Identify an IF strip? - UK Vintage Radio Repair and Restoration Discussion Forum

Oliver35 · 29th Apr 2017, 5:10 pm

I've just received a jolly little box of bits that I bought on eBay- some old 600v caps of the grey-metal-box kind, plus some slider pots and a few other bits and pieces. The really jolly part though, is this elderly IF strip with EF50s, two of which remain, although I've got loads of them floating around. The question is- what's it from?

Oliver

Heatercathodeshort · 29th Apr 2017, 6:13 pm

Looks like a Pye D16T. John.

Oliver35 · 29th Apr 2017, 6:38 pm

Blimey, looking at photos, it looks as if you're right. I'd convinced myself that it wasn't Pye, as I hadn't realised they used that sub-chassis assembly. Silly me. Now all I need is the rest of the set, I've always wanted a D16T. Maybe I'll just have to make all the rest from scratch..

Thanks John.

Oliver

Edit: Having looked through an excellent set of Flikr photos, it seems the caps and pots are also from B/D16Ts.

Oliver35 · 1st May 2017, 1:58 pm

Further examination of me box of bits and pieces, I find that I've got the EB34 from this presumably long-defunct PYE. Since the vision and sound detectors are both present and identifiable as EB91s, what was the EB34 used for? Sync seperation? DC restoration?

Out of interest, I looked up the valve lineup to see how much of it I actually had, which is most of it. I don't have, and up till now was not familiar with, the ECC34, so I had a quick look on eBay to find out how available they are. Prices seem surprisingly high for a non-audio valve, are they really that scarce? Or has an audio use for them been found? I hope I'm not drifting too far o/t with these explorations..

Oliver

Heatercathodeshort · 1st May 2017, 2:45 pm

The EB34, V3A is the interlace filter. J.

M0FYA Andy · 1st May 2017, 2:52 pm

The ECC34 seems to be another one of those valves whose price has gone sky-high. I can only assume that the audio brigade have latched onto them for some reason.
I'm just glad none of the equipment I'm interested in uses them!
Andy

29th Apr 2017, 5:10 pm	#1
Oliver35 Pentode Join Date: Apr 2016 Location: Halesworth, Suffolk, UK. Posts: 188	Identify an IF strip? I've just received a jolly little box of bits that I bought on eBay- some old 600v caps of the grey-metal-box kind, plus some slider pots and a few other bits and pieces. The really jolly part though, is this elderly IF strip with EF50s, two of which remain, although I've got loads of them floating around. The question is- what's it from? Oliver Attached Thumbnails

29th Apr 2017, 6:13 pm	#2
Heatercathodeshort Dekatron Join Date: Jun 2005 Location: Warnham, West Sussex. 10 miles south of DORKING. Posts: 9,147	Re: Identify an IF strip? Looks like a Pye D16T. John.

29th Apr 2017, 6:38 pm	#3
Oliver35 Pentode Join Date: Apr 2016 Location: Halesworth, Suffolk, UK. Posts: 188	Re: Identify an IF strip? Blimey, looking at photos, it looks as if you're right. I'd convinced myself that it wasn't Pye, as I hadn't realised they used that sub-chassis assembly. Silly me. Now all I need is the rest of the set, I've always wanted a D16T. Maybe I'll just have to make all the rest from scratch.. Thanks John. Oliver Edit: Having looked through an excellent set of Flikr photos, it seems the caps and pots are also from B/D16Ts. Last edited by Oliver35; 29th Apr 2017 at 6:47 pm.

1st May 2017, 1:58 pm	#4
Oliver35 Pentode Join Date: Apr 2016 Location: Halesworth, Suffolk, UK. Posts: 188	Re: Identify an IF strip? Further examination of me box of bits and pieces, I find that I've got the EB34 from this presumably long-defunct PYE. Since the vision and sound detectors are both present and identifiable as EB91s, what was the EB34 used for? Sync seperation? DC restoration? Out of interest, I looked up the valve lineup to see how much of it I actually had, which is most of it. I don't have, and up till now was not familiar with, the ECC34, so I had a quick look on eBay to find out how available they are. Prices seem surprisingly high for a non-audio valve, are they really that scarce? Or has an audio use for them been found? I hope I'm not drifting too far o/t with these explorations.. Oliver

1st May 2017, 2:45 pm	#5
Heatercathodeshort Dekatron Join Date: Jun 2005 Location: Warnham, West Sussex. 10 miles south of DORKING. Posts: 9,147	Re: Identify an IF strip? The EB34, V3A is the interlace filter. J.

1st May 2017, 2:52 pm	#6
M0FYA Andy Nonode Join Date: May 2007 Location: Preston, Lancashire, UK. Posts: 2,511	Re: Identify an IF strip? The ECC34 seems to be another one of those valves whose price has gone sky-high. I can only assume that the audio brigade have latched onto them for some reason. I'm just glad none of the equipment I'm interested in uses them! Andy