[amsat-bb] Re: Lunar Architecture Moon Base

Nate Duehr nate at natetech.com
Fri Dec 8 13:26:41 PST 2006

Jason White wrote:

> The thread on a lunar based transponder has me wondering.. How were the 
> comms with the Apollo missions done? What frequencies/modes? Did 
> amateurs and utility listeners of the time copy much of anything from 
> the moon while man was there? Did they have these same problems or did 
> the fact that Eagle was in orbit solve them?

Uhhh, both.  :-)

Digging (real deep) through the links to the books for sale, videos, and 
what-not on this website will yield tons of information -- I found a 
complete diagram of the frequencies used, etc... way down in the links.

Wish I'd have bookmarked that one... but it was just a one-time 
web-spelunking for fun.


> I've heard the crackly "That's one small step.." recordings, and it sort 
> of sounds like SSB, but I had never really thought about it before. Now 
> that I think about it, copying that signal would probably have been the 
> rarest utility DX ever!

Not too bad, really -- just a lot of stations on the ground to deal with 
  the rotation of the earth and the fallibility of the hardware of the day.

The site above has a whole lot of the story of that day's comms, 
including recordings of the back-channel comms between Houston and the 
tracking stations.  Nifty site.

Nate WY0X

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