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Re: LF: NEW VLF antenna

To: [email protected]
Subject: Re: LF: NEW VLF antenna
From: "P. W. Schnoor" <[email protected]>
Date: Thu, 18 Apr 2019 17:37:05 +0200
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]>
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Hi Richard,

On 18.04.19 16:11, you wrote:
...
Friends are there any news? Home made new antenna??
...
Yes!

I removed the cases from some old VLF-crystals (got from ancient VLF-TX). Driving them with approx. 100 mW (those "bending" vibrators could handle that easily) I reached approx. 5 metres at 16.4, 17.2 and 20.8 kHz. Sending Morse code at normal speed was impossible due to > 0.5 sec. of relaxation time.
BTW: the range of the acoustic emission was at least twice of that :)

73 & Happy Easter,
Peter, df3lp

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