Projects

1200 bps Bell 202 RF modem with open squelch carrier detect, clock recovery, HDLC decoding/encoding, and a KISS format serial interface. ZIP file contains all source as well as Acrobat format user and technical guides. KS12V10.ZIP (135K)
For the paranoid, a simple one chip watchdog timer circuit which will reset the DSP-93 if either radio port PTT stays active too long regardless of the jumper polarity settings. watchdoc.pdf (6K) (documentation), watchpcb.pdf (20K)(PCB Layout), watchsch.pdf (28K) ( schematic).
The SSTV1 Modem software is an AFM modem that runs on the TAPR/AMSAT DSP-93 hardware platform that can be used to receive and transmit Slow Scan Television(SSTV) signals. ZIP file contains all source as well as Acrobat format user and technical guides. SSTV11.ZIP (156K)
The TIC(Totally Insane Clock) software is a software Cuckoo Clock that runs on the TAPR/AMSAT DSP-93 hardware platform that uses WWV shortwave signals to decode and set the time of day. ZIP file contains all source as well as Acrobat format user and technical guides. TIC10.ZIP (183K)

Windoze Sound Card Projects

The WSCGen program WSCGenexe190.zip (115K) is a simple signal generator using the PC soundcard to output continuous tone, CW, SSTV, AO-40 telemetry, and PSK31 test signals with variable AWGN. It can 3^rd and 5^th order IMD to the PSK31 signals. The program will also output to a RIFF .wav file. Documentation is scarce but the interface is simple. Full VC++6.0 project source code is also available to play with. WSCGensrc190.zip(183K)

RTTY and MFSK16 code added by Oleg Skydan,UR3IQO Thanks Oleg!