The green & brown caps are polyester.

Don’t use the electrolytic, they are notoriously inaccurate in value, plus they are lossy (ESR).

I am a bit puzzled by your last posting, but looking back to the one on 26 April, if you calculate the

value of the C, assuming the L is correct from: - fr=1/2pi sqrt LC, for f=526kHz, the cap comes out as 915.52pf, which is within 10% of the nominal value, &

assuming C is correct, that L is 91.552uH, again within 10%.

As capacitors & inductors are not specified to better that, you have done well!

Real components don’t behave quite the same as the perfect versions of theory, for instance, inductors have capacitance between the adjacent turns, as well

as series resistance.

All real components exhibit stray capacitance to earth & other circuit parts.

Even resistors, which are easy to test at dc, don’t look quite the same at 500KHz, & are even more unlike the dc model at, say, 50MHz.

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