first character second line sure looks like the siemens halske logo first character second line. plus the seams on top...
Tube ID
- Thread starter nolasally
- Start date
Your etched code "FOH" indicates French made in Radiotechnique plant. This is consistent with the cross-hatched top of the ECC83.
Matsushita used some Philips jigs when making their tubes, in the 1970s. So most of them also have cross-hatched tops.
So... the tube you have is prolly French made. Do not worry. Most Philips consortium made tubes are very good.
Your etched code "FOH" indicates French made in Radiotechnique plant. This is consistent with the cross-hatched top of the ECC83.
Matsushita used some Philips jigs when making their tubes, in the 1970s. So most of them also have cross-hatched tops.
So... the tube you have is prolly French made. Do not worry. Most Philips consortium made tubes are very good.
man u got better eyes than me. looks like the sideways h.
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they sure didNot sure that S-H made ECC83 tubes had cross-hatched tops.
@ceylon @Mr Boochie Now after looking at it the F looks more like a sideways H
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You are correct. Didn't look at the photos. They are Siemens-Halske made.
Sorry, for the confusion.
I didn't look at those specific photos. Sorry, about that.
You are correct. Didn't look at the photos. They are Siemens-Halske made.
Sorry, for the confusion.
i have my moments
If they test high and are quiet, they are very good tubes to own.
yes. very good.
BrassTeacher
Uncurable Tweaker
If the first character on the bottom row looks like an "=" with a vertical line through it, that would indicate Siemens und Halske
https://www.audiotubes.com/mullcode.htm
[EDIT] - Looks like some of you saw the Siemens mark before I could hit "reply"
https://www.audiotubes.com/mullcode.htm
[EDIT] - Looks like some of you saw the Siemens mark before I could hit "reply"
Back in the 1980s and early 1990s, electronic surplus stores in the southern NH and north of Boston were full of surplus Raytheon tubes. Many of them were Russian tubes made during the height of the cold war. Imprinted on the tubes was "made in England."
kvflyer
Super Member
I realise this doesn't answer your question but I am here to tell you that absolutely, Japan made some excellent tubes. Matsushita, Hitachi and Toshiba. Unfortunately, I did not realise this in the 60s when Japanese Audio was in its Zenith (Pun intended!).Matsushita made fine tubes. In fact, most Japanese-made tubes of the 1960-70s are good tubes.
kvflyer
Super Member
Yes, as noted above, often "Made In Germany" was not the same as "Made In Western Germany", just as "Made In England" was not the same as "Made In Great Britain". Deceit? Maybe, or maybe not. Tubes made in East Germany can be of excellent quality. Just as tubes made in Ukraine are excellent tubes... as long as they are NOT current manufacture. Yes, some new manufacture can be good. But those made before the 90s were excellent.
Think about this. Tubes made in the Soviet Union would most likely be excellent because... imagine the consequences of making an inferior product during the Cold War. Gulag comes to mind.
Think about this. Tubes made in the Soviet Union would most likely be excellent because... imagine the consequences of making an inferior product during the Cold War. Gulag comes to mind.
Dswankey
Lunatic Member
Tubes made during the Soviet Era were mostly made for military and industrial use. Not that many proletariat audiophiles or independent musicians in the USSR.
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