W2KJ wrote
>The K2 sidetone is not as pure and "smooth" as the sinewave sidetone in my
>Argonaut V...
>This is really my only nit to pick on the K2...the sidetone
>generation....the rest of the radio is superb and my favorite portable rig.
For K2's with serial number > 3000 or upgraded earlier K2's, there is another improved sidetone circuit here:
http://www.raunvis.hi.is/~matti/TF3MA/sidetone_tf3ma.htmlIt is important to have a 47 mH inductor with the correct series resitance here, or to add resistance to it if it is initially too low.
I have done this mod and I can only say that it is well worth the effort even for the upgraded K2's.
73
Sverre
LA3ZA
Unofficial Guide to K2 Modifications
http://www.qslnet.de/member/la3za/K2/mod.html_______________________________________________
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