GR300 / M10 programming help

central150 · Post by **central150** » Thu Dec 29, 2005 5:04 pm

I have 2 M10's together, duplexer and all in a repeater set up that I purchased. These are vhf, and, as you know, single channel radios. I have a programming question. The Receive radio for the repeater, I program that with the frequency that I transmit on with my portables, and nothing in the TX side of the channel, correct? Then, in the TX radio, I program that with the receive frequency and the transmit frequency? I think I explained it correctly.

M10#1 (Receive Radio)
RX: 153.830
TX: Blank

M10#2 (Transmit Radio)
RX: 153.830
TX: 155.760

Is this how I am supposed to have them programmed? Any help would be great.

thanks,
Tony

AEC · Post by **AEC** » Thu Dec 29, 2005 5:17 pm

The best method to use on the transmit side would be to program the TX freq. in the RX location as well, or there may be a possibility of the RX on the transmitter side to open prior to going into transmit.

Probably never happen, but why play games?

Repeater receiver:
RX: 153.830
TX: BLANK

Repeater transmitter:
TX: 155.xxx
RX: 155.xxx

That's the best way to eliminate troubles.

OR...you can remove the RX side of the cable in the transmitter and forget about all troubles.

central150 · Post by **central150** » Thu Dec 29, 2005 5:19 pm

Ok...I tried that earlier, and when I used my portable radio in direct (155.760 114.

, it keyed the repeater.

AEC · Post by **AEC** » Thu Dec 29, 2005 5:24 pm

You can also program a DPL tone on the transmitter's receiver, that should remove the ability to transmit when you are in T/A mode.

No repeater should key with two users in T/A mode, recheck your connections here, there is a problem, or not enough shielding and you are getting RF into the controller to cause it to trip.

Enterprize.....One to beam up!

central150 · Post by **central150** » Thu Dec 29, 2005 5:25 pm

Got it...thanks!!

central150 · Post by **central150** » Thu Dec 29, 2005 7:42 pm

The output on this thing is great, but when transmitting from a portable/mobile to the repeater, the input audio is crappy. It's really choppy and staticy. Any suggestions?

Tony

Will · Post by **Will** » Thu Dec 29, 2005 7:48 pm

What is inbetween the two M120's, a RICK or something else?

motorola_otaku · Post by **motorola_otaku** » Thu Dec 29, 2005 7:50 pm

Check the jumper (JU551, I believe, someone correct me if I'm wrong) in the RX radio, which sets Unmuted/Flat or Muted/De-Emphasized audio at the accessory connector. It needs to be set to Muted/De-Emphasized.

Another way to keep it from keying when you're talking simplex is to disconnect Pin 8 on the TX radio cable.

central150 · Post by **central150** » Thu Dec 29, 2005 7:51 pm

I believe a RICK. The unit does have a duplexer attached, and the repeater controls at the top to turn off the repeater function and the setup button. I really haven't opened up the cabinet yet to look inside. But they are 2 M10's together in a small cabinet with "GR300" at the bottom. Not a bad little unit.

Tony