Realistic TRC-449 Service Manual page 5

UNITS
NOMINAL LIMIT
Battery Drain at No Signal
:AM mA
550 1000
5SB mA
550 1000
Battery Drain at Maximum Output Power :AM
mA
1500 2000
SSB
mA
1500 2000
PUBLIC ADDRESS:
Microphone Sensitivity for
3W Output Power at 1 kHz mV 1
3
Maximum Output Power
W
4
3
TRANS M ITTER:
Frequency Tolerance at 25°C (5 Minutes
after switch on)
:AM %
±0.0005
±0.003
SSB %
±0.0005
±0.003
Carrier Power at No Modulation
:AM W
3.8 4.0
PEP Power, Two Tone : SSB W PEP
12 12.0
Modulation Distortion at 1 kHz, 80% Modulation :AM %
3 10
Spurious Harmonic Emission
:AM
dB
-65
-60
SSB dB
-65 -60
Carrier Suppression
: 5SB
dB
-55
-40
Unwanted Sideband Suppression at 25 kHz : SSB dB
-55
-40
Modulation Frequency Response
(1 kHz, 0 dB reference)
Lower at 450 Hz, E I A
:AM dB -6
-10
SSB dB
-6
-14
Upper at 2.5 kHz, EIA
:AM dB
-6 -10
5SB dB
-6
-10
Carrier Power Uniformity,
Ch to Ch at No Modu lation :AM W
0.3 0.4
Mic Input Level Uniformity, Ch to Ch for 4 watts
Output .25 kHz Single tone - SSB
dB
2
3
Mic I nput Level Uniformity, LSB to USB for
4 watts Output, 1.5 kHz Single Tone
dB
3
Microphone Sensitivity
AM: For 50% Modulation :AM mV
1.0 2.0
SSB: For 4 watts PEP : SSB mV
1.0 2.0
AMC Range
AM:
50 -- 100% Modulation
:AM
dB
46 40
SSB:
10 -- 13.2 watts PEP 5SB dB
46
40
Battery Drain at No Modulation :AM mA
2200 2600
SSB mA
1000 1500
Battery Drain
AM:
80% Modu lation :AM mA
2600 3000
SSB: 10 watts PEP, Two tone
SSB
mA 2000 2700
Note;
Nominal Specs represent the 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.
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