<RESOLVED> V4.1.5 MMDVM DMR Repeater dropouts?

Help with DMR issues
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g6fgy
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<RESOLVED> V4.1.5 MMDVM DMR Repeater dropouts?

Post by g6fgy »

Very much clutching at straws here, just in case anyone has had a similar issue.

Newly commissioned MMDVM based repeater running DMR only with Pi-star V4.1.5. Occasionally the box will drop carrier during a transmission on receive and then be unobtainable for incoming RF transmissions on either slot. Most times it self-resets after a short period, but occasionally a reboot is necessary to restore service for a short while before it fails again. Logs show nothing untoward occurring with everything appearing normal and Pi temperature is well with the green zone.

Really only posting this as there appears to have been a few issues with hotspots and v4.1.5 so just wondering if other repeater users had seen issues as well using this release.

Eric - G6FGY
Last edited by g6fgy on Fri Jun 25, 2021 8:37 am, edited 1 time in total.
KE7FNS
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Re: V4.1.5 MMDVM DMR Repeater dropouts?

Post by KE7FNS »

g6fgy wrote: Fri Jun 25, 2021 4:03 am Logs show nothing untoward occurring with everything appearing normal and Pi temperature is well with the green zone.
Turn up the detail of the logs and see if you can figure out what is going on. You are going to have to sit and wait for it to happen and then look through the logs and see if you can find out what its doing.

Worrying about the RPi CPU temperature is useless, it will throttle itself to keep from baking itself. The software doesn't put that much stress that it would matter anyways.
g6fgy wrote: Fri Jun 25, 2021 4:03 am Really only posting this as there appears to have been a few issues with hotspots and v4.1.5 so just wondering if other repeater users had seen issues as well using this release.
You haven't really provided any relevant information.

What MMDVM/MMDVM_HS board are you using? How is it connected?

What configuration of DMR: direct or gateway?

What DMR network and master?

Does it die on RF transmissions or from the network? or both??

Do you have access to watch the LED's on the board, or is this in some remote location?
If someones previous actions are any indication of their future actions, then I predict the deletion and removal of access will happen at any moment. 7-11-2020.

"07/13/20 This Website Has Been Taken Down" ... again :lol: and again
g6fgy
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Re: V4.1.5 MMDVM DMR Repeater dropouts?

Post by g6fgy »

Thanks for the reply. At this time it was more of a general enquiry from me to see if others had had an issue with the current release, rather than looking for anything specific, but I appreciate the points you raised, so thank you for that guidance.

Obviously more detective work is needed and other lines of enquiry are also being pursued by the repeater builder as it's not something he's come across before.

The main difficulty is trying to reproduce the issue under known and controllable conditions, rather than relying on general repeater usage to cause the failure.

As you say, wait, watch and analyse.

Eric - G6FGY
g6fgy
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Re: <RESOLVED> V4.1.5 MMDVM DMR Repeater dropouts?

Post by g6fgy »

Marking post as <resolved> as after much thought it seems more likely to be a radio issue rather than a Pistar one.

Eric - G6FGY
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Re: <RESOLVED> V4.1.5 MMDVM DMR Repeater dropouts?

Post by MW0MWZ »

The only other comment I have, is that we recently updated the version of MMDVMHost - so its probably a good idea to update the firmware on your MMDVM board too.
Andy

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g6fgy
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Re: <RESOLVED> V4.1.5 MMDVM DMR Repeater dropouts?

Post by g6fgy »

Cheers Andy, thanks for the thought. Worth considering. All options are open at the moment, including changing the radio hardware as a possible last resort.

Eric G6FGY
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