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W7SX is ex-WN9RAT, WA9RAT, WA9RAT/HR2, and SV1/W7SX. Licensed since 1966, DXCC Honor Roll accomplished with only tree-supported wire antennas, CW DXCC Honor Roll, 2x5BDXCC (>200 on each band) + 160, 30, 17 and 12 meter DXCC, 5BWAZ (200) ARRL Life Member, ARRL Technical Advisor. e-mail: w7sx@arrl.net


My new book, "Antenna Physics, An Introduction" has been published by the ARRL. They are now taking orders at


We are in the process of selling our QTH, taking down the station, packing it up and putting it into storage. We plan to buy a new place in 6-12 months so we'll be QRT for some time, then hopefully back on with an improved set-up! IN the meantime, I'll leave the photos on the site.


I answer all QSLs via the bureau or direct. Please include SASE for direct, otherwise the return will go via the bureau. I still keep a paper log, but I answer all LOTW QSL requests. Simply send the request via e-mail and I will enter the QSO on LOTW if you are in the log. I do not participate in e-QSL.

My 6 meter beacon (W7SX/b) has been on 50.071 MHz. We are in the process of moving. I hope to find a temporary home for the beacon until we get resettled. I will be QRT for 6-12 months (estimate) until we settle down again.


This photo shows the complete operating position including two 6 foot racks containing two GS35b Russian triode 1.5kw homebrew amplifiers, one for 160-10 meters, the other a monoband 6 meter amp, wire antenna and tuner selectors, selector switches, and 8 high power tuners for instant QSY. The entire station is homebrew except for the K-3, four Johnson Matchboxes, and a rebuilt TH6DXX. Photo 2012, under renovation currently.

This photo shows the nearly-completed rebuild of the 160-10 meter GS35b amplifier (October 2015).

This photo shows the 6 meter GS35b (horizontal mount) amplifier under construction (2012).

This is a bottom view of the 160-10 meter amplifier nearly completed Oct 2015.

The homebrew 33 foot steel self-supporting tilt-over tower (design and welding by W7SX) with redesigned TH6DXX and a M2 6 meter Yagi. The tilt-over feature negates the climbing of the tower and makes for easy antenna adjustments on the ground. An automotive wench serves for raising and lowering the tower. 

This is the lowered position of the tilt-over tower. The permanent steel gin pole protrudes upward from the base. The tower base is fixed in 2 yards of concrete.

This is the backstay and automotive winch that raises and lowers the tower. It is bolted to a steel mount that is welded to rebar, which in turn is anchored in 1 yard of concrete.The car battery is charged by a burried cable that leads to the garage and a 3-stage charger continuously on. The battery also provides power to several external remote control and security devices. When not in use, a cover is placed over this assembly. The tower design could easily be extended to 45 feet or more.

In addition to the tower, I have a wire antenna farm for the low bands between 60 and 100 feet high supported by Douglas fir trees. This includes the Bob-Zepp for 160-80-40 meters described in the Nov-Dec 2014 and Jan-Feb 2015 QEX issues.



7251002 Last modified: 2016-04-18 20:03:51, 5086 bytes

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