E188CC/7308/6922


Hi,

Trying to identify a tube. Its only markings is E188cc in white label which ressemble Siemens.No branding, nothing else on the picture but grey pins instead of gold pins which is almost universal in this type. Supposedly used in the Navy (but which one). Anybody has a knowledge of this ? Could not identify from Tubemonger or Brent Jesse.
andr

Showing 4 responses by andr

Thanks for Tube world. In deed, but could not find grey pins in 7308 nor e188CC. But......after my intial post, did some research and found a comment on same tube saying they are Amperex from the 60's made for military.
Follow up. Found some posts in previous posts last april. Yes they do have ridges on top so that should point them toward Amperex or Philips. But that doesn't explain grey pins if they are Amperex.

A gentleman said they would be Sylvania because they were the only ones making grey pins in 7308. But then, why would they be marked the europeean code E188CC. Those tubes have been supposedly picked from Polaris submarines.
I've got the tube delivered. 6 of them with the same codes on them.

G A C

7 4 E

On another thread, someone said they were Philips made in Hitachi, Japan. Had them in my Premier 16 CJ pre for maybe 20 hrs now. Probably not broken it yet, but they have less gain than my Amperex 6922 Green label. Less vibrant in the upper mids, with deeper and less focused bass. I would let them in for a while but just received Siemens 7308 which I'm dying to try.