In message , hwh
writes:
On 2/5/12 7:04 PM, J. P. Gilliver (John) wrote:
But you've got to remember that this is the country that kept 405-line
going for, I think, longer after 625 started than it had been going
before that.

Erm, 405 started before the war and was alone until 1964? Then it
continued for another 20 years?

gr, hwh

OK, so I was wrong about the second period being longer than the first
(though the number of receivers near the beginning of the first period
was tiny). Don't include the war itself - it was turned off during that.
(No TV!)

No, I've looked it up: UK 1936-1985 (fully from 1937, but not during the
war: 1939-9-1, back after in fact, in 1946); Eire 1961-1982 (they had
625-line from 1962). [Hong Kong 405: 1957-1973. Other countries,
experimental only, in 1939.] All from
http://en.wikipedia.org/wiki/405_line.

I was mainly responding to the person who said that in theory USA could
still have analogue TV until (I think he said) 2015, but had switched as
soon as they could; UK, in contrast, keeps old systems going a Long
Time. Less so nowadays - most early digital terrestrial TV boxes will be
killed off by the switchover (a change to the encoding is coming in at
the same time), and those will only have been in use a comparatively low
number of years.
--
J. P. Gilliver. UMRA: 1960/1985 MB++G.5AL-IS-P--Ch++(p)Ar@T0H+Sh0!:`)DNAf

You asking for a slap across the face with a wet pedant?-}

hwh wrote:
On 2/5/12 7:04 PM, J. P. Gilliver (John) wrote:
But you've got to remember that this is the country that kept 405-line
going for, I think, longer after 625 started than it had been going
before that.

Erm, 405 started before the war and was alone until 1964? Then it
continued for another 20 years?

Someone said the last two years of 405 line signals were generated by an unusal
method, I think the word they used was "endearing". What was it?

BTW, the BBC shut down TV broadcasts in for World War II, and resumed
them at the exact point in the same broadcast after the war. :-)

Geoff.


--
Geoffrey S. Mendelson, N3OWJ/4X1GM
My high blood pressure medicine reduces my midichlorian count. :-(

In message , Geoffrey S.
Mendelson writes:
[]
Someone said the last two years of 405 line signals were generated by an unusal
method, I think the word they used was "endearing". What was it?

That was me. It was in Eire. For the last few years they, like the BBC,
made programmes in 625 lines, and used a digital standards converter to
produce the 405-line signals for those with old sets. Towards the end of
405 line in Eire (last 5 years I think), their standards converter broke
down, and rather than fix it they used a 405 line camera pointed at a
625 monitor (more or less).

BTW, the BBC shut down TV broadcasts in for World War II, and resumed
them at the exact point in the same broadcast after the war. :-)

Geoff.



--
J. P. Gilliver. UMRA: 1960/1985 MB++G.5AL-IS-P--Ch++(p)Ar@T0H+Sh0!:`)DNAf

You asking for a slap across the face with a wet pedant?-}

In article ,
lid says...

On 2/5/12 7:04 PM, J. P. Gilliver (John) wrote:
But you've got to remember that this is the country that kept 405-line
going for, I think, longer after 625 started than it had been going
before that.

Erm, 405 started before the war and was alone until 1964? Then it
continued for another 20 years?

gr, hwh

405:

1936 - 1939
1946 - 1985

625:
1964 - 2012 (BBC2 only until Nov. 69)

--

Terry

On Sun, 5 Feb 2012 18:38:40 +0000, "J. P. Gilliver (John)"
wrote:

In message , Geoffrey S.
Mendelson writes:
[]
Someone said the last two years of 405 line signals were generated by an unusal
method, I think the word they used was "endearing". What was it?

That was me. It was in Eire. For the last few years they, like the BBC,
made programmes in 625 lines, and used a digital standards converter to
produce the 405-line signals for those with old sets. Towards the end of
405 line in Eire (last 5 years I think), their standards converter broke
down, and rather than fix it they used a 405 line camera pointed at a
625 monitor (more or less).


I know all about telecine, but teletele? That's a new one.

d

In message , hwh
writes
Erm, 405 started before the war and was alone until 1964? Then it
continued for another 20 years?
I know colour came in, in 1967 on BBC2 but I thought that broadcasting
on BBC2 started in 1962. I know it was never on 405 lines.
--
Clive

On Sunday, February 5th, 2012, at 12:54:13h -0500, Arny Krueger wrote:

AFAIK, we haven't had analog TV broadcast anywhere in the US since June
2009.

That just ain't true.

What you are forgetting (or perhaps never heard of because you prefer
giving money to the cable company each month) is that Class A, Low Power
TV, and Repeater TV stations were not required to go digital only in
June 2009.

http://www.fcc.GOV/guides/dtv-transition-and-lptv-class-translator-stations

Nonetheless, your most local station of this type, formerly W66BV Detroit
has made the transition to digital.

http://en.wikipedia.ORG/wiki/W47DL-D

Incidentally, does your cable TV company include this station on the basic tier?

And an interesting new development in the Detroit market, is that the station
licensed to Ann Arbor (formerly analog UHF channel 31) is going to start
broadcasting with a high power signal on UHF channel 50 (which was vacated
when WKBD, now on UHF channel 14, stopped analog transmissions) from the
Southfield tower site, and will cease transmitting from Ann Arbor.

http://www.michiguide.COM/archives2012/2012/01/ion-television-fires-up-new-wp.html

On Sunday, February 5th, 2012, at 18:29:03h +0000,
Geoffrey S. Mendelson wrote:

and resumed them at the exact point in the same broadcast after the war.

That is an urban legend and just not true.

In article ,
J. P. Gilliver (John) wrote:
Towards the end of
405 line in Eire (last 5 years I think), their standards converter broke
down, and rather than fix it they used a 405 line camera pointed at a
625 monitor (more or less).

Surprised they could find a working one. In the UK, a 405 line camera
would have been B&W, and all those in use were colour long before 405 got
switched off.

--
*It was all so different before everything changed.

Dave Plowman London SW
To e-mail, change noise into sound.

On Sunday, February 5th, 2012, at 18:44:43h +0000, Clive wrote:

I know colour came in, in 1967 on BBC2 but I thought that broadcasting
on BBC2 started in 1962. I know it was never on 405 lines.

From http://www.hywel.org.UK/bbc2launch/

QUOTE

When BBC2 launched on April 20th 1964, ...


UNQUOTE

Remember also that BBC-2 was the first regular TV service transmitted in
UKofGB&NI on UHF channels.

So not only did it require a new TV to be able to tune to UHF and demodulate
the signal to 625 lines, it also needed a separate antenna to the VHF Band I
and VHF Band III antennas being used to receive the BBC television service
and the independent (commercial) television service.