I likewise suffered a "world of hurt" on my MFJ259B when the local 10KW AM
station opened up less than a mile from me on 1620!!
I built a 9 section high pass filter from the October 1983 QST pp 17-19.
It allows reasonable measurements as long as they are near 50 ohms. Much
different impedances show increasing errors as you go away from there.
I also use it in the feedline of my RX antennas to keep the garbage down.
73 Don K5AQ
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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