I must have missed the posting .....What changes are being
proposed by the ARRL to change the licensing structure.
de Joel WU1F
>From aa7bg@3rivers.net (K7BG Matt Trott) Mon Feb 3 19:33:52 1997
From: aa7bg@3rivers.net (K7BG Matt Trott) (K7BG Matt Trott)
Subject: Alpha 374A-Good as NEW!!
Message-ID: <199702031933.MAA07497@sun.3rivers.net>
HOLY SMOKES!! This reflector is almost as good as a CW pileup! The amp is
now working fine within 45 minutes of my inquiry. Thanks to all for the
advice/comments. There was indeed a "bite" taken out of one of the caps--C42
to be exact (TUNE).
Wayne (N7NG) suggested the following procedure and by gum she now works
fine. He has a 78 and had done this once when a guest op goofed. If you own
one of these amps, put this in your files. Thanks again, a gazillion to all.
>The solution was quick and easy (for me), though it might depend on how much
>damage has been done. The capacitor damage was visible with the cover
>removed from the amp (POWER DISCONNECTED). The capacitor rotor was about
>25% meshed, and the arc was in this area. The metal was pretty well
>damaged, and it continued to arc even with a good antenna. What I did was
>to rotate the capacitor rotor until the other (non-damaged) side of the cap
>(rotor) was meshed with the stator. I used a visual estimate of where it
>should be, and it worked fine. Now the damaged part of the rotor is in free
>space! The damaged part of the stator doesn't seem to cause a problem.
>(Maybe it was only the combination of both damaged areas.)
>
>As far as I know the 374 is very similar to my 78, so it should be possible
>to fix your amp in the same manner. The proper fix would be to replace the
>cap, but it worked so well that I haven't bothered. I guess I should order
>a replacement cap for the next time...
What I did to get an easier guesstimate of where to readjust the rotor was:
--make a visual check of where the rotor and stator are currently positioned
(overlap)
--mark the metal on both sides of the screwdriver slot of the cap rotor with
a pen
--adjust the rotor until the screwdriver slot is perpendicular to the marks
you made (90 degrees)
--make a second visual check, should be same amount of overlap except now at
other side of stator
Thank you Wayne!
>From k1vr@juno.com (Fred Hopengarten) Mon Feb 3 19:53:42 1997
From: k1vr@juno.com (Fred Hopengarten) (Fred Hopengarten)
Subject: VHF/UHF TV Propagation Computer Pgm?
Message-ID: <19970203.144704.5495.43.k1vr@juno.com>
I represent (i.e., as attorney) a major contester who is trying to erect
a tower in a town hostile to towers.
I plan to use a new approach, an approach never tried before to my
knowledge.
I'd like to propose Rohn 45 to support a big VHF/UHF log periodic
rotatable array. Put that up. Wait a while, let the dust die down, and
then seek only to add a Yagi to an existing support structure.
A new FCC regulation, 47 CFR 1.4000, permits the erection of TV broadcast
antennas in a way which offers protection to the TV viewer which is much
broader than PRB-1. (Guess who has more clout in Congress, hams or TV
watchers? This regulation was crafted to aid small 12 GHz Direct
Satellite reception, but includes over the air antennas as well.)
However, I'll be forced to justify the height and antenna.
>From my past life in the cable TV industry, I recall that some antenna
companies know the location and ERP of every broadcaster in the country,
and make available a printout to cable TV operators which tells the CATV
company how big an antenna is required for good reception, and at what
height to use it. Is there anyone here on the contest reflector who
works for Channel Master, Scientific Atlanta, Winegard, or any other TV
yagi manufacturer? If so, please contact me directly.
The significance of this request is that contesters always want something
bigger and higher than mere mortal hams. If this approach works, I'll
let y'all know the steps to take.
Fred Hopengarten, K1VR
Six Willarch Road * Lincoln, MA 01773-5105 * 617/259-0088
e-mail: k1vr@juno.com or k1vr@k1vr.jjm.com
Big antennas, high in the sky, are better than small ones, low.
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