Uniden UM-525 - Manual (Page 49)

49
Public Address/Listen Back
Output Power @ Max. Volume
PA1/PA2 Microphone Input 10mV, 1 KHz (4
Ω
)25 watts
PA1 + PA2 Microphone Input 10mV, 1KHz (2
Ω
) 35 watts
Listen Back Sensitivity (Hail 1/Hail 2) 5 mV
WHAM x 4 Base Specifications
Measurement Conditions
Power Source 13.8 VDC
External Antenna Impedance 50
Ω
Test Temperature 25°C±5°C
Reference Audio Output Power 2W (Ext. SP)
Audio Output Impedance 4
Ω
Transmitter Section - WHAM x 4 Base Transmitter
Specification Unit Nominal Limit
RF Power (No Mod) dBm 4 0>
Audio Sensitivity (1KHz -3.1dBm0 Input) dBV -44 -47~-41
Frequency Response 300Hz dB -1 -4~2
3000Hz dB -1 -4~2
Distortion (15KHz LPF) % 3 <5
S/N Ratio (CCITT Filter) dB 55 >40
Deviation KHz 500 399~621
Frequency Tolerance at 25°C PPM -92 <-87
Receiver Section - WHAM x 4 Base Transmitter
Sensitivity 20dB SINAD (CCITT FILTER) dBm -92 <-87
Frequency Response 300Hz dB -1.5 -4.5~1.5
3000Hz dB 0 -3~3
Distortion (1KHz - 3.1 dBm0 Input) % 3 <5
S/N Ratio (CCITT Filter) dB 55 >50
Specifications