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| To: | "[email protected]" <[email protected]> |
|---|---|
| Subject: | RE: LF: VLF_8.79 kHz |
| From: | Jacek Lipkowski <[email protected]> |
| Date: | Tue, 23 Feb 2010 09:48:43 +0100 (CET) |
| In-reply-to: | <BF4A524700075746A6467658DFC7102C1286AD4069@ICTS-S-EXC2-CA.luna.kuleuven.be> |
| References: | <32098189.1842344.1266827344324.JavaMail.fmail@mwmweb080> <38A51B74B884D74083D7950AD0DD85E82A1B04@File-Server-HST.hst.e-technik.tu-darmstadt.de> <[email protected]>,<38A51B74B884D74083D7950AD0DD85E82A1B06@File-Server-HST.hst.e-technik.tu-darmstadt.de> <BF4A524700075746A6467658DFC7102C1286AD4069@ICTS-S-EXC2-CA.luna.kuleuven.be> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
On Mon, 22 Feb 2010, Rik Strobbe wrote: I just did a simple test: I took 2 old LW ferrite antennas and brought them to resonance at 1.5kHz [...] Solid copy in WSPR, over a distance of 15m. [...] now try to repeat the same test with both antennas outside. you will find that the coupling to wires within your home enhances the signal, this principle is used in mine comminications on lf. you should still be able to span 15m, but the signal should be much weaker. btw, this is one route that you can take to transmit vlf, but coupling your transmitter to big commercial strictures might be illegal (hint :) VY 73 Jacek / SQ5BPF |
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