[amsat-bb] Anyone built K5OE Eggbeater II antennas ?

["Ronald Nutter" <rnutter@xxxxxxxxxxxxxx>]

I have been trying for several days to build the eggbeater II antennas at described on K5OE's web site.  This has very quickly become an exercise in frustration.  Bought a MFJ219B analyzer so I could do the UHF measurements.

Going from his measurements, I started out with a piece of wire 30 inches in length, couldnt get the swr to come down any until around 460 mhz and even then, it was well over 3 to 1 using the phasing harness described.  I am now using a piece of wire 40 inches in length, bent to form a square/rectangle and the swr now just starts to drop around 450 mhz.  

I am using zinc plated hardware instead of the stainless steel.  Didnt think it would make much of a difference and I already had it on hand.  I am using crimped on ring lugs to attach the #10 wire to the screws that are going through the PVC.  The screws/bolts are inserted inside the PVC and point out through the outside of the PVC.

I am doing the swr measurements with the MFJ inside the radio room.  Didnt think it would make much of a difference - inside vs outside.

Any suggestions ?  Didnt think making a uhf antenna would be this hard.  Cant really afford to buy commercial antennas at this point.

Thanks,

Ron 
Ka4kyi


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