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Re: [TowerTalk] Inverted Vees

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Inverted Vees
From: Kim Elmore <cw_de_n5op@sbcglobal.net>
Date: Tue, 16 Jun 2020 21:58:35 -0500
List-post: <mailto:towertalk@contesting.com>
A brief note on my experiences on 75-80 m: I have K9AY receive loops, a F12 Sigma 80 OCF vertical dipole, and an inverted V with the apex at about 40 ft and the ends about 10-12 ft above the ground. In my experience, any of these antennas can be best for receive -- it depends on the day. Often, the K9AY loops are quieter, but not always and the difference can be striking between antennas. For transmit, the inverted V wins hands down for anything inside of about 600 mi or so. Within that same range of about 600 mi, the Sigma 80 is always much worse as a transmit antenna. However, on DX, the Sigma 80 is far and away the better transmit antenna.

For receive usually, but far from always, the K9AY loops are best. But I always check all the antennas for rx effectiveness and choose the best one.

Kim N5OP

On 6/16/2020 1:06 PM, Wes wrote:
My RX antenna is my TX vertical too. Conventional wisdom says you "have" to have a receiving antenna and a vertical TX antenna to work DX. I worked my first 80 countries or so with an inverted-vee, 45-feet high at the apex and ends about 6' high.  Then I installed a 55' inverted-L and worked another 60 or so.  Am I a top gun?  No, but my goal of 9-band DXCC from one location is achieved.

Wes  N7WS

On 6/16/2020 5:34 AM, dj7ww@t-online.de wrote:
No, my best 160m receiving antenna is my vertical.
Very weak signals are not audible on my receiving antenna.
My receiving beverage antennas 120-160m long are only good for directivity
like suppressing qrm.

73
Peter

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Kim Elmore, Ph.D. (Adj. Assoc. Prof., OU School of Meteorology, CCM, PP SEL/MEL/Glider, N5OP, 2nd Class Radiotelegraph, GROL)

/"A great second violinist plays second fiddle to no one." //– Robert C. Marsh, Chicago Sun-Times./

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