Timewave PK-232MBX, Руководство по эксплуатации

Страница: 59 / 231

PK-232 MBX – OPERATING MANUAL PACKET-RADIO
4/91 4-24 59
Frequency Too High
o Adjust the PK-232's front panel THRESHOLD control so that the DCD LED lights
when a properly tuned packet is being received. You must also make certain that
the DCD LED goes out when no Packet signals are present on the frequency.
After you have a Packet station tuned in, you should start seeing HF Packet stations
on your display.
4.7.5 Transmitter Adjustments
Make sure your PK-232 is adjusted for your SSB transmitter as described in section 3.5
and 3.5.2 of this manual before transmitting. These are very critical adjustments. If your
PK-232's AFSK level and transmitter microphone gain are not adjusted properly, other sta-
tions will not be able to copy your packets. Check your plate or collector current or the
power output of your rig before going on the air.
4.7.6
Going On The Air
Make sure your transmitter and antenna are tuned and adjusted for the band and operat-
ing frequency you are using.
On HF there are two ways you can go about talking to another station.
o First, you can look at the packets you have just MONITORED (or in your MHEARD
list) and choose one of them to connect to.
o You can also "Call CQ" by entering the CONVERSE mode and pressing the <Enter>
key a few times.
Either way you decide to go on the air, remember that things happen much more slowly
on HF Packet than they do on VHF and UHF Packet. HF Packet requires patience and care-
ful tuning in order to be used successfully.
If you are having problems connecting to other HF Packet stations, try working with an
experienced HF Packet operator in your area and listen to each other's signals. See if you
can copy each other's Packet signals. If he cannot copy your signals, have him listen to
your signal in the CALIBRATE mode to make sure you are transmitting a pure tone. As
mentioned earlier, any distortion caused by overmodulation or RF feedback will make your
signal difficult or impossible to copy.
4.8 Advanced Packet Operation
You PK-232 has many commands and features that are not used for daytoday connects con-
versations. Still, as you become more familiar with Packet, some of these features may be-
come important to you.