What K9YC said. Years ago when the front of the receiver was a wide as a barn
door this was true, but with today's modern solid state receivers I don't
believe it is any longer the case. I have a Tennadyne LPDA into an Icom IC-756
(non Pro) and have never had a overload problem even when I lived in RF rich
Dallas TX. With the present state of the art equipment, I do not think you
will have a problem. Some one else stated "one boom - one feedline" and that
is the reason I went with a LPDA. I love having a gain antenna when the
DXpedition goes to 17M to avoid the pile-up.
Clint - W5CPT - Moderator Tennadyne Antenna Yahoo Group
----- Original Message -----
From: Mat Eshpeter
To: towertalk@contesting.com
Sent: 25 October, 2009 6:55 PM
Subject: [TowerTalk] Log periodic antennas and front end overload?
I have searched the Towertalk archives and read that log periodic antennas
can have the undesirable side effect of capturing too much RF; their
broadbanded capability results in all signals in the antenna's "passband" being
presented to the receiver. Strong out-of-band signals such as SW broadcast
signals, strong contest stations, etc. could lead to undesirable performance at
the receiver -- it is this issue that I am trying to quantify.
I am looking for solid factual experience from folks who have directly
witnessed how log periodic antennas can affect the front end of today's HF
transceivers. My ridge-top QTH will have a clear shot to the horizon in almost
all directions and I am trying to figure out if a log periodic will work for
me. The other option would be a multiband antenna like the Force 12 5BA or
similar.
thanks in advance,
Mat
KK1C
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