Re: 80 meter bpf toroid winding 30 turns givel 4.3 micro Henrys, not 3.8


Here's my setup.  The two cal standards lying over are the open and through.  If you're familiar with QRP Labs products you will recognize the band pass filter, with the toroids unmounted.  This is an 80 meter kit, 30 turns of #28 wire on a T37 doesn't leave much room for bunching or squeezing.

Join to automatically receive all group messages.