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[aprssig] RFM22B UHF Transceiver Module

John Wiseman john.wiseman at cantab.net
Tue Dec 11 23:03:17 UTC 2012


Bob.

Depends what you mean. The interface into the TNC from the application is
ax.25. The on-air modulation and packet formats are not the same as current
TNC's. So you need an RFM module at each end of a link, but it should work
with any KISS-enabled application.

John

 

-----Original Message-----
From: aprssig-bounces at tapr.org [mailto:aprssig-bounces at tapr.org] On Behalf
Of Robert Bruninga
Sent: 11 December 2012 21:51
To: TAPR APRS Mailing List
Subject: Re: [aprssig] RFM22B UHF Transceiver Module

On Tue, Dec 11, 2012 at 2:13 PM, John Wiseman <john.wiseman at cantab.net>
wrote:
> At the moment I'm running with 9600 GFSK, which is done by the module.

I assume you are not making it AX.25 compatible at this time.  That woule be
an entire additional leverl of effort to make it compatible with existing
APRS radios and their 9600 GMSK of AX.25...  bob

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