Seldom mentioned nowadays is the use of a grid-dip meter to measure the value
of an inductor. Using a known capacitance in parallel with the inductor, you
loosely couple the grid dip meter to the coil and tune for the dip. Once the
resonant frequency is determined, you use the formula for a parallel resonant
circuit, manipulate and solve for the inductance. Voila!
Of course, it's not a very precise figure that you'll arrive at, but it will
suffice.
Other instruments "of days gone by" are the Q-meter (Heathkit had a great
one!), and an inductance bridge (General Radio/GenRad had several models).
And, would you believe, some inexpensive multimeters on the market can
measure inductance, too.
73,
Bert N4CW
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