Loop Antenna Preamplifier Circuit

  
This preamplifier has a built-in regeneration control boost gain selectivity. CI is a single or multi-gang AM broadcast-band tuning capacitor. LI is a ferrite loop antenna, tapped at about 15 to 25% of total turns. This circuit should prove useful for low-frequency (up to 3 MHz) reception,
Loop Antenna Preamplifier Circuit - schematic

where a loop would be advantageous to reduce man-made noise pickup.




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