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BPF / noise attenuator for TA7642 - improved design

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andreidaniel

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Hi all! Recently I have found some new diagrams for the well known TA7642/LMF501. Here are presented some diagrams for band pass filter and at last an improved FET buffter with 2 tuned circuits.

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source: https://www.rf-world.jp/dls/fujihira/pdf/Fujihira-radio-s08.pdf

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*Please note that for the diagram from page 7 there is used a loopstick antena + 2 x red coils (MW oscillators) in series! The capacitor between those 2 tuned circuits is not necessary to use because of the internal capacity of the VC.
 

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