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94 February 2006
We had a large RadioShack antenna with a rotator on our roof for more
than a decade which worked well. We
have done some remodeling and
decided, while we had it down, to
replace it. So, last Fall, we put up a new
RadioShack long range VHF/UHF VU-
190 antenna and rotator.
The new equipment worked adequately all Winter (but never quite as
good as the old one). Around April or
May, I noticed that the reception for
the higher numbered UHF channels
seemed to be getting worse. During
Summer, TV watching was a very low
priority, but, this problem seemed to
continue to worsen.
Thinking about it carefully now,
last Fall we got good to fair reception
on channels 36 and 29 and excellent
reception on channels 23, 19, and 17.
Now it has changed to fair reception on
channel 23 and passable on 17. All the
others are basically unusable. Clearly,
something has changed as the temperature and weather are similar now to
when the antenna was installed.
The antenna has a matching transformer connected to RG- 59 coax cable
mounted directly to it and potted in
RTV. The RG- 59 leads directly to the
basement and is connected by a
grounding block to a water pipe for
lightning arresting. From there, it goes
to a distribution amplifier and on to
VHF reception has not changed
since installation and remains very
good. The antenna and cabling appear
good and show no obvious effects of
weathering or other factors. Any ideas
in locating and curing this problem
would be greatly appreciated.
#2061 Bill Rauch, Hamburg, NY
I am looking for an easy build it
yourself receiver to pick up the 60 kHz
signal from WWVB. I live in the
Pittsburgh, PA area and I have a few
atomic clocks that never receive the
updates for some reason. I would like
to hear or at least see the pulses via an
LED indicator just to see if the signal is
really there. Any ideas from the forum?
#2062 Joe Reed, Pittsburgh, PA
I have a 30mm mechanical watch
that has, unfortunately, become magnetized. Will the Velleman mag/demag
work to remove the magnetism? Also,
is the slot large enough to accomodate
a 30mm watch?
#2063 Robert Jacobs, via Internet
[#11058 - November 2005]
I am using an Apple Macintosh
CRT Studio monitor coupled to a desk-top PC.
There is some "squiggle" through-