Try these hidden Uniden tricks
Undocumented Features
Hold down the following keys while turning radio on
WX & L/O = shows battery voltage (1.72 while charging, 1.66 with full battery, 1.45 needs recharging )
2, 9 & MAN = clears all memories
2, 9 & L/O = illumination diagnosis
2, 9 & PRI = puts test freqs in channels 1 - 21
2, 9 & SCAN = more test freqs