Specifications

Now you want to let WX7EEE on VHF know that you are there, but that
you are involved in another QSO on HF. This way he will understand
that it may take you a little longer to respond to his packets.
Before you can send data to Radio Port 2, you must enter Converse Mode
with the "k" command and then switch to this Port with "|A" or the
text you type will be sent to Radio Port 1 on RTTY the next time you
enter the transmit command "x".
You receive a transmission from Jim on HF RTTY telling you he needs to
sign off to go to bed. The "0:" in front of the text shows this was
received on Radio Port 1.
Now you want to sign off with Jim on HF. Again, first you must switch
to Radio Port 1 with the "|0" since your last transmission was
directed to Port 2. After this you must enter the command mode of the
PK-900 by sending a <CTRL-C> and then place Port 1 into RTTY
transmit with the "x" command. Now you can make your final
transmission to Jim ending with his callsign followed by your
callsign. As before, when you are through typing your text, you send
a <CTRL-D> to the PK-900 which returns Radio Port 1 to receive after
the text has been sent.
6.7.4 More Thoughts on Port Switching
One problem of having more than one Radio Port is remembering which
port you are currently using. In the dual port sample QSOs above,
this was not a problem, but after it has been hours or days since you
have used your PK-900, you may forget which port you last used.
With AEA Pakratt Software programs, the on-screen status will always
show which port you are using so this is not a problem. With other
programs, you will have to query the PK-900 with the CSTATUS SHORT
command. The CSTATUS command displays the status of the logical
channels of Port 1 and Port 2 of the PK-900. The CSTATUS SHORT
command displays the status of the active channel and any packet
channels that are connected. After completing the sample QSOs above,
the PK-900 would display the following.
cmd:CSTATUS S
Ch. A - IO DISCONNECTED
This reminds you that Channel A is your current I/O channel. Any text
that you type in the Converse mode will be sent to channel A on Radio
Port 2. If you had been connected to any other packet stations, the
callsign and channel would have also shown in the display.
Sometimes you might not want to be bothered with anything from the
Radio Port you are not using. For these times either Radio Port may
be turned OFF with the RADIO command. For example, let's say that in
the above example QSO you wanted to work HF packet and did not want to
be interrupted with any VHF connects. Typing the following command
would cause Radio Port 2 to be disabled.
cmd:RADIO /0 or RADIO /OFF
RAdio was 1/2
RAdio now 1/0
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