Kenwood TS-570D instruction manual Amtor/ Packet/ Pactor/ G-Tortm/Clover

			7 SPECIALIZED COMMUNICATING
AMTOR/ PACKET/ PACTOR/ G-TORTM/ CLOVER		6 Exit the calibrate mode.
Due to their error-handling capability and speed of			• “TX” disappears and “RX” appears.
transmission, these modes are more efficient than		7 Use Menu No. 34 to select the appropriate AF output
earlier forms of digital communication by machine. In
			level.
the case of G-TORTM, it was developed specifically to
			• The AF control cannot be used for this
handle the adverse conditions of communicating across
the solar system with spacecraft during their missions.			adjustment.
		8 Send commands and data.
Mode	Meaning
			• The transceiver will briefly transmit each time it
			sends your commands and data, or when it
AMTOR	AMateur Teleprinting Over Radio
			acknowledges transmissions from other stations.
Packet	Packetized data used per AX.25 protocol	The data rates and types of modulation used for HF
PacTOR	Packet Teleprinting Over Radio	Packet operation are shown below.
G-TORTM	Golay-coded Teleprinting Over Radio		Mode	Data Rate	Modulation Type
Clover	Characteristic shape of an accurately
	tuned signal as viewed on a monitor.		USB & LSB	300 bps	F1
				(AFSK)
On most HF bands, audio frequency shift keying			USB & LSB	1200 bps	F1
(AFSK) is used. This method of modulation uses audio				(PSK)
tones therefore either the LSB or USB mode should be			FM	1200 bps	F2
selected. Traditionally, LSB is used similar to RTTY with
				(AFSK)
the exception of AMTOR which is normally operated
using USB.		Note: In some countries, F2 modulation at 1200 bps may be used
In some countries, the licensing authorities permit F2		on the 10-meter band. Consult your national Amateur radio
		organization to obtain band plans that specify where in each band
operation on some frequencies in the 10 meter band.		various modes are used.
For this type of operation, select the FM mode.			PACKET FREQUENCIES
Consult “MCP AND TNC” {page 62} under
			IARU Region 1		U.S.A./Canada
“CONNECTING PERIPHERAL EQUIPMENT” if you			(Europe/Africa)
need installation information.			Frequency (kHz)		Frequency (kHz)
Note:			—		1800~1830
◆ For digital operation using the SSB or FM mode, switch the
			3590~3600
Speech Processor OFF. When using the SSB mode, also select					3620~3635
a fast AGC setting.
			Digital band		7080~7100
◆ When selecting one of the filters (not OFF) in Menu No. 32, do
not activate the RX Equalizer via Menu No. 50; the default for
			Digital band		10140~10150
Menu No. 50 is OFF.
◆ Set Menu No. 32 to OFF for voice operation since the filters
			14089~14099, 14101~14112		14095~14099.5
available are too narrow for voice.
1 Select the appropriate filter bandwidth via Menu			Digital band		18105~18110
No. 32.			21100~21120		21090~21100
• The default is OFF.
			Digital band		—
2 Select the operating frequency.
			28120~28150, 29200~29300		28120~28189
3 Press [LSB/USB] to select LSB or USB.
			—		50600~50780
• For F2 operation, select FM by pressing
[FM/AM].		AMTOR activity can be found on or near 14075 and
• If you selected one of the filters in step 1 (not		3637.5 kHz. These would also be good starting places

OFF), “FSK” appears with “LSB”, “USB”, or “FM”.	when searching for PacTOR, G-TORTM, or Clover
	stations.
4 Following the instructions provided with your TNC or
MCP, enter the calibrate mode so you can generate
a mark condition.
• “RX” disappears and “TX” appears.
5 Use Menu No. 33 to select the appropriate AF input
level.
• Select a low input level so long as the ALC meter
reflects.

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