Timewave DSP-232, Руководство по эксплуатации

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Chapter 5 Packet Operation
With this message, the connected station has the option of waiting for you to “pick up the phone” or to leave a
message in your maildrop.
To enable your
CTEXT
message, turn
CMSG ON
. If you don’t want your DSP to send the message, leave
CMSG
OFF
. Go ahead and connect to yourself again to see what your
CTEXT
message will look like to a connected
station.
When you first turn on your DSP, it becomes a standard AX.25 packet TNC (Terminal Node Controller). All TNCs
and multi-mode controllers have this capability. When you connect to a TNC, in most cases you’ll be connecting
directly to someone’s computer screen. If you get a message like this . . .
Welcome to my packet station. If I don’t respond, please leave a
message and Disconnect.
. . . when you connect to another station, usually you would type something like “Hello?” If you don’t see a
response from the other station in a minute or so, simply leave a message—just like a telephone answering machine.
The TNC at the other station should then hold your message until the operator returns to the computer or terminal.
However, if he should shut off his computer before checking his screen, he’ll never see your message. So if the
other operator doesn’t answer after waiting a reasonable amount of time, try to connect to his mailbox.
Connect/Disconnect Notification (
CBELL
)
If you’re in the ham shack but busy doing other things—or while you’re connected to a station—you may want to
be alerted when someone (else) connects to you. Turning
CBELL ON will make your computer beep three times
when another station connects or disconnects from you.
Setting Up for Transmitting
(If you're using an AEA program, follow the instructions in the program's manual to set up and use packet.)
Most packet operation is on FM simplex so turn off the repeater offset in your radio, if it’s on.
Calling CQ
In order to allow amateurs to send message beacons and to call CQ, the AX.25 protocol has the ability to send
packets that are intended for more than one specific packet station to see. Since all packets must have a destination
“callsign”, the DSP sends Unprotocol packets to the callsign of CQ. This can be changed with the
UNPROTO
command, but most people like this since it makes an easy way to call CQ.
You can call CQ in one of three ways: locally, by digipeating, or through a node.
Locally: Simply enter
K
to enter the Converse mode, press (
RETURN
) twice, the (
CTRL-C
) to return to the
Command mode. Your CQ will look like this to anyone that’s monitoring you:
(
your call)*>CQ:
If you wanted to digipeat your CQ, say through WF7A, you’d enter it thusly:
U CQ V WF7A ( RETURN ) ( RETURN ) ( CTRL-C )
To listeners nearby, they’ll see this on their screens:
(
your call
)
>WF7A*>CQ:
...or if they hear your call directly, it’d be:
( your call ) *>WF7A>CQ:
You can use up to eight calls to send your CQ through a distant station.
To change the UNPROTO command to read something other than CQ, enter:
UNPROTO
(
text
), with ( text ) up to
six characters long.
5-8 September, 05