"dykesc" wrote in message
...
The manual on the MFJ 259b warns that strong local broadcast band rf
can cause problems with accuracy of the unit. The warning mentions
strong AM broadcast signals. A new tall tower near my house is
emitting a strong FM broadcast signal. When I hooked up my G5RV to the
frequency counter input on my 259b, it immediately locked on at
100.500 MHz. The signal is so strong that I can hear the station at
multiple frequencies when I tune across the FM broadcast band on a
small FM radio. Could this be interferring with my attempts at getting
reliable R-X SWR readings on my G5RV with the 259b?

One way to find out. Measure the SWR through a low pass filter that is meant
to be used at a transmitter output. These things usually start to roll off
at about 40 MHz, and will have around 80 db loss at 100 Mhz.

Tam/WB2TT