[Hammarlund] Hammarlund Restoration & Noise Level

[Jon Teske]

 Here in Metro Washington DC it is also hard to hear WWV on any frequency.  Now 
when I last tried I was just using 50-60 feet of random wire out the window. I have no 
antenna to compare with your set up.  I suppose one might be tempted to blame
WWV that our elected politicians don't know what time it is.  I suspect that is
not the root cause.  They should never have moved it out of Greenbelt, MD
(I was once located next to the Goddard Space Flight Center. (Actually it is
the other way around.  Goddard (which just celebrated its 60th Anniverary) was
built next to WWV.  Does anyone know why the east coast of the US is such a dead
zone for WWV?
Jon W3JT
 
 
-----Original Message-----
From: Frank Barnes <fbw4npn at gmail.com>
To: hammarlund <hammarlund at mailman.qth.net>
Sent: Wed, Jun 5, 2019 9:50 am
Subject: [Hammarlund] Hammarlund Restoration & Noise Level

I had posted earlier about restoring a HQ-129-X and how much I liked it.
 But the QRN noise level was intolerable at my location, wiping out almost
every station.

Antenna in use was a ~400 foot low elevation random wire snaked in a rough
"J" shape through the woods behind my house.

I just added another 100 feet of wire to it and converted it to a
roughly-shaped LOOP antenna, fed with 450 ohm twinlead.  Bingo!  The
noise disappeared almost completely and I now have dozens of stations to
choose from.

Horizontal loops are known to be less responsive to radiated interference
from various devices, and noise in general, but I did not realize how much
difference one would make.

I can tune in CHU on 7.85mhz in the morning and the receiver will sit on it
all day without drifting, after warm-up.  CHU is in Ottawa.  Oddly, I can
almost not hear WWV from Fort Collins, CO,  on 10mhz...very weak and
sometimes not at all.  I can't imagine that the "loop" is directional.

I think that even a 100 foot loop would perform well.  Receiving - only,
of course, not for transmitting.  I'm happy with the HQ now.
Frank
W4NPN

-- 
Frank Barnes
W4NPN
Chapel Hill, NC
Grid Square FM05
Cell 919.260.7955
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