DMR and Pi-Star duplex problem

[taprock]

I am hoping for someone who can spot my problem. My radio will not connect to the repeater it says ”Repeater not found”.
Here is a list of what I have and what I have done.

Radio is a Maverick or Anytone 890. It uses CPS Maverick 1.03 but similar to Anytone CPS version 3.0.4.
The repeater is a Raspberry Pi 3 model B duplex.

I have the repeater working, it is connected by Ethernet to my router and shows a Brandmeister connection.
At this point I think there must be something wrong in the code plug but I have no idea. I programed the repeaters TX frequency into my radio as an analog and I can hear radio noise so I think the repeater is doing what it is supposed to do. I’ve attached screenshots of the Pi-star configuration page and one of my channels from the code plug. I would just say it’s the radio but all of my analog channel including repeaters work great.

I've walked away from it several times because I am so frustrated but I keep coming back because I want to figure it out.

 

[AC5A]

I’m not familiar with the pistar device. Are you trying to use DMR? Shouldn’t your codeplug contain a receive group list? BM password correct?

 

[KD8DVR]

I’m not familiar with the pistar device. Are you trying to use DMR? Shouldn’t your codeplug contain a receive group list? BM password correct?

Not all radios require receive groups.

 

[KD8DVR]

I am hoping for someone who can spot my problem. My radio will not connect to the repeater it says ”Repeater not found”.
Here is a list of what I have and what I have done.

Radio is a Maverick or Anytone 890. It uses CPS Maverick 1.03 but similar to Anytone CPS version 3.0.4.
The repeater is a Raspberry Pi 3 model B duplex.

I have the repeater working, it is connected by Ethernet to my router and shows a Brandmeister connection.
At this point I think there must be something wrong in the code plug but I have no idea. I programed the repeaters TX frequency into my radio as an analog and I can hear radio noise so I think the repeater is doing what it is supposed to do. I’ve attached screenshots of the Pi-star configuration page and one of my channels from the code plug. I would just say it’s the radio but all of my analog channel including repeaters work great.

I've walked away from it several times because I am so frustrated but I keep coming back because I want to figure it out.

Transmit offset of the hotspot may be off.

 

[dickie757]

Look up "how to calibrate mmdvm hotspot"

What is the RF section/hat?

 

[taprock]

Look up "how to calibrate mmdvm hotspot"

What is the RF section/hat?

Unfortunately the radio has to connect in order to calibrate. The radio is not finding the repeater even though I am hearing talkgroups I can not key up.

 

[popnokick]

I see you are running an older version of the MMDVM modem hat firmware (1.5.2). Possible (but not likely) that you need to update the MMDVM firmware to the current version (likely 1.6.1). This is assuming your MMDVM modem is one that permits the upgrade (some don't). This has resolved similar problems in the hotspots I run and others who have the same type hotspot (Pi Zero 2W or Pi3b). This was true both with Pi-Star and WPSD... I've run both but currently use WPSD on all of mine. Also... WPSD has a very easy to use modem firmware update utility.

 

[dickie757]

Do you have a SDR? If so, use it to see what freq the repeater is actually outputting. Then, tune your HT to that freq. At that point, BER should be low enough to decode packets. Doing the opposite will require the calibrate function of mmdvm. Or, set your channel spacing to 2.5kHz on HT and find the rx freq of the repeater. If you can get a smaller spacing, use it.

 

[KE5MC]

It's been awhile since I had my hotspot up and running using my DMR radio. I recall TS2 not enabled and using "simplex" mode and transmitting on the receive frequency. I'm not familiar with the raspberry Pi duplex version and how it works. Mine is a raspberry Pi W with the hat from the early days of hotspots.

Good Luck!
Mike

 

[Alarms50]

As AC5A mentioned above, verify that in the DMR configuration section of pi-star, the Brandmeister password is correct. That is the "easist" correction (if needed).

 

[toyboy]

I ordered a single antenna PI and hat combo but don't have it yet but did some research.
isn't the tx and rx freqs supposed to be the same?
I believe the duplex is for 1 x antenna uhf and 1 x antenna vhf.not sure about that one but i'm sure the single antenna one is tx and rx same frequency.