The
TUNE CONTROL is used to fine tune the receiver between the
10Khz increments shown on the CHANNEL SWITCHES (frequency select
switches). Each number between 0 and 9 each represent approximately
1Khz. Adjust the TUNE CONTROL for a pleasant sounding audio tone.
This tone is different for everyone but usually is between 500 and 1500Hz.
You will notice that for any transmitter, there are 2 places the TUNE
CONTROL can be adjusted to that produce a changing audio tone with a
dead gap,or zero beat, in between. Tune to the one that is loudest with
your transmitter and note the number associated with it for future reference.