Can someone tell me how I can defeat the mic hangup circuit on this
radio so that the receive PL stays active when the mic is not grounded?
I have no convenient way of grounding the mic on the car's M11 so I get
a lot of hash, burps, AVL bursts, etc. which is annoying.
My desk M11 works fine and does not show the monitor symbol because
I'm using a Maxtrac 3000 desk mic on it.
GTX M11 Mobile Radio Mic Hangup Circuit...
Moderator: Queue Moderator
- Tom in D.C.
- Posts: 3859
- Joined: Tue Sep 04, 2001 4:00 pm
- What radios do you own?: Progreso soup can with CRT
GTX M11 Mobile Radio Mic Hangup Circuit...
Tom in D.C.
In 1920, the U.S. Post Office Department ruled
that children may not be sent by parcel post.
In 1920, the U.S. Post Office Department ruled
that children may not be sent by parcel post.
I would just solder a short jumper across the hang-up and ground pins on the MIC jack in the control head. That will defeat it forever. You'll have to use the front panel MON button to get the radio in or out of tone decode.
This works very well on MaxTracs, and since they use the same pins on the MIC jack, it should work just as well on a GTX mobile.
Bob M.
This works very well on MaxTracs, and since they use the same pins on the MIC jack, it should work just as well on a GTX mobile.
Bob M.
- Tom in D.C.
- Posts: 3859
- Joined: Tue Sep 04, 2001 4:00 pm
- What radios do you own?: Progreso soup can with CRT
GTX mic hangup circuit...
Thanks for the information. I should have figured it was as simple as that.
I see by the good old Batlabs site that the hook switch comes out to pin 14
on the 16-pin connector, so I should be able to get full time receive tone
squelch by grounding pin 14 permanently on the back of the radio. Live and
learn.
I see by the good old Batlabs site that the hook switch comes out to pin 14
on the 16-pin connector, so I should be able to get full time receive tone
squelch by grounding pin 14 permanently on the back of the radio. Live and
learn.
Tom in D.C.
In 1920, the U.S. Post Office Department ruled
that children may not be sent by parcel post.
In 1920, the U.S. Post Office Department ruled
that children may not be sent by parcel post.