Chapter 5 Packet Operation
The DSP will respond:
HBAUD was 9600
HBAUD now 1200
You have got a feel for how to switch ports and modems. If you have followed along, your DSP is now configured
for 1200 bps Packet using Port 1. The thing to remember is that there are two Radio Ports on the DSP-232 and one
MODEM and HBAUD setting. So, even though you switch from Radio Port 1 to Radio Port 2, your MODEM and
HBAUD stay the same.
If you know the VHF activity in your area uses a modem from the list above other than the Bell 202 default, you
may enter this modem number in the command QVPACKET. The modem in QVPACKET is automatically selected
when the VHF parameter is ON and the Packet mode is entered.
If you know there is packet activity in your area, but don’t know the frequencies, try some of these:
2 meter (144-148 MHz) band:
144.91, 144.93, 144.95, 144.97, 144.99, 145.01, 145.03, 145.05, 145.07,
145.09.
1.25 meter (222-225 MHz) band:
223.40, 223.42, 223.44, 223.46, 223.48
70 cm (420-440 MHz) band:
440.975, 441.000, 441.050, 441.025, 441.075
You’ll know you’ve found a packet channel when you hear the characteristic “
braaaaaap
” of packet transmissions.
High speed packet, such as 9600 bps, may sound like “white noise.” When you’re properly tuned to a packet signal,
the LEDs in the DSP’s tuning indicator spread out evenly from the center to both the left and right sides.
Once you’ve found an active packet channel, make sure you have the volume control in your transceiver adjusted
correctly so the DCD light on the DSP’s front panel glows
when a packet is received
. If DCD doesn’t light, you
must increase the audio level from your transceiver.
Conversely, make sure that the DCD light goes out when there
aren’t
any packet signals present on the channel. If it
doesn’t extinguish when the channel is clear, make sure the Squelch control on your transceiver is set high enough
to silence the speaker when no signals are present. If the DCD light stays on when the packet channel is quiet, your
DSP will think that a signal is present and won’t ever key up.
If everything is set properly, packets should scroll up on your screen. Some typical packets you might monitor are
shown below:
N7ALW*>WA7GCI [C]
WA7GCI*>N7ALW
(
UA
)
N7ALW*>WA7GCI:
Hi Bob, how are you this evening?
K6RFK>N7ALW*>N7GMF:
Goodnight John, its been nice talking to you.
K6RFK>N7ALW*>N7GMF [D]
N7GMF>N7ALW*>K6RFK
(
UA
)
KD7NM*>MAIL:
Mail for: K6RFK N7ML WO6P
WN7ANK-8*>ID:
NET/ROM 1.3
(
SEA
)
SEA*>N7ML:
SEA:N7HWD-8> Connected to #SEA:N7HWD-7
5-4
September, 05
Содержание DSP-232
Страница 120: ...Chapter 6 GPS Applications September 05 6 1...
Страница 138: ...Chapter 7 Maildrop Operation 7 18 September 05...
Страница 158: ......
Страница 159: ...Chapter 8 ASCII and Baudot Operation September 05 8 1...
Страница 185: ......
Страница 186: ...Chapter 9 AMTOR Operation September 05 9 1...
Страница 198: ......
Страница 199: ...Chapter 10 Morse Operation September 05 10 1...
Страница 207: ......
Страница 208: ...Chapter 11 SIAM and NAVTEX Operation September 05 11 1...
Страница 230: ......
Страница 231: ...Chapter 12 PACTOR Operation September 05 12 1...
Страница 240: ...Chapter 13 Troubleshooting September 05 13 9...
Страница 254: ...Chapter 13 Troubleshooting 13 9...
Страница 256: ...DSP 232 Manual Addendum September 05 AD 2...
Страница 259: ...Appendix A Radio Connections Radio Connection Diagrams September 05 A 3...
Страница 260: ...Appendix A Radio Connections A 4 September 05...
Страница 261: ...Appendix A Radio Connections September 05 A 5...
Страница 262: ...Appendix A Radio Connections A 6 September 05...
Страница 263: ...Appendix A Radio Connections September 05 A 7...
Страница 267: ...Appendix D Mailbox Upgrade September 05 D 2...
Страница 268: ...Appendix E Schematics and Pictorial September 05 E 3...