Discussion in 'Ham Radio Discussions' started by ON6KE, Oct 24, 2018.
did anyone ever work EME with a 6 or 2 m Moxon? Results?
73, good DX
With only 5 dB? Not likely.
You might be able to stack a few Moxons to get the kind of gain you would need. The footprint might be more compact than that of larger yagis, if that helps.
The moon's albedo is quite low (12%-ish), and the surface is rough, with generally non-conductive materials (at least at the places checked by the Apollo missions and by robots). Even neglecting the (considerable) path loss, the reflection loss by itself is rather high.
Given the allocations available to US hams, I'm surprised there aren't more people doing laser-based EME...
Higher frequencies help as antenna sizes get smaller as frequencies go up, but you have to balance that against the increased difficulty of generating high power at higher frequencies.
I think 70cm is a good compromise band for EME, but it doesn't seem to be as popular as 2m, so there are fewer people to work.
The RF albedo is a little lower at 6.5%. But the diameter of the moon gives you about 115 dB of "gain". When the beamwidth of your antenna becomes less than the angular diameter of the moon (about 1/2 degree), you start to lose some of that "reflection gain". So unless you can find one of NASA's retroreflectors, laser EME isn't effective.
Lets place a repeater on the moon
Things might get sticky when trying to meet the control operator requirements... Lol
Just think of it as a satellite on a satellite.
Seems a bit fanciful, eh!
Isn't something like a 10deg beam width needed?
Aswell as about 25dbd?
And really close to one kw TX power?
We need more power, I want to bounce off Jupiter's storm...