Watkins-Johnson Company WJ-8711A, Installation, Operation And Maintenance Manual

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LOCAL OPERATION WJ-8711A DIGITAL HF RECEIVER
3-24
Channel Number:
Increments (clockwise) or decrements (counterclockwise) the channel
number in the channel view mode when the CHANNEL VIEW key
LED is lit (
paragraph 3.2.23 ). The range of channel numbers is 00
to 99. Rotating the edit knob clockwise while channel number 99 is
displayed causes channel number 00 to be displayed and rotating
counterclockwise while 00 is displayed causes 99 to be displayed
(i.e., wrap-around).
Scan Setup:
Rotating the edit knob clockwise or counterclockwise scrolls up or
down through the scan setup menu, respectively, when the SCAN
SETUP key LED is lit (
paragraph 3.2.26
).
3.2.35
THE PHONES OUTPUT VOLUME CONTROL KNOB
The PHONES output volume control knob is located to the right of the PHONES jack on the
bottom left-hand corner of the front panel. This knob is used to increase or decrease the volume level of the
audio output on both channels of the PHONES jack. A clockwise rotation increases the volume of a nominal
audio signal up to approximately 10 milliwatts and a counterclockwise rotation decreases the volume to
approximately 0 milliwatt. This control is also operational while the receiver is in remote mode.
3.2.36
THE SPEAKER KEY AND LEDS
The SPEAKER key is located to the right of the PHONES output volume control knob. This
key is used to select the audio to be applied to the speaker outputs on pins 7 and 8 of audio terminal block
TB1, located on the rear panel, when the ISB (independent sideband) detection mode is selected. Each press
of the key toggles through the available selections of USB (upper sideband), BOTH, and LSB (lower
sideband), lighting the appropriate LED to the left of the key.
When USB is selected, only upper sideband audio is provided at the speaker output. When
BOTH is selected, upper sideband and lower sideband audio are provided at the speaker output. When LSB is
selected, only lower sideband audio is provided at the speaker output. This key has no effect on the speaker
output when any detection mode other than ISB is selected.
The SPEAKER key also controls the audio available at the optional internal speaker when
installed.
3.2.37
THE SPEAKER OUTPUT VOLUME CONTROL KNOB
The SPEAKER output volume control knob is located to the right of the SPEAKER key on
the front panel. This knob is used to increase or decrease the volume level of the audio signal present at the
speaker output on pins 7 an 8 of terminal strip TB1 located on the rear panel. A clockwise rotation increases
the volume of a nominal audio signal, up to approximately 1 watt. A counterclockwise rotation decreases the
volume, down to approximately 0 milliwatts. This control is operational while the receiver is in remote mode.
It also is used to control the volume at the optional internal speaker when installed.
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