From OM5MR's workshop



Audión z Pacákovej knižky "Škola radiotechniky" z roku 1958
Regen receiver inspired by Miroslav Pacák's book (1958)





Adaptér na prevádzku F2 z diskrétnych súčiastok
Interface for F2A emission (Moduleted CW) from discrete components


Published in Bulletin "OK QRP INFO" Nbr.114


Jednoduchý Jambický kľúč z ATTINY45
Simple ATTINY45 Iambic keyer

keyer_45.hex W3Schools
eep_file_generator_script_om5mr.xlsm W3Schools

The speed can be setup by long press of function SW (dit/dash paddle inc/dec the speed). For short SW press the EEPROM content will be sent. The speed & sidetone frequency is a function of internal oscillator frequency (may vary depending on factory setup for each chip, temperature & power supply).