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EME on 11meters sked wanted

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  #1  
Old 07-22-2011, 08:15 AM
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Default EME on 11meters sked wanted


Hi guys,

There are a couple germans who did hear themselves a couple years ago with EME.
But sofar i havnt heard about anyone making a 2way qso (eme) with different countries.

Anyone willing to have a go at it..
pse mail me!

Kind regards,

Henry 19SD348
www.dx-antennas.com
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Old 07-22-2011, 11:17 AM
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Considering that you will need at least 30 dBd gain minimum, what kind of monstrous array are you planning to use?
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Old 07-22-2011, 11:19 AM
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And I don't think it's ever been done with voice. CW only.
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Old 07-22-2011, 11:42 PM
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Guys,

Thanks for those answers.

The gain minimum as stated is to my opinion overrated.
Have you got an idea how much 30dB actually is? And what you would need to get it?
Just to give a idea...thats at leasti in the direction of 50..60 times 6elements stacked.
It is know that about 14dBi would cover it. (not talking jo-gunn gain lol).

You can hear your own echo's using 5kw and boomlengths in the order of 20...30 meter
(60..100feet).
This although im certain one could do with less.

So, if one is capable of hearing his own echo's, you could make a qso with someone with similair equipment.

I wasnt talking about voice, but for starters JT65a for example.

There are quite some ways to calculate if the "equipment" and "path" is good enough for a qso.
Probarbly looking at a minium of a kw and boomlengths preferbly over 36 feet, but then again...who knows...with less.

Kind regards,

Henry 19SD348
All about antennas
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1W in a dipole will provide a qso. 100W in a antenna which is 1% as effective as the dipole will do the same. And thats not a good thing.............http://www.cb-antennas.com

Last edited by Henry HPSD; 07-22-2011 at 11:53 PM.

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Old 07-23-2011, 04:51 AM
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Quote:
Originally Posted by Henry HPSD View Post
Guys,

Thanks for those answers.

The gain minimum as stated is to my opinion overrated.
Have you got an idea how much 30dB actually is? And what you would need to get it?
Just to give a idea...thats at leasti in the direction of 50..60 times 6elements stacked.
It is know that about 14dBi would cover it. (not talking jo-gunn gain lol).

You can hear your own echo's using 5kw and boomlengths in the order of 20...30 meter
(60..100feet).
This although im certain one could do with less.

So, if one is capable of hearing his own echo's, you could make a qso with someone with similair equipment.

I wasnt talking about voice, but for starters JT65a for example.

There are quite some ways to calculate if the "equipment" and "path" is good enough for a qso.
Probarbly looking at a minium of a kw and boomlengths preferbly over 36 feet, but then again...who knows...with less.

Kind regards,

Henry 19SD348
All about antennas


Well fine business then good buddy. Just as long as you understand what all is involved. And it needs to be on UHF or up too. Shucks.....all of us on here have such stations with well over 1KW and friggin' huge stacked arrays on azimuth rotors and we love that morris code too so name time and freq and we'll hook up.

Here's a pic of my little 'tenna. Forget that other callsign somebody stuck on there, that's not right. Just my little starter setup. But ya gotta forget 11 meters now. Never happen.
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Old 07-23-2011, 04:52 AM
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EME on 11m, even if it was possible and I am not convinced it is yet, would have to be done when there was no ionospheric charging whatsoever otherwise the signal would be reflected back to earth before it even left for the moon and anything left would be reflected back at the moon.
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Old 07-23-2011, 10:05 AM
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Maybe at the very bottom of the solar minimum,but, as already said, it's very unlikely to happen on 11 meters. And you would need LOTS of power and high gain antenna arrays.
(like those in the post above.......but MUCH larger) Get a Amateur radio license (tech is all you need for VHF-UHF) and give it a whirl , with a much smaller setup that is easier to get going. It can be a load of fun hearing your signal bounce off the moon.
trucker

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Old 07-23-2011, 11:18 AM
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Quote:
Originally Posted by Wire Weasel View Post
And it needs to be on UHF or up too. .
UHF or up?? There have been many successful contacts on 6m and 2m is, or at least was, the most popular band for EME. One thing to remember is that as the freq goes down the more power that is required. Conversely, 10-20 watts on 10 GHz into a medium sized dish of about 2 or 2.5 meters in diameter will yield great results.
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