I've used an LF Engineering L-400B active whip in the past and it would
pretty much out perform longwires less than about 1000 feet. IT's only
problem was intemod and overloading issues if MW stations were nearby.
Mine actually wore out due the intense UV from the S. CA and AZ sun. I
still have the electronic guts and should probably rework it for use
again. I do have the PAR Inc. high and low pass filters and they work
great on 50 ohm lines to eliminate intemod after a passive tuner.
Despite the local MW stations I don't have any problems at night and I
can force the situation most of the time during the day as long as
there are no amps in the signal chain.

Frank
Tucson




I have always had major problems with antennas longer then 100 to 150'.
The strong out of band MW signals even cause a R390 front end to fold.

Have you considered a low pass fitler to reject everything above
~500KKHz
before your tuner?

And as Burhans pointed out a "good" active antenna can often match a
long wire.
Will is having much better succes with his active antennas then the
~100'
long wire.

One winter, 1977-78 we had enough snow to last a lifetime. After 3
weeks with
3' of snow on the ground I gave up trying to erret a new antenna, I had
just gotten
married and had NO antenna. So I laid about 100' of #18 and it worked
fairly welll.

Let me do some more thinking.

Terry


Terry