[RFI] MFJ 75 amp switcher.

[W4ATK]

Before purchasing this unit I asked Steven Pan of MFJ if this unit was quiet. I was assured no problem.

Well I soon noticed a very raunchy signal that moved about the 20 meter band and eventually settled in about 14.070 MHz. Wonderful, as I enjoy PSK and the other digital modes.

The strange thing is, I cannot detect the noise if the switcher is on but not connected to any load. Once I plug it in to the power strip, then the signal shows up on the P3 panadapter and in the receive audio.

I believe it is being propagated over the power cabling and intend to try some clamp on ferries. Any other suggestions gratefully received.

Jim, W4ATK


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