Darius FM tuner circuit and images
description of the EC900 EF95 input and mixing part
A few words about the ratio detector
tube stereo decoder implementation with example
The VHF FM IF with EF89 2x 6BN6 and EF91
Low Phase Noise - push-pull input section with ECC91/6J6
In the old Documents is a description of the tuner circuit.
Description
diagram describing
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