RE: [Repeater-Builder] Notch duplexer dumb question (while on the subject...)

Preston, I doubt it. At worst, the duplexer will have excessive insertion loss and be a poor performer, but most properly-designed repeaters or transceivers are protected against damage from mismatched loads. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups

Re: [Repeater-Builder] R-100 repeater

Hello again John,If you will send me your mailing address I will take the R-100 without the controller.As soon as I get your info I will send you a postal money order for $145.00 Don N5SVK - Original Message - From: Maire-Radios To: Repeater-Builder@yahoogroups.com Sent: Tues

RE: [Repeater-Builder] Notch duplexer dumb question (while on the subject...)

While on the "mobile" duplexer subject. Is it possible to destroy a reject, or a Bp/Br for that matter, by reversing the proper TX/RX connections? I thought someone said that reversing the connections on a reject duplexer might damage it. I am guessing it might really fry the transmitter. Presto

RE: [Repeater-Builder] crystal/channel element compensation..

At 7/10/2007 20:42, you wrote: >Bravo to you for doing the right thing! Far too many people these days are >in a rush to get a repeater on the air right away, and figure that it's okay >to bypass the compensation steps. I guess they have the money to go back >and fix the problem they created, lat

RE: [Repeater-Builder] Notch duplexer dumb question

This is a pretty good visual aid: http://prestonmoore.com/images/duplexed.jpg Take the Internet to Go: Yahoo!Go puts the Internet in your pocket: mail, news, photos & more. http://mobile.yahoo.com/go?r

Re: [Repeater-Builder] crystal/channel element compensation..

The last time I checked with Bomar, they put a crystal into the element, ensured that it worked and modulated correctly then send it out the door. It never went through temperature compensation. They may have changed. 73 Glenn WB4UIV At 05:55 PM 07/10/07, you wrote: >OK, I usually use Internat

RE: [Repeater-Builder] crystal/channel element compensation..

Bravo to you for doing the right thing! Far too many people these days are in a rush to get a repeater on the air right away, and figure that it's okay to bypass the compensation steps. I guess they have the money to go back and fix the problem they created, later and at considerably greater cost

RE: [Repeater-Builder] Notch duplexer dumb question

George, A good question is never a dumb one. Although it may not be perfectly clear to everyone, Celwave marks their duplexers with "LOW" and "HIGH" to indicate the frequency that it will PASS. Thus, in a GMRS repeater system, the 462 MHz output of the transmitter will connect to the "LOW" conne

Re: [Repeater-Builder] crystal/channel element compensation..

>> OK, I usually use International, but how is Bomar doing these days, >> quality-wise? ICM seems to be pretty pricey these days. Bomar says >> $35 >> for re-crystalling a channel element. (I assume that means >> compensating as well). Thoughts welcome.. >> >> na6df dave Frankly, looking at the

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

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

Re: [Repeater-Builder] crystal/channel element compensation..

My last two dealings (within last two years) with Bomar have me skeptical. One GE ICOM had to go back because it was drifting all over the place and I did pay for the temperature compensation. I told them to take their time when I returned it as I wanted it done right. This was a UHF 2C. They ha

Re: [Repeater-Builder] R-100 repeater

well the first R-100 is on 462.725 DPL 125$145.00 and covers shipping in the 48 states. - Original Message - From: Don Hejl To: Repeater-Builder@yahoogroups.com Sent: Tuesday, July 10, 2007 7:51 PM Subject: Re: [Repeater-Builder] R-100 repeater Hi John, what are y

Re: [Repeater-Builder] R-100 repeater

well the R-100 DPL unit $145.00 also covers shipping in the US 48 states. current 462.725 DPL 125 - Original Message - From: N2PDQ To: Repeater-Builder@yahoogroups.com Sent: Tuesday, July 10, 2007 7:48 PM Subject: Re: [Repeater-Builder] R-100 repeater what are you

Re: [Repeater-Builder] Re: Hello...

Do an ebay search for "ge mastr". You will find a large number of GE Base stations at the present time that can be operated as repeaters listed. 73 - Jim W5ZIT -Original Message- From: lou_c1357 <[EMAIL PROTECTED]> To: Repeater-Builder@yahoogroups.com Sent: Tue, 10 Jul 2007 6:43 am S

Re: [Repeater-Builder] R-100 repeater

what are you asking for the one without the controller? Dirk - Original Message - From: Maire-Radios To: [EMAIL PROTECTED] ; [EMAIL PROTECTED] ; Repeater-Builder@yahoogroups.com Sent: Tuesday, July 10, 2007 5:25 PM Subject: [Repeater-Builder] R-100 repeater Still have the

Re: [Repeater-Builder] R-100 repeater

Hi John, what are you asking for the R-100?I have some local guys talking about a GMRS repeater.If they do decide to do it the R-100 should do the trick. Thanks Don N5SVK - Original Message - From: Maire-Radios To: [EMAIL PROTECTED] ; [EMAIL PROTECTED] ; Repeater-Builder@yahoogro

[Repeater-Builder] R-100 repeater

Still have the R-100 for sale DPL model and also a 2nd R-100 with a Zetron 37 tone panel on it, so it will do 2 PL tones and ID. thanks John

Re: [Repeater-Builder] crystal/channel element compensation..

Do NOT assume anything. Always ask. ICM gets about $50 to make a new crystal, install it in your channel element, and do the full compensation on it. A friend sent in two elements and got them back all done in about 2 weeks last month. Hard to beat that kind of service. And of course they worked f

Re: [Repeater-Builder] crystal/channel element compensation..

years ago we switched from ICM to BOMAR and never had any problems. - Original Message - From: na6df To: Repeater-Builder@yahoogroups.com Sent: Tuesday, July 10, 2007 6:55 PM Subject: [Repeater-Builder] crystal/channel element compensation.. OK, I usually use Internatio

[Repeater-Builder] crystal/channel element compensation..

OK, I usually use International, but how is Bomar doing these days, quality-wise? ICM seems to be pretty pricey these days. Bomar says $35 for re-crystalling a channel element. (I assume that means compensating as well). Thoughts welcome.. na6df dave

Re: [Repeater-Builder] GE MASTR II and RC-1000V

Vern, One question. What do you mean "hard time kicking into transmit mode"??? Are you refering to having to give strong signal into the repeater or long key into the repeater to bring up??? The RC-1000V has a anti-kerchunk filter that requires a time delay before it keys the repeater. This

Re: [Repeater-Builder] AP4800 controller processor

Hi Joel, >I thought that may be the other way out, but, know nothing about programming proms nor have a programmer, nor anyone in my country to do such, do you know someone capable off such, Bob? any help will be appreciated. Programming the micro isn't as big of a problem as locat

Re: [Repeater-Builder] Motorola Pagers for telemetry

Hmmm, if it is a password issue that can probably be got around by getting directly into the micro, the only question is will it be worth it? I teach micro-controller at college so that should not be a problem (maybe even a student project :-) ) Any info you have will be appreciated I is the

RE: [Repeater-Builder] Notch duplexer dumb question

On some it does matter. You can not reverse the high and low and still have minimum loss for the pass frequency wanted. The notch is usually not symmetrical and it will have more loss on one side than on the other. This problem is run into sometimes when trying to move one of those duplexers a

Re: [Repeater-Builder] AP4800 controller processor

Hi Bob, I thought that may be the other way out, but, know nothing about programming proms nor have a programmer, nor anyone in my country to do such, do you know someone capable off such, Bob? any help will be appreciated. v44kai.Joel. - Original Message - From: [EMAIL PROT

Re: [Repeater-Builder] Re Mitrek Icoms

At 12:45 PM 10/07/2007, you wrote: >The tuning procedure can be found at >http://www.repeater-builder.com/mitrek/mitrek-channel-elements.html > >but is basically, plug in the element & adjust the coil for maximum >local oscill

Re: [Repeater-Builder] AP4800 controller processor

Hi Joel, The AP4800 is a 1994-era controller that used an Intel 8748 or 8749 microprocessor. Since the controller's operating system was stored in the processor's internal memory, you'll either have to find a programmed processor or get a blank one and have it programmed by someone who h

Re: [Repeater-Builder] Re Mitrek Icoms

The tuning procedure can be found at http://www.repeater-builder.com/mitrek/mitrek-channel-elements.html but is basically, plug in the element & adjust the coil for maximum local oscillator injection (test set position 6) George, KA3HSW / WQGJ413 -Original Message- >From: Doug <[EMAI

Re: [Repeater-Builder] Notch duplexer dumb question

Thanks. That's what I suspected, but I wanted to be sure... George, KA3HSW / WQGJ413 -Original Message- >From: Ron Wright <[EMAIL PROTECTED]> >Sent: Jul 10, 2007 9:33 AM >To: Repeater-Builder@yahoogroups.com >Subject: Re: [Repeater-Builder] Notch duplexer dumb question > >George, > >O

[Repeater-Builder] Re Mitrek Icoms

I have been searching for the schematics for the KXN1086A and the KXN1088A mitrek icoms to no avail. I believe they are on the net somewhere. Also, there was a procedure to tune the side mounted inductor on the receive icom. I thought I had it printed but can't seem to locate it. When comparing tw

[Repeater-Builder] AP4800 controller processor

Hi folks, For a very long time, I've been looking for the Micro processor for the AP4800 repeater controller. Originally I bought it from John Bell, before he took ill, and sold the business. The chip got hit by lightening, I still have the old one somewhere at home. I will really like to ge

[Repeater-Builder] GE MASTR II and RC-1000V

I purchased a GE MASTR II with an RC-1000V controller and I am having a problem with it. When I power it on it transmits the ID and seems to be functioning like it should. However once on it has a hard time kicking into transmit mode. I think that it may be that the radio is not breaking sque

Re: [Repeater-Builder] Re: Interference and t-1504 questions

Can you see if you can find your drawings on the loops? need to make up a couple. Thanks!! Tom W9SRV skipp025 <[EMAIL PROTECTED]> wrote: Hi Tom, The bp loops are pretty much just an SO-239 and the matching metal loop if you wanted to build some. I probably have diagram'd ou

Re: [Repeater-Builder] Motorola Pagers for telemetry

You need to check the receiver board to see what band it is on as the labels on the case may be totally inaccurate... the receiver part number will have a letter combination in it to determine the range. NRF is 900 mhz NRE is uhf NRD is vhf There are several bandsplits in VHF and u

[Repeater-Builder] FS: UHF Deltas - Chassis Only

Hi Guys, For those who missed them the first time around, I just acquired a bunch more of these chassis. They are UHF GE Deltas in the two low split ranges. >From the Hall-Electronics site: Wide Band 16 Channel Capacity with Channel Guard, NO UHS 403- 423 50W 5 PPM N3A133 N3RR2W050TB and

Re: [Repeater-Builder] Notch duplexer dumb question

I actually have seen those mobile duplexors labeled both ways, but commonly the labeling refers to what is connected. "Low" would be your 462 freq pass and would be tuned to reject 467. Most of those UHF mobile notch duplexors fairly broad banded and probably will not matter as long as YOU know h

Re: [Repeater-Builder] seperation between 2 440 antenna's

Refer to the charts here for your answer. http://www.repeater-builder.com/antenna/separation.html Dan N8DJP 3. seperation between 2 440 antenna's Posted by: "JOHN KIHL" [EMAIL PROTECTED] johnkihl Date: Mon Jul 9, 2007 6:58 am ((PDT)) Good Afternoon, We are putting up a 440 r

[Repeater-Builder] WTT for 6M Maxtrac

I would like to find a clean 16 or 32 channel Maxtrac, 40 to 50 Mc split for 6M ham use. Power not too important, but prefer unmodified (would like to do it myself). I have a couple of 800 Mc Maxtracs (good 900 repeater receivers), lots of spare MSF5000 parts (boards, power supplies, 800 RF tray (C

Re: [Repeater-Builder] Notch duplexer dumb question

George, One other comment. The lo is for the lo passing freq and hi is the hi passing freq with the notch tuned for the other; on lo side tune for notch of hi freq. 73, ron, n9ee/r >From: George Henry <[EMAIL PROTECTED]> >Date: 2007/07/10 Tue AM 08:56:16 CDT >To: repeater-builder@yahoogroup

[Repeater-Builder] Re: Hello...

All, Thanks for the comments... Looks like I have plenty to research and keep me busy for a while. I notice alot of people here use converted comercial radios for repeaters. How available are these?? A quick search on e-bay did not show a large number of hits... but maybe the availability is

Re: [Repeater-Builder] Notch duplexer dumb question

It is the pass frequency. - Original Message - From: George Henry To: repeater-builder@yahoogroups.com Sent: Tuesday, July 10, 2007 8:56 AM Subject: [Repeater-Builder] Notch duplexer dumb question I have a Motorola TDN7407A notch duplexer (in reality, a Motorola-branded C

Re: [Repeater-Builder] Notch duplexer dumb question

George, I believe this is one of the 6 cavity mobile duplexers. If so then there is a notch only tuning and the bandpass is wide with no adjustment. I've used these and they work very well. I always tuned the lo for the lo freq and hi for hi no matter if hi/lo was rx or tx. 73, ron, n9ee/r

[Repeater-Builder] Notch duplexer dumb question

I have a Motorola TDN7407A notch duplexer (in reality, a Motorola-branded Celwave 633-6A-2N) that I want to use for a low-power GMRS repeater. The ports are labeled HI and LO now for the dumb question, do those labelings refer to the NOTCH frequency or the pass frequency? Unfortunately, i

[Repeater-Builder] 1-5/8" Heliax for sale

1-5/8" Heliax for sale: The McMinn Co Amateur Radio Club offers for sale the following: 3 rolls of 1-5/8" Heliax cable with Huber Suhner EMP Protector / 7/16 Connector on the "bottom" end. There is approximately 190-200 feet on each roll of cable. The cable is used, but in good condition, still s

Re: [Repeater-Builder] Motorola Pagers for telemetry

I think the Advisor was either 512 or 1200 baud POCSG. The RF receiver section determined the frequency range and it plugged into the main board that was the decoder and display. If I remember correctly, you can just plug in the frequency band receiver that you wanted to use onto any main boar

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

Hey Joe, Thanks for the info. Not really having a problem keying it, just the tx audio sounds real bad (bassy and mushy) and not enough drive. Will take a look on some packet sites though. Txns, Robert --- In Repeater-Builder@yahoogroups.com, [EMAIL PROTECTED] wrote: > > I used a 4AT for a link

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

I used a 4AT for a link transceiver for awhile and I don't remember it being too difficult to interface to my controller. I'll look for any notes that I still may have, but that may take some time. The ham shack is torn apart right now remodeling windows. I remember using a relay to key the H