[amsat-bb] Preamps and Circular Polarization Switch.

[J Bennett]

I took a direct hit.  It disintegrated my 2m/70cm vertical.  It was 20 foot
long.  Now it is in 5 pieces in various length and the neighbor's lawn has
many piece of the radome. The tower is grounded with three grounding rods
that are connected to the service entry point on the garage.  That saved 6
different radio from any damage. It took out a power supply that wasn't even
connected to the antenna that took the hit.  I have polyphaser lighting
protection on all antennas.  It has been up for 20 years and this is the
first major damage.

-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces at amsat.org] On Behalf Of Glenn Little
WB4UIV
Sent: Sunday, June 28, 2015 10:10 PM
To: Jim Bennett; 'Amsat'
Subject: Re: [amsat-bb] Preamps and Circular Polarization Switch.

Number one on the list is a good tower ground bonded to the single point
service entrance ground at the house.
MIL-HDBK-419 addresses this very well.
When this is followed, you will have very minimum problems, unless, you take
a direct strike.
This can be minimized with static dissipators.
When was the last time you saw a FAA communications tower that took a hit
with any damaged equipment??

73
Glenn
WB4UIV



At 08:27 PM 6/28/2015, Jim Bennett wrote:
>Hey guys.
>
>
>
>I just took a lighting strike the other day.  Wipe out the big stick in the
>air.  Also took out one preamp and possible a circular polarization switch
>on the sat antennas alone with both PCs that I had, a power supply, plus my
>network.  The pair of KLM appear ok.  So I am going to redo my tower
layout.
>New coax(probably hard line), new preamps, new cp switch and new control
>cable to the preamps and CP switches. Rotor cables appear good, but will
>check to make sure.
>
>
>
>I put this system together about 20 years ago.  So I am starting out fresh
>trying to find the stuff.  Is Lanwear amps still available?  If not, what
is
>the next best. Are there any shelf available CP switches.  The ones I have
>were on the antennas when purchased.  And they appear home built.
>
>
>
>Any suggestions are appreciate.
>
>
>
>Jim
>
>Ke4kol
>
>
>
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---------------------------------------------------------------------------
Glenn Little                ARRL Technical Specialist   QCWA  LM 28417
Amateur Callsign:  WB4UIV            wb4uiv at arrl.net    AMSAT LM 2178
QTH:  Goose Creek, SC USA (EM92xx)                      SBE ARRL  TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"
--------------------------------------------------------------------------- 

_______________________________________________
Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
to all interested persons worldwide without requiring membership. Opinions
expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb