[AMRadio] Clear 866A

Mark Foltarz Foltarz at rocketmail.com
Tue Oct 4 21:25:44 EDT 2016

I came across a box of tubes labeled 866A.The odd thing about them is there absolutely no mercury and no gettering - although there is clearly a getter mounted to one of the filament leads.Has anyone ever seen an 866A like described above ? I haven't tried these in any of my transmitters yet.


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