MØMCX

Amateur Radio Operator


2.4 link signal strength

I have a first class project in tow to put a 2.4GHz link in to the club about 4.5 miles away. I’ve just secured 5 grid dishes with 24dbi of gain for £125. What is a Fresnal zone and how do I spell it?

Anyway, there’s this great site to calculate the potential likelihood of succeeding in putting a link up between one site and another: http://www.atdi.uk.com/WebObjX/default.asp. It also gives you the dreaded Fresnel Ellipse data which I think I’m slowly starting to understand - essentially, you can block around 40% of the ellipse in one place and the link should still work, but no more. Google it for more.

January 19th, 2007 Posted by callum | Club | no comments

Photoblog

Since installing WordPress last night, I discover that maybe I’d prefer a photo blog (!) so I’m in between a rock, a sponge and a hard place, however not all is lost. Photon (see http://www.jillij.com/wordpress/?page_id=66) is a plugin to WordPress but it’s complicated, I need to install PHPWebGallery http://www.phpwebgallery.net/ first.

January 19th, 2007 Posted by callum | QRO | no comments