[Elecraft] K3 CW rough tone

[Reinaldo Leandro]

While checking with a local ham CW on the 10 meters band, we found that the
tone at his receiver was no pure it sounded rough, only on this band, the
other HF band were OK. After discarding SWR, ground, paddle cable and other
connected cables I found that the problem is with the RS-232 cable
(connected at the radio port and connected or not to the computer). I
installed a couple of split ferrite beads and the problem was cured.
Unfortunately I do not have another cable of different length, the actual
length is 72 inches.

 

73

 

Reinaldo, YV5AMH