DVMEGA doesn't hear RFinder B1

DV-Mega Single / Dual band Hat for the Raspberry Pi
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K7GPS
Posts: 2
Joined: Fri Oct 01, 2021 10:20 pm

DVMEGA doesn't hear RFinder B1

Post by K7GPS »

Awhile back, not sure when, my DVMEGA hotspot running Pi-Star 4.1.5 and Dashboard 721 no longer "hears" or logs my Rfinder B1. The hotspot works fine with my Anytone D878, and the 878 hears the B1 direct. Common problem was the B1 frequency offset, recommended -300Hz, and that's what it's set on. The B1 hears the hotspot ok for receive. I've checked and re-checked settings on the hotspot configuration to no avail. DVMEGA is HR3.26. Any ideas on what else to check? TIA. Dave K7GPS
KE7FNS
Pi-Star Team
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Joined: Wed Apr 17, 2019 11:11 pm

Re: DVMEGA doesn't hear RFinder B1

Post by KE7FNS »

K7GPS wrote: Sun Oct 03, 2021 3:37 pm Any ideas on what else to check?
It has to be your programming in your radio.

Could be:
  • invalid color code
  • simplex settings on a duplex hat, or vice versa
  • typo in DMR ID
Use MMDVMCal and test with it.
http://www.kh7ms.com/mmdvm/
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
K7GPS
Posts: 2
Joined: Fri Oct 01, 2021 10:20 pm

Re: DVMEGA doesn't hear RFinder B1

Post by K7GPS »

Thanks for the suggestions, Jason.

- CC is 1 on hotspot and radio.
- All setup for simplex. That's all it's ever been. Used to work ~ 6-8 months ago. Fighting with it since.
- DMR ID correct in B1 and hotspot.

- I tried the MMDVMCal but got this:
Stopping Pi-Star Services...
MMDVMHost: no process found
MMDVMHost_NoOLED: no process found
MMDVMHost_Adafruit: no process found
Starting Calibration...
Version : 1, description: DVMEGA HR3.26
Board not supported
Starting Pi-Star Services...
mount: /: mount point is busy.
Finnished...
KE7FNS
Pi-Star Team
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Joined: Wed Apr 17, 2019 11:11 pm

Re: DVMEGA doesn't hear RFinder B1

Post by KE7FNS »

K7GPS wrote: Sun Oct 03, 2021 6:33 pm - All setup for simplex. That's all it's ever been. Used to work ~ 6-8 months ago. Fighting with it since.
What was changed 6-8 months ago? Cause the Pi-Star software hasn't changed, some dashboard peices have been updated, but nothing that would impact the operation of the radio.

Did you update the firmware on either the DVMega, or the radio since then?

Maybe you need adjust the offset more, maybe -300 is too much, or not enough. Use an SDR or a service monitor if you have access.

K7GPS wrote: Sun Oct 03, 2021 6:33 pm Version : 1, description: DVMEGA HR3.26
Board not supported
Ah, DVMega is not supported. No idea how you can test it, probably going to have to contact whoever supports a DVMega and ask for support there as I don't think this is a Pi-Star issue, seems like a conflict with your DVMega and that radio.

You could buy a MMDVM_HS board and test with that.
K7GPS wrote: Sun Oct 03, 2021 6:33 pm mount: /: mount point is busy.
You should manually reboot your hotspot when you see that message.
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
AF6VN
Posts: 645
Joined: Fri Jul 20, 2018 1:15 am

Re: DVMEGA doesn't hear RFinder B1

Post by AF6VN »

Just a random idea... What power level is the radio set at? Given the short distances used with a DVMega hotspot, make sure the radio is on the lowest possible power setting -- full power could be overloading the DVMega front-end. Even the typical 1W (as in my MD-390, MD-2017, AT-878) may require some space from the hotspot (my D74 used for D-STAR is just 0.5W on L and 0.05W on EL -- and EL is where I run it for hotspot access).

Google shows the B1 is also an Android based cell-phone -- and those often are configured to automatically update firmware. Could some firmware update have taken place on the phone that you didn't notice?

--
AF6VN
Dennis L Bieber
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