[aprssig] RFM22B UHF Transceiver Module

Andrew P. andrewemt at hotmail.com
Wed Dec 12 12:59:53 EST 2012

Ah, but wouldn't it also be nice to have the modules compatible with the thousands of already-deployed 9600 TNC's built into every Kenwood D710?

Of course, nothing stops us from having two different firmware build for compatible vs. advanced modulation schemes.

Just my $.02.

Andrew Pavlin, KA2DDO
------Original Message------
From: Bill Vodall
To: aprssig at tapr.org
Sent: Dec 12, 2012 12:54 PM
Subject: Re: [aprssig] RFM22B UHF Transceiver Module

> IMO, these modules will only be of academic interest unless they can
> be made to interoperate with existing equipment; I could live with
> 9600 baud only, not sure how other APRS users feel about it. If, on
> the other hand, we could get cheap 9600 baud transceivers out of it,
> it could be a game-changer.

Why do they have to be backward compatible?   I can't see any reason
to over complicate things if it isn't needed.  There's very little
existing 9k6 infrastructure and it would be so much better if we had
these cheap modules running at higher speeds maybe even with better

Yes - it would be nice to have 9k6 - but I'd rather have 19k2 or
faster.   It might even be possible to make these compatible with the
soon (I hope)  UDR56K radios.

Bill - WA7NWP

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