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MMDVM Hat won't RX in Duplex Mode
Posted: Wed Sep 26, 2018 11:35 pm
by cx8bit
Hello,
I own a MMDVM Pog and a STM32-DVM V3. I connect those to 2 Motorola GM300 radios (duplexor + good antenna).
I managed to configure them in Simplex mode and they work super fine
.
But when I set the Duplex mode (Repeater mode, no changes in hardware) and do the repeater configuration, both hats won't RX
. The COS light just won't turn on, and there is no DMR (in this case) activity in the dashboard. When I switch it back to Simplex, it works fine again (the COS light turns on again).
It works fine for TX. Any idea? I'm running Pi-Star:3.4.16 and the FW version is MMDVM:201808... something (pretty new).
I don't get any logs.
Any idea?
73!
Re: MMDVM Hat won't RX in Duplex Mode
Posted: Sat Sep 29, 2018 6:50 pm
by cx8bit
My bad! My handy had the wrong settings. The COS light won't turn on until the handshake is complete!
Re: MMDVM Hat won't RX in Duplex Mode
Posted: Sat Dec 01, 2018 5:25 pm
by W0JRG
What setting did you have to change to get the RX to work in duplex mode? I am having the same issue here.
Re: MMDVM Hat won't RX in Duplex Mode
Posted: Sun Mar 21, 2021 7:48 pm
by m0guy
Yes please share the details.
I have MMDVM repeater POG board with GM350. I get perfect TX to the radio, but no matter what I do the MMDVM board seems to be deaf to any transmissions. I know the RX GM350 is hearing traffic, and sending it to the board. Should I be wiring a COS line from the radio to the MMDVM board or just AudioRX and ground?
Re: MMDVM Hat won't RX in Duplex Mode
Posted: Sun Jul 11, 2021 11:11 am
by g7kbr
m7guy wrote:Yes please share the details.
I have MMDVM repeater POG board with GM350. I get perfect TX to the radio, but no matter what I do the MMDVM board seems to be deaf to any transmissions. I know the RX GM350 is hearing traffic, and sending it to the board. Should I be wiring a COS line from the radio to the MMDVM board or just AudioRX and ground?
Hi
Did you ever fix your POG board problem?
Regards
Paul
Sent from my iPhone using Tapatalk
Re: MMDVM Hat won't RX in Duplex Mode
Posted: Sun Jul 11, 2021 11:36 am
by m0guy
Yes I have it all working just great now..
I had to make an internal modification to the GM350 radio from the IF chip and pin 11 on the edge connector.
I've written a detailed article for RadCom which should be published shortly. They had to trim it down a little but not quite down to the "mostly harmless" level.
Cheers,
--Guy
Re: MMDVM Hat won't RX in Duplex Mode
Posted: Sun Jul 11, 2021 11:38 am
by g7kbr
What version of firmware are you using for the POG board?
Sent from my iPhone using Tapatalk
Re: MMDVM Hat won't RX in Duplex Mode
Posted: Sun Jul 11, 2021 11:48 am
by m0guy
Now that's an interesting one..
the pi-star is reporting MMDVM: 20190130
I have tried to update it but it always seems to fail. If you know how to get the latest on it I would be very interested.
Cheers,
--Guy
Re: MMDVM Hat won't RX in Duplex Mode
Posted: Sun Jul 11, 2021 11:51 am
by m0guy
The repeater is here if you want to take a look at the dashboard:
https://gb7gp.m0guy.com
Re: MMDVM Hat won't RX in Duplex Mode
Posted: Sun Jul 11, 2021 11:57 am
by m0guy
Just tried to update the firmware now.. and I'm getting
Press any key to write the rpt_hat-19.2mhz firmware to this modem or Ctrl-C to quit...
Preparing tools ...
Cloning into 'stm32flash-code'...
fatal: unable to connect to git.code.sf.net:
git.code.sf.net[0: 216.105.38.16]: errno=Connection timed out
/usr/local/sbin/pistar-mmdvmrpthatflash: line 77: cd: stm32flash-code: No such file or directory
make: *** No targets specified and no makefile found. Stop.
Flashing MMDVM_RPT_Hat
/usr/local/sbin/pistar-mmdvmrpthatflash: line 172: stm32flash-code/stm32flash: No such file or directory
/usr/local/sbin/pistar-mmdvmrpthatflash: line 175: stm32flash-code/stm32flash: No such file or directory