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[aprssig] RFM22B UHF Transceiver Module

Steve Noskowicz noskosteve at yahoo.com
Wed Dec 12 05:22:19 UTC 2012



RF modulation difference aside ... Don't know it I'm following this 100%, but since it is a TRANSceiver, this means it can listen for busy channel, right?

73, Steve, K9DCI  


--- On Tue, 12/11/12, John Wiseman <john.wiseman at cantab.net> wrote:
> 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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