Hi Rob,
can you possibly borrow an oscilloscope somewhere to check the respective outputs of the frequency
generator/synthesizer, pulse generator/transmitter and - carefully, at first with a -30 dB
attenuator - the amplifier? Usual outputs of synthesizer and transmitter of (*insert NMR manufacturer
company name here*) NMR consoles are usuallyin the 0.5…3 V range. If you find only a few mV here,
that’s the likely issue.
RF amplifiers normally need said attenuation to not fry the scope. From the found peak-to-peak
voltage you can (web-) calculate the output in Watts, which should be somewhere in the 20-100 W
range at full power…
Cheers
Bert
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Received on Mon Oct 05 2026 - 10:37:31 MST