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| To: | [email protected] |
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| Subject: | Re: LF: Lazy Man's CW made it to Venus and back |
| From: | Piotr Młynarski <[email protected]> |
| Date: | Fri, 27 Mar 2009 16:07:37 +0100 |
| In-reply-to: | <[email protected]> |
| References: | <[email protected]> <[email protected]> |
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| Sender: | [email protected] |
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Dave Pick wrote: How many miles per Watt is that?!! Dave 'YXM Hi Dave , LFby the time of amsat-dl experiment the distance between Earth and Venus was abt 45 milions km ( 45*10^6 km) so it takes twice that distance to "see" the reflected signal , therefore, it takes roughly 300 sec or 5 minutes of 'waiting' :) ( speed of light 3*10^5 km/sec) and as Wolf, dl4yhf said it was 5 kilowatt tx power thus making 18 000 km per watt btw, it seems to be of the same order as the best wspr HF beacon rx on earth :)
73, peter, sq7mpj
qth: lodz, poland /jo91rs/
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