagle-1st.com/notes/duplex/body.h

[Repeater-Builder] Duplexer tuning with Return Loss Bridge

  Gentlemen, Will be starting a new science project setting up Wacom 641 on 2 meters. Have a Rohde & Schwarz monitor receiver with S meter, DB pads, dummy loads etc. Plus an IFR 1500. But I see comments on a unit called a 'return loss bridge' for the IFR. How important is this return l

Re: [Repeater-Builder] duplexer tuning question

At 4/22/2005 08:03 AM, you wrote: >At 09:58 AM 4/22/2005 -0500, you wrote: > > > >At 07:22 AM 4/22/2005, Mathew Quaife wrote: > >>If these are like my TX/RX duplexers, the slighest movement of the > >>tuning rods makes a huge difference, especially on the tx > >>side. retune would be a good idea

Re: [Repeater-Builder] duplexer tuning question

At 4/21/2005 07:31 PM, you wrote: >Doug, > >Retune. The difference is small enough that the jumper cables will not >have to >be altered. > >73, Eric Lemmon WB6FLY I'm going to go against the flow here & say no, don't retune. Instead, check to see where the notches are exactly. If there is a

Re: [Repeater-Builder] duplexer tuning question

Ok, I have some theroies, but I need confirmation from someone that is like good with math and formulas and stuff as you know I flunked my high school pre-algebra class. Anyway I want to make a 2 meter duplexer economy style as the person who is building the repeater cannot afford a trip to the

Re: [Repeater-Builder] duplexer tuning question

Yes I agree on that one, I locked them down and one of them moved on me, check each one indivually.    Mathew Dave VanHorn <[EMAIL PROTECTED]> wrote: At 07:22 AM 4/22/2005, Mathew Quaife wrote:>If these are like my TX/RX duplexers, the slighest movement of the >tuning rods makes a huge differen

Re: [Repeater-Builder] duplexer tuning question

> ><---Is it even possible to tune within a +/- 15 Khz window? OK, maybe >possible but practical? Sure. Especially on the pass. I set my analyzer for 2dB/Div, and walk them for the sharpest, highest peak, about 1/8 turn makes a very visible difference. The notch is wider, and harder to see,

Re: [Repeater-Builder] duplexer tuning question

At 09:58 AM 4/22/2005 -0500, you wrote: > >At 07:22 AM 4/22/2005, Mathew Quaife wrote: >>If these are like my TX/RX duplexers, the slighest movement of the >>tuning rods makes a huge difference, especially on the tx >>side. retune would be a good idea. Take them slow, they are fun to >>tune.

Re: [Repeater-Builder] duplexer tuning question

At 07:22 AM 4/22/2005, Mathew Quaife wrote: >If these are like my TX/RX duplexers, the slighest movement of the >tuning rods makes a huge difference, especially on the tx >side. retune would be a good idea. Take them slow, they are fun to >tune. Enjoy! Indeed.. Re-check them after you tig

Re: [Repeater-Builder] duplexer tuning question

If these are like my TX/RX duplexers, the slighest movement of the tuning rods makes a huge difference, especially on the tx side.  retune would be a good idea.  Take them slow, they are fun to tune.  Enjoy!   Mathew doug <[EMAIL PROTECTED]> wrote: ok guys - a question... and i am sure i'll get

Re: [Repeater-Builder] duplexer tuning question

I would retune them, but only if you have the right test equipment! I would first make a measument of the Duplexer before you change anything. Good luck Dick WB6DNX ___ Speed up your surfing with Juno SpeedBand. Now includes pop-up

Re: [Repeater-Builder] duplexer tuning question

Doug, Retune. The difference is small enough that the jumper cables will not have to be altered. 73, Eric Lemmon WB6FLY doug wrote: > ok guys - a question... and i am sure i'll get both sides of this one. > > i have a set of factory tuned tx/rx cans for a 2m machine (they are new, > and not c

Re: [Repeater-Builder] duplexer tuning question

Need to re-tune them would be my vote.   Tom W9SRVdoug <[EMAIL PROTECTED]> wrote: ok guys - a question... and i am sure i'll get both sides of this one.i have a set of factory tuned tx/rx cans for a 2m machine (they are new, and not cheap)the frequency that the duplexers are tuned to could not b

Re: [Repeater-Builder] duplexer tuning question

>duplexer tuned to: 147.210 / 147.810freq to be used 147.195 / 147.795 > >SO > >Question is.. RETUNE...or leave them alone... I'd retune them. It's a PITA, but it's worth it, IMHO. They are VERY narrow filters, and being a little bit off is a LOT. You go fro

[Repeater-Builder] duplexer tuning question

ok guys - a question... and i am sure i'll get both sides of this one. i have a set of factory tuned tx/rx cans for a 2m machine (they are new, and not cheap) the frequency that the duplexers are tuned to could not be coordinated successfully. the freq i could get is only 15khz LOWER than t

Re: [Repeater-Builder] duplexer tuning - help

At 07:23 PM 4/15/2005 -0700, you wrote: >The problem with the stability is that most of these were constructed >using a Galvinised steel rod to set the tuning correct? I solved that problem by putting some "slop" into the connection between the rod and the plunger. It's kind of hard to explain,

Re: [Repeater-Builder] duplexer tuning - help

That would be the best, but you have avalibility and cost issues. On 4/16/05, Per Molund <[EMAIL PROTECTED]> wrote: > > Or maybe Invar alloy for maximum temperature stability? > > ---per > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Re

Re: [Repeater-Builder] duplexer tuning - help

Or maybe Invar alloy for maximum temperature stability? ---per At 04:23 16.04.2005, you wrote: >The problem with the stability is that most of these were constructed >using a Galvinised steel rod to set the tuning correct? Try a >replacing it with a more similar metal to copper like brass or

Re: [Repeater-Builder] duplexer tuning - help

The problem with the stability is that most of these were constructed using a Galvinised steel rod to set the tuning correct? Try a replacing it with a more similar metal to copper like brass or copper threaded rod if you can find it. or a plastic rod that has good tempreture charecteristics. Wh

Re: [Repeater-Builder] duplexer tuning - help

I had a set of "sewer pipe" duplexers like what you are describing for 220Mhz years ago. I built a wood box, put a small light bulb and a thermostat inside and set it to about 90 degrees. These kept them fairly stable year-round. 73, Joe, k1ike At 07:44 AM 4/15/2005 -0600, you wrote: >Not i

RE: [Repeater-Builder] duplexer tuning - help

eater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Paul Sent: Thursday, April 14, 2005 10:33 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] duplexer tuning - help I think we located the old repeater and duplexers that used to be here in our little "one hors

Re: [Repeater-Builder] duplexer tuning - help

>anyone who could help please e-mail me >thanks >Paul (n9fco) How far are you from Muncie? I've got the gear. Yahoo! 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:

Re: [Repeater-Builder] duplexer tuning - help

AIL PROTECTED]> To: Sent: Thursday, April 14, 2005 9:33 PM Subject: [Repeater-Builder] duplexer tuning - help > > > > I think we located the old repeater and duplexers that used to be > here in our little "one horse town" in northern indiana but I am > sure that afte

[Repeater-Builder] duplexer tuning - help

I think we located the old repeater and duplexers that used to be here in our little "one horse town" in northern indiana but I am sure that after sitting in storage ,being moved from place to place and just years of neglect they will probably need to be cleaned and retuned is there anyone

Re: [Repeater-Builder] duplexer tuning

At 06:59 PM 2/11/2004, "Danny Allen" <[EMAIL PROTECTED]> wrote: Does anyone know of someone in the Marietta,Ga area that can reprogram a DB-4072 duplexer? Danny, What frequencies are you moving it from/to?  I may be able to help you if you're not in too big of a hurry. (I'm 20 miles South of y