This switch is used to turn off the lamp so as
to save the current drain when the FRG-7 is operated from internal dry cells.
This switch turns off the supply voltage for
1)0th AC anti DC operation.
Phone jack is provided for private listening
and the speaker is disconnected when the plug is in-serted in this jack.
This jack is for recording purpose and the
output level is set to approximately 50 mV regardless of setting of the VOLUME
(14) DIAL SET
Main tuning dial calibrator.
The S-meter indicates the relative signal
strength of the received signal. It is calibrated in S-unit from S-1 to S-9 and
in dB over S-9.
The LOCK lamp lights up when the synthesized
heterodyne oscillator is unlocked.
(17) (18) MHz
This MI-lz control synthesizes heterodyne
oscillator to the harmonics of 1 MHz crystal oscillator. The scale is
calibrated in MHz with the frequency show-ing the correct setting of the
(19) (20) PRESELECT
The PRESELECTOR control tunes the
receiver front end. The scale is calibrated with the fre- ~ quency showing the
correct setting for various bands.