How Television Works - Page 2 - UK Vintage Radio Repair and Restoration Discussion Forum

Graham G3ZVT · 13th May 2019, 10:58 pm

Quote:

Originally Posted by Restoration73

This was directed by Frank Wells, son of H.G.Wells, and who also wrote the story of the
charming CFF film "Supersonic Saucer", a sort of E.T. prototype.

A film close to my heart since I saw a 16mm print at boarding school in 1961. I didn't know about the Wells connection though.

The other memorable film for me from that CFF collection was "The Flying Eye" which really captured the imagination of my 7 year old self. A professor mounts a miniature TV camera under a model aircraft and invents the first drone.

Heatercathodeshort · 25th Oct 2019, 9:20 am

Just watched the above short film on Talking Pictures. It features a Bush TV12 in detail with some great pictures of the internals. John.

Panrock · 25th Oct 2019, 6:11 pm

Yes - ain't Talking Pictures TV wonderful! It is coming up with a steady stream of material to interest us here. In this case, there's a previous thread:

https://www.vintage-radio.net/forum/...d.php?t=156335

stevehertz · 25th Oct 2019, 6:51 pm

Can you provide a link please? Thanks.

Panrock · 25th Oct 2019, 7:01 pm

Steve, I did. Can't you see it?

HamishBoxer · 25th Oct 2019, 7:54 pm

No link seen here either.Though I see the previous thread link but that does not show that film.

chriswood1900 · 25th Oct 2019, 8:04 pm

I don't think there is any catch up service on Talking Pictures TV you have to view it whilst its being broadcast, unless someone knows differently.
Chris

Panrock · 25th Oct 2019, 8:06 pm

I only posted the link to the previous thread here on the same subject.

I don't have a link to the actual 1951 British film. However, in an effort to compensate, here's a link to the 1939 American film "How Television Works".

https://www.youtube.com/watch?v=2QGcFbygFq8

Steve

AC/HL · 25th Oct 2019, 8:09 pm

Threads merged

https://talkingpicturestv.co.uk/

Welsh Anorak · 26th Oct 2019, 1:13 pm

I rather like the term 'sprayed'. When I had to explain how the image was created I used the analogy of a variable spray water pistol moving across the screen, rather like how a car spray painter covers a panel. It was less likely to cause a glazed expression than using terms like scanning and electron beam!

dave walsh · 26th Oct 2019, 2:05 pm

I seem to keep missing this despite monitoring schedules. My intention is always to get a recording. I can't blame it on the fact that there's no CH81 on the very basic Terrestial Freeview service in Rammy as I've managed to blunder yet again here in the South, where [of course] everything is always much better and Freeview is manifest

. This happened in August as well when the film "Meet Mr Lucifer" containing vintage TV shots, was shown. A kind member sent me a DVD copy in the end. I thinks it's great as a film [as well as the technical content] although not everyone agrees! If anyone could do that for me re "How Television Works" I'd be really grateful

.

Dave W
Bexhill

Panrock · 28th Dec 2019, 10:19 pm

This film is being shown again on TPTV, Sunday 29th Dec at 1745.

Steve

29th Dec 2019, 7:05 pm

What was the camera tube (called, is etc.)?

PaulM · 29th Dec 2019, 7:26 pm

It was a CPS Emitron - Cathode Potential Stabilised Emitron.

See: https://www.smecc.org/emitron_television_cameras.htm

It was not very successful as the 3" Image Orthicon (IO) was already on the market - disparagingly called the 'American Tube' by the BBC, but by then much better than the CPS Emitron. The EMI tubes suffered from a major defect called 'peeling' where the image seemed to peel away after hitting a highlight. The sensitivity was also poor.

The BBC held out against the IO saying that they were noisy and 'contrasty', but it was a losing battle - the IO would reign supreme, especially after the introduction of the 4.5" development by Marconi/EEV and RCA.

Best regards,

Paul M
www.becg.org.uk
www.projectvivat.co.uk

dave walsh · 29th Dec 2019, 8:48 pm

I was just about to thank you for that info Steve when I realised it was 19-15pm Too Late!

As I'd gone through my Radio Times Xmas Edition only two hours ago, checking out Film 4 and Talking Pictures in particular, I was a bit puzzled

I'd made a Victor Meldrew comment on another thread this afternoon and "I can't believe it!"

The TPTV schedule is-

1600 Passport To Pimlico
1745 How Television works A
1800 Get Some In
1830 A News Camera Men Documentary B
1850 The Magic Box [Friese Green]

The Radio Times listing leaves out A and B

My request at post 31* still stands but I suspect that I'm destined to not to see or record this [on Talking Pictures anyway

]

Dave W

'LIVEWIRE?' · 30th Dec 2019, 9:38 am

Anyone see the short program on Talking Pictures TV last evening (29th. Dec.) 'How Television works' It must have been made in the late 40s or early 50s, but was an interesting insight into the process, from studio to transmitter and receiver, as to how it was done, including simplified explanations of how both the Camera Tube and receiver picture tube worked.

Dave Moll · 30th Dec 2019, 10:32 am

Unfortunately, I hadn't been aware of it prior to seeing this thread, or I would have watched it.

raditechman · 30th Dec 2019, 11:14 am

I watched it and also recorded it thanks to a reminder that it was on as there already is a thread on this topic.
https://www.vintage-radio.net/forum/...how+television

John

dave walsh · 30th Dec 2019, 11:16 am

You've missed the original How Television Works Kentode thread under Vintage TV [as I did] chaps and my wail of anguish yesterday

Dave W

SNAP John!

Station X · 30th Dec 2019, 12:09 pm

Threads merged.

25th Oct 2019, 9:20 am	#22
Heatercathodeshort Dekatron Join Date: Jun 2005 Location: Warnham, West Sussex. 10 miles south of DORKING. Posts: 9,147	Film. 'How Television Works 1951' Just watched the above short film on Talking Pictures. It features a Bush TV12 in detail with some great pictures of the internals. John.

25th Oct 2019, 6:11 pm	#23
Panrock Nonode Join Date: Feb 2005 Location: Worcestershire, UK. Posts: 2,533	Re: Film. 'How Television Works 1951' Yes - ain't Talking Pictures TV wonderful! It is coming up with a steady stream of material to interest us here. In this case, there's a previous thread: https://www.vintage-radio.net/forum/...d.php?t=156335

25th Oct 2019, 6:51 pm	#24
stevehertz Dekatron Join Date: Sep 2011 Location: Rugeley, Staffordshire, UK. Posts: 8,830	Re: Film. 'How Television Works 1951' Can you provide a link please? Thanks. __________________ A digital radio is the latest thing, but a vintage wireless is forever..

25th Oct 2019, 7:01 pm	#25
Panrock Nonode Join Date: Feb 2005 Location: Worcestershire, UK. Posts: 2,533	Re: Film. 'How Television Works 1951' Steve, I did. Can't you see it?

25th Oct 2019, 7:54 pm	#26
HamishBoxer Dekatron Join Date: Aug 2007 Location: W.Butterwick, near Doncaster UK. Posts: 8,931	Re: Film. 'How Television Works 1951' No link seen here either.Though I see the previous thread link but that does not show that film. __________________ G8JET BVWS Archivist and Member V.M.A.R.S

25th Oct 2019, 8:04 pm	#27
chriswood1900 Octode Join Date: Jan 2007 Location: Dorridge, West Midlands, UK. Posts: 1,479	Re: Film. 'How Television Works 1951' I don't think there is any catch up service on Talking Pictures TV you have to view it whilst its being broadcast, unless someone knows differently. Chris

25th Oct 2019, 8:06 pm	#28
Panrock Nonode Join Date: Feb 2005 Location: Worcestershire, UK. Posts: 2,533	Re: Film. 'How Television Works 1951' I only posted the link to the previous thread here on the same subject. I don't have a link to the actual 1951 British film. However, in an effort to compensate, here's a link to the 1939 American film "How Television Works". https://www.youtube.com/watch?v=2QGcFbygFq8 Steve

25th Oct 2019, 8:09 pm	#29
AC/HL Dekatron Join Date: Nov 2003 Location: Heckmondwike, West Yorkshire, UK. Posts: 9,642	Re: How Television Works Threads merged https://talkingpicturestv.co.uk/

26th Oct 2019, 1:13 pm	#30
Welsh Anorak Dekatron Join Date: Apr 2005 Location: North Wales, UK. Posts: 6,916	Re: How Television Works I rather like the term 'sprayed'. When I had to explain how the image was created I used the analogy of a variable spray water pistol moving across the screen, rather like how a car spray painter covers a panel. It was less likely to cause a glazed expression than using terms like scanning and electron beam! __________________ Glyn www.gdelectronics.wales

26th Oct 2019, 2:05 pm	#31
dave walsh Dekatron Join Date: Jan 2006 Location: Ramsbottom (Nr Bury) Lancs or Bexhill (Nr Hastings) Sussex. Posts: 5,817	Re: How Television Works I seem to keep missing this despite monitoring schedules. My intention is always to get a recording. I can't blame it on the fact that there's no CH81 on the very basic Terrestial Freeview service in Rammy as I've managed to blunder yet again here in the South, where [of course] everything is always much better and Freeview is manifest. This happened in August as well when the film "Meet Mr Lucifer" containing vintage TV shots, was shown. A kind member sent me a DVD copy in the end. I thinks it's great as a film [as well as the technical content] although not everyone agrees! If anyone could do that for me re "How Television Works" I'd be really grateful. Dave W Bexhill Last edited by dave walsh; 26th Oct 2019 at 2:11 pm.

28th Dec 2019, 10:19 pm	#32
Panrock Nonode Join Date: Feb 2005 Location: Worcestershire, UK. Posts: 2,533	Re: How Television Works This film is being shown again on TPTV, Sunday 29th Dec at 1745. Steve

29th Dec 2019, 7:05 pm	#33
Guest Guest Posts: n/a	Re: How Television Works What was the camera tube (called, is etc.)?

29th Dec 2019, 7:26 pm	#34
PaulM Hexode Join Date: Nov 2006 Location: Near Lincoln, UK. Posts: 483	Re: How Television Works It was a CPS Emitron - Cathode Potential Stabilised Emitron. See: https://www.smecc.org/emitron_television_cameras.htm It was not very successful as the 3" Image Orthicon (IO) was already on the market - disparagingly called the 'American Tube' by the BBC, but by then much better than the CPS Emitron. The EMI tubes suffered from a major defect called 'peeling' where the image seemed to peel away after hitting a highlight. The sensitivity was also poor. The BBC held out against the IO saying that they were noisy and 'contrasty', but it was a losing battle - the IO would reign supreme, especially after the introduction of the 4.5" development by Marconi/EEV and RCA. Best regards, Paul M www.becg.org.uk www.projectvivat.co.uk

29th Dec 2019, 8:48 pm	#35
dave walsh Dekatron Join Date: Jan 2006 Location: Ramsbottom (Nr Bury) Lancs or Bexhill (Nr Hastings) Sussex. Posts: 5,817	Re: How Television Works I was just about to thank you for that info Steve when I realised it was 19-15pm Too Late! As I'd gone through my Radio Times Xmas Edition only two hours ago, checking out Film 4 and Talking Pictures in particular, I was a bit puzzled I'd made a Victor Meldrew comment on another thread this afternoon and "I can't believe it!" The TPTV schedule is- 1600 Passport To Pimlico 1745 How Television works A 1800 Get Some In 1830 A News Camera Men Documentary B 1850 The Magic Box [Friese Green] The Radio Times listing leaves out A and B My request at post 31* still stands but I suspect that I'm destined to not to see or record this [on Talking Pictures anyway ] Dave W Last edited by dave walsh; 29th Dec 2019 at 8:55 pm.

30th Dec 2019, 9:38 am	#36
'LIVEWIRE?' Rest in Peace Join Date: Mar 2006 Location: N.W. Oxfordshire(Chipping Norton) Posts: 7,306	'How Television Works' on TPTV Sunday evening Anyone see the short program on Talking Pictures TV last evening (29th. Dec.) 'How Television works' It must have been made in the late 40s or early 50s, but was an interesting insight into the process, from studio to transmitter and receiver, as to how it was done, including simplified explanations of how both the Camera Tube and receiver picture tube worked.

30th Dec 2019, 10:32 am	#37
Dave Moll Dekatron Join Date: Feb 2005 Location: West Cumbria (CA13), UK Posts: 6,127	Re: 'How Television Works' on TPTV Sunday evening Unfortunately, I hadn't been aware of it prior to seeing this thread, or I would have watched it. __________________ Mending is better than Ending (cf Brave New World by Aldous Huxley)

30th Dec 2019, 11:14 am	#38
raditechman Heptode Join Date: Feb 2007 Location: West London, UK. Posts: 867	Re: 'How Television Works' on TPTV Sunday evening I watched it and also recorded it thanks to a reminder that it was on as there already is a thread on this topic. https://www.vintage-radio.net/forum/...how+television John

30th Dec 2019, 11:16 am	#39
dave walsh Dekatron Join Date: Jan 2006 Location: Ramsbottom (Nr Bury) Lancs or Bexhill (Nr Hastings) Sussex. Posts: 5,817	Re: 'How Television Works' on TPTV Sunday evening You've missed the original How Television Works Kentode thread under Vintage TV [as I did] chaps and my wail of anguish yesterday Dave W SNAP John! Last edited by dave walsh; 30th Dec 2019 at 11:22 am.

30th Dec 2019, 12:09 pm	#40
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,287	Re: How Television Works Threads merged. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.