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Re: VLF: Ground loop improvements and test carrier...

To: [email protected]
Subject: Re: VLF: Ground loop improvements and test carrier...
From: DK7FC <[email protected]>
Date: Wed, 03 Apr 2019 21:37:57 +0200
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RR, but for the 2.12 A i needed 415 W TX power and for 2.74 A i needed 515 W. So there is still an improvement of 10 * lg(515/415) = 0.94 dB.
Further improvements planned...

 Tnx & 73, Stefan

Am 03.04.2019 20:57, schrieb Paul Nicholson:
Stefan wrote:

> Earlier that day, the same test was done at 5170.1 Hz.
> But there, the antenna current was different:

Received -

 900m: T2019-03-31_12:31,+19m at I = 2.74 A: 0.50fT  S/N -6.74dB/1Hz

 1130m: T2019-03-31_12:57,+31m at I = 2.12 A: 0.51fT  S/N -8.22dB/1Hz

So 0.51/0.50 = 1.02

and

 1130/900 * 2.12/2.74 = 0.97

so this time just a little more gain than the length increase.

--
Paul Nicholson
--





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