[Elecraft] 40-80m choices antenna for KX3

Karl W Hubbard karlwhubbard at yahoo.com
Wed Nov 2 20:38:25 EDT 2022


I have been inactive for three years with  KX3,  KPA100and  PX3. Retired now. Living at myoffice until it gets sold. Trying to get back into things, especially 40 and 80meters SSB and cheating on CW using  PX3 typeencoding/decoding if possible.  

Question: How to rig and which antennas for my KX3 (has ATU) given the following  layout andlimitations:

Far left end of parking lot has 25 foot tree. From therealong the back end 90 feet to the right back end (the corner), there is a 50 fttree. From there, at right angle, it is 70 feet to my office with the roofabout the usual 10 feet where the coax feed line could enter into my office. Innorth east  NC 40 miles from Outer Bankscoast, essentially at sea level.

Plan on using 50 ohm USA Flex low-loss coax. Would ahorizontal “L” be functional, with the highest point at the right corner treeat the right angle of the “L” and the coax dropping vertically and then runningto my office?

Here’s what’s in my collection. (I’m not buying any morestuff until I relocate)

Parz 20/40 End Fed (would not capture 80m) nor would my AlexLoop. 

Buckmaster 7 band OCF  75-80m to 6 m, 300 W

EmComm III  80-6 m100W

Buddipole Vertical. I have the TRSB, extension arms, longwhips, shock cord 18ft mast  etc but reallydon’t want to rig it in the center of the parking lot as occasionally cars cutthrough. (I’m on a corner lot.)

So any ideas? Start from scratch and get some 12 gaugebraided wire,  a balun  or un-un etc? I still have some old 20 and 40meter dipoles with the insulated  12 gaugewires I experimented with years ago. 

Although I’d like to just run an end fed from the taller treein the right corner to the building, I really don’t think I have enoughdistance from that tree to the office for 80m, I think. 

Any suggestions? Thanks in advance for any suggestions.

73’s,

Karl “Hubbs” AF5LQ



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