[Boatanchors] Heil Microphone Equalizer

[David Knepper]

Desperately need a schematic or better yet a manual for the EQ300 that Heil produced some years ago.

Heil did not have the manual available.

A PDF file would be great or even a jpeg of the schematic.

Thank you 

David Knepper, W3CRA/W3ST
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