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Detector Tube Radio
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Author:  dongl2018 [ 18 Sep 2018, 02:15 ]
Post subject:  Detector Tube Radio

FM detector developed by me for IF 10.7Mhz for perfect sound for a tube tuner

This FM detector was installed in the tube tuner FISHER KM-60 instead of the primary with good results.
For the IF amplifier, a limiter was added
sample sound
https://yadi.sk/d/ayphrVgd3Szrom
https://yadi.sk/d/3azaC55j3TKwD4

Good listening

Author:  dongl2018 [ 29 May 2019, 00:08 ]
Post subject:  Re: Detector Tube Radio

Recent studies have shown that C55 C56 is not needed and may need a limiter in the IF
This scheme is considered as a digital single-ended DAC and intermediate frequency receiver as a DSD stream, therefore the demodulation quality should be higher than what you usually heard. Tuning coils is not difficult if you use a tuning frequency synthesizer, otherwise you have to work hard

Image

This is version 1, the beginning of development and was used for transistor radio

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