[NLRS] Dear Dishers

[Jon Platt]

Dear 10 GHzers.

Several weeks back, during Bloomingtons clean-up days, my neighbor =
across the street set out a microwave dish in their garbage pick-up =
pile.   I was over there in a flash, and in the good tradition of =
bartering, we traded "garbage".   The dish is an elliptical design, gray =
in color, aluminum, looks fairly flat, and is without any markings of =
any kind.   It measures 26" high by almost 24" wide with an off-center =
feed point that has a feed arm about 17" in front of the dish.   The =
mounting hardware is in good shape and it looks like it should be a snap =
to install on a tripod.

Is anyone familiar with this type of dish and have a suggestion as to =
how to feed it (for 10 GHz).   I do have a couple of the "small" 10 GHz =
horns .... I think that they are in the 8 or 10 dB range or so (they =
measure about 1" high by 2" long by 1" deep) ... quite a bit smaller =
than the 17 dB horns .... would these work as a feed for this dish ??   =
I suppose I would need a transition to mount to the backside of the =
small horn.   When I hold this small horn on the dish feed arm at what I =
think should be the feedpoint, it visually looks like it should/would =
illuminate the full dish.  Thoughts?

I also have an old style 18" dish (solid) that I could design my 10 GHz =
antenna around, but I would have to construct the feed point arm and =
dish mount ..... perhaps I can use some of the mounting hardware off the =
elliptical dish.   However it appears that most people are using bigger =
dishes (than 18").  Would it be better to go with this smaller, =
"classic" dish or should I plan my system around the elliptical dish =
discussed above ?

73, Jon
W0ZQ


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