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| 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]> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
| User-agent: | Mozilla/5.0 (X11; Linux i686; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 |
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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