Messaggio 3 dicembre 2012, 19:39

Vacuum Tube mod 811a damaged in AL811H p.a.


The very cheap Vacuum Tube model 811a (original) damaged in AMERITRON AL811H in my RF power amplifier after a year of DX !
Now I want to try out the model 572B and also the mod 811a. made ​​in china ! :-)
guess which of the 4 is burned ?
IK0ZCW Alberto Devitofrancesco Presidente C.I.S.A.R. sezione di Roma IQ0HB
https://www.cisarroma.it - https://www.ik0zcw.it - https://www.qrz.com/db/ik0zcw


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