RFL 9780 RFL Electronics Inc.
May 19, 2000 9-1 (973) 334-3100
SECTION 9. POWER AMPLIFIER MODULE
Figure 9-1. RFL 9780 Power Amplifier Module
9.1 DESCRIPTION
The RFL 9780 Power Amplifier module provides both voltage and current gain to the signal coming
from the Transmitter module (Section 8). A monitor circuit detects loss of transmit signal and issues a
Transmitter Fail Alarm. The output of the amplifier is transformer isolated and presents a 50 ohm
nominal impedance. The output impedance is adjustable to compensate for small changes in load
impedance.
9.2 SPECIFICATIONS
As of the date this manual was published, the following specifications apply to all RFL 9780 Power
Amplifier modules, except where indicated. Because all RFL products undergo constant refinement and
improvement, these specifications are subject to change without notice.
Input Impedance: 185 Ω typical
Output Ratings:
Power: 10 Watts rms continuous (50 Ω load)
Voltage: 22.36 Volts rms
Current: 447 ma rms
Impedance: 50 Ω
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