RETRO TX QRP - new version
Because of the fact that the new (WARC) band of 60 meters has not been allowed by the Czech Authorities for OK HAMs I decided to retune the TX from 5,5 to 7 MHz. Now I operate (from time to time) also on 7 MHz band with the RETRO TX QRP (power 5 Watts). You can see the Block Diagram on Picture No.: 36 in the Photogallery. The TX produces CW signals on 3500 - 3570 kHz and on 7000 - 7040 kHz now. I also use my long wire antenna (LW) for QRP operation on these HAM bands (3,5 and 7 MHz).