My intention is to publish in this way some my constructions, perhaps somebody finds it interesting... I try to put here all available information (I appologize if something is not perfect - I am an amateur...)
Atmel AVR projects
Direction indicator for antenna rotor.
New firmware for Chinese ADF4351 generator.
Geocaching PMR radio beacon.
QRP CW transmitter for QO100 satellite
GPS controlled 10 MHz reference generator
Interface between Yaesu Quadra VL1000 amplifier and Kenwood TS850 - band switching
Cheap LF DDS VFO for 136 and 500 kHz HAM transmitter
DDS VFO for HF QRP CW transceiver
Standing Wave Ratio (SWR) meter based on Atmel AVR Mega8 chip
HF + 50 MHz propagation radio beacon, CW and WSPR, DDS version
Antenna rotator controller AVROT
Morse Geocaching Travel Bug
Other projects
Simple DSP audio CW filter using ADAU1401
LED light chain QRM killer
High power low pass filter for 144 MHz PA
QCX single band QRP CW transceiver
Hermes Lite 2 SDR DDC/DUC transceiver
Mini keypad for FT2000 (replacement of Yaesu FH-2)
My PCB design of Si570 synthetizer
Simple CW-AFSK-FSK interface/switch for my shack
Antenna remote switch
Simple but reliable elbug
Assembled kit of Winkeyer2
Ultraviolet light for PCB production
Simple RF probe with high dynamic range using AD8307
Antenna rotator controller, based on Arduino
Interface for older Icom radios (converter from RS232 to 1 wire interface)
Repair of faulty transmitter of Wouxun KG-UV920P radio
Tools
Tools I use for AVR project
SOUTEZ UKONCENA