I agree with Chuck here: the more you use the rig on the air, the easier the whole zero-beating process will be for you. It's an instructive game.
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Alas, you don't need to literally "zero"-beat on a station outside of a packed contest, as nobody will beat you up if you are 50 or 100 or even 150 Hz off their TX QRG. That's why any CW rig has that nifty 'RIT' function, in the end.
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YMMV here, but running an audio spectrum analyzer on a mobile phone that costs 1k$, just to zero-beat a CW station on a ham rig that costs 100$, well, that looks like an extreme overkill to me.
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Hams have communicated successfully on CW for a century, well before cell phones were invented. What do we do if our phones gets out of battery? We stop playing radio??
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Ham radio is fascinating to me because it removes complications, rather than keeping adding them...
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My2Cents
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72/73 de Enzo M0KTZ
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