Dave

Have you considered using a USB wireless adapter as the feed so the line
loss might be lower?
I have built some illuminators for the off set feed satellite TV dish
using a USB wireles adapter. But, I dont yet have any definitive results.

Jerry



"DaveC" wrote in message
news.net...
DirectTV 20" dish, offset fed, f/d~0.7, to be used for 2.4 GHz wlan link.

As I understand the issues, the best feed is one that -- for a given focal
length -- will "light" the dish with as spherical a wave as possible, that
has a broad enough dispersion angle to fully "paint" the dish without
picking
up off-the-edge noise.

I've looked at all types of feeds, from cantennas to bi-quads to patch to
dual-dipole. All have their pros and cons.

I'd like to hear from anyone who has done this before about what feed they
chose and why.

Thanks,
--
Please, no "Go Google this" replies. I wouldn't
ask a question here if I hadn't done that already.

DaveC

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