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| To: | [email protected] |
|---|---|
| Subject: | Re: LF: Transmitting with a small ferrite antenna |
| From: | John Rabson <[email protected]> |
| Date: | Wed, 25 Jul 2018 08:02:19 +0200 |
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| In-reply-to: | <[email protected]> |
| References: | <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
Thank you, Roman. > On 24 Jul 2018, at 21:33, Roman <[email protected]> wrote: > > Hi John! > > VY glad about that info was interested for you! > Alexander RN3AUS make an experiments with 11 Hz here, but in near zone. Not > so long distance. > This is experiment and joy-toy, but no communication for caves -) > > If I know any news about VLF communication for caves here - I let you to know! > > 73! > Roman > >> Roman, >> >> Many thanks for pointing these out. Some aspects of the French experiment >> were also described in CREGJ 89 and 92. >> >> FERRA was also mentioned in CREGJ 89. >> >> John Hey (SK) would be delighted for his cave radio to be described as >> “Professional”. It undoubtedly was of that standard, but was not >> manufactured commercially as we could not find a company to do that. Many >> people built Heyphones, over a hundred sets were built and approximately 80 >> were built by John himself. >> >> 73 John F5VLF |
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