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Armstrong J5
A little tube-shaped Armstrong J5 "aerial eliminating tube". "Stops aerial noises". From Armstrong Radio Apparatus, Westmont, NJ. The only internet reference is one in the Drexel U/Atwater Kent Museum collection. Seems to be able to filter noise and maybe as an antenna amp. Time to test it on my Radiola 60.
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“Once you eliminate the impossible...whatever remains, no matter how improbable, must be the truth." Sherlock Holmes.
Last edited by Dave A; 01-31-2025 at 03:52 PM.
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01-31-2025, 03:48 PM
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