[time-nuts] nubie querie (Earth Venus Earth, done!)

Don Latham djl at montana.com
Thu Mar 11 19:33:22 UTC 2010


I think the Dutch have done EVE; seems something passed by on Moon-Net in
the past year...
Don

Dave Baxter
> Sorry, it's already been done I believe.
>
> http://freenet-homepage.de/dl4yhf/speclab/earth_venus_earth.htm
>
>
> Some years ago, like nearly 20, I helped some friends and built a 224
> element broadside colinear aray for EME.  It (eventualy) worked realy
> well.  Echoes could be heard under good conditions with 5W I seem to
> recall (and no computer driven DSP tools then.)
>
> We also did so far (as we know) the only mobile EME contact, between
> G8MBI/m and W5UN.   As a result, I think my Land Rover holds the world
> 2m mobile DX record (regardless how you calculate it.)  Also the World
> EME land speed record (45MPH).
> http://www.rfham.com/g8mbi/mbi.htm  and scroll down about 3/4 down the
> page.
>
> 73.  Dave G0WBX.
>
> Not sure about being a fully qualified "Time Nut", but a Nut none the
> less!  The sticker on the back door of the Landie these days also
> confims it.   "This vehicle may contain nuts"
>
>
>> -----Original Message-----
>> Date: Wed, 10 Mar 2010 14:32:33 -0700
>> From: David Forbes <dforbes at dakotacom.net>
>> Subject: Re: [time-nuts] nubie querie
>> To: Discussion of precise time and frequency measurement
>> 	<time-nuts at febo.com>
>> Message-ID: <4B980FF1.7040508 at dakotacom.net>
>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>> Hal Murray wrote:
>> >> This, and similar impressive accomplishments, has prompted some
>> >> lunchtime discussion at work (JPL).. One of us (N5BF) has been
>> >> contemplating what it would take to do an amateur EarthVenusEarth
>> >> (after some of his experiments doing EME with 5 watts)..
>> >
>> > Perhaps a better question is:  What is the bandwidth?
>> >
>> > What sort of signal do I have to receive in order to claim
>> contact?  Is one
>> > bit/blob of energy at the right time/frequency good enough,
>> or do I have to
>> > demodulate the signal and extract a few bits of data?
>> >
>>
>> Marconi claimed credit for the first transatlantic
>> communication by sending the
>> letter S in Morse code. That sounds like a fine standard -
>> one byte of data.
>> It's statistically significant.
>>
>> With regard to the restoration and use of a derelict radio
>> telescope for amateur
>> radio, that's a fine example of amateurs putting themselves
>> to a big task and
>> succeeding. I work on radio telescopes, so I know how big a
>> task that is.
>>
>> --David Forbes
>>
>>
>>
>> ------------------------------
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-- 
Dr. Don Latham AJ7LL
Six Mile Systems LLP
17850 Six Mile Road
POB 134
Huson, MT, 59846
VOX 406-626-4304
www.lightningforensics.com
www.sixmilesystems.com




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