Building a MW Model D 554 uh 7.5" Loopstick with 100/44 Litz Wire Questions


jerry_popiel
 

This is a question likely for Gary DeBock.

Gary, in your Dec 2009 writeup: "Supercharging the Tecsun PL-380 Portable", you stated that for best MW Reception on a 7.5" type 61 Ferrite Rod you wound 81 Turns of 40/44 Litz Wire to get an Inductance Value of 554 uh, for optimized MW results.

In a recent memo you mentioned that with a type 33 Amidon 7.5" Ferrite Rod you estimated that approx 50 turns of 100/44 wire would work for good MW reception. Would the same 50 Turns of 100/44 Litz Wire also apply for a type 61 Ferrite Rod? If more than 50 Turns were wound ie say 60 - 70 turns of 100/44 Litz, would this also add some LW capability to that Loopstick? Lastly should the wire be wound as an Offset Coil rather than a Center - Wound Loopstick?

Thanks
Jerry

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