<div dir="ltr">Hello..<div><br></div><div>GM300 Pin 11 - RTCM Pin 3 - Rx Audio JU 551 inside the GM300, in position A gives FLAT (not De-emphasised) audio out pin 11.We want to use the RTCM's internal Squelch.</div><div><br></div><div>GM300 Pin 8 - RTCM Pin 4 - CTCSS Input</div><div>GM300 Pin 5 - RTCM Pin 2 - TX Audio</div><div>GM300 Pin 3 - RTCM Pin 7 - PTT</div><div>GM300 Pin 7 - RTCM Pin 9 - Gnd</div><div><br></div><div>RTCM Info - <a href="http://www.micro-node.com/thin-m1.html">http://www.micro-node.com/thin-m1.html</a></div><div>GM300 Info- <a href="http://www.batlabs.com/gm300.html">http://www.batlabs.com/gm300.html</a></div><div><br></div><div>Google is your friend. </div><div><br></div><div>Have fun!!! </div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Jun 20, 2015 at 1:48 AM, R. Wayne <span dir="ltr"><<a href="mailto:allstar@controlservers.net" target="_blank">allstar@controlservers.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div dir="ltr">
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<div>I’ll confess that I am new to this part. It was dumped on me without
warning and that’s OK. Time to learn a few things. I have a GM300 that is going
to be a remote base and a cable purchased from eBay that is prewired for the
GM300 side. I understand (I think) that TX goes RX, RX goes to TX, GRND to GRND
– but now for PTT, COR and CTCSS. I wonder if some could push me over a cliff –
I mean in the right direction. I have no documentation on the RTCM.</div>
<div> </div>
<div>Thanks, R. Wayne</div>
<div> </div>
<div>The RTCM connections are:</div><font face="Arial">
<div><br></div></font><font face="Arial">DB9-Female<br><br></font><font face="Arial">1 Vin (12v)<br></font><font face="Arial">2 TX Audio<br></font><font face="Arial">3 RX
Audio<br></font><font face="Arial">4 CTCSS<br></font><font face="Arial">5 GND<br></font><font face="Arial">6
GND<br></font><font face="Arial">7 PTT<br></font><font><font>8 GND<br></font><font>9 GND</font></font></div>
<div><font face="Arial"></font> </div>
<div><font><font>The GM300 cable (and radio)
connections are:<br></font></font></div>
<div> </div>
<div>Pin #</div>
<div> </div>
<div>2
MIC
BLU</div>
<div>3
PTT
WHI-BLU</div>
<div>4 PROGRAMMABLE OUTPUT
BRO</div>
<div>5 FLAT TX
AUDIO
GRN</div>
<div>7
GROUND
WHI-GRN </div>
<div>8 PROGRAMMABLE I/O (COR ?)ONG</div>
<div>11 RECEIVE
AUDIO
WHI-ONG</div>
<div>14 PROGRAMMABLE
I/O
WHI-BRO</div>
<div>15-16 Jumpered to enable internal
speaker</div></div></div></div>
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