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 vhf uhf beam 
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Post vhf uhf beam
Hi is anyone using one of the beams off ebay the dual band 2 and 70cm one looking at the designs for one but was wondering if there worth making or buying ???
or has anyone got one they want to sell ??


Sun Jan 20, 2019 6:19 pm
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 vhf uhf beam 
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Post Re: vhf uhf beam
They work very well.
I have built several, my own dimension calculations, but you have to be able to work to very precise measurements.
You can't just add or subtract elements, everything changes when you do.
If the SWR is way out, you can't just adjust one element to bring it down (it will bring it down, but gain, FB and pattern goes to pot)

I have no idea of the quality of the ones on ebay.

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Sun Jan 20, 2019 10:55 pm
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 vhf uhf beam 
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Post Re: vhf uhf beam
https://dk7zb.darc.de/Duoband/5+8_2m-70cm.htm


:hello:

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Mon Jan 21, 2019 4:56 am
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 vhf uhf beam 
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They work well, but you have to use the exact size aluminium to get full stated performance, and exact measurements to within 1/2 mm.

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Mon Jan 21, 2019 5:41 am
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 vhf uhf beam 
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Post Re: vhf uhf beam
Have a look at these ...very well made....I've got Goran beams for 23cms and 4m

It is about a 3 week wait from ordering as he builds most antennas to order

https://www.antennas-amplifiers.com/dua ... cm-antenna

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Mon Jan 21, 2019 11:18 am
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 vhf uhf beam 
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Post Re: vhf uhf beam
Sangoma wrote:



They work well, but you have to use the exact size aluminium to get full stated performance, and exact measurements to within 1/2 mm.


Looks Interesting might have ago of by one off the guy on eBay


Tue Mar 12, 2019 6:54 pm
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