[aprssig] APRS on 70CM using a hundred "free" UHF radios (Robert Bruninga)

[John Gorkos]

Geez, that thread is basically a treatise on Why I Hate The Internet,
and Most Human Beings.  Just chock full o' love and help.

That being said, I just bought two of these radios on Ebay for $20.
We'll see what I can do with them.

AB0OO

On 9/24/18 12:52, John D. Hays wrote:
> https://forums.radioreference.com/motorola-forum/179932-motorola-vrm-650-a.html
> 
> On Mon, Sep 24, 2018, 12:06 radio nn4qq <radio.nn4qq at gmail.com
> <mailto:radio.nn4qq at gmail.com>> wrote:
> 
>     This EBAY post includes a few pictures
> 
>     https://www.ebay.com/p/Motorola-VRM-650-Data-Mobile-Radio-F3454a-VRM650/1311778416 
> 
> 
> 
>     On Mon, Sep 24, 2018 at 2:48 PM Ross Whenmouth <ross at topwire.co.nz
>     <mailto:ross at topwire.co.nz>> wrote:
> 
>         The VRM650 is an RD-LAP machine, configured ex-factory for
>         either 9.6 or 19.2 kbps (12.5 or 25 kHz channelisation
>         respectively).
>         I don't know enough about RD-LAP, but presumably, you will be
>         able to encapsulate AX.25 packets inside of RD-LAP packets?
> 
>         If the amateur community gets enough of these radios to make it
>         worth while, it is probably within the realms of feasibility
>         (with considerable effort) to reverse engineer the VRM650 and
>         write a "ham" firmware for it "from scratch" which speaks AX.25
>         (and doesn't have copyright issues with Motorola service software)
> 
>         73
>         Ross Whenmouth ZL2WRW
> 
>>         Apparently the Motorola VRM650 UHF data radio should be
>>         available for almost free by the hundreds.
>>
>>          
>>
>>         These are Motorola VRM650 modems which I think are a 40 Watt
>>         MCS2000 radio with a different faceplate and only a DB9 rs232
>>         port.
>>
> 
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