Realistic trc-448 Service Manual page 4

DESCRIPTION
CONDITION NOMINAL
LIMIT
RF Gain Control Range at Max.
Sensitivity Level
S/N Ratio
Squelch Sensitivity at Threshold
Squelch Sensitivity at Tight
Skirt Rejection (±20 kHz)
5 Meter Sensitivity at "S-9"
(No Modulation AM)
Image Rejection Ratio
fo + (2 x 7.8 MHz)
1/2 IF Rejection Ratio
fo + 7.8 MHz/2
IF Rejection Ratio 7.8 MHz
Oscillator Drop-out Voltage
Current Drain at No Signal
Current Drain at Maximum
Clarifier Range
Spurious Rejection Ratio
Within Band
Outside of Band
AM
SSB
AM
Input 1 mV
SSB
AM
SSB
AM
SSB
AM
AM
SSB
AM
SSB
AM
SSB
AM
SSB
AM
SSB
AM
SSB
AM
SSB
AM
SSB
AM
SSB
AM
SSB
40 dB
40 dB
40 dB
40 dB
0.5 µV
0.5µV
1000 ptV
1000 /../V
80 dB
100µV
100 ptV
80 dB
80 dB
90 dB
90 dB
90 dB
90 dB
7 V
7V
550 mA
550 mA
1000 mA
1000 mA
±1 kHz
±1 kHz
65 dB
65 dB
60 dB
60 dB
30 — 50 dB
30 — 50 dB
35 dB
35 dB
1 /./V
1µV
500 — 2000 µV
500 — 2000 µV
70 dB
50 — 200 µV
50 — 200 µV
65 dB
65 dB
80 dB
80 dB
75 dB
75 dB
10 V
1 0
V
1000 mA
1000 mA
1500 mA
1500 mA
±0.6 — ±2.5 kHz
±0.6 — ±2.5 kHz
56 dB
56 dB
50 dB
50 dB
PUBLIC ADDRESS
.
Microphone Sensitivity
Output Power
Current Drain
3 W Output 1 kHz
10% Distortion
No Signal
Max. Output Power
1 mV
3.5 W
500 mA
1000 mA
2 mV
3 W
1000 mA
1500 mA
GENERAL
Frequency Range
Channel
Frequency Control
Operating Temperature
Humidity
Microphone
Operating Voltage
Power Consumption
Meter
Size
29.965 to 27.405 MHz
40 Channels
Crystal Control (PLL System)
—10°C to 50°C
10 to 95%
Dynamic Type with PTT Switch
13.8 V DC Nominal (12.0 — 15.0 Volt DC)
Pos./Neg. Ground 40 Watts
TX Power and Signal Strength
205(W)
x 60(H) x 260(D) mm (8-1/4" x 2-1/2" x 10-1/2")
NOTE:
Nominal Specs represent &kr design specs: all units should be able to approximate these — some will exceed and
some may drop slightly below these specs. Limit Specs represent the absolute worst condition which still might
be considered acceptable; in no case should a unit perform to less than within any Limit Spec.