Sorry, could i rephrase that. I think my aerial socket is like yours, the twin strip. How do i convert coax into the twin strip and where could i get the lead form?
...ariel socket is two tiny little holes, not the coax one like ono the aurora converter. Is this normal, and what is it likely to be dangerous to just plug the set in?
@G1DRP Yes it is incredibly bright but it is only a 9" tube type MW22-7. Mullard/Philips. Some tubes of the period such as the EMI 10" 3/4 ran at around 4.5kv and still gave brilliant pictures. A lot is down to the thickness and make up of the screen phosphor and of course these early tubes were not aluminised. Aluminising requires a minimum of around 8-9kv for the electron stream to penetrate the thin aluminium coating. J.
Thanks for the great demonstration John, I have finally got my B16T going although the ' sliders ' are a bit ' iffy ' but am looking for an ECC34 in decent condition as vertical scanning is ' low '.Other than that, I'm very pleased with the results, it was the first model set my family ever owned, and a bespoke table made for it in the late 40's has survived, the same ' footprint ' as the base, so it is now having to bear a lot of weight again !.Thanks for superb interesting uploads,Roger.
How were you able to show a 625 line video recording. On a 405 line set. Please keep the answer simple as I'm not a technically minded person just interested in television, and its development. I remember the big build up to the BBC 2 introduction of 625 line TV in the 60's.
@ludvan64 Hello. A standards converter is required to convert the 625 line CCIR signal to system A 405 lines. From 1969 these were installed at the main transmitters and were HUGE! Technology has moved on and I use an AURORA converter that is about the size of a large match box.. It also produces a test card! No modifications are required to the vintage receiver. J.
@vinylseat Thank you. During my search on Youtube I have found that really old sets some 70 years old are still working some German. The inside of a prewar Telefunkan looked so neat and uncluttered compared to the Bush on your video. I had a Ferguson's 12" single channel, and a 19" with a very good pretuned VHF radio, but it the TV always going wrong. I now live abroad, and always buy PHILIPS.
@ludvan64 The very first British television receivers were built on similar lines to the German telefunken. Very over engineered and unaffordable to the general public. The Pye 9" set in the video dates from 1946 and was one of the first sets manufactured after WW2 that was considered to be affordable back then to the wealthy. The Pye set is actually very neat, built on two chassis with the connections via octal plugs and sockets. Post war developments were rapid due to radar experience gained.
@vinylseat You should see that Telefunken. I'm sorry I don't have the URL. It's valves are so clear, not burnt glass. There is plenty of space between components. In my experience, British sets suffered from the wires insulation corroding due to the cramping, and the heat. That was true of the Ferguson TV we had, and an EkcoU29 Bakelite radio we had. The proof is in the fact that all those famous British brands regretfully don't exist, or are made abroad.
@ludvan64 I know the Telefunken set very well. I worked for over 40 years in the television repair trade. The British sets were built to a price and to be honest never suffered burnt wiring when in service. Most of the sets in my collection are around 60 years of age and the wiring is still good. Very few world wide television companies exist today, the sets being made in China or Turkey with just the name badges familiar. The U29 was an entry model and my examples have the original wiring.
@vinylseat I've just bought a Philips 32"LCD which is made in Hungary. My 29" Philips Matchlline is still good after 10 Year of hard service, but its 4/3, and as nearly all films to day are 16/9 I decided it was time for a change.The Matchline was made in Singapore. The worst TV I had was a Panasonic, made in Wales with a Mulard CRT made in France after a few years the picture got a green tint, and I had to repair the remote myself bu soldering fine wires because the printed board cracked.
All CRT television receivers scan vertically and horizontally. The vertical rate is 50c/s for the U.K. [60c/s U.S.] and the horizontal is 10,125kc/s for the original British 405 system and around 15,000kc/s for the U.S. 525 line system. Failure of either scan in theory will cause a vertical or horizontal line to appear on the screen. [line or field collapse] For U.S. substitute 'sweep' for 'scan'.
I knew the 'flyback transformer' had to have originated some time in history, but as it seems it was after 1946 -- and technically you can make due without it.
Sadly, System A had AM sound and no sync pulses in the way PAL and NTSC do.
Alan Blumlein the designer of the British Television system in 1936 described the method of obtaining flyback EHT from the line timebase retrace but it was not taken up due to costs and reliability of the system. mains transformers were used to obtain the EHT in this country up to around 1949. The A.M. sound was never a problem and produced very high quality reproduction. Stereo sound is all very well but it I would rather have good qualty AM than cheaply produed FM. Thanks for your interest.
Great video. That's one hell of a transformer. I have the B16T table version. It came from a man who bought it second hand in the 50's to replace one he had bought new. I don't think I'll have a go at getting that one going, Mains EHT. These sets have much more style than their replacement B18T and D18T. I believe the B16T was out first, in fact before the post war tv sevice restarted after the war. Thanks for a great video.
Hello Richard, Thanks for you nice comments. To obtain pictures and sound on a 405 line television receiver you must either play 405 line video recordings via a system 'A' modulator [into the aerial socket] or convert the present day 625 line CCIR system [including digital] to the old system 'A' 405 line system. Until recent times this has been a very difficult operation but you can now obtain from America the AURORA standards converter that will do the job. John.
Nice tube, but if i remember the tubes never wore out because the set often caught fire....ahhh the good old days, how did anything work ?
MANTLEBERG 2 months ago
Sorry, could i rephrase that. I think my aerial socket is like yours, the twin strip. How do i convert coax into the twin strip and where could i get the lead form?
CBETelevisionNetwork 5 months ago
...ariel socket is two tiny little holes, not the coax one like ono the aurora converter. Is this normal, and what is it likely to be dangerous to just plug the set in?
CBETelevisionNetwork 5 months ago
Hi,i have got a pye lv20 from 1949. I would like to restore it, but i have noticed that the arie
CBETelevisionNetwork 5 months ago
@G1DRP Yes it is incredibly bright but it is only a 9" tube type MW22-7. Mullard/Philips. Some tubes of the period such as the EMI 10" 3/4 ran at around 4.5kv and still gave brilliant pictures. A lot is down to the thickness and make up of the screen phosphor and of course these early tubes were not aluminised. Aluminising requires a minimum of around 8-9kv for the electron stream to penetrate the thin aluminium coating. J.
vinylseat 10 months ago
Thanks for the great demonstration John, I have finally got my B16T going although the ' sliders ' are a bit ' iffy ' but am looking for an ECC34 in decent condition as vertical scanning is ' low '.Other than that, I'm very pleased with the results, it was the first model set my family ever owned, and a bespoke table made for it in the late 40's has survived, the same ' footprint ' as the base, so it is now having to bear a lot of weight again !.Thanks for superb interesting uploads,Roger.
flammasherman 1 year ago
I've got an Australian PYE television set still works after 35 or so years.
Its a 12 volt portable set very fancy for its day.
fuzzybearish 1 year ago
How were you able to show a 625 line video recording. On a 405 line set. Please keep the answer simple as I'm not a technically minded person just interested in television, and its development. I remember the big build up to the BBC 2 introduction of 625 line TV in the 60's.
ludvan64 1 year ago
@ludvan64 Hello. A standards converter is required to convert the 625 line CCIR signal to system A 405 lines. From 1969 these were installed at the main transmitters and were HUGE! Technology has moved on and I use an AURORA converter that is about the size of a large match box.. It also produces a test card! No modifications are required to the vintage receiver. J.
vinylseat 1 year ago
@vinylseat Thank you. During my search on Youtube I have found that really old sets some 70 years old are still working some German. The inside of a prewar Telefunkan looked so neat and uncluttered compared to the Bush on your video. I had a Ferguson's 12" single channel, and a 19" with a very good pretuned VHF radio, but it the TV always going wrong. I now live abroad, and always buy PHILIPS.
ludvan64 1 year ago
@ludvan64 The very first British television receivers were built on similar lines to the German telefunken. Very over engineered and unaffordable to the general public. The Pye 9" set in the video dates from 1946 and was one of the first sets manufactured after WW2 that was considered to be affordable back then to the wealthy. The Pye set is actually very neat, built on two chassis with the connections via octal plugs and sockets. Post war developments were rapid due to radar experience gained.
vinylseat 1 year ago
@vinylseat You should see that Telefunken. I'm sorry I don't have the URL. It's valves are so clear, not burnt glass. There is plenty of space between components. In my experience, British sets suffered from the wires insulation corroding due to the cramping, and the heat. That was true of the Ferguson TV we had, and an EkcoU29 Bakelite radio we had. The proof is in the fact that all those famous British brands regretfully don't exist, or are made abroad.
ludvan64 1 year ago
@ludvan64 I know the Telefunken set very well. I worked for over 40 years in the television repair trade. The British sets were built to a price and to be honest never suffered burnt wiring when in service. Most of the sets in my collection are around 60 years of age and the wiring is still good. Very few world wide television companies exist today, the sets being made in China or Turkey with just the name badges familiar. The U29 was an entry model and my examples have the original wiring.
vinylseat 1 year ago
@vinylseat I've just bought a Philips 32"LCD which is made in Hungary. My 29" Philips Matchlline is still good after 10 Year of hard service, but its 4/3, and as nearly all films to day are 16/9 I decided it was time for a change.The Matchline was made in Singapore. The worst TV I had was a Panasonic, made in Wales with a Mulard CRT made in France after a few years the picture got a green tint, and I had to repair the remote myself bu soldering fine wires because the printed board cracked.
ludvan64 1 year ago
wow, neat , it scans verticaly and horozontaly ?
modern cathrode ray tube televisons i think only scan horosontaly (i am not sure it that is true)
windoes98se 2 years ago
All CRT television receivers scan vertically and horizontally. The vertical rate is 50c/s for the U.K. [60c/s U.S.] and the horizontal is 10,125kc/s for the original British 405 system and around 15,000kc/s for the U.S. 525 line system. Failure of either scan in theory will cause a vertical or horizontal line to appear on the screen. [line or field collapse] For U.S. substitute 'sweep' for 'scan'.
vinylseat 2 years ago
Australia and NZ experimented with System A, but adopted 626/50 later converted to PAL.
Canada had NTSC forced on it, when it was 525/60.
eyreland 2 years ago
I knew the 'flyback transformer' had to have originated some time in history, but as it seems it was after 1946 -- and technically you can make due without it.
Sadly, System A had AM sound and no sync pulses in the way PAL and NTSC do.
eyreland 2 years ago
Alan Blumlein the designer of the British Television system in 1936 described the method of obtaining flyback EHT from the line timebase retrace but it was not taken up due to costs and reliability of the system. mains transformers were used to obtain the EHT in this country up to around 1949. The A.M. sound was never a problem and produced very high quality reproduction. Stereo sound is all very well but it I would rather have good qualty AM than cheaply produed FM. Thanks for your interest.
vinylseat 2 years ago
Your very welcome Richard. I don't want to put guys off with an over technical explanation. Nice to know you appreciated it. John.
vinylseat 2 years ago
John
Thanks for the very full exploration
Richard :)
spannerworks1 2 years ago
Great video. That's one hell of a transformer. I have the B16T table version. It came from a man who bought it second hand in the 50's to replace one he had bought new. I don't think I'll have a go at getting that one going, Mains EHT. These sets have much more style than their replacement B18T and D18T. I believe the B16T was out first, in fact before the post war tv sevice restarted after the war. Thanks for a great video.
Cheers, Des.
FIFTIESCRUISER 2 years ago
A very interesting video I have never been interested in TV sets but I have found this very interesting I like the death ray of 5000 volts
How do you get the 405 to work with modern video ?
Regards
Richard
spannerworks1 2 years ago 2
Hello Richard, Thanks for you nice comments. To obtain pictures and sound on a 405 line television receiver you must either play 405 line video recordings via a system 'A' modulator [into the aerial socket] or convert the present day 625 line CCIR system [including digital] to the old system 'A' 405 line system. Until recent times this has been a very difficult operation but you can now obtain from America the AURORA standards converter that will do the job. John.
vinylseat 2 years ago