heterodyne.

/het-er-uh-dahyn/US // ˈhɛt ər əˌdaɪn //UK // (ˈhɛtərəʊˌdaɪn) //

外音,外差法,外差式,外差

Definitions

1.
- ›noting or pertaining to a method of changing the frequency of an incoming radio signal by adding it to a signal generated within the receiver to produce fluctuations or beats of a frequency equal to the difference between the two signals.

1.
het·er·o·dyned, het·er·o·dyn·ing.
- ›to mix with a different frequency so as to achieve a heterodyne effect.

This method of receiving continuous wave signals is called the “heterodyne” method.
This is spoken of either as the “super-heterodyne” or as the “intermediate-frequency amplification” method of reception.
The connections for the autodyne, or self-heterodyne, receiving set are shown in Fig. 60.
From this you will see that any regenerative set can be used for autodyne, or self-heterodyne, reception.
In using either of these heterodyne receivers be sure to carefully adjust the B battery by means of the potentiometer.