PRESIDENT uniden BENJAMIN UT-552B, Service Manual, Page: 6 / 77

SSB : 9-13.2 Wpep
SSB
dB 50
40
11. Hum and Noise in Transmit
AM : 50 % Mod.
AM dB 50
40
FM : For ± 1 . 5 kHz Dev. FM dB 40 30
12. Maximum Deviation
FM kHz 2.7 3.5
RECEIVER
ITEMS MODE UNIT NOMINAL
LIMIT
1. Max Sensitivity
AM pv 0.50 1.5
SSB pv 0.25 0.50
2. Sensitivity
AM : For 10 dB S/N AM
pv 1
2
FM : For 20 dB S/N FM
pv
1 2
SSB : For 10 dB S/N SSB pv 0.25 0.50
3. AGC Figure of Merit 50 mV for
10 dB change in Audio Output
AM dB 90 70
SSB
dB
90 70
4. Overall Audio Fidelity
(6 dB down, 1 kHz ref.)
Upper Frequency AM Hz 2.000
1.500 ~ 3.000
FM Hz 2.500
1.500 - 4.000
SSB Hz 2.500
1.500 - 4.000
Lower Frequency
AM
Hz
250 200 ~ 500
FM Hz 250
100 ~ 500
SSB Hz
250 200 ~ 500
5. Distortion
AM % 2 7
FM % 2 7
SSB
%
2 7
6. S/N Ratio at 1 mV Input
AM dB 35
25
FM dB
40 30
SSB
dB 40 30
7. Squelch Sensitivity at
AM pv 1
2
Threshold
FM
W
1
2
SSB pv
1
2
8. Squelch Sensitivity at Tight
AM pv
1.000
250 - 4.000