Specifications

Serial interface using a reed relay
Serial interface using a transistor (positive keying - not isolated)
On a DB25 serial port connector, pin 20 is DTR, pin 4 is RTS, and Signal Gnd is pin 7.
On a DB9 serial port connector, pin 4 is DTR, pin 7 is RTS, and Signal Gnd is pin 5.
A.3) PTT Switching
If the CW Port is not the Transceiver Port, TRX-Manager also puts a PTT signal on the unused
line of the CW port (not related with PTT switching which is always on TRX port). I.E : You
key the RTS line : a PTT signal is available on DTR line for PTT switching.
A more sophisticated PTT switching via the normal TRX-Manager's PTT Lineis also available by
using the Auto TX feature.
A.4) PARALLEL PORT
How to choose the parallel port
The CW interface keys the Select line of a parallel port. You must choose a free LPT port
because the CW Interface can not be used with any other device (i.e. a printer, rotor...).
However, it is compatible with the band decoder of TRX-Manager.
The program keys the Select line (Pin 17) while state of Strobe (Pin 1) is low. The CW
interface is compatible with the interfaces of the other popular programs :
Parallel interface (positive keying - not isolated)
A.5) System priority
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