L/O - appears when you manually select a channel you locked out or a skip frequency.

- appears when you lock the keypad.

- alerts you when the battery power gets low.

PGM - appears while you store a frequency into a channel.

or - appears during search mode.

- appears only when the function mode is on.

WX, POL FIRE, AIR, MRN, or HAM - appears along with an indicator that shows the current service bank during a service search.

ALT - appears during a WX alert or while the signal stalker function is on.

- appears when the scanner is set to a signal stalker mode.

23

The Basics

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Image 23
Radio Shack 20-501 manual Basics