[Elecraft] Interesting K3 QRM problem

[Al Lorona]

This doesn't apply in Vic's case here, but his situation reminds me of yet another benefit of using a link-coupled tuner with balanced line feeding a horizontal antenna in the center.

A balanced link-coupled tuner turns out to be a high-pass filter, so while you're tuning it up on a ham band, it's rejecting stuff in the AM broadcast band.

When tuned on 80 meters, I've measured the 1400 kHz rejection of my tuner at about 40 dB. Forty dB makes a 50 kW signal sound like a 5 W signal. I might be in bad shape if I didn't have this tuner.

Another good thing to remember when planning an antenna installation.

Al  W6LX