[Lf] Loop antenna help please.....

[Larry Kayser]

Greetings All:

I am having a very hard to trying to make a single turn loop antenna, 6 ft
in diameter, work properly.  I am using a wide band preamp and about 200 ft
or more of coax feeding the loop.

It is not that the loop does not work, but it does not work so that I can
hear the AMRAD beacon on 136.745 kHz.

The loop does work, I heard DCF39 on 138.83 kHz last night, heard them very
loud, but....

The loop is mounted on a pole some 12 feet high, ie the bottom is about 6 ft
high.  the pole is lashed to a fence post, the fence post supports a long
run of steel page wire fencing the surrounds the farmers property behind my
winter location.

Is there a chance the steel fence is interfering with the loop when it is
parallel to the fence, ie in the direction of the AMRAD beacon?

The loop is very nearly at 90 degrees to the fence when the loop is aimed at
Europe.

If anyone has knowledge in this area please let me know about it.  The
inability to duplicate the results of my peer in Southern Ontario is
bothering me.  Could there be a large null in the pattern of the AMRAD
antenna?

Input will be appreciated...

Larry
VA3LK