Thanks for the note. I am familiar with Repeater-Builder. But, it doesn’t specifically address the id-o-matic as used with the mtr2000, if fact, I couldn’t find any references anywhere to that combination. Also, regarding Repeater-Builder, some of the information, being from many different people, c...

We would like to add a courtesy beep to the MTR2000 and are considering using the ID-O-Matic. Other than that, we have no issues with the built-in controller. I have asked Dan (w7rf) at Radiolan if he had any tips or knew of anyone who had done this. But, he could only tell me he was sure it would w...

Well, I seem to have been able to answer my own question... it seems the MTR2000 internal controller does not support a courtesy beep. SO, on to hardware solutions...

We are upgrading our repeater from a GR1225 to a MTR2000. On the GR1225 we have the Courtesy Over Beep enabled. We would like the same on the MTR2000 but cannot seem to find the option. We are using the built-in controller in both radios. Are we missing something? Or, does the MTR2000 only support a...

I have an HT1250 with an odd problem. The backlight turns itself on. This happens about 45 seconds after turning the backlight off. Also, there is a dim backlight on at all times. I have tried changing the "Automatic Backlight" setting in CPS and that has no effect, same for the Utilities ...

I have gotten a bit further and found what looks like the source of the problem. I started with the Rotary Control set to Select Channel (fixed) , and that worked. However, changing the setting to Select Channel (Continuous) causes the problem described above. Is this a known issue? Is there a way t...

I am trying to program a pair of HT1250s (AAH25RDF9AA5AN PMUE1409E & PMUE1409A). One has a full DTMF keypad, the other does not. I am using "Professional Radio" CPS vR06.12.05 on 64bit Win-7 and a 32bit WIN-XP machines. I am able to generally get the radios programmed but at some point...

The problem was in the Radio Wide programming. Option Board Type was set for Full Serial Interface. I set it to None and the radio now works as expected.

As noted in my original post, I have observed this issue with fully charged (new) batteries. Also, the behavior is identical on both radios making it look like a configuration issue -- though I can't see any obvious issues in the code plug.

Thanks for the suggestions. Unfortunately, I do not have physical Ethernet at the location. But, I do have Wi-Fi. So, I looked for RS232-over-Wi-Fi and found a couple of options. But, then I realized I may have been looking at this upside-down... I was trying to do the USB-to-Serial/TTL on the remot...

I have a pair of 16ch UHF P1225s I picked up for a very good price. (Model P94ZPC90C2AA). I am able to program them seemingly without problem, But, when I try to actually use them, they don't seem to work. Checking the output with a frequency counter I get random readings, but none remotely near the...

I would like to be able to program my GR1225 repeater remotely. One option is to simply place a laptop at the repeater site and do screen sharing. That works, but is not really my first choice as it ties up a laptop full time. The second option, which I have working in a prototype, is to place a sma...

I have some news to report. We switched to CSQ on tx and we have not observed the problem again. Of course, listeners who are using Tone receive no longer hear the "over beep." Depending on the capability of radios in use on the repeater, we may try to use a different PL on tx. Seems most ...

Thanks for the explaination. So, if if the problem is being caused by the types of issues you note, turning PL off on tx would stop the symptoms I described above, right? That is an easy test. BTW, I doubt it is the duplexer, that was professionally tuned and I have the screenshots of the results. B...

Thanks to all so far for some interesting ideas. However, one thing still puzzles me: How can the "noise" (or whatever it is that holds the repeater up) do so without the PL tone being present? And, if the PL tone is actually present in the noise, why doesn't it activate the repeater by it...

I am still a relatively new member here and, in general, am not too bothered by the moderation. However, I have found that when asking for help, it would nice to be able to respond more quickly to questions, etc. For that reason, I would like to request to be able to post un-moderated. Thanks for yo...

I had heard to avoid lmr400 inside the case, but not to avoid at all. Thanks for noting that. It is only a 12 foot run, so we can switch next time we lower the mast.

Ah. Yes, we started at 131.8 and moved to 88.5.

Thanks for the quick response. I guess I need to add some additional info. When we first had the problem, the repeater was in another location in the house, and was not grounded. We only grounded it after moving it to the roof. The solar system does not charge local batteries, it just feeds back int...

We have noticed that our GR1225 (40w, UHF running at around 15w) occasionally exhibits a problem when the receive carrier drops. We operate with a PL tone on rx and tx and what we observe is when the receive carrier drops, the repeater continues to transmit white noise (open monitor) until the TOT h...

Thanks to @wavetar & @motorola_otaku You have both given me a number of ways to go. It may be a while before this gets implemented, but I can now start looking for equipment and planning a path forward.

Or, maybe an M1225?

wavetar wrote:I have done both 1 & 2, using stock GR1225's and CDM radios. Straight forward hookup using the accessory connectors.

Thanks. Would a Maxtrac work? And, do you have a schematic for the cables or us therva part number?

motorola_otaku wrote:Do you have network access at either site? Do you have LOS between the sites where you can put up an unlicensed microwave hop?

No network access. But LOS is a possibility. Can you suggest some microwave systems? I might also be able to use 2.4 gHz wifi gear.

I am looking to link two separate repeaters (both UHF GR1225s) that are on separate frequencies. I have heard three suggestions: Use two additional two-way radios, one at each site, on simplex to link the two repeaters Use two additional radios, one at each site to listen to the output of the remote...

I have a USB "Ribless" cable* (USB to RJ45) that I use with a GR1225 repeater. I have now acquired a couple of P1225s and would like to use the same cable with them. The issue I have is in connecting the cable to the P1225. At first, I had hoped I could just add an RJ45 jack to the desktop...

...check the coupling cap between the driver and final, those will get bad solder joints as well. And go over the low pass filter solder joints, they get hairline cracks in them. If re-soldering doesn't fix it you might have a bad transistor, could be the final, could be one of the others. Unless y...

UHF R1225s are notorious for people thinking the PAs were blown, but most I've seen were repairable by resoldering. The transistors in them are remarkably tough. Biggest problem spot is the base tab of the output transistor, gets burnt solder underneath of it sometimes. Also the caps and coils in t...

motorola_otaku wrote:UHF R1225s were notorious for blowing the PAs, especially the 40W units. ...

Thanks. That is clearly what happened. Now my question is " would a blown final cause the low power behavior I am seeing, or do they fail 100% when they go?

I have a GR1225 H5157B I am trying to get on the air. When it was received it exhibited a problem noted by several others: It would start to transmit and then immediately cut out. I fixed that by removing, cleaning and resoldering the two caps on the M25C24 - one was clearly cracked free of the sold...