[Moon-net] QRO EME

[Pat Barthelow]

Thanks Miike, and others for responding,

I learned when I brought a guest into the N6IJ Club shack, that 40 years of 
listening on HF, builds a lot of expert system into the Wetware upstairs, 
such as noise blankers, narrow band fillters, etc...Hadn't thought of it 
before but I had a decent DX station on phone, about S-8, perfect copy... my 
non ham friend commented something to the effect,  llots of static, 
eh...anyway, points well taken, and rather  than extra enthusiasm with 
guests on first, (or even early) EME tries, we will have "the crew" there, 
fighting off Murphy...
Thanks..
73, DX, de Pat AA6EG aa6eg at hotmail.com;
Skype: Sparky599
Moon or Bust!--Jamesburg Gang Rides Again!

>From: "Michael R. Owen" <nlsa at nlsa.com>
>Reply-To: nlsa at nlsa.com
>To: Pat Barthelow <aa6eg at hotmail.com>
>CC: moon-net at list-serv.davidv.net
>Subject: Re: [Moon-net] QRO EME
>Date: Thu, 25 Jan 2007 17:59:31 -0500
>
>Pat -
>
>From my experience at VE3ONT (46m dish) in the late 1990's, simple link 
>budget calculations are sometimes misleading.  The clarity and 
>intelligibility of SSB off the Moon is disrupted by signal spreading due to 
>the fact that the Moon's spherical surface reflects at different times (the 
>middle is closer to Earth, the edges farther away).   Even with 1.5kW at 
>the feed of the 46m dish on 432, our own echoes, and those of other QRO 
>stations, were often hard to understand.  Non-hams, unaccustomed to hearing 
>SSB, would have has an awful time (and certainly not been impressed).
>
>The dish's beamwidth was so tight at 10 GHz that it illuminates different 
>topographic regions second-by-second.  Your beamwidth won't be quite so 
>tight on 5GHz, but it's still much less than the apparent width of the 
>Moon.  Consequently, super-tight pointing accuracy is needed.
>
>Also, if you are using circular polarization, remember that the return echo 
>will be cross-polarized.
>
>Don't invite dignitaries for your first try.  That's a gold-plated 
>invitation to Mr. Murphy.
>
>73,
>W9IP
>
>Pat Barthelow wrote:
>>Folks:
>>
>>Whle I HAVE "Paid My dues" on HF weak signal work, and quite enjoy pulling 
>>the signal (CW) out of the noise,  there, I havent been on EME, in a 
>>normal way, though I have heard recordings of QRP EME and attended the 
>>incredible Stanford Dish EME event some years back.
>>I need to get a feel for how easy it will be for a normal person  (Kids, 
>>not hams) to hear voice EME comms, considering a very QRO station here at 
>>Jamesburg.   Will we, and the Media be able to hear clearly Voice comms, 
>>on 1296 or above, considering we have 50+ db of antenna gain?
>>What will it take in terms of EIRP for the other station to be clearly 
>>heard?
>>Tnx,
>>73, DX, de Pat AA6EG aa6eg at hotmail.com;
>>Skype: Sparky599
>>Moon or Bust!--Jamesburg Gang Rides Again!

>Michael R. Owen, Ph.D.
>Northern Lights Software Associates
>http://www.nlsa.com
>