Timewave PK-232SC, Руководство по установке оборудования

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DTR PTT option for the PK-232SC
Addendum 1
Some transceivers do not have a software PTT command in their rig control command sets. The
only way to put such radios into the transmit mode in to use an electrical signal or the built-in
transceiver VOX to key the transmitter. The built-in transceiver VOX may not work with data
audio driving the accessory inputs on the back panels of some radios. Other options for PTT
include an external VOX circuit, a manual switch, a foot switch, a data-controller with a terminal
program such as the PK-232 or a software-derived signal such as DTR from a serial port on a PC.
Each of these options has its own requirements. Manual switching is generally inconvenient and
most hams choose not to use it. There are a limited number of choices of external VOX circuits
and most do not have any rig control capability. Many sound-card programs use the DTR as
their only method of keying the PTT on a transceiver. Modern computers do not have serial
ports as a standard feature. The PK-232SC now has three options for PTT:
1. The PTT output on the PK-232 Radio ports works for all the built-in PK-232 radio modes
(RTTY, Pactor, CW, packet, etc.) Programs such as Radio Operations Center
automatically use this PTT method with all their PK-232 modes. This is an accurate,
precisely-timed PTT circuit. ModemSwitch is a free utility application from Timewave
that can do PTT switching by clicking buttons on the display screen with a mouse.
2. Ham Radio Deluxe (HRD) and Radio Operations Center (ROC) programs can synchronize
so all the soundcard modes in HRD can key the PTT output of the PK-232. No additional
cables or wiring are required for this method.
3. The PK-232SC now has the capability of directly keying the PTT output on the PK-232SC
from the DTR control output of the rig control serial port in the PK-232SC. There is an
optional connection in the PK-232Sc that enables the DTR PTT switching. You do not
need this optional connection if you are not using the DTR PTT switching option! Please
see the attached pictures to see this connection. Newer PK-232SC models only require
connecting the plug to the two pins on J8 of the SC board to enable it. Simply remove
the top cover and connect the plug on the orange wire to the pins 5 & 6 on J8. The
cable should be oriented to the left and pin 5 should be connected to the orange wire.
The wire is already in place and the opposite end of the cable is already connected to
JP3 on the main PK-232 Board. Older models of the PK-232SC do not have this wire but
it can be easily added to all PK2-32SCs. Please contact Timewave if you need this
connection. If you are using the rig control port, you will need a software program
known as a “serial port splitter”. Normally a single serial port (COM) can only be
addressed from one application in a program or from one program. A port splitter
permits one application to address a serial port control output such as DTR and another
application to address the RXD/TXD and other I/O on the serial port. The program called
“VSPE” from www.Eterlogic.com is one example of a serial port splitter that we have
used successfully. Be certain you do not try to operate the DTR pin from both the rig