UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Vintage Television and Video

Notices

Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc.

Closed Thread
 
Thread Tools
Old 26th May 2018, 1:50 pm   #81
boxdoctor
Rest in Peace
 
Join Date: Sep 2010
Location: Ripley, Derbyshire, UK.
Posts: 785
Default Re: TV system differences?

Quote:
Originally Posted by Richard_FM View Post
I presume SCART sockets were an early addition to French TVs to get round some issues with creating a SECAM output in early VCRs & home computers.
As I recall, SCART sockets were quite suddenly made a compulsory fitment on all T.V.s sold in France at one time. This was done by the French government of the day to try to stem the import of far-eastern sets which were more than slightly competitive in price and performance than the home-grown products.
I think they tipped off their own manufacturers first thongh!
IMHO the SCART was one of the worst designed multiway connectors ever.
Incidentally, I believe Thomson made at least one 625/819 line dual standard receiver for the Belgian market at one time. The (U.K.) company I worked for had some of these with the 819 line components not fitted, but marked on the P.C.B. screen print. Tony.
boxdoctor is offline  
Old 26th May 2018, 2:51 pm   #82
kan_turk
Hexode
 
kan_turk's Avatar
 
Join Date: Mar 2014
Location: Dublin, Ireland
Posts: 396
Default Re: TV system differences?

The uncontestable advantage of the SCART connector was its extremely low cost which was, argueably, pretty well the only criterion being used in the industry at the time

J
kan_turk is offline  
Old 26th May 2018, 2:58 pm   #83
emeritus
Dekatron
 
Join Date: Jan 2012
Location: Brentwood, Essex, UK.
Posts: 5,316
Default Re: TV system differences?

My late uncle had a dual standard TV (I forget the make) with a six-position turret tuner providing two Band I, two Band III, and two UHF preset stations. He got rid of it after the 405 line switch-off as it was too much hassle fiddling with the UHF tuning control to watch all the three channels receivable in the London area.
emeritus is offline  
Old 26th May 2018, 5:25 pm   #84
Nuvistor
Dekatron
 
Nuvistor's Avatar
 
Join Date: Aug 2013
Location: Wigan, Greater Manchester, UK.
Posts: 9,427
Default Re: TV system differences?

It appears that was the Pye\Ekco Integrated tuner, pity, a quick change of the programming of the mechanism would have given him the required channels.
__________________
Frank
Nuvistor is offline  
Old 27th May 2018, 9:04 am   #85
boxdoctor
Rest in Peace
 
Join Date: Sep 2010
Location: Ripley, Derbyshire, UK.
Posts: 785
Default Re: TV system differences?

Re my post #81 (above), which refers to Richard FM's post#58.
About three 'clock this morning I awoke having remembered the dual standard (625/819) sets I had encountered were NOT Thomson, but Siemens model FC211.
They were very reliable, if I remember rightly. Tony.
boxdoctor is offline  
Old 27th May 2018, 11:38 am   #86
AC/HL
Dekatron
 
AC/HL's Avatar
 
Join Date: Nov 2003
Location: Heckmondwike, West Yorkshire, UK.
Posts: 9,637
Default Re: TV system differences?

At least we only need to do a rescan these days!
AC/HL is offline  
Old 8th Jun 2018, 8:25 pm   #87
Richard_FM
Octode
 
Richard_FM's Avatar
 
Join Date: Sep 2017
Location: Stockport, Cheshire, UK.
Posts: 1,999
Default Re: TV system differences?

I was wondering if dual standard 405 / 625 sets were made for the Irish market in the early 1960s, before BBC2 started in 1964.

Later on, were triple standard sets made for use in Ireland, capable of receiving 405 VHF, 625 VHF & 625 UHF made?

Apart from Hong Kong (cable only) did anywhere else use 405 lines?

I had a feeling Gibraltar did, but can only find 625 lines standard B/G listed.
Richard_FM is offline  
Old 8th Jun 2018, 10:02 pm   #88
Graham G3ZVT
Dekatron
 
Graham G3ZVT's Avatar
 
Join Date: May 2010
Location: Greater Manchester, UK.
Posts: 18,675
Default Re: TV system differences?

I don't think the ability of a set to tune in VHF/625 was considered a third system. Philips made a four button mechanical tuner with a nylon switch corresponding to each button for setting the band/line std. Very useful in council flats with all VHF distribution.

I'm trying to remember if it even allowed 405/UHF, someone will no doubt remind me
__________________
--
Graham.
G3ZVT
Graham G3ZVT is online now  
Old 8th Jun 2018, 10:16 pm   #89
peter_scott
Dekatron
 
peter_scott's Avatar
 
Join Date: May 2003
Location: Edinburgh, UK.
Posts: 3,273
Default Re: TV system differences?

Sony 9-90 does all four permutations.

Peter
peter_scott is offline  
Old 8th Jun 2018, 10:34 pm   #90
emeritus
Dekatron
 
Join Date: Jan 2012
Location: Brentwood, Essex, UK.
Posts: 5,316
Default Re: TV system differences?

The dual standard Ferguson that my mum bought in 1969 had a link on the printed circuit board for selecting VHF 625 line reception.
emeritus is offline  
Old 8th Jun 2018, 10:55 pm   #91
Richard_FM
Octode
 
Richard_FM's Avatar
 
Join Date: Sep 2017
Location: Stockport, Cheshire, UK.
Posts: 1,999
Default Re: TV system differences?

Quote:
Originally Posted by peter_scott View Post
Sony 9-90 does all four permutations.
I see there was also a version for 625 / 819 lines.

https://www.radiomuseum.org/r/sony_t...um_tv990u.html

Was there a 525 / 625 line one as well?
Richard_FM is offline  
Old 9th Jun 2018, 9:03 am   #92
Mr Hoover
Hexode
 
Mr Hoover's Avatar
 
Join Date: Jan 2007
Location: Faro, Portugal
Posts: 269
Default Re: TV system differences?

Sony made the TV 110uwe model for 525 and 625 lines,as far as I know there wasn't
a TV990 525/625 version.
https://www.radiomuseum.org/r/sony_t...e_tv110uw.html
The nearest single standard 525 line version of the TV 990 is the TV920U.
There was also a single standard Western
European variation (system B).
Mr Hoover is offline  
Old 9th Jun 2018, 9:20 am   #93
kan_turk
Hexode
 
kan_turk's Avatar
 
Join Date: Mar 2014
Location: Dublin, Ireland
Posts: 396
Default Re: TV system differences?

625 line VHF and 625 line UHF were not two different standards - system 'I' does not specify frequency bands - its just that in GB for legacy reasons (ie 405 line system occupying VHF bands) it was only used at UHF while in Ireland DS sets typically had 405 & 625 line VHF initially with UHF being introduced later as additional services required more spectrum

J
kan_turk is offline  
Old 9th Jun 2018, 1:00 pm   #94
Richard_FM
Octode
 
Richard_FM's Avatar
 
Join Date: Sep 2017
Location: Stockport, Cheshire, UK.
Posts: 1,999
Default Re: TV system differences?

I've heard that Zenith in the USA had a range of simple modifications to allow their VHF only sets to pick up a single UHF channel.

I presume in countries where UHF was introduced at a later stage set top boxes were introduced for older TVs, like the band III ones here.
Richard_FM is offline  
Old 9th Jun 2018, 3:49 pm   #95
Nuvistor
Dekatron
 
Nuvistor's Avatar
 
Join Date: Aug 2013
Location: Wigan, Greater Manchester, UK.
Posts: 9,427
Default Re: TV system differences?

Page 45 describes one of the simple system devised to receive UHF in the USA with a cheap addition to a suitable VHF tuner.
Set top boxes were also available in the USA for UHF reception.

https://www.americanradiohistory.com...cs-1960-01.pdf
__________________
Frank
Nuvistor is offline  
Old 9th Jun 2018, 4:06 pm   #96
kan_turk
Hexode
 
kan_turk's Avatar
 
Join Date: Mar 2014
Location: Dublin, Ireland
Posts: 396
Default Re: TV system differences?

I actually have an RCA version of that tuner but unfortunately, no UHF 'channel strips' which had to have been purchased separately.

Outboard 'set-top' box UHF converters were indeed introduced in the US and throughout continental Europe where no change of standard was involved - just adding additional frequency capability as in the case of BIII
converters in Britain

J
kan_turk is offline  
Old 9th Jun 2018, 4:11 pm   #97
Nuvistor
Dekatron
 
Nuvistor's Avatar
 
Join Date: Aug 2013
Location: Wigan, Greater Manchester, UK.
Posts: 9,427
Default Re: TV system differences?

USA UHF converter, page 15
https://www.americanradiohistory.com...cs-1952-05.pdf
__________________
Frank
Nuvistor is offline  
Old 9th Jun 2018, 8:24 pm   #98
Dave Moll
Dekatron
 
Dave Moll's Avatar
 
Join Date: Feb 2005
Location: West Cumbria (CA13), UK
Posts: 6,118
Default Re: TV system differences?

Even the relatively-modern analogue set I had before inheriting a digital one included VHF channels in its automatic search.
__________________
Mending is better than Ending (cf Brave New World by Aldous Huxley)
Dave Moll is offline  
Old 9th Jun 2018, 9:08 pm   #99
Richard_FM
Octode
 
Richard_FM's Avatar
 
Join Date: Sep 2017
Location: Stockport, Cheshire, UK.
Posts: 1,999
Default Re: TV system differences?

The Philips set I bought in 2001 had this feature, & even had a table of channel frequencies for different countries in the hand book.

My 2 digital TVs can also tune into VHF.
Richard_FM is offline  
Old 9th Jun 2018, 10:34 pm   #100
emeritus
Dekatron
 
Join Date: Jan 2012
Location: Brentwood, Essex, UK.
Posts: 5,316
Default Re: TV system differences?

My multi standard Icecrypt T5000 STB searches Band III VHF before searching UHF when I need to retune.
emeritus is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 7:28 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Copyright ©2002 - 2023, Paul Stenning.