Secondary: ********** d = 27 mm h = 82 mm (ratio 3:1) N = 500 wired = 0,16 mm wirel = 42 m RDC = 40 ohm RAC = 52 ohm computed f0: 2,82 MHz computed L: 1,916 mH computed C: 1,660 pF computed XL: 34808 ohm estimated Q0: 38 measured f0: 2,47 MHz (2,17 MHz with minitoroid topload) measured RDC: 66 ohm Old primary (solenoid): *********************** d = 50 mm h = 24 mm N = 8 wired = 1,0 mm RDC = 23,5 mohm computed L: 3,39 uH (gives C=1,225 nF / 1,587 nF with topload) computed coupling k: 0,2975 New primary (flat spiral): ************************** din = 51 mm dout = 83 mm N = 4,6 wired = 1,75 mm (4,2 mm with insulation) RDC = 5,9 mohm RAC = 69,0 mohm computed L: 2,13 uH (gives C=1,949 nF / 2,525 nF with topload) measured L: 1,80 uH (gives C=3 nF with topload) computed Q: 416 computed coupling k: 0,1421 (+0.5":0,1961 -0.5":0,0889)