Tungsram-Cyrkon

 An interesting Tungsram Cyrkon tube.
Two radio collector friend's hands is interesting Tungsram UCL11 and HP4101 tube was labeled (Mr.Lőrincz and Mr. Eperjesi the "lucky" I thank them for the pictures and information).
The top tube of the usual inscription Tungsram barium tube, but the mantle of Cyrkon, second-class product in inscription.
The reason for this can not be other than to check the pipe did not meet the manufacturer's parameters.
The question is: is the solution (other name) to other factories were also normal.

• h_tungsram_cyrkon_hp4101 (18 KB)
• h_tungsram_cyrkon_hp4101_top (21 KB)
• h_tungsram_cyrkon_hp4101_front1 (20 KB)

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Dear Sandor

To my opinion the above depicted photo's are not related to an HP4101 and certainly not to an UCL11!

I have the impression, it should be a double grid tube DG4100.

Kind regards
Wolfgang

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 Dear Wolfgang!
You are right that perhaps the wrong tube type (You can see the other 4101!)
But with the opposition on the pipes Tungsram interesting second-class wanted to draw attention to the marking.
My English is minimal, the Google translator working for me:)
Sincerely,
Alexander

Really look more like 4100! You were right.
But the idea is something else!
Thanks!

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 Dear Wolfgang! Unfortunately, I did not have the wrong caption to improve, its well-seen-on DG4100. (To fix the system does not allow multiple, or I do not know how to:))
But I stress again the intention is to second-class tubes Tungsram interesting (Cyrkon) was called.
Thanks
Alexander

• h_tungsram_cyrkon_dg4100 (21 KB)

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Dear Sandor

Yesterday I made already the correction, by deleting the false inscription UCL11. Also I removed your pictures on the HP4101 tube.

 
Today I added to the description of the DG4100 your interesting information: Tungsram's second-class production was labeled "CYRKON"

Kind regards.

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