Sender: <marv@lancaironline.net> (Marvin Kaye)
To: lml
Date: Thu, 29 Aug 2002 08:46:20 -0400
Message-ID: <redirect-1713963@logan.com>
From: "C Krouse" <kc16@qwest.net>
References: <list-1713464@logan.com>
Subject: Re: [LML] Icom A-22, Antennas, CTAF Congestion
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Jim,

I think that you are safe using a single antenna with your A-22.  It's not
about whether or not the com ant. or the nav. ant. are going to hurt your
A-22.  The A-22 handheld was designed to use a single ant.  The isolation is
in the tranceiver that prevents transmissions from damaging your nav.
receiver.  I have to clarify that I don't know this for certain, but feel
fairly comfortable claiming it since most handheld com/nav transceivers
don't require you to change antennae to use each function.  When you are
transmitting, there is more than likely a RF switch that protects your nav
section.

As far as which ant. you use.....try the factory installed nav. ant. and if
it works.....who cares whether you use it or not?  The only thing that I can
possibly think of that will be affected is the other receivers in your craft
that are horizontally polarized.  They may be susceptible to interference
from transmitting out your nav ant., but that only requires a few tests in
order to validate.

Curtis Krouse


>
> Here is my question to those of you who know a lot more about radios than
> I do.  I have found that I can listen and transmit on the VOR antenna
> nearly as well as I can when the A-22 is hooked to the external comm
> antenna.  Will transmitting on the nav antenna hurt my A-22 in any way?
> If no damage occur, then I may just leave it hooked to the nav antenna all
> the time.  This leads me to want to know if the factory installed nav
> antenna in the wing tip of my Legacy can be used as both my nav and comm
> antenna for a low power handheld radio without causing any damage?
>
> Jim Thomas
> L2K @ maybe 50%
>