Testing a 1U4

Alan W. Fremmer AWFremmer at AOL.COM
Wed Aug 30 17:04:25 EDT 2006

Fellow Collectors/Restorers:
I have a B&K 707 DynaJet Tube Tester and would like to test some tubes  from 
a '50's portable shortwave radio.  The chart I have does not include  settings 
for the 1U4 and the 1U5.  Would anyone out there know which socket  to use 
and what the filament settings and sensitivity settings should be?   Thanks, in 
advance, for any help.
73, Alan - KB2HEI

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