NE5532N

[Mark-VA]

Found an op amp and thought I'd give it a try. Specs state 10Mhz GBW
XP Deus 2
General Program Max Freq 14kHz


Max Freq 24kHz



Max Freq 40kHz



Single Frequency 4.4kHz


Combined 4.4 kHz

[Mark-VA]

I've changed my mind, I don't think the amps are working correctly. Disconnected the amp and placed the variable resistor in series with one end of the receiving coil and get the same results.