WJ-8611 DIGITAL VHF/UHF RECEIVER
LOCAL OPERATION
3-25
3.4.1 CHANNEL MEMORY
The Channel memory provides 200 channels of programmable memory for
storage of complete receiver parameter setups. It is used for channel scan
operations, or the stored data can be retrieved from any individual memory
channel to quickly set the receiver to commonly used frequencies. Each
memory channel stores the following parameter data:
Tuned Frequency
Fixed frequency in the 0 to 1000.00000 MHz range.
Include Status
A flag that determines if that channel is to be
included or skipped during a Channel Scan.
IF Bandwidth
IF bandwidth in the 0.2 to 200 kHz range from the
available bandwidth selection list.
Squelch Level
Squelch in the -29 to -131 dBm range sets the signal
recognition level.
Detection Mode
AM, FM, CW, USB, LSB, ISB.
Gain Control Mode Fast AGC, Slow AGC, Manual Gain.
Attenuation Level
Attenuation in the 0 to 100 dB range, used to set the
Manual gain level.
AFC Status
Sets AFC On or Off when the channel is executed.
BFO Offset
Sets the BFO Offset in the
±
8000 Hz range when the
CW detection mode is programmed.
CHANNEL
PROGRAMMING
Programming of the Channel memory is locally performed by tuning the
receiver to the desired frequency, and selecting the receiver parameters to
optimize the signal response. If the stored parameters are going to be
included in a channel scan, it is important that the squelch level is set
properly to assure that the receiver is able to recognize when an active
signal is present (refer to Squelch Operation in
paragraph 3.3.6
). When
the parameters are properly set, the data is stored in memory by pressing
the STORE key. Parameters can be stored in consecutive memory
channels, or a specific memory channel can be specified prior to pressing
the STORE key. If the STORE key is pressed without specifying a
channel, a memory VIEW menu is displayed in the parameter display,
displaying the next available memory channel, as follows:
i001 VIEW
0020.00000
In the above example, the i001 field is the memory channel number, and
its Include status (i). The 0020.00000 field is the value of the last
frequency stored in the currently displayed memory channel. Pressing the
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Summary of Contents for WJ-8611
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