These parallel port CW keying interfaces are made by Jack Schuster W1WEF.
They are built directly into a DB-25 connector shell, making for a very
neat and compact package. These keying interfaces will also work with
CT, NA, DX4WIN, CW Type, and other Amateur Radio programs (pinout details.).
The Model 1 interface is CW only.
$23 + $3 shipping.
The Model 2 interface has CW and PTT outputs.
$39 + $3 shipping.
The Model 3 interface has CW, PTT, and paddle support.
$49 + $3 shipping.
The Model 5 interface has CW, PTT, paddle, and footswitch support.
$59 + $3 shipping.
Click on any of these photos to see larger images.
Four models are available to key any solid state radio. (Interfaces for
tube type radios are also available - please
inquire.) These interfaces plug into your computer's 25-pin parallel
port, and connect to your rig's CW key jack with a simple cable (provided
by the user.) You can connect an external CW keyer in parallel with this
interface if you wish. Radio Shack
sells cables and "Y" adapters.
Models 2, 3, and 5 include PTT support. This ensures that your rig and
amplifier are switched into transmit before the computer starts sending
code. This not only prevents the possibility of cutting off the beginning of
the first character, but insures against hot switching the amplifier. One
cable is run to your key jack, as above, and another to the PTT line on your
Models 3 and 5 includes PADDLE support in addition to the other features.
You can plug your iambic paddles directly into the computer interface,
eliminating the need for a separate keyer. TR LOG
was the first contest logging software to support thisfeature.
Model 5 includes FOOTSWITCH support in addition to the other features.
With TR LOG, a footswitch
can perform many tasks, such as swapping radios for two radio contesting,
perform a dupe check, start sending a reply before you've completely typed in
a callsign, navigate the bandmap, and more. Learn more about
TR LOG's advanced
Because certain flavors of the
Microsoft Windows operating systems do not allow real-time DOS software
direct access to serial or parallel port hardware, these CW interfaces
may not work properly with those operating systems. If you are using Windows
NT, Windows 2000, or Windows XP, you may experience choppy or inconsistent
CW sending, as the operating system preempts or interrupts the contest
logging software to perform other tasks. One possible work-around
may be Direct I/O. This software
is not associated with TR LOG,
and may or may not meet your needs.