"Owen Duffy" wrote in message
...
"David" wrote in
:

David,

If your tests are not exposed to temporal effects (eg comparing the R4
last
year with the MA5B now), then the reduction in S/N with the MA5B on
boresight is telling. Something is wrong somewhere. (A prophetic statement
I know!)

Some of the earlier suggestions remain relevant. Does the noise in a
battery powered receiver reduce significantly when you turn the power off
to everything in your own premises?

Owen


Sorry Owen. I forgot to put this in.
I have turned all power off to the house and ran it from a battery. There
wasn't a lot of difference.

Maybe its coming from a neighbours house close by or the overhead power
lines on poles that feed all the homes along this road. I noticed today
there are also some that feed power to the homes over the back as well. But
that doesn't explain the fact that I do not get the same noise from any
other antenna. All antenna tests were all done in the last couple of days.

If the choke doesn't work then I will bring the antenna back down and take
it apart and start a fresh rebuild.
The only thing I can think of that is different is that I used some special
grease from Vine Antennas on all the joints that was advertised for antenna
joints.

David