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F6ARC - FG/F6ARC - FM/F6ARC, please QSLs via bureau, LoTW, eQSL or direct with a SAE and 1 US dollar (EU), 2 US dollars (Outside EU) or one valid IRC, to: FE11DX, STEPHANE LAIGNEAU 1 RESIDENCE FRANCOIS FOREAU 28110 LUCE - FRANCE

"God gave us two ears and one mouth, so we ought to listen twice as much as we speak"  ~Irish Proverb~

Five Band HF Beam covering from 20 to 10 meters

Moxon Rectangle on 20m, Reflector-Radiator Yagi on 17m, 15m and 12m, Radiator-Director Yagi on 10m.

The forward gain of a Moxon Rectangle is almost the same as a full-size two-element Yagi. So why choose the Moxon version rather than its "big sister"? Because this design offers certain advantages:

  • smaller footprint (28% less width than the Yagi),
  • minimal movement in high winds (well-balanced antenna),
  • direct 50-ohm connection (no matching system required),
  • wide bandwidth (max 1.3:1 SWR at band edges),
  • wide beamwidth (no need to be pointed in precisely the right direction),
  • outstanding F/B ratio (20-25 dB; particularly useful on the crowded 20m band).

I have been using this antenna since May 2013. Bear in mind that only two elements are active on each band, therefore it can't compete with multi-element monobanders. Although tests were carried out without another antenna as reference, I have made enough tests to rate its performance. I live out in the country, but soil quality is rather poor (sandy). The antenna is less than 14 meters (45.9 ft) above the ground. However, the least I can say is that the results are well beyond my expectations.

Sept 4, 2015: two elements (reflector-driver combination) operating on 18 MHz have been added to the original model (DXBeam, DXB20151210-8mx).

In conclusion, I would say that this multiband beam is a good compromise for those who have antenna restrictions. The only potential issue (and only for those lacking sufficient mechanical knowledge) is the bending of the corner sections. Perhaps that's the price to pay for getting optimal performance from such a small antenna.

"If the Moxon Rectangle didn't exist, you'd have to invent it."

View looking West/Southwest

My tower sits on the highpoint of the property from which the ground slopes down in all directions (for at least 200 meters straight out from the tower base) except those between Northeast and Southeast. The picture above shows a profile of the terrain when beaming LP to Australia. Despite its low height, my two element Moxon seems to perform surprisingly well on 20m. Ian, VK3MO, carried out an analysis of my long path takeoff from what I believed was a “less than perfect” HF ground (see chart below – HFTA software) .


Here's what Ian wrote to me: “The plot shows just how beneficial your ground slope is in enhancing your long path signal.  I have done 3 plots for comparison. Firstly the plot for your ground slope, secondly the plot if your antenna was over flat ground and the same height and finally your antenna at a height of 150 feet over flat ground.  The result shows your ground slope provides a better result than a 150 ft high tower”.


A higher antenna does not necessarily mean better results!

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QRZ Logbook Summary for - F6ARC
Latest Contacts for F6ARC at QRZ.com
dedateband mode grid Country op
ZL2TED 2014-01-30 20m SSB RE78kp New Zealand Ted Colgan
PP2TW 2014-01-28 15m SSB GH53ie Brazil Divinaldo silva oliveira
VK2FMWA 2014-01-28 15m SSB PG66pa Australia Mark Abela
VK4GCQ 2014-01-27 20m SSB QG61rv Australia JW KENNY
AA3B 2014-01-25 20m CW FN20ei United States JOSEPH W TRENCH
VK2HDX 2014-01-17 20m SSB QF56ob Australia Paul G Duffy
JA3LIL 2014-01-16 20m SSB PM74iu Japan Kazuo Nakano (Handle: KAZU )
HL2KXT 2014-01-16 20m SSB PM37no South Korea Jang, heung-suk (SU)
JO3WHB 2014-01-12 15m SSB PM74qt Japan MATSUHIRO OHNO
BV6FG 2014-01-11 15m SSB PL04nf Taiwan DANIES WANG
JF1KSP 2014-01-11 15m SSB PM95rq Japan SHOJI KAZUMORI
FO4BM 2014-01-09 20M SSB BH52cm French Polynesia Philippe GLOAGUEN
JH7IQQ 2014-01-09 20m SSB QM08jh Japan Makoto Ito
VK2HDX 2014-01-09 20m SSB QF56ob Australia Paul G Duffy
K7IN 2014-01-04 15m CW DM09bm United States PAUL W CAVNAR

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