My Antennas

.I have a modest assortment of antennas. As we have all heard , "you can't work 'em if you can't hear 'em" I have a 75 foot Rohn 25G tower with a Cushcraft A4S tri-bander. On a 35 foot push-up mast I have a 4 ele 6 meter yagi and dual band vertical for 2/440


I have a 80-10 meter Off center Fed Dipole. It covers all bands with a tuner and surprisingly works on 75, 40, 30 , 12 and 10 meters without a tuner. It is below 1.5 to 1 in the 75 meter DX window, it covers all of 40 meters below 1.5. to 1, 30 meters is just under 2 to 1. 12 meters is perfectly flat, and it is great on 10m. As of late with my SO2R efforts, I have been experimenting with different antennas. I have found when I am on 15 meters with the primary station, I can use the secondary station on 10m with the OCF and have excellent results. 


I have a full-wave forty meter loop on 40 meters, this is a most effective antenna and also works less than 1.5 to 1 SWR on the 15 meter band. This is my secondary antenna on 15 meters when I am running SO2R


Installing the DX-B Sloper

I recently installed a Alpha Delta DX-B Quarter Wave Sloper on the side of the tower. It is located between the top set of guy wires and the tri-bander. So far it works as specified. Resonate in the Dx window on 160, 80, and all of 30m. it is a little high in the band on 40, but since I have the full wave loop and the OCF, I won't sweat that for now. It works better than the Inverted L on 160 that it replaced.

© 2011 K4FX

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