How valves are made. - UK Vintage Radio Repair and Restoration Discussion Forum

Station X · 13th Oct 2015, 11:08 am

Saw this on TV recently:-

https://www.youtube.com/watch?v=8n4WVRKkmww

Unfortunately it's not the UK version with commentary by Tony Hirst.

Peter.N. · 13th Oct 2015, 12:31 pm

Interesting that, first time I have seen a modern construction system. Looks very similar to the CRT reconditioning process which I watched many times.

Thanks for posting that.

Peter

ThePillenwerfer · 13th Oct 2015, 1:08 pm

Very interesting to see a film of modern production.

I'd be curious to see just what they are making as the main valve featured was on a 4-pin base and another one looked very like an R-Type.

— Joe

13th Oct 2015, 2:01 pm

Bet they don't sound as good as an old, NOS, one (grin).

richrussell · 13th Oct 2015, 3:34 pm

That's great for a 1930's 845 triode, but lets see him hand make something marginally more modern like an EABC80 using those methods.

deliverance · 13th Oct 2015, 7:52 pm

Interesting stuff..

Radio Wrangler · 13th Oct 2015, 10:49 pm

I watched it at lunch at work, without any audio. It looked good.

Now I've played it at home with audio, I'm helpless. Listen to the commentary after the mention of the top secret black coating on the anode.... Oh boy, not a clue.

David

mole42uk · 14th Oct 2015, 8:59 am

"air molecules hinder the flow of electrons...."

Tractorfan · 9th Nov 2015, 6:38 pm

Hi,
Interesting that reference is made to the 'anode', rather than the 'plate' which is the usual American terminology.
Cheers, Pete.

Station X · 9th Nov 2015, 7:10 pm

Could be because the series was originally made by Canadians.

bikerhifinut · 10th Nov 2015, 12:40 am

Those kronzilla "toobs" are very expensive as you'd imagine, and the big one is a special original development by KR for their own Amp. Personally I don't knock them, they have found a niche market and are satisfying a demand at the high end of the market and appearance matters as much as performance. And at least they are helping prevent the pillaging of PX25 output triodes.
I read a review of their big amp. Very impressive and at the price of a decent house here in the north east I'd expect them to be a bit special.
Its the Bling end of the market, all markets have them.
We all know that my Sekonda quartz watch will keep exactly the same time as a Cartier or Patek Phillipe but that don't make them a bad thing or a rip off. Luxury for its own sake, its always existed. And you gotta admire the craftsmanship involved.

Andy.

13th Oct 2015, 11:08 am	#1
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,289	How valves are made. Saw this on TV recently:- https://www.youtube.com/watch?v=8n4WVRKkmww Unfortunately it's not the UK version with commentary by Tony Hirst. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

13th Oct 2015, 12:31 pm	#2
Peter.N. Dekatron Join Date: Jul 2008 Location: Charmouth, Dorset, UK. Posts: 3,601	Re: How valves are made. Interesting that, first time I have seen a modern construction system. Looks very similar to the CRT reconditioning process which I watched many times. Thanks for posting that. Peter

13th Oct 2015, 1:08 pm	#3
ThePillenwerfer Octode Join Date: Mar 2011 Location: Sheffield, South Yorkshire, UK. Posts: 1,453	Re: How valves are made. Very interesting to see a film of modern production. I'd be curious to see just what they are making as the main valve featured was on a 4-pin base and another one looked very like an R-Type. — Joe __________________ "Experts are only good at one thing: explaining why something will not work!"

13th Oct 2015, 2:01 pm	#4
Guest Guest Posts: n/a	Re: How valves are made. Bet they don't sound as good as an old, NOS, one (grin).

13th Oct 2015, 3:34 pm	#5
richrussell Heptode Join Date: Jul 2008 Location: Selby, North Yorkshire, UK. Posts: 979	Re: How valves are made. That's great for a 1930's 845 triode, but lets see him hand make something marginally more modern like an EABC80 using those methods.

13th Oct 2015, 7:52 pm	#6
deliverance Heptode Join Date: Apr 2015 Location: Manchester, UK. Posts: 711	Re: How valves are made. Interesting stuff..

13th Oct 2015, 10:49 pm	#7
Radio Wrangler Moderator Join Date: Mar 2012 Location: Fife, Scotland, UK. Posts: 22,899	Re: How valves are made. I watched it at lunch at work, without any audio. It looked good. Now I've played it at home with audio, I'm helpless. Listen to the commentary after the mention of the top secret black coating on the anode.... Oh boy, not a clue. David __________________ Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done

14th Oct 2015, 8:59 am	#8
mole42uk Nonode Join Date: Aug 2010 Location: Resolven, Wales; and Bristol, England Posts: 2,612	Re: How valves are made. "air molecules hinder the flow of electrons...." __________________ Richard Index: recursive loop: see recursive loop

9th Nov 2015, 6:38 pm	#9
Tractorfan Dekatron Join Date: Mar 2008 Location: St. Frajou, l'Isle en Dodon, Haute Garonne, France.(Previously: Ellesmere Port, Cheshire, UK.) Posts: 3,184	Re: How valves are made. Hi, Interesting that reference is made to the 'anode', rather than the 'plate' which is the usual American terminology. Cheers, Pete. __________________ "Hello?, Yes, I'm on the train, I might lose the signal soon as we're just going into a tunn..."

9th Nov 2015, 7:10 pm	#10
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,289	Re: How valves are made. Could be because the series was originally made by Canadians. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.

10th Nov 2015, 12:40 am	#11
bikerhifinut Octode Join Date: Nov 2013 Location: Penrith, Cumbria, UK Posts: 1,993	Re: How valves are made. Those kronzilla "toobs" are very expensive as you'd imagine, and the big one is a special original development by KR for their own Amp. Personally I don't knock them, they have found a niche market and are satisfying a demand at the high end of the market and appearance matters as much as performance. And at least they are helping prevent the pillaging of PX25 output triodes. I read a review of their big amp. Very impressive and at the price of a decent house here in the north east I'd expect them to be a bit special. Its the Bling end of the market, all markets have them. We all know that my Sekonda quartz watch will keep exactly the same time as a Cartier or Patek Phillipe but that don't make them a bad thing or a rip off. Luxury for its own sake, its always existed. And you gotta admire the craftsmanship involved. Andy.