Digital or Analogue aerial

R

RadoXX

New Member
My Satellite Setup
N/A as require people advice
My Location
Bedfordshire
Hello everybody! Could anybody tell how to find out if i have digital, or analogue aerial on my roof? I also would like to know how to find out aerial supports HD.Please help

Many thanks!
 
Welcome to the forum. There's no such thing as a digital or analogue aerial, except maybe in product marketing departments... Aerials don't care if the signal received is analogue or digital. The important thing is that the aerial is correct for your transmitter. During digital switchover in some areas the transmitters changed frequencies which required a wide band aerial to pick up frequencies outside the original group. Do you know what transmitter you are looking at?

HD transmissions may be weaker than the SD equivalents or may not be covered in your area. Without knowing where you are in Bedfordshire it's hard to give much more advice.
 
As timo says, there is really no such thing as a digital aerial. Best thing to do is try your kit with the existing aerial, if it works, great, if you have break up or can't receive all channels, then get the aerial or amplifier looked at.
 
Take a good quality picture of what is on the roof, digital (DVBT) television started some 15 years ago and so if you have had an aerial since then there is a good chance it will be wideband, though this is not guaranteed.

(From memory a wideband group aerial would have black plastic caps at each end of the boom).
 
This is a digital aerial:

Television-aerial-mounted-on-chimney-stacks-on-a-roof-top.png


And this is an Analogue aerial:

Television-aerial-mounted-on-chimney-stacks-on-a-roof-top.png


:D
 
Well the old analog TV signals had a 6.2 MHz wide transmit channel***, (NTSC Spec's) so the old analog aerials had about a 7 MHz wide receive bandwidth on the receive elements**, the new digital TV channels have a 10 MHz wide bandwidth (at least here in the US they do) so the new antennas have about a 10 MHz wide receive bandwidth on the receive elements, all this does is make the receive elements a bit bigger around on the new antennas then the old antennas, both type antennas will work, one a tad bit better.

**Receive elements, the things sticking out horizontally from the antenna

***4.5 MHz video carrier, 6.2 MHz audio carrier
 
Hello everybody! can anybody explain to me what is meaning of 48 element, 64 element,32 element, what does it do and what is the best aerial to buy?

Many thanks!
 
RadoXX said:
Hello everybody! can anybody explain to me what is meaning of 48 element, 64 element,32 element, what does it do and what is the best aerial to buy?

Many thanks!
Click to expand...
It refers to the amount of "prongs" on the aerial. The more elements you have the better the gain, so more signal is received. Generally, the further you are from the transmitter the more elements you need.
 
RadoXX said:
Hello everybody! can anybody explain to me what is meaning of 48 element, 64 element,32 element, what does it do and what is the best aerial to buy?

Many thanks!
Click to expand...
Again, as Timo says, the more elements the more gain, an aerial installer will generally know his local area and pick an aerial to suit local reception conditions. You also have to take into account 4G signals in the area, which if strong, may necessitate using an aerial which rejects most of the 800mhz range and or a masthead LTE filter. I use the Vision 36 element superlog for many of my installations, it has a tuning stub which eradicates a proportion of the 4G signal. http://www.vision-products.co.uk/catalogue/product/V10-36L . For parts of the area with strong signal I use a mini log, they're very compact with limited gain, but in a good signal area can still provide enough signal to drive a multipoint passive system and offer very little wind resistance, so a light chimney rig can be used. http://www.triax.com/FindProduct/ProductDetails.aspx?product={EF3FC918-7F6D-4F2D-AEE4-FD5D04819844}
 
rolfw said:
I use the Vision 36 element superlog for many of my installations, it has a tuning stub which eradicates a proportion of the 4G signal. V10-36L 36 Element Stub Tuner Super Log Periodic Aerial » Vision Products - Powerful Products. Easy Installation. Excellent Value .
Click to expand...

A small red plastic thing that can ping off as soon as you take it out of the box.

Mine did.

:-rofl2


I think the only way to keep it on would be to mummify it in self amalgamating tape with some of the tape going round the boom.
 
hexah said:
A small red plastic thing that can ping off as soon as you take it out of the box.

Mine did.

:-rofl2


I think the only way to keep it on would be to mummify it in self amalgamating tape with some of the tape going round the boom.
Click to expand...
Not had a problem with any I've installed.
 
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