G4CQM's Amateur (Ham) Radio VHF/UHF Yagi Antenna Designs

12th Sept 2016... You've arrived at the index page to my websites... Many thanks to all of you who decided to build and use my 50-Ohm direct feed yagi antenna designs! My radio station website is here at www.g4cqm.uk

Six years of research has revealed that yagi designs with a very low average Q-factor deliver the best overall performance, and stability in all weather. To achieve this I use a range of Software to ensure accuracy, including K6STI's unique AO Professional. As a result many of my designs have the cleanest patterns as seen in TANT. There is no need for a conventional Balun either, making Driven Element construction very easy indeed!

Considering building a Dual Band 6/4M (50/70MHz) single feed yagi design? Then my in depth article spills the beans!

In 2013 I handed over to Richard Mason G6HKS and also Roger Banks GW4WND of the DXShop ownership and production of PowAbeam Antennas. Please remember it's Richard for kits & parts and Roger for ready made yagis!

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At last, with help from friend Mark the CQM10DX looks over Devon. Average Q-factor at around just 13!...
At last, with help from friend Mark the CQM10DX looks over Devon. Average Q-factor at around just 13!
M9T in action (RSGB 144MHz Trophy) using 4 x WA25055 and 2 x WA9UX0, thanks to Richard G4WFR...
M9T in action (RSGB 144MHz Trophy) using 4 x WA25055 and 2 x WA9UX0, thanks to Richard G4WFR
4 x PA0712L (50MHz) AOWA's with full Alt/Az control built by Roger Banks GW4WND of The DXShop...
4 x PA0712L (50MHz) AOWA's with full Alt/Az control built by Roger Banks GW4WND of The DXShop
Well known DXer Lyn (GW8JLY) has a new beam (WAXX8S) supplied by Roger of The DXShop...Excellent homebrew crossed polar 4323WL50 yagis built by Bill VK3LHB...
Well known DXer Lyn (GW8JLY) has a new beam (WAXX8S) supplied by Roger of The DXShopExcellent homebrew crossed polar 4323WL50 yagis built by Bill VK3LHB
144NX14 built by Roger ZL3RC, excellent homebrew element mounts!...144NX14 sealed DE built by Roger ZL3RC...
144NX14 built by Roger ZL3RC, excellent homebrew element mounts!144NX14 sealed DE built by Roger ZL3RC
Mick G1EZF now using WAXXX10S supplied by Richard G6HKS...PA0608H 6 ele AOWA 4M (70MHz) yagi used by Bob M1MHZ during UKAC, top yagi! Built by Richard G6HKS...
Mick G1EZF now using WAXXX10S supplied by Richard G6HKSPA0608H 6 ele AOWA 4M (70MHz) yagi used by Bob M1MHZ during UKAC, top yagi! Built by Richard G6HKS
Incredible build of SCQM60UC 1296MHz FLOWA, homebrew by Roger ZL3RC. Outperforms loop yagis!...
Incredible build of SCQM60UC 1296MHz FLOWA, homebrew by Roger ZL3RC. Outperforms loop yagis!
Excellent homebrew 2 x CQM6UX FLOWA's built by Colin VK4MIL...The 6CQM6UX 50MHz FLOWA seen at G3TKN, built by Roger Banks GW4WND of The DXShop...
Excellent homebrew 2 x CQM6UX FLOWA's built by Colin VK4MIL...The 6CQM6UX 50MHz FLOWA seen at G3TKN, built by Roger Banks GW4WND of The DXShop...
Available ready made from Roger Banks GW4WND of The DXShop these professional 1296MHz SCQM24UC FLOWA's...Roger Banks GW4WND of The DXShop builds 50MHz 6M7N50LY and continues to work some good DX - Oct 3rd... Just completed with ZL2DX on 6m EME at 1 deg MR this end...
Available ready made from Roger Banks GW4WND of The DXShop these 1296MHz professional SCQM24UC FLOWA's!Roger Banks GW4WND of The DXShop builds 50MHz 6M7N50LY and continues to work some good DX - Oct 3rd... Just completed with ZL2DX on 6m EME at 1 deg MR this end!
Peter G3MLO has just completed building this stunning 4 x WAXXX10S AOWA yagi array. First reports of hearing the Angus beacon confirm superior performance under flat band conditions...Excellent build by Daryl VK4ADM with his own implementation of the now popular CQM12UX FLOWA. His booming signal reported several hundred kilometers distant...
Peter G3MLO has just completed building this stunning 4 x WAXXX10S AOWA yagi array. First reports of hearing the Angus beacon confirm superior performance under flat band conditions!Excellent build by Daryl VK4ADM with his own implementation of the now popular CQM12UX FLOWA. His booming signal reported several hundred kilometers distant!
An important lesson from VK4MJF: When using Stauff type clamps on 144MHz use additional spacing, raising elements sufficiently high above the boom to avoid the need for correction. Thus ensuring that your yagi is tuned correctly...An important lesson from VK4MJF: When using Stauff type clamps on 432MHz use additional spacing, raising elements sufficiently high above the boom to avoid the need for correction. Thus ensuring that your yagi is tuned correctly...
An important lesson from VK4MJF: When using Stauff type clamps on 144MHz use additional spacing, raising elements sufficiently high above the boom to avoid the need for correction. Thus ensuring that your yagi is tuned correctly!An important lesson from VK4MJF: When using Stauff type clamps on 432MHz use additional spacing, raising elements sufficiently high above the boom to avoid the need for correction. Thus ensuring that your yagi is tuned correctly!
VK4MJF builds CQM12UX FLOWA (special version) on test before final installation...Excellent build by VK4MJF, 2 x CQM12UX FLOWA (special version) and 2 x CQM24UC FLOWA (special version), congratulations on a proper job...
VK4MJF builds CQM12UX FLOWA (special version) on test before final installation!Excellent build by VK4MJF, 2 x CQM12UX FLOWA (special version) and 2 x CQM24UC FLOWA (special version), congratulations on a proper job!

Amateur (Ham) Radio VHF/UHF Yagi Antenna Designs by G4CQM © 2015 Derek Hilleard G4CQM
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