Yagi advice

Author Post

Nicky, 2E0BPU

Wed Feb 17 2010, 08:14AM
Hi guys,I'm thinking about building a 3/4 element yagi for 6 metre, and have been looking at G0KSC's web site and also DK7ZB's site ,both very interesting, I see G0KSC has 50 ohm feed that will make life easy, so why should I make a 12.5 ohm or a 28 ohm feed yagi?Size maters, the house next door is a bit to close
All the best Nicky 2E0BPU
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Trev, EA5ISZ
Wed Feb 17 2010, 09:25AM
Trev, EA5ISZ

Registered Member #13
Joined: Tue Mar 18 2008, 01:43PM

Posts: 143
Hi Nicky,
If size as in length of boom/elements is really a significant factor then you might consider a quad. A much shorter boom length and around half the turning circle of an equivalent yagi. They also work well when in fairly close proximity to other objects that may affect the operation of a yagi; typically an ideal loft antenna. Gain of a 2 ele quad about equivalent to a 3 ele yagi. Construction is simple and there are plenty of constructional articles about. gl, Trev
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Nicky, 2E0BPU
Wed Feb 17 2010, 07:22PM
Nicky, 2E0BPU
Registered Member #1114
Joined: Mon Dec 07 2009, 06:10PM

Posts: 12
Hi Trev, thanks for the fast reply,I have been thinking about quads for some time,our house is very close to next door,so size is an issue,we are about 2 metres from the boundary more or less,so maybe a moxon will be a better idea,but I don't wont one made from wire,I'm only going on the roof 1 time,so if it brakes that's it.

Here is a link to a quad project on you tube,it,s for 10 metres my favorite band,but can be re worked .



A friend in Russia has a BIG quad,here is another link



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Trev, EA5ISZ
Wed Feb 17 2010, 08:49PM
Trev, EA5ISZ

Registered Member #13
Joined: Tue Mar 18 2008, 01:43PM

Posts: 143
no problem Nicky, there is a quad design here on the site, you don't need to stick to the construction technique but its useful for sizes:
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Steve, G4WCS
Thu Mar 25 2010, 11:19AM
Steve, G4WCS
Registered Member #283
Joined: Fri Apr 18 2008, 11:55AM

Posts: 70
have alook here



I went down the DK7 route- its a nice compact antenna- the coaxial matching transformer is straightforward.
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