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Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc. |
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13th Oct 2020, 10:58 am | #21 | |
Dekatron
Join Date: Sep 2006
Location: Kilmarnock, Ayrshire, UK.
Posts: 5,420
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Re: Can you identify these early 1950's (?) TV bits ?
Quote:
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Cheers, Trevor. MM0KJJ. RSGB, GQRP, WACRAL, K&LARC. Member |
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13th Oct 2020, 11:05 am | #22 |
Octode
Join Date: Mar 2020
Location: Blackburn with Darwen, Lancashire, UK.
Posts: 1,567
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Re: Can you identify these early 1950's (?) TV bits ?
Hi GJ that sounds good a lot better tube than mine.
I have just been testing mine using a DC buck converter and the lowest this one goes to is 150 Volts, with 6.3 Volts on the heaters and a 11K resistor in series with the grid, the best I get is 0.9 mA grid current, which gives me 140 Volts across the grid-cathode junction. This is a very poor tube in my mind, the screen goes negative on high brightness settings, feedback lines start to appear before the image has any real contrast and a generally blurry image. So the readings do bear out Trevor's figures. Adrian |
13th Oct 2020, 11:29 am | #23 | |
Dekatron
Join Date: Sep 2007
Location: Oxfordshire, UK.
Posts: 4,310
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Re: Can you identify these early 1950's (?) TV bits ?
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I have no use for the tube and never will, I'm afraid. So I'll put it up in the For Sale thread for someone who might be able to use it, albeit with the bits and pieces downwind of the cathode and grid untestable here. Likewise the chassis. Cheers, GJ
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13th Oct 2020, 11:44 am | #24 |
Dekatron
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Location: Kilmarnock, Ayrshire, UK.
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Re: Can you identify these early 1950's (?) TV bits ?
The tube should be snapped up quick GJ.
I'd be interested in the remnants of the Chassis if it's postable.
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Cheers, Trevor. MM0KJJ. RSGB, GQRP, WACRAL, K&LARC. Member |
13th Oct 2020, 12:45 pm | #25 |
Pentode
Join Date: Oct 2003
Location: Henley on Thames, Oxfordshire, UK.
Posts: 242
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Re: Can you identify these early 1950's (?) TV bits ?
I'll be interested in the tube. Many years ago I obtained a perfect cabinet and back for a Bush TUG24 and since then a chassis for a TV24.
The only help needed is how to mount the front controls and to obtain the brackets for the chassis ears at the back. It does look like your chassis is from the TUG24 looking at the top rear mounts. Mark. |
13th Oct 2020, 2:24 pm | #26 |
Dekatron
Join Date: Mar 2008
Location: Worthing, West Sussex, UK
Posts: 5,185
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Re: Can you identify these early 1950's (?) TV bits ?
I could do with the LOPT for my TV22, if it is any good, that is!
Mark |
13th Oct 2020, 3:36 pm | #27 |
Dekatron
Join Date: Sep 2007
Location: Oxfordshire, UK.
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Re: Can you identify these early 1950's (?) TV bits ?
I still feel I owe you something for those transformers you let me have when I dropped the projection screen off all those years ago Trevor ! I'm also grateful for the advice above about the tube. So the chassis is yours for the price of the postage if you want it - I'll PM you when I've got a number from Parcel2Go. Sorry if I've disappointed anyone who was hoping for a part. You could PM Trevor if you're desperate and see if he can spare it.
It does seem like there's more than one person interested in the tube. So I will do that properly and post in the For Sale thread. I'll leave it open for a few days and run a hat, so don't feel you have to sit glued to the forum waiting for the instant it comes up (probably later today). Cheers, GJ
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13th Oct 2020, 5:14 pm | #28 |
Dekatron
Join Date: Sep 2006
Location: Kilmarnock, Ayrshire, UK.
Posts: 5,420
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Re: Can you identify these early 1950's (?) TV bits ?
Hi.
Thanks GJ for the Chassis. Mark I'll check the LOPT and if it's OK it's yours. It's really the chassis I'm after not so much the individual components Once it's here I'll pm you with the news.
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Cheers, Trevor. MM0KJJ. RSGB, GQRP, WACRAL, K&LARC. Member |
16th Oct 2020, 1:58 pm | #29 |
Dekatron
Join Date: Mar 2008
Location: Worthing, West Sussex, UK
Posts: 5,185
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Re: Can you identify these early 1950's (?) TV bits ?
Many thanks Trevor, good to see you back on the forum.
I have not had much luck with the rewound LOPT I now always dry them out thoroughly by passing a current through the windings for a few days. I was quite gutted when the original LOPT failed within an hour of completing the restoration, as the picture was superb. Mark |