G8AWB thanks for that information it’s inspired me to go ahead and try building one.
Question still open: are people still interested in such an article? Lots of DIY involved. nothing from shops except screws and N-connector.
Return loss measured and exceeding 25dB (which is VSWR<1.12).
@DH2VA Likewise, I would be interested in reading an article.
G8AWB thanks for the information posted it’s much appreciated, does the square aluminium boom impede the antenna in anyway because some designs I’ve seen don’t use that method?
Also, does your antenna Impedance transformer look like these by G3RUH?
Another interesting design:
@DH2VA Another helix feed. Design by DJ4ZC, CAD and construction by DH2VA and final alignment by DL5MLO. If enough people believe, that the construction is compatible with hamradio, we could do another journal article..
DD0KP thanks for that, not seen helixcalc before however I have been looking at these online helix calculators.
G8AWB I would be interested also in seeing your build photos and design information, I have been looking at many helix websites / YouTube videos (http://ve2zaz.net/13cmHelx/13cmHelx.htm & https://www.qsl.net/oh4jzj/13cmhelixframe.htm) and the bit that’s not clear to me is this Impedance transformer which is putting me off from building one, so any clear information / photos would be much appreciated.
DD0KP and HB9SKA thank you for responding to my query.
DD0KP really looking for a helix with RHCP so no losses are incurred, not sure how easy it would be to reverse LHCP to RHCP never done it before, and I’ll have a look on Google see what that turns up.
HB9SKA everything I am looking for and it looks the part but it comes at a premium price, I suppose quality cost money. I’ll just keep looking.
Hi All, other than WIMO, does anybody know a good source of quality 2.4 GHz Helix antennas with 16 or more turns for those who can’t put up a dish antenna?
