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67
16 MAINTENANCE
Attempting to
transmit results in the
“HELLO” message
appearing and the
receive mode being
restored.
The transceiver has
low transmit power.
VOX does not
operate.
Linear amplifier does
not operate.
You cannot access
and use 10meter
band repeaters.
Digital operation
results in few or no
connects or contacts
with other stations.
Attempts at
controlling the
transceiver by
computer have failed.
1
1
2
2
15
1
17
18
61
24
24
62
23,30,
32
18
60
51
1 Check the antenna connection.
Correct as necessary.
2 Reduce the SWR of the antenna
system.
3 Correct the input voltage or use a
12 to 16 V battery.
4 Use the provided or an optional DC
power cable.
1 When in SSB or AM mode,
increase the microphone gain.
2 Check antenna connections.
Confirm that the antenna tuner is
reporting a low SWR.
Increase the gain via Menu No. 16.
1 Change Menu No. 39 to ON.
2 Inspect the REMOTE connector
wiring and correct as necessary.
1 Review “FM REPEATER
OPERATION” and select the
correct frequency and type of
subtone.
2 You must transmit on the
repeater’s input frequency and
receive on the repeater’s output
frequency. Refer to “FM
REPEATER OPERATION”.
1 Re-check all connections using this
manual, your TNC/MCP manual,
and your computer hardware
manual as references.
2 Confirm that the RIT and XIT
functions are switched OFF.
Confirm that you are NOT
operating split frequency.
3 Adjust TX and RX levels using
Menu Nos. 33 and 34, and level
controls on your TNC/MCP.
4 Reorient/relocate your antenna or
increase your antenna gain.
5 Set the TNC/MCP TX delay time to
more than 300ms.
1 Check the cable and cable
connections.
2 Use the same parameters in the
terminal program and the
transceiver. Refer to
“COMMUNICATION
PARAMETERS”.
3 Disconnect the computer from the
transceiver, and run a utility
program to test the computer serial
port.
1 The antenna was not connected
correctly.
2 The impedances of the antenna
and transceiver are not properly
matched.
3 The input voltage is outside 13.8 V
DC ±15% (11.7 to 15.8 V DC).
4 An inappropriate DC power cable is
being used.
1 The microphone gain was set too
low.
2 Poor antenna system connections
are causing high SWR.
The VOX gain was set too low.
1 The linear amplifier control relay is
OFF.
2 The REMOTE connector wiring is
wrong or faulty.
1 The repeater requires a subtone
frequency for access.
2 You are not operating split
frequency.
1 Physical connections between the
transceiver, computer, and TNC or
MCP are incorrect, or software
settings in the TNC or MCP are
wrong.
2 Different transmit and receive
frequencies are being used.
3 The levels between the transceiver
and the TNC/MCP are incorrect.
4 Your transmitted signal or the
incoming receive signal is too
weak.
5 The TX delay time parameter in
your TNC/MCP was incorrectly set.
1 Problem with the RS-232C cable
that connects the computer to the
transceiver.
2 Communication parameters set in
your terminal program do not match
transceiver parameters.
3 The serial port on your computer is
not functioning correctly.
73


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