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Homebrew superhet amateur bands receiver

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A demonstration of a homebrew receiver designed for SSB/CW reception and published in Lo-Key magazine December 2007.

RF Amp: BC547
Mixer: 3N140 (FET)
Local osc: 74HC04
Xtal filter: 4.434 MHz (3 xtals)
IF amp: BC547
Det: 1N414 x 2
BFO: BC547 x 2
AF preamp & amp: TDA2822

Demonstration is tuning 40 metres (7 MHz) at 3:30pm from Melbourne, Victoria.

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