Uniden UM425 Owner's Manual page 60

Specifications
Receiver
Frequency Range
Sensitivity
Circuit
Squelch Sensitivity
Spurious Response
Adjacent Channel Selectivity
Audio Output Power
Power Requirement
IF Frequencies
156 to 158 MHz
0.25 μV for 12 dB SINAD
Dual Conversion Super Heterodyne PLL (Crystal for DSC)
0.2 μV Threshold
75 dB
78 dB @ ±25 kHz
2.5 watts (10% Distortion, 8 Ω load)
340 mA @ 13.8V DC at squelched, 860 mA @ 13.8V DC
at maximum audio output
1st 41.925 MHz, 2nd 455 kHz (1st 21.7 MHz, 2nd 455 kHz
for DSC)
E-56