CI-V Modul for Icom Radios

There are hundreds of Icom CI-V level converters on the web, here is another one.

Wireless Radio Data Transfer with TX433 and RX433

Wireless data transfer with these cheap modules from Velleman or QualityKits. This first prototype uses two breadboards. One sending and one receiving. My aim was to achieve a protocol with which transmitting and receiving data is pretty much reliable. The future setup will have full two-way communication with CRC and adjusting baud rates if needed.

Homebrew QRP TRX

a RF transceiver for portable use.

SSCW 702 SSB/CW 2m & 70cm duoband transceiver (part II)

SSCW 702 SSB/CW 2m & 70cm duoband transceiver (part V)

with article: Feeding parabolic dishes with horn antennas (part II)

SSCW 702 SSB/CW 2m & 70cm duoband transceiver (part VII)

SSCW 702 SSB/CW 2m & 70cm duoband transceiver (part III)

SSCW 702 SSB/CW 2m & 70cm duoband transceiver (part IV)