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Important Note: To alter the Squelch threshold (or any other Aux Parameter settings)
during a scan, you must first disengage the PScan function. Press the PScan button once
to disengage.
4-37 FREQUENCY LOCKOUTS: Frequency Lockouts are used to eliminate
unwanted interference that would otherwise disrupt a continuous F1-to-F2 PScan search.
Unlike a channel lockout, the Frequency Lockout has a Central Frequency plus a
Bandwidth Attribute. The Bandwidth Attribute allows the scan to circumvent the
signal's modulation and heterodyne products, ensuring a consistent lockout when those
products span more than one scan- fling step. When initiating a new PScan set-up, it's
usually advisable to clear all previous lockouts from memory (See section 4-34).
1. Clearing Frequency Lockouts: To clear existing lockouts, press Setup, PScan, and
Lockout in sequence. The Setup and PScan buttons will illuminate, and the Edit Knob
will be assigned to the lockout menu. Additionally, the first entry in the lockout menu
will appear in the Memory/Scan display, showing both the Bandwidth Attribute and the
Lockout Center (example, 2800 Hz Attribute at 12.6 MHz Center):
To delete the displayed lockout, press Lockout a second time. The message 'Lockout
Deleted' will appear while the button is depressed, and the next lockout menu entry will
be appear when the button is released:
To delete the next entry, press Lockout once again. You may continue this procedure
until all existing lockouts have been canceled. Alternatively, you may delete selected
lockouts by scrolling though the lockout menu with the Edit Knob and pressing Lockout
on only those entries you wish to delete. At the end of the menu, the display will flash
'End of List', then revert back to the last entry:
When all entries have been removed from the menu, pressing Lockout will cause the
display to flash 'No Lockouts to delete'. The display will then revert to the PScan set-up
menu:
4-24
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