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Re: OnDigital Signal Breakup...





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Seem to recall 6 or 8 buttons and i am sure i have seen more. I wanst going as far back as dual standard.
 
Even my decca portable has 8. this was one of the first color portable approx 17 years old. All tranny and remote control.
 
Steve.
----- Original Message -----
Sent: Sunday, September 23, 2001 12:38 PM
Subject: RE: [ukha_d] OnDigital Signal Breakup...

The early UHF only sets had buttons for
 
BBC1, BBC2, ITA1, ITA2.
 
Some early colour sets were Dual Standard VHF/UHF 405/625 line and some of the buttons were for VHF.
Some sets also had 2 rotary controls. A switch for VHF channels 2-13 with one position marked UHF, and a rotary pot with gearing to fine tune anywhere between 21-68.
 
Keith
-----Original Message-----
From: steve [mailto:steve@xxxxxxx]
Sent: 23 September 2001 10:13
To: ukha_d@xxxxxxxSubject: Re: [ukha_d] OnDigital Signal Breakup...

Only 4 - some early TV's had many more station buttons.  It obviously never would have worked very well.
 
A reason to switch off the analogue transmitters sooner ? Perhaps it will last as long as metrification!
 
Steve.
----- Original Message -----
Sent: Sunday, September 23, 2001 9:35 AM
Subject: RE: [ukha_d] OnDigital Signal Breakup...

Many people had the same problem with CH5.

35 & 37 were assigned to channel 5 for large parts of the country and many
people needed a wideband aerial to get CH5.

The basic problems are...
1. The channels spacing were only ever designed to accomodate 4 channels.
2. The UK is physically too small to have the number of transmitters it
does.

Most of the time the signals will keep within the defined boundaries of the
transmitter footprint, but in the summer, atmospheric conditions make the
signals travel much further into other areas using the same frequencies. Now
the 7 extra channels are needed everywhere (CH5 + 6 Muxes) anything being
received on those frequencies will mess up reception.

Because of the above problems with skip, Channel 5 is often at a much lower
power than Ch 1-4. Digital can work with much lower levels but if it happens
to get swamped by a strong analogue signal you lose digital.

Keith

> -----Original Message-----
> From: Phil Harris [mailto:phillip.harris1@xxxxxxx]
> Sent: 22 September 2001 23:01
> To: ukha_d@xxxxxxx> Subject: RE: [ukha_d] OnDigital Signal Breakup...
>
>
> I have no objection to then being in with the analogue channels ... what
> bums me off is that out here almost everyone needs a new wideband aerial
> when they switch to digital as the ITV MUX is completely the
> opposite end of
> the band from all the others and hence fallsoutside the reception of a
> narrow band aerial...
>
> Phil
>



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