Putting a sig gen set at 2.7 mhz. on my Philco 37-38, I receive it at approx. 5 and 7 Mgz. as well. What would explain this?

Brian,

It is most likely the second and third harmonic of the original 2.7 MHz signal.

Radiodoc
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:Putting a sig gen set at 2.7 mhz. on my Philco 37-38, I receive it at approx. 5 and 7 Mgz. as well. What would explain this?