Hi,

> >For 1200 Baud packet radio FSK modems
> >there are 2 ICs widely used:
> >
> >the TCM3105 from Texas Instruments ( http://www.ti.com )
> >and the 7910 from AMD ( http://www.amd.com )
>
> Unfortunately, both the 3105 and the 7910 are obsolete, and getting
> difficult to find. A better bet (and technically much more interesting)
> is to get hold of an Analog Devices EZ-KIT LITE DSP system (about $80),
> and run 1200 and 9600 baud packet modem software on this.

I have a few AM7910 types available (used)  check out

   http://www.ip.co.za/people/kalle/sirplus.htm#amat

Cheers
--
Kalle Pihlajasaari   kalle@ip.co.za   http://www.ip.co.za/ip
Interface Products   P O Box 15775, DOORNFONTEIN, 2028, South Africa
+ 27 (11) 402-7750   Fax: 402-7751    http://www.ip.co.za/people/kalle

DonTronics, Silicon Studio and Wirz Electronics uP Product Dealer