LOCAL OPERATION
WJ-8711A DIGITAL HF RECEIVER
3-30
•
FM Detection Mode. In this mode, the audio present at the front panel
PHONES jack and the LINE A, LINE B, SPEAKER, and DC AUDIO
terminals of TB1 on the rear panel is provided by the unit's FM detector.
•
CW Detection Mode. In this mode, the audio present at the front panel
PHONES jack and the LINE A, LINE B, SPEAKER, and DC AUDIO
terminals of TB1 on the rear panel is provided by the unit's CW product
detector. In this mode, BFO and passband tuning operations can be used.
•
LSB Detection Mode. In this detection mode, only IF bandwidths from 900
Hz to 3.2 kHz are selectable. Upper sideband audio is provided at the front
panel PHONES jack and the LINE A, LINE B, SPEAKER, and DC AUDIO
terminals of TB1 on the rear panel. The BFO frequency cannot be altered or
displayed in this mode.
•
USB Detection Mode. Except for the sideband selected, this mode is
functionally identical to the LSB detection mode.
•
ISB Detection Mode. In this detection mode, only IF bandwidths from 1.8
kHz to 3.2 kHz are selectable. Both upper and lower sidebands are separately
and simultaneously demodulated. LSB audio is provided on the left channel
of the PHONES jack while USB audio is provided on the right channel. USB
audio is provided on the LINE A terminal of TB1 while LSB audio is
provided on the LINE B terminals. The audio available at the SPEAKER
terminals of TB1 is dependent on the setting of the front panel SPEAKER
switch. When BOTH is selected, LSB and USB audio is combined and
provided at the output. When LSB or USB are selected only the respective
audio is provided at the output.
The detection mode is selected with the DET MODE key located in the Auxiliary Parameter
section of the front panel. The currently selected detection mode is displayed in the lower auxiliary parameter
display, directly above the DET MODE key.
To select a different detection mode, press the DET MODE key so that its LED becomes lit.
Then use either the Auxiliary Parameter edit knob or continue pressing the DET MODE key until the desired
detection mode is displayed.
3.5.3
SELECTING AN IF BANDWIDTH
Sixty-six (66) intermediate frequency (IF) bandwidths are available for selection (see
Table 1-1
for a list of available IF bandwidths). The IF bandwidth is selected with the IF BW key located in
the Auxiliary Parameter section of the front panel. The currently selected IF bandwidth is displayed in the
lower auxiliary parameter display, directly above the IF BW key.
To select a different IF bandwidth, press the IF BW key so that its LED becomes lit. Then use
either the auxiliary parameter edit knob or continue pressing the IF BW key until the desired IF bandwidth is
displayed. Only those bandwidths that are set to "include" using the IF Bandwidth Select mode (see
paragraph 3.5.3.1
) will be available for selection.
Courtesy of http://BlackRadios.terryo.org
Summary of Contents for WJ-8711A
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