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Re: [VHFcontesting] A distance scoring contest

To: James Duffey <JamesDuffey@comcast.net>
Subject: Re: [VHFcontesting] A distance scoring contest
From: Dan Evans <dan.evans@insightbb.com>
Date: Fri, 13 Feb 2009 22:03:40 -0500
List-post: <vhfcontesting@contesting.com">mailto:vhfcontesting@contesting.com>
I have worked scatter with FSK441 with the Rover setup many times.  My 
usual setup on 2m is 10 element CC @ 20', with 160 watts.  This is 
pretty good up to 600 ~ 800 miles.

Never considered EME, though.  It would seem to me trying to handle an H 
frame would be a setup nightmare.  Being a solo Rover I always try to 
keep setup as simple as possible.  I currently run 3 bands [used to have 
a few years ago...]  all on one push up mast.  I drive to a site, climb 
in the bed of the truck, raise the mast, then get back in the cab of the 
truck and operate.  When it's time to roll, I lower the mast and go.  
Weight and manageability is always critical for a solo Rover.  I like 
big yagis so I can span the miles here in the black hole of the midwest, 
but I keep them under 12' each so I can still handle everything on my 
own.  I need to put up  a few pics of the latest version of the "no 
budget Rover", hi hi.

However, if you have a second set of hands and only plan to hit a few 
grids, this sounds cool:-)

73
Dan
-- 
Amateur Radio Emergency Service, Clark County Indiana. EM78el
K9ZF /R no budget Rover ***QRP-l #1269 Check out the Rover Resource Page at:
<http://www.qsl.net/n9rla> List Administrator for: InHam+grid-loc+ham-books
Ask me how to join the Indiana Ham Mailing list! 



James Duffey wrote:
> Marshall - Your EME rover scenario is very tempting. I may give it a go.
>
> I assume that you are using one of the WSJT modes?
>
> What kind of EIRP is necessary for a rover to make a couple of EME  
> contacts during a contest on a rising and setting moon?
>
> Let me cut to the chase, is EME possible from a typical rover running  
> say a Cushcraft 13B2 driven by the ubiquitous 150 Watt brick? Or a  
> pair of the 6 element WA5VJBs?
>
> Or is that long Yagi you talk about longer than the car?
>
> I love the WA5VJB cheap Yagis and have made lots of them. They have  
> good clean patterns and appear to have good gain for their length. So  
> with a 400 Watt Amp and the 4 - 6 element Yagis you have about 12kW  
> EIRP? I think that it is pretty straight forward to generate 3 kW EIRP  
> on two in a rover, but much more than that starts to complicate set up.
>
> What is the optimum height of an antenna to maximize ground gain?
>
> As you can see, this is intriguing to me. - Duffey
>
>
> --
> KK6MC
> James Duffey
> Cedar Crest NM
>
>
>
>
>
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