Kenwood TS-480HX, TS-480SAT instruction manual FM Repeater Operation

16 TROUBLESHOOTING

Problem		Probable Cause		Corrective Action	Page
					Ref.
Attempting to	1	The antenna is not connected	1	Check the antenna connection.	2, 4
transmit results in		correctly.		Correct as necessary.
the “HELLO”	2	The impedances of the antenna and	2	Reduce the SWR of the antenna	2, 4
message appearing		transceiver are not properly		system.
and the reception		matched.
mode being	3	The input voltage is outside 13.8 V	3	Correct the input voltage or use a 12 to	2
restored.		DC ±15% (11.7 to 15.8 V DC).		16 V battery.
	4 The current rating of the DC power		4	Use a DC power supply that has a	3
		supply is not enough.		current rating of more than 20.5 A at
				13.8 V DC. As for the TS-480HX,
				2 DC power supplies are required to
				transmit.
The transceiver has	1	The microphone gain is set too low.	1	When in SSB or AM mode, increase	27,
low transmission				the microphone gain.	28
power.	2	Poor antenna system connections	2	Check the antenna connections.	60
		are causing high SWR.		Confirm that the antenna tuner is
				reporting a low SWR.
VOX does not	The VOX gain is set too low.		Increase the VOX gain.		36
operate.
HF/ 50 MHz Linear	1	The linear amplifier control is OFF.	1	Set Menu No. 28 (HF) or	63
amplifier does not				29 (50 MHz) to 1, 2, or 3.
operate.	2	The REMOTE connector wiring is	2	Inspect the REMOTE connector wiring	77
		wrong or faulty.		and correct it as necessary.
The transceiver’s	1	The air filters for the cooling fan(s)	1	Contact a KENWOOD authorized	89
output power		have been congested with dust.		service center to clean the filters.
decreases after a	2	The cooling fan(s) cannot provide	2	Relocate the transceiver so that air can	89
short operating time.		enough air flow to cool the		easily flow through the TX/ RX unit to
		transceiver down.		keep the unit cooled.
You cannot access	1	Many repeaters require a subtone or	1	Review “FM REPEATER OPERATION”	31
and use repeaters.		1750 Hz tone to access.		and select the correct frequency and
				type of subtone.
	2	Transmission and/ or reception	2	You must transmit on the repeater’s	31
		frequency is wrong.		input frequency and receive on the
				repeater’s output frequency. Refer to
				“FM REPEATER OPERATION”.
Digital operation	1	Physical connections between the	1	Re-check all connections using this	77,
results in few or no		transceiver, computer, and TNC/ MCP		manual, your TNC/ MCP manual, and	78
connects or contacts		is incorrect, or software settings in the		your computer hardware manual as
with other stations.		TNC/ MCP are wrong.		references.
	2	Different transmission and reception	2	Confirm that the RIT and XIT functions	35,
		frequencies are being used.		are switched OFF. Confirm that you	37
				are NOT operating split frequency.
	3	The levels between the transceiver	3	Adjust TX and RX levels using Menu	77,
		and the TNC/ MCP are incorrect.		No. 46 and 47, and level controls on	78
				your TNC/ MCP.
	4	Your transmitted signal or the	4	Reorient/ relocate your antenna or	2, 4
		incoming receive signal is too weak.		increase your antenna gain.
	5	The TX delay time parameter in your	5	Set the TNC/ MCP TX delay time to	–
		TNC/ MCP was incorrectly set.		more than 300 ms.
Attempts at	1	Problem with the cable that connects	1	Check the cable and cable	76
controlling the		the PC to the TS-480HX/ SAT.		connections.
transceiver with the	2	Communication parameters set in your	2	Use the same parameters in the	67
computer have		terminal program do not match the		terminal program and the transceiver.
failed.		transceiver parameters.		Check Menu No. 56.

86