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Figure 1-2. Express Orderwire Multidirection Unit, Showing Mounting of Printed Wiring Boards
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TM-11-5805-451-15 Philco Express Orderwire Multidirection Hut Manual
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TABLE 1-1. TECHNICAL CHARACTERISTICS (CONT)
TM 11-5805-451-15
1.4 TECHNICAL CHARACTERISTICS
Table 1-1 lists the technical characteristics of the Express Orderwire Multi-
direction Unit.
TECHNICAL CHARACTERISTICS
Environmental
Operating Temperature . . . . . . . . . . . . . . . . .
0 to 55C
Relative Humidity . . . . . . . . . . . . . . . . . . . . .
30 to 95%
Altitude
Storage . . . . . . . . . . . . . . . . . . . . . . . . . .
30,000 ft
Operating . . . . . . . . . . . . . . . . . . . . . . . . .
5,000 ft
Power Source . . . . . . . . . . . . . . . . . . . . . . . . . .
48 Vdc 10%, 2 mV ripple
Power Consumption . . . . . . . . . . . . . . . . . . . . . .
44 mA per voice-frequency
amplifier board
Printed Wiring Board Characteristics
Voice-Frequency Amplifier Board (368-91965)
Quantity. . . . . . . . . . . . . . . . . . . . . . . . . .
4, max
Circuits. . . . . . . . . . . . . . . . . . . . . . . . . .
2 per board
Input and Output Impedance . . . . . . . . . . . . .
600 ohms &lo%, balanced
Input Signal Level . . . . . . . . . . . . . . . . . . .
-40 to -0 dBm
Output Signal Level . . . . . . . . . . . . . . . . . .
+10 dBm, max
Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . .
0 to 30 dB, continuously
adjustable within 0.5 dB
Crosstalk . . . . . . . . . . . . . . . . . . . . . . . . .
-70 dB, max
Signal-to-Noise . . . . . . . . . . . . . . . . . . . . .
70 dB below maximum
output level

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