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Thread: 9600 bps packet with Motorola mobile

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    Default 9600 bps packet with Motorola mobile

    Anybody using a Maxtrac/GM300/M1225/CM300/SM120 or the like for 9600bps packet?


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    Look up on the googler, STM32-DVM MMDVM interface, not packet but same pins would be used if someone has interfaced it to one of the radio's you listed.
    Radio Referenced...Those who think they know it all are very annoying to those of use who do.

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    It's been many years since I messed with Amateur 9600 baud packet on a Moto radio but I seem to remember that we had to change out the IF filters in order to widen the bandwidth enough to correct for the group delay characteristics of the standard filter. That in addition to direct interface of the modem to the discriminator and bypassing all of the TX audio processing and limiter to get an essentially flat response to the FM modulator.

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    We did 9k6 packet on Maxar 80's way back when. I don't recall having to change the filters out but that's now ancient history.

    Might have a radio sitting on a shelf here somewhere.
    Cyrus

    Bubbles: I'd like to see that Red Blue Green c***sucker put one of those together, duct-tapin' it.