In attempting to help some one here with their remote trigger projectI ran across this. At the start there is FM mini-receiver.. Well, Something looksstrange to me here. It does not seem to possess the number of componentsI would expect to see in a receiver. It looks more like an OSC thatmaybe producing a shift with a near by freq. If that is the case, itcan't be too sensitive!But who am I? I am just a poor boy born in the foot hillsof Maine, where every one is related. Jamie

On a sunny day (Sun, 26 Dec 2010 14:23:54 -0500) it happened Jamie wrote in:It is a 'regenerative' receiver, and as such the catch is that it interfereswith any station on the same frequency, as it oscillates.The high gain comes from the feedback.The oscillation goes on and of above the hearing range, some hundreds of kHzperhaps.Probably the roll of of the 741 opamp gets rid of that ;-)I would not use a 'better' opamp as he suggests :-)

Will some one look at this PDF

Dec 26, 2010 21 Replies

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Phil Allison 15 years ago

** Smells like BS to me.

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** That is not such a tube.

An even if it were, it proves NOTHING about your mad claim of having them in 1946.

Wanker.

.... Phil

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Ian Field 15 years ago

AIUI the quenched regen allows much more positive feedback resulting in outrageous gain figures - but selectivity suffers.

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