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