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

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LOCAL OPERATION WJ-8711A DIGITAL HF RECEIVER
3-18
If the receiver is actively performing a Channel Scan, pressing the CHANNEL VIEW key
causes "SCANNING XX" to be displayed where "XX" is the current channel to which the receiver is tuned
("XX" continuously changes as the receiver moves from channel to channel). If the receiver is dwelling or if
the PAUSE key is pressed, the display reverts back to the standard channel view format showing the channel
number and the corresponding stored frequency.
When the standard channel view format is displayed and an unterminated numeric entry is not
in progress, pressing the CHANNEL VIEW key causes the next higher channel number and its frequency to be
displayed. Valid channel numbers are from 00 to 99. Pressing the CHANNEL VIEW key while channel 99 is
displayed causes channel 00 to be displayed. This key can also be used as a terminator after entering a
channel number with the numeric entry keys.
3.2.24
THE CHANNEL EXECUTE KEY AND LED
The CHANNEL EXECUTE key is located below the alphanumeric display in the
Memory/Scan section of the front panel. This key can be used to set the receiver to the parameter values
stored in the displayed memory channel. If a memory channel is not visible in the alphanumeric display when
the CHANNEL EXECUTE key is pressed, the Channel View mode is automatically entered, lighting the
CHANNEL VIEW key LED. The receiver parameters stored in the displayed memory channel (including
frequency, IF bandwidth, detection and gain modes, manual gain value, BFO setting, and squelch level) are
immediately executed by the receiver. Because Channel View mode is active when the CHANNEL
EXECUTE key is lit, the Memory/Scan edit knob or the CHANNEL VIEW key can be used to sequence
through the stored memory channels, with the receiver executing each channel as it is displayed. Once
entered, the Channel Execute mode can be exited by either pressing CHANNEL EXECUTE key again, by
entering the Scan mode, or by altering a receiver parameter such that an exact match no longer exists between
the displayed memory channel parameters and the receiver settings.
3.2.25
THE SCAN TYPE KEY AND LEDS
The SCAN TYPE key is located in the Memory/Scan section of the front panel below the
signal strength meter. Directly to the left of the key are three LED's. The LED that is lit indicates the selected
scan type: CHANNEL for channel scan, F1
→
F2 for start frequency to stop frequency scan, and F1
→
F2
w/LOCK for start frequency to stop frequency scan with lockout frequencies bypassed. Each press of the key
changes the scan type. The scan type currently selected, indicated by the lit LED, can be set up with the
SCAN SETUP key (
paragraph 3.2.26 ).
3.2.26
THE SCAN SETUP KEY AND LED
The SCAN SETUP key is located below the alphanumeric display in the Memory/Scan
section of the front panel. This key is used to set up a scan operation for the receiver. When the key is
pressed, its LED lights indicating the scan setup mode is enabled, and the Memory/Scan section's
alphanumeric display shows the first line of the scan setup menu. The scan setup menu displayed is dependent
on the current scan type selected with the SCAN TYPE key, and indicated by the lit scan type LED. Each
press of the SCAN SETUP key causes the next line of the scan type setup menu to be displayed. Pressing the
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