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 NEW  Matt presents bias and operation data for the 6V6 tube in SE operation - 6V6 Single-Ended (SE) Ultra Linear (UL) Bias Optimization.

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 Post subject: Detector Tube Radio
PostPosted: 18 Sep 2018, 02:15 
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Joined: 18 Sep 2018, 01:15
Posts: 5
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


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 Post subject: Re: Detector Tube Radio
PostPosted: 29 May 2019, 00:08 
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Joined: 18 Sep 2018, 01:15
Posts: 5
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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 Post subject: Re: Detector Tube Radio
PostPosted: 20 Sep 2019, 06:16 
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Joined: 18 Sep 2018, 01:15
Posts: 5
September 18th installed in the tuner SONY ST-SA3ES
the result is impressive, exhibits a dynamic range of sounds


https://yadi.sk/d/nyTxlBauMMLyFw
https://yadi.sk/d/uuNfb1V4DzxTeQ


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