6J8P FM radio circuit diagram
FM radio (TV sound) works in the ultra-high frequency range. If a super-heterodyne circuit is used under amateur production conditions, since there are many high-frequency tuning circuits in the entire radio, device adjustment is difficult. The super-regeneration receiving method is now used, so that a small amount of materials can be used and it is relatively easy to make. The following is a brief description of the production.
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