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Re: [TowerTalk] Fwd: Fwd: RG-149: 50 ohm/70 ohm - does it matter?

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Fwd: Fwd: RG-149: 50 ohm/70 ohm - does it matter?
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Mon, 16 Dec 2013 10:41:30 -0800
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 12/16/2013 10:36 AM, n8de@thepoint.net wrote:
My comment was intended to indicate that YAGI antennas can easily be modified to 75 ohm feed impedance.

Yep.

IMO, 50 ohms was an arbitrary decision made by the first designers of solid state transceivers, whose primary experience was design for 2-way radio, where 50 ohm antennas were the standard. I don't see it as a bad choice, since the electrically low dipoles that most hams are able to install are closer to 50 ohms than 75 ohms.

Way ahead of you on wire antennas and verticals

I knew that. :) Comments were for others who are not.

73, Jim
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