At 06:06 AM 9/1/2009, nachif@terra.com.br wrote:

BODY { font-family:Arial, Helvetica, sans-serif;font-size:12px; } Has anyone used 1.2 GHz loop yagis on AO-51 or any other satellites before? Was it worth? Would you recommend? Any comment? 73, Luciano PT9KK _______________________________________________ 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

I have the 45 element loop-yagi from Directive Systems that I worked AO-40 with 9.5w (at the antenna). It has 20-dBi of gain and is 12-foot long. For satellite use you want the 1268 model not the 1296 model. I tried stacking one of each and had bad SWR as a result. I removed the 1268 model last weekend to install on my short tower for satellite (with B5400 az-el rotor). I have a 15w 1268/144 Tx convertor which will be mounted on the elevation crossboom with a short run of 1/2-inch hardline. The 1296 model will remain on my 50-foot tower mounted inside my four 2m-eme yagis for tropo operation with 60w in the shack. I also have a loop-yagi for 927.5 MHz use.

For AO-40, my experience indicated that 15-25w would have worked better, but then AO-40 ranged out to 65,000 km range. For Leos, one of these loop-yagi should suffice with 10w. KL7XJ has a Helix that he uses with 10w in the shack on AO-51.

73, Ed - KL7UW http://www.kl7uw.com/sat.htm