Successful Rebuilt of a 15GP22 at ETF

[old_tv_nut]

Originally Posted by NewVista

The inside black conductive coating on 21AXP's have what looks like a "window" strip at top of guns .25" x 1.5" (dark silver non transparent) - is this the getter ?

Where is getter on 15G's and what size is it ?

I look on later 21" color roundies and they only have conductive coating + 1" red band - and no getter ? (because they were more confident of seal ?)

All tubes must have a getter. It is essential to getting the final vacuum quality, even if the tube does not leak. Sometimes it is somewhere not visible, like under the conductive aquadag coating.