Do you mean this bump?
My scope is pretty accurate, just recalibrated it with test signal. I measured the frequency with my multimeter, but now I know it shows false numbers. When I test the frequency, the wavelenght in scope gets shorter, so it measured too high frequencies all the time
.
The TV inductor has around 11,6kHz at 7mH (27nF parasitic + real capacitance), TX around 11,3kHz (34nF parasitic + real capacitance) at 5,77mH and RX around 10,4kHz at 6,22mH (38nF parasitic + real capacitance) measured with scope. I guess the usb cable added even more parasitic capacitance
I guess I have to wind another coil <.<
I used some glue after I tied everything up with yarn and then i covered everything directly with alu tape.
My scope is pretty accurate, just recalibrated it with test signal. I measured the frequency with my multimeter, but now I know it shows false numbers. When I test the frequency, the wavelenght in scope gets shorter, so it measured too high frequencies all the time

The TV inductor has around 11,6kHz at 7mH (27nF parasitic + real capacitance), TX around 11,3kHz (34nF parasitic + real capacitance) at 5,77mH and RX around 10,4kHz at 6,22mH (38nF parasitic + real capacitance) measured with scope. I guess the usb cable added even more parasitic capacitance

I guess I have to wind another coil <.<
I used some glue after I tied everything up with yarn and then i covered everything directly with alu tape.
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