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Christopher Planicka, United States of America (USA) - Tube collection

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ID = 34562
Photo Christopher Planicka

Below you find a part of the tube collection Christopher Planicka.
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Excerpt from the tube collection of Christopher Planicka. These images (tube photos) were uploaded to the respective tubes or valves by Christopher Planicka.

These particular 7F7 tubes must have been meant to be 6SL7GT with and octal base, as on the other side of the glass we can see where they sandblasted everything except 'GT' off of the glass, then made the modifications necessary (the black sleeve comes off with some convincing, and you will find what appears to be a normal 6SL7 envelope with its octal pins inserted into a glue/cement of some kind incased in a metal ring, the one you would typically find at the base of a loctal, and ofc, the loctal pins). These were found in a single sleeve of 5 Service Master tubes. No one I know or asked has every seen anything like it - so, thought I would share as it seems it would be a great addition to a museum. I can get more pictures if requested.
7F7
Common type USA tube/semicond. USA
 

Tube collector page of valve collector Christopher Planicka as «own HP at RMorg»
As a member of Radiomuseum.org Christopher Planicka displays items in his/her tube collection. Tubes are called valves in British oriented countries.
Valve and tube collectors as well as radio collectors are invited to join Radiomuseum.org. Every member can display separate collections of tubes, radios etc.

Christopher Planicka started his/her tube collection (valve collection) here on 19.Apr.2024. [index-en]

  
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