Analog FM mode working on MMDVM Repeater

[kb2mxv]

Here is a quick demo of the FM Mode working on a MMDVM. I have some more fine tuning to do, but you can see that it does work.

V3F4 MMDVM board from BI7JTA

[KJ7IEG]

Could you show me how do you configure it to work FM Analog mode?

[M1DNS]

Could you show me how do you configure it to work FM Analog mode?

First FM mode doesnt work with a HOTSPOT board. For a REPEATER install you need to load the FM firmware onto ur MMDVM repeater board. All PROVIDING it supports it of course, as not all of them will.

You'll need to be running the current pistar 4.1.2

Then copy this into the mmdvm.ini file

[FM]
Enable=1
# Callsign=
CallsignSpeed=20
CallsignFrequency=1000
CallsignTime=10
CallsignHoldoff=0
CallsignHighLevel=50
CallsignLowLevel=20
CallsignAtStart=1
CallsignAtEnd=1
CallsignAtLatch=0
RFAck=K
ExtAck=N
AckSpeed=20
AckFrequency=1750
AckMinTime=4
AckDelay=1000
AckLevel=50
# Timeout=180
TimeoutLevel=80
CTCSSFrequency=88.4
CTCSSThreshold=30
CTCSSLevel=20
KerchunkTime=0
HangTime=7
UseCOS=1
COSInvert=0
RFAudioBoost=1
MaxDevLevel=90
ExtAudioBoost=1
Sent from my SM-G935F using Tapatalk

[G0FHM]

I have a BI7JTA board, and the current firmware doesn't like FM

Could you provide. Link to the firmware you are using please?

Thanks

James

[KE7FNS]

I have a BI7JTA board, and the current firmware doesn't like FM

Only processors running 180Mhz or higher are capable of running FM.

Also I think you might have a board based on MMDVM_HS and not MMDVM and in that case MMDVM_HS doesn't work with FM at all.

[G0FHM]

Well I can say that it definately works!

Having trouble getting the K (or I as i prefer), but the callsign at the end of the hang period is there

I've just put a license request in for a dual mode FM/DMR repeater (maybe the first MMDVM/P-Star FM unit in the UK?

One thing I have noticed is the acktime=1000. Is this milliseconds or seconds? Obviously if it's seconds, that's probably why I am not getting it

Thanks for all your help thus far!

James

[KE7FNS]

Well I can say that it definately works!

I didn't realize you were the same person from the other thread.

Most people that are asking about FM have a board that doesn't support it which is why I said that.

Again, you shouldn't be asking about which version of what firmware someone else used. You should be downloading the most current source code, then configuring it correctly for your board, then building and flashing it. That way you know EXACTLY what firmware you have and how it is configured.

[ve3fdw]

I have a mmdvm pog i just updated the firmware and added the FM fuctions to the mmdvmhost file in pi-star and I cannot get the analog fm mode to work. Any help?

[G0FHM]

From personal experience, have a look at the settings in the mmdvm.ini file. If you don't have a COS connection between the radio and the board, set COS to 0.

Also, start pistar up and have a look through the log when it has had time to boot up and get all the services running. If you see anything involving a NAK relating to FM, then it will be more than likely a firmware issue, being incompatible with the mode.

Copy and paste your logfile, maybe we will be able to see something.

73

J

[KE7FNS]

I have a mmdvm pog i just updated the firmware and added the FM fuctions to the mmdvmhost file in pi-star and I cannot get the analog fm mode to work. Any help?

The pog boards are no longer supported, the processor does not meet the minimum speed required.

I said that earlier in the thread:

Only processors running 180Mhz or higher are capable of running FM.

https://groups.io/g/OpenDV/message/367



This is the last working commit for a pog board.
https://github.com/g4klx/MMDVM/commit/1 ... e4a1e3ee98