Owner`s manual

8 Getting Started, continued
AM SYNCHRONOUS OPERATION, continued
If interference is present, press the
SSB
button to
select the sideband with the least interference. When
AM/SYNC has been activated, moving the main tuning
knob will cause the SYNC circuit to momentarily
disengage (indicated by SYNC flashing), then back on
again when tuning has stopped. AM SYNC will not
operate properly on intermittent transmissions such as
those encountered on CB radio bands, for example.
For those types of transmissions, use the AM mode.
Press the
AM
SYNC
button to turn the synchronous
detector off (return to the AM mode) before
selecting LSB or USB modes.
SSB OPERATION
Activate SSB mode by pressing the
SSB
button. AM
SYNC must be turned off.
Tuning in a single sideband (SSB) signal can be some-
what frustrating for the first time listener. In either of
the SSB modes, LSB (lower sideband), or USB (upper
sideband), the receiver will select the 2.3 kHz band-
width automatically. Generally, LSB is used below
10 MHz and USB is used above 10 MHz. When initially
tuning in the desired station, tune slowly. If the station
is unintelligable, try the other sideband, again tuning
slowly. A station tuned in on the wrong sideband is
totally unreadable but a station mistuned on the
correct sideband may sound like Donald Duck.
Further tuning will result in a more normal voice pitch.
USING THE RF GAIN CONTROL
Maximum receiver sensitivity is obtained with the RF
GAIN control set fully clockwise. Rotating the control
counterclockwise reduces the receiver gain, thereby
allowing reception of only relatively strong signals. For
most normal operation, the control is set fully clock-
wise. If signal distortion is noticed, which is possible
when tuning in very strong (local) stations, rotate the
control counterclockwise until the distortion just
disappears and the desired station is still heard. The
RF GAIN control can also be rotated counterclockwise
to reduce background noise when no signal is present
(during tuning, for example), but only relatively strong
signals will be heard with a reduced RF GAIN control
setting.