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INSTALLATION AND OPERATION
WJ-8718-19/FE HF RECEIVER
2.4.6
SECTOR SCAN OPERATION
The MFP sector scan feature allows the operator to establish two scan
sectors.
Memory channels 17 through 29 are reserved for storage of sector scan data.
The tuned frequency data stored in these channels, as shown in Table 2-3, represents
lhfn,Start \nd St°P ^e(3"enciDes <{i to fo) for the two programmable sectors, the
frequency step size (Sector B only), ancT designated lockouf frequencies (four per
sector).
The receiver can be commanded to scan Sector A or Sector B individually
or to scan both sectors. During a Sector A scan the receiver scans from f, to f in
steps equal to one-half of the selected IF bandwidth.
During a Sector B scan 2the
receiver scans from fj to f2 in steps equal to the tuned frequency data stored in
memory channel 21.
Table 2-3. Sector Scan Frequency Data Storage
Channel Number
17
18
19
20
21
22 thru 25
26 thru 29
Frequency Data
^1 - Sector A
^2 - Sector A
*l - Sector B
f2 - Sector B
Frequency Step Size - Sector B
Lockout Frequencies - Sector A
Lockout Frequencies - Sector B
2.4.6.1
Sector Scan Frequency Data
The RF tuned frequency data stored in channel 17 represents the start
frequency (f ) 0f the first sector (Sector A). The RF tuned frequency data stored in
channel 18 represents the stop frequency (f ) of sector A. During a Sector Ascan
the receiver scans between U and f,. The2 frequency step size during a Sector A
scan is equal to one-half the selected IF bandwidth.
*«*.«" n
The RF tuned frequency data stored in channel 19 represents the start
frequency (f,) 0f the second sector (Sector B). The RF tuned frequency data stored
in channel 20 represents the stop frequency (f„) 0f Sector B. During a Sector Bscan
^the receiver scans between fj and f«. The frequency step size during a Sector B
ican will be equal to the RF tuned frequency stored in channel 21.
If an RF tuned
frequency of 00.00000 MHz is stored in channel 21 the step size will be equal to one-
half the selected IF bandwidth.
2-26
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