[Xastir] Thanks for the info !

[Kurt A. Freiberger]

Curt, WE7U wrote:
> On Wed, 25 Jun 2008, Chris Moulding wrote:
> 
>> Many thanks, Bob for your detailed clear explanation of the
>> situation regarding modems. It looks like my best option is to
>> find a suitable KISS modem circuit to convert the data on transmit
>> and receive. It would also make it compatible with all APRS
>> programs.
> 
> FWIW my first entry into packet was an XR2211 hooked to a radio's
> speaker jack and a uP interrupt pin.  I coded the receive routines
> and interrupt handler in assembly, ran them inside a Forth
> interpreter.  

Damn, that's hard core!!!!

Hmmm, wonder if there's a VMware image for Forth?


I also computed the CRC16.  I wouldn't recommend doing
> it that way, but it did work.  That was on a 0.79MHz 6803 as I
> recall.  I didn't do transmit on that setup, only receive.  That was
> in early '85 I think.
> 
> All of that is taken care of if you start with a KISS TNC.  The
> Tracker2, the OT1+, the TT4, and the TNC-X can all do it for very
> small $$.  Some of them may be able to do 300 baud as well.
> 

-- 
Kurt A. Freiberger     Austin, TX	kurt at badgers-hill.net
Amateur Radio Callsign WB5BBW  		AIM Handle: WB5BBW
        "Reputation is what other people know about you.
            Honor is what you know about yourself."
         - Lois McMaster Bujold - "A Civil Campaign"