[Hammarlund] 6C4WA for SP-600?

[Jakub Jakubowicz]

Hello,
I would like to ask is 6c4wa tube suitable for SP-600
in
the place of factory mounted 6c4?
I am asking because i see different internal apparance
of thats tubes.
I hear aslo that 6c4 will not working in r-390
receivers in pace of 6c4wa, hence i think that are
different tubes.
Have anyone any experience in this matter?
best 73 
Oskar


		
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