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Author Topic: WANTED: schematic for HF noise canceller  (Read 2779 times)

AG4DG

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WANTED: schematic for HF noise canceller
« on: April 29, 2002, 04:39:49 PM »

Where can I find a schematic for a noise canceller for HF? I would like to homebrew a noise canceller/preamplifier that would be similar to the MFJ-1026. (Unfortunately, the MFJ manuals available online don't include the schematic.)

I would particularly appreciate an explanation on how the various parts of the circuit work (noise amplifier, noise phase shifter, signal preamplifier, filters, etc.) and the transformer specifications I need (so that I can use something available to me).
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