ATU for 136kHz. Antenna connected to top of ferrite rod |
My conclusions are that an ultra-simple QRP approach to 136kHz TX is just not possible if one is to achieve useful results consistently.
Simple QRP projects, 10m, 8m, 6m, 4m, FT8, 160m, WSPR, LF/MF, sub-9kHz, nanowaves and other random stuff, some not related to amateur radio.
ATU for 136kHz. Antenna connected to top of ferrite rod |
As I have been away, I only returned to 8m WSPR TX under ISM rules (10mW ERP complying with IR2030) this afternoon. I am currently doing s...
1 comment:
Hello Roger !
Happy New Year !
You schould put the coil on the top of the vertical part of the antenna just before the capacitive hat.
Also, the wire you use is too thin, try with "Litz wire", I'm sure it will work beter. You can find those wires on AM radios on the ferrite antenna coil.
73, from Thierry.
F4EOB - CT2JTZ
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