SOTA and WWFF Antenna

 SOTA Antenna

 

2M 

26.5m 80/40/20/10 EFRW

Went with 49:1 on a FT82-43 toriod with 3:24 ratio and a 120pf 500v mica cap (that was what I had) with 26.5M of wire.

Intentionally selected a length with no half waves. 26.5 m = 87  feet. (https://udel.edu/~mm/ham/randomWire/

 

http://www.qrpkits.com/sota.html with 19.5 m wire and counterpoise

 

Trap 20/40 Dipole based on SOTABeams pico traps – https://www.sotabeams.co.uk/pico-traps-kit-pair/

Trapped end feed also based on pico traps.

 

 

Loaded end fed – https://www.nonstopsystems.com/radio/frank_radio_antenna_multiband_end-fed.htm

20/30/40m Vertical

QRPGuys Portable Tri-Band Vertical Antenna – https://qrpguys.com/qrpguys-tri-band-portable-vertical-antenna

Looking for a DX antenna for S2S evenings. A 20m vertical appears to be the answer.

Considered  

DSCN9347

This will rock for 20 and 30 but doubt 40 will be much chop.

Got the switches 2m off the ground.
Had to keep the forth radial as it reduced swr, actually it flattened it. So three radials one down each guy and the forth just hanging down. Actually except you need the squid pole its quite a compact sturdy antenna.

Spreed the anti with clear acrylic

QRPGuysVertical

 

Tuned each segment with the VK5JST tuner. Also ordered the W8TEE and K2ZIA Antenna Analyzer – https://qrpguys.com/w8tee-k2zia-antenna-analyzer

 

Notes:

VDA – http://www.ph0no.net/2017/11/looking-at-vda-as-portable-antenna.html

http://www.66pacific.com/calculators/coil-shortened-vertical-antenna-calculator.aspx 

http://www.66pacific.com/calculators/coil-inductance-calculator.aspx 

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