Peninsula Engineering Solutions RF-7000E, Operation Manual, Page: 68 / 73

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— Chapter 5. Repeater Tests
RF-7000E Operations Manual
64
Problem Cause Solution
Oscillation or
Radio Errors and
Distortion
Active Alarm
 
Resolve alarm.
Foreground reflections
 
Remove object causing reflection.

Adjust antenna orientation.

Move antenna mounting.
Improper Antenna
Isolation


Clear area around antennas of excessive plant
vegetation growth.

Use High Performance Antennas with better F/B.
Improper Gain Settings
 
Correctly adjust ALC or GAIN.
Repeater Amplifier Power
too high


Adjust the amplifier output power to recommended
levels.

If errors persist, try reducing the power by 1 dB more.
MW Radio terminal power
too high


Check radio transmit power level, adjust to
recommended levels.

If errors persist, try reducing the power by 1 dB more.
Amplifier Replacement
Repeater amplifiers are wideband and cover the full frequency range specified for the repeater,
bandpass filters control the channel assignment. Amplifiers with the same part number can be used
as replacements.
When an amplifier must be replaced, do the following:
a) Unplug amplifier's power connector.
b) Disconnect input and output SMA cables.
c) Disconnect the BNC cable from DC monitor point.
d) Remove mounting hardware (11 screws). Hardware may be Pan Head Philips screws or
Socket Head Cap screws. The socket head cap screw hardware takes a 3/32 or 7/64-inch
Hex Allen Wrench.
e) Remove amplifier.
To install the replacement amplifier:
a) Apply heat sink compound to the mounting surface of the amplifier. Use a very thin layer.
b) Mount the amplifier on the panel, secure with mounting hardware.
c) Connect the BNC cable to DC monitor point.
d) Connect input and output SMA cables. Use care to align the SMA connector. Misaligned
connectors can destroy the center pins.
e) Check all coax connections for tightness (8-inch/lbs)
f) Plug-in the amplifier's power connector.
g) Verify operation by measuring power at SMA power monitor, PWR MON.
h) Set output power by adjusting AGC/ALC per Chapter 5.
i) Confirm the RMAS alarm transmitter PWR alarm clears. Adjust the alarm as required.
ii) Amplifier’s RF Detector DC sensitively and output can vary, thus requiring adjustment.