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Re: [TowerTalk] G5RV vs 40M dipole

To: towertalk@contesting.com
Subject: Re: [TowerTalk] G5RV vs 40M dipole
From: "Joe Subich, W4TV" <lists@subich.com>
Date: Mon, 27 Apr 2015 17:49:19 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>

On 2015-04-27 4:56 PM, Bry Carling wrote:
> Can you hear a difference of 1.2 dB on the other end?

Absolutely!  If the signal is at the noise level, 1.2 dB can make
the difference between no QSO and easy copy.

73,

  ... Joe, W4TV


On 2015-04-27 4:56 PM, Bry Carling wrote:
Can you hear a difference of 1.2 dB on the other end? That's about one fifth of 
an S unit.

Best regards - Brian Carling
AF4K Crystals Co.
117 Sterling Pine St.
Sanford, FL 32773

Tel: +USA 321-262-5471




On Apr 27, 2015, at 1:54 PM, "john@kk9a.com" <john@kk9a.com> wrote:

A 5:1 SWR on 10m fed with 100 feet of RG-213 will add an extra 1.2 dB of
coax loss.

John KK9A

To:    Al Kozakiewicz <akozak@hourglass.com>
Subject:    Re: [TowerTalk] G5RV vs 40M dipole
From:    Bry Carling <bcarling@cfl.rr.com>
Date:    Mon, 27 Apr 2015 12:50:33 -0400


As he stated though, the loss is often minimal.

Best regards - Brian Carling
AF4K Crystals Co.
117 Sterling Pine St.
Sanford, FL 32773

Tel: +USA 321-262-5471




On Apr 27, 2015, at 12:42 PM, Al Kozakiewicz <akozak@hourglass.com> wrote:

SWR is determined by the feed point impedance of the antenna and the
characteristic impedance of the transmission line. The tuner can't do
anything about SWR on that line, only match (hopefully) the radio's nominal
50 ohm impedance to whatever the conjugate impedance is at the radio end of
the transmission line.

Al
AB2ZY

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