In article , "Andreu"
wrote:

I have several small measuring instruments in my shack, but I have
always been unable to find plans to build a DIP METER for use in
LF Freqs. I already have a LEADER DM that begins at 1.5 Mhz but I
would like to be able to measure resonant circuits at say 40 Khz
or 470 Khz. Is there a thecnical difficulty I should be aware of ?
Any help or reference appreciated.

Andrew-

Do you have an audio oscillator that goes up to 470 KHz? That could be
hooked up to a resonant circuit through a resistor, and a high impedance
AC voltmeter connected to measure voltage across the circuit. You would
look for dips or peaks depending on whether it was series or parallel.

73, Fred, K4DII