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

[Steve Krull]

Germans actually. See http://www.eham.net/forums/Satellites/2020 for 
some details. The receive preamp was not mentioned in this article but 
was a low noise design  by Sam Jewell, G4DDK.


On Thu, Mar 11, 2010 at 1:33 PM, Don Latham wrote:

> 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 Subject: Re: [time-nuts] nubie querie
>>> To: Discussion of precise time and frequency measurement
>>> 	
>>> Message-ID: 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
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> www.sixmilesystems.com
>
>
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