We personally have retired the GM300 and Maxtrac radios from repeater use due to the fact most of the radios have had lots of use.. Those radios have gone through heavy use over the past 12 to 13 years and are no longer in production.. Some times it becomes difficult to find those particular radios as well.. Now as far as the Technical details on the 16 pin adaptor I have found CM200 and CM300 with 16 pin adaptor and pin 8 programmed for csq/tone etc.. seems to work fine for both of our repeaters.. UHF repeaters are more simpler to set up than VHF repeaters reason is in UHF you can probably depending on where your tower site is located get away with a mobile duplexer cheap there usually around 130 dollars or so.. In VHF it is a 600khz spread and problems of loop back issues can occur very easily especially with cables duplexers many other things if incorrectly installed.. We have gone through 2 different manufactures now for duplexers and still have had issues with the transmitter getting into the receiver our personal next step is to double check the tuning of our used Sinclair 6 cavity duplexer and possibly putting a Bandpass filter for our RX side just to see if that might help with the duplexers installed as well.. Good luck on the installation and enjoy! I use DMK Engineering URI with 16 pin adepter from uricables.com Repeater adapter with CM200s.. Loren Tedford (KC9ZHV) Email: lorentedford@gmail.com http://kc9zhv.lorentedford.com On Wed, Dec 10, 2014 at 8:49 PM, <mike@midnighteng.com> wrote:
You shall get a bunch of opinions here but it does depends on how inexpensive is inexpensive to you.
Here is my opinion if you have 450 to spend, Use hamtronics rx and exciter... learn and reuse in actual repeater. They hold their value better than some other new equipment if you can believe that. The rx's are very sensitive .12mv/12db sinad.
I use both the old rock bound units and the newer tunable synthesized units and they both work great. Buy them wired and tested and they come tuned for your freq. Easy to repair.
The rock bound units are no longer sold. Sometimes a good deal found on ebay. But you better know what you are buying. They make these in the commercial freq splits also.
ebay has a large selection of motorola gm300's and maxtrac/ameritrac but you will need to be able to program them and sensitivity is .20 - .34mv unless you break-out tech manual to re-align specific. And again you need to know what you are buying here also. Not all work in amateur areas. Could be the best cheap option if you can get them programed.
...mike/kb8jnm
-------- Original Message -------- Subject: [App_rpt-users] 'inexpensive' radios for a local repeater From: Steven Donegan <steve@donegan.org> Date: Wed, December 10, 2014 9:09 pm To: "app_rpt-users@ohnosec.org" <app_rpt-users@ohnosec.org>
What new or surplus radios work well with Allstar/Asterisk/DMK-URIx? I want to set up a least cost repeater so I can learn more. TIA ____________ Steven Donegan KK6IVC SSCC/NORC Life Member, Car #86 www.sscc.us<hr>_______________________________________________ App_rpt-users mailing list App_rpt-users@ohnosec.org http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
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