|
|
| 7 SPECIALIZED COMMUNICATING | |||||
AMTOR/ PACKET/ PACTOR/ | 6 Exit the calibrate mode. |
| ||||||
Due to their |
| • “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 |
|
|
|
| ||||
| • 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. |
| |||||
| 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 | |||||||
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, | |
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. |
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
27