Chris, Best advice I can give is don't. Phasing and Phase centers are critical. Most likely you will have pulling of the patern right /left or up/down. Gain of this type of antenna is best obtained in a single dish or a panel type antenna where phasing can be tightly controlled. Look for a 6' TVRO dish.

Art, KC6UQH ----- Original Message ----- From: "Chris Huber" cahuber@ucdavis.edu To: amsat-bb@amsat.org Sent: Wednesday, August 08, 2007 4:56 PM Subject: [amsat-bb] 2 ghz antenna question

Hello,

I know this is off subject, I am looking for ideas on stacking 2 antennas. I am doing a 25 mile WiFi link on 2 GHz using 1 3 foot grid dish with horizontal polarity. I have a power divider and a second dish that I want to mount directly above the first antenna.

Is the vertical spacing critical? Is there any advantage over close spacing, ie. increase gain or wide spacing to give better path fade protection.

Thanks for your time.

Chris N6ICW _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

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