ZUM Radio MMDVM-pi audio issuses

Help with other MMDVM Repeater Boards (with NO onboard RF)
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AD7VB
Posts: 4
Joined: Sat May 04, 2019 5:19 pm

ZUM Radio MMDVM-pi audio issuses

Post by AD7VB » Sat May 04, 2019 5:33 pm

I have a Zum Radio MMDVM-pi 0.9 board and I'm trying to make a high power D-star hotspot. The radio I'm using is a ICOM IC-207h.

It seems to receive my ID-5100 well and forwards good audio to the reflector. However signals coming from the reflector transmited by the 207h are very low in volume when received by my 5100.

Any ideas where I should be looking for the problem?

Thanks for any advice
73
Todd
AD7VB

M1DNS
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Joined: Thu Apr 05, 2018 5:30 am

Re: ZUM Radio MMDVM-pi audio issuses

Post by M1DNS » Sat May 04, 2019 7:56 pm

I remember back in the day of Dstarrepeater setups the '207 wasn't that great a rig to choose as the node radio.

Andrew M1DNS, (Mod)

Andrew M1DNS.
Pi-star Admin Team.

AD7VB
Posts: 4
Joined: Sat May 04, 2019 5:19 pm

Re: ZUM Radio MMDVM-pi audio issuses

Post by AD7VB » Sat May 04, 2019 8:39 pm

Ok is the 208 any better?

Or any ideas on a inexpensive readily available radio that is better?

Thanks
Todd
AD7VB

M1DNS
Posts: 803
Joined: Thu Apr 05, 2018 5:30 am

Re: ZUM Radio MMDVM-pi audio issuses

Post by M1DNS » Sat May 04, 2019 8:44 pm

For DSTAR ft7800 ft8800 worked well.
Tait TM8100 series and Motorola GM 300 series.

Andrew M1DNS, (Mod)

Andrew M1DNS.
Pi-star Admin Team.

AD7VB
Posts: 4
Joined: Sat May 04, 2019 5:19 pm

Re: ZUM Radio MMDVM-pi audio issuses

Post by AD7VB » Sat May 04, 2019 9:12 pm

Thanks. I'm still curious why the audio would be so low if the radio is decoding the digital stream.

I would think that the audio levels would be encoded as part of the digital stream.

But maybe I don't have a good grasp on the problem

AD7VB
Posts: 4
Joined: Sat May 04, 2019 5:19 pm

Re: ZUM Radio MMDVM-pi audio issuses

Post by AD7VB » Tue May 07, 2019 1:46 am

As an update I seem to have it working with some further tweaking

Thanks for the help

73
Todd
AD7VB

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