Post #4259840
2026-07-31 00:54 UTC
Advice I wish I didn’t get with my General #hamradio ticket:
Random wire antenna
This should not be your first HF antenna. To use it you need an antenna tuner, and many starter SDR rigs have an ATU built in. In myself and others around me, the ATU gives a low SWR and the appearance of perfect operation, but you have no intuition for how much of your transmit power comes out as RF energy vs. heat
At that point there are a thousand points of failure you don’t know to check, so the first time you call CW to the void you have no idea if yuure holding the mic wrong, your rig is misconfigured, or if the band is closed
Work to minimize unknowns by making as many parts of your kit known quantities. This is why I wish someone told me to just get a pretuned 40m EFHW out of the gate
Replies (2)
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@macross@infosec.town 2026-07-31 02:07
@flyingsaceur@ioc.exchange calling CW might also be part of your problem. 😆
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@ozeng@aus.social 2026-07-31 13:15
@flyingsaceur@ioc.exchange an EFHW? How do you know if the balun is good? It might be as lossy as your random wire tuner, or worse! Ya gotta start with a dipole. 1:1 choke balun at the feedpoint. Or, you know.. just listen to the advice, nod, smile, and then do whatever the hell you want 😛