[160m] Receiver Front End Saver Question

[Pete Rimmel N8PR]

Does the preamp have a gain control?  If so, just keep it
lower than needed for the inside loop.  That should isolate
the rig and protect its front end.

73  PeteR  N8PR


----- Original Message ----- 
From: "Thomas Giella KN4LF" <kn4lf at tampabay.rr.com>
To: "a Yaesu E-Group" <yaesu at contesting.com>; "a 160 QTH
e-List" <160m at mailman.qth.net>; "a FT-1000MP eGroup"
<FT-1000MP at yahoogroups.com>; "a 1000MP QTH e-List"
<1000mp at mailman.qth.net>
Sent: Wednesday, November 10, 2004 12:06 PM
Subject: [160m] Receiver Front End Saver Question


I have the Mark V Field. I have been using a homebrewed 2
foot diameter unshielded indoor box loop for receiving and
have never had a problem with RF getting back into the
receiver to damage the front end, even though the transmit
antenna is very close by.

But now I have purchased the 8 foot diameter outdoor 160
meter coaxial magnetic loop antenna made by KC2TX for
receiving plus the KD9SV 160 meter preamplifier. I'm on 1/4
acreville and the loop will be mounted on a push up pole at
25 feet and unfortunately within 100 feet of the 160 meter
inverted L transmitting up to 1000 watts PEP. I now wonder
if I'm increasing the danger of damaging the front end of
the V Field and should I put a front end saver device in
line like the one KD9SV also makes?!

It seems that somewhere on an email reflector this issue has
been discussed in the distant past and I seem to remember
some saying yes use a front end saver and others say no the
auto switching circuitry in the Mark V will handle the
potential incoming RF. Any comments/personal experiences
would be much appreciated.

73,
Thomas F. Giella, KN4LF
Retired Space & Atmospheric Weather Forecaster
Plant City, FL, USA
Grid Square EL87WX
Lat & Long 27 58 33.6397 N 82 09 52.4052 W
kn4lf at arrl.net

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