Telly Aerials

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G8YMW
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Telly Aerials

Post by G8YMW » 04 Dec 2011, 18:26

Heres a site that will give you shed loads of info on TV aerials including reccomendations for individual TV transmitters.

http://www.aerialsandtv.com/index.html

sec1223
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Re: Telly Aerials

Post by sec1223 » 04 Dec 2011, 18:33

you'd be sup prised how well a telly ariel works on 70cms !
cant stand IGNORANT b******ds

normal
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Re: Telly Aerials

Post by normal » 04 Dec 2011, 19:53

UK UHF| TV is 470-850MHZ

Some UHF TV antennas are made to work best in different parts of that range.

An TV antenna for group A (470-602MHz) is likely to work significantly batter at 70cms than an antenna for group C/D (690-850MHz).

A group A TV antenna is likely to have 5-8dB less gain at 70cm's than it does at the center of it's intended frequency range.

plots of gain versus freqency in the TV band for different antennas at the bottom of this page, you can make a guess what it will be slight at 70cms sightly off the left off the graph.

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Adriano9966
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Re: Telly Aerials

Post by Adriano9966 » 04 Dec 2011, 20:48

:lol: pmr stealth yagi????

mick2e1hzm
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Re: Telly Aerials

Post by mick2e1hzm » 14 Dec 2011, 21:15

Try it on your scanners it works a treat have two one horizotal and one vertical both in loft and get manchester fine thats not bad for nothing :lol:

friendly1uk
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Re: Telly Aerials

Post by friendly1uk » 15 Dec 2011, 14:19

Reckon PMR performance might be better if you lengthened the elements a smidge. Idealy moving them appart a little too, But then it would be an actual 446 antenna.

You do get quite a bit of twig for your money. The boom, the refflector, the connection box and all the little plastic isolators. B&Q sell ally strip by the meter. Get it all on the bench with your calculator and it should get results. Dunno what kind, But results.

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B52
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Re: Telly Aerials

Post by B52 » 21 Dec 2011, 23:47

friendly1uk wrote:Reckon PMR performance might be better if you lengthened the elements a smidge. Idealy moving them appart a little too, But then it would be an actual 446 antenna.

You do get quite a bit of twig for your money. The boom, the refflector, the connection box and all the little plastic isolators. B&Q sell ally strip by the meter. Get it all on the bench with your calculator and it should get results. Dunno what kind, But results.
You get a lot for your money because they are mass produced, unlike 70cm dedicated antenna's that sell in small quantities.

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