[Elecraft] K3 - ferrite bead on power lead

[Monty Shultes]

After 10 days with my K3 I am still learning and still smiling.

I was getting reports of mild to severe RF on my SSB audio.  Since I was having trouble with my old MC-60 mic, I assumed it was the cause.  Not so.

I have an old brute force power supply.  I use an open-wire fed antenna connected to a balun in the shack.  When I monitored the voltage reaching the rig, the reported level varied wildly when in transmit mode.  Putting a fat ferrite toroid choke on the power cord has solved the problem.

FWIW.