Posted by swlem3 on December 09, 2022 at 15:20:49.

In Reply to: Re: LF loopstick posted by Bruce McCreath on December 09, 2022 at 14:42:24.

Well Bruce, I'll tell you but I don't think it will help. The capacitance will vary with the permiability of the stick, and the inductance of both coils. In my particular instance, the main coil needed around 3.3 nf for resonance at 2200m and the pickup coil needed roughly 2.5 nh to match the desired output impedance. I chose to go "Hi-Q", since it allowed me to avoid the use of an amplification stage, which would be adding more noise into the system. It also avoids the practical problems of feeding a preamp remotely. If you're not interested in a specific band like I am, going broadband and using a low-noise preamp would work well. You could lower the Q of the stick and set the circuit to be broadly resonant at the middle of the band of frequencies of choice. Ray

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