Bad TV reception - signal too strong?

john_kent

May be umberella effect,

$nake_eye$

Thanks everyone, ill give it a shot!

epninety

stevemcol wrote: »

and if you're intested, 6db halves the signal strength

Actually, 6dB halves the *voltage*, 3dB halves the power.

If you really think the signal is too strong, buy the 12dB attenuator, or (the MSE method) try swinging your aerial around 180 degrees. The usual type TV antenna has a big blind spot at the back, so the signal will get weaker as you turn away from the boresight (pointing straight at the transmitter).

trevor_john

epninety wrote: »

Actually, 6dB halves the *voltage*, 3dB halves the power.

The usual type TV antenna has a big blind spot at the back, so the signal will get weaker as you turn away from the boresight (pointing straight at the transmitter).

And then you will get ghosting too !! lol

banger9365

my sister lives next to a slag heap and lives in a strong signal area ,she has ghosting like hell on normall tv ,she has the miirror signal off the slag heap and normal one put if she us a freeview box it's fine so it mite be wise to try a freeview box(dvb-t box)and you get more chanels too,

epninety

trevor_john wrote: »

And then you will get ghosting too !! lol

No, only if you point the antenna at something thats doing a good job of reflecting the signal.

trevor_john

Ok as an aerial installer for 20 years and own business,guess i am wrong.
*gets coat*

Moneymaker

Instead of guessing, why not look up the signal strength at your location? Type in your postcode here:

Digital http://www.wolfbane.com/cgi-bin/tvd.exe?DX
Analogue http://www.wolfbane.com/cgi-bin/tva.exe?DX

Analogue signal plus aerial gain must be less than 80dBuV.
Digital signal plus aerial gain must be at least 53dBuV for reliable reception.

Typical aerial gain = 12dBd.

epninety

trevor_john wrote: »

Ok as an aerial installer for 20 years and own business,guess i am wrong.
*gets coat*

Not saying you're wrong, just thats it's not guaranteed - it depends on the site. Certainly worth a try *if* the aerial is easily accessible, before buying anything.
If this wasn't the MSE site, both you and I might well just say 'call an aerial installer'

(BTW - radio designer for 20 years and also own business )

*gets goat*

trevor_john

epninety wrote: »

*gets goat*

Yes it does doesn't it lololol !!!!