Posted on Apr 6, 2012    5549

All capacitors in this circuit are disc ceramic. Fixed-value resistors are 1/.-or 1/2-W carbon. Rl controls the gain of Ul. RFCl is a miniature 2.5mH rf choke.

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Tl has 30 primary turns of #28 enamel wire on an Amidon FT50 -43 ferrite toroid core, and the secondary has four turns of #28 wire.

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