Bob383rad
New Head-Fier
- Joined
- Nov 20, 2014
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tejastubes.com
Sorry
Sorry
Hi there,
i've received two new tubes for test with my BA : rca 6sn7 grey glass. One of them has a silver ring at the bottom of the bottle and marked H6E, the other is marked H3E ans hasn't got this silver ring. What is the difference : year of production ?
Hi there,
i've received two new tubes for test with my BA : rca 6sn7 grey glass. One of them has a silver ring at the bottom of the bottle and marked H6E, the other is marked H3E ans hasn't got this silver ring. What is the difference : year of production ?
Most of the RCAs I've seen don't have that slim band of getter visible, but there seem to have been batches where the glass coating stopped a little short and produced just that.
They were made by GEC / Marconi / MWT / Osram in the UK but you will also find Holland examples (with Black phenolic bases).
Hi there,
i've received two new tubes for test with my BA : rca 6sn7 grey glass. One of them has a silver ring at the bottom of the bottle and marked H6E, the other is marked H3E ans hasn't got this silver ring. What is the difference : year of production ?
These tend to be pretty things, especially the boxes, so photos would be nice.