[Boatanchors] B & W Q-multiplier/notch filter

J. Allen Call w7ksg at juno.com
Fri Dec 14 15:31:56 EST 2007

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Looking for any information on a Barker and Williamson Q-Multiplier/Notch
filter Model 340-A.  Uses
a 12AX7.  Thanks in advance.

J
W7KSG

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