[NLRS] Wanted: 10 GHz dish feed

[Donn, WA2VOI]

If you have a chunk of WR90, a penny feed should do a respectable job. 
I'll check to see if I have some in case you don't.

It will need optimization, but thats a minor job.  Coverage of the 
dish can be (somewhat) controlled by bending the "wings" of the penny 
feed in or out.  A tuning screw centered on the "penny" extending into 
the waveguide can help with SWR matching.  A sharp point on the end of 
the screw helps.

I have one made up for a model, if you're interested in looking at it. 
Coffee ?

73 Donn
WA2VOI/0

----- Original Message ----- 
From: <w0zq at aol.com>
To: <nlrs at mailman.qth.net>
Sent: Saturday, June 29, 2013 3:49 PM
Subject: [NLRS] Wanted: 10 GHz dish feed


>
>
>
> I have a 23" center feed (not offset) aluminum dish.  Measurements 
> have the dish depth at 3.75" which yields a focal distance of about 
> 8.8" and a f/D of about 0.38.   The dish has a hole through the 
> center making it easy to route the feed through the dish.  Any ideas 
> about a quick and cheap feed?   Its not for EME use, so I don't need 
> it optimized .... I need it cheap and quick.  Anyone have something 
> available?
>
> 73, Jon
> W0ZQ
>
> See you at the 47th Central States VHF Society Conference, July 
> 25–27, in Elk Grove Village, IL
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