[Lowfer] Loop antenna with regeneration

[John Bruce McCreath]

Over the weekend I built the circuit shown on the linked site below and was quite impressed with how it
performed on the AM broadcast band with just a 14 inch diameter, 8 turn loop tuned by a 395pF varicap.
I'm sure that it could be used at LF as well with appropriate C and L values.  Scroll down the page to the
schematic titled:

DL7MWN Q-Multiplier circuit.

http://theradioboard.com/rb/viewtopic.php?p=38740

R6 is removed from the tank circuit, leaving just the C and L.   If you bother to read the entire post, the
resistor is explained as representing the R losses in the tank circuit.  I intend to try it with a ferrite rod 
loopstick to see how that compares to the 14 inch frame loop.

73, J.B., VE3EAR

LowFER Beacon "EAR"
188.830 kHz. QRSS30
EN93dr