Homebrew equipments of BA1RB

From 1980s, I DIYed several boxes of junks, including doorbell, FM transmitter, game box, cassette player, black and white television set, product counter, micro-computer controlled system, power supplier, single band ssb transmitter, digital controlled FM stereo radio..., here is some recent junks. :-)

TCM3105 Packet radio board

By using the TCM3105 made by Texas Instrument, I DIYed a packet radio modem, which allows me to exchange data through a tranceiver.

AD9850 DDS board

I bought an AD9850 at 1998 and made a DDS board which can directly output from 0--30MHZ, AD9850 is a simple 32 bit DDS chip, made by analog device.

1.2G ATV Transmitter

This ATV transmitter including an AV encoder and can modulate Audio and Video signal to 1280MHZ, PAL system, I tested once a time, significant!

Hamcomm Interface

Very famous interface for hamcomm and JVfax, by using this simple interface, novice can try data QSO such as RTTY, BAUDOT, CW and SSTV, FAX through a computer! It helped me to enjoy the happiness of data communication when I was very poor. :-)

Produed by Francis, [email protected]