To all
This URL will take you to the schematic of the cable set used with
the Microham Microkeyer
http://www.microham.com/Downloads/DB37-EL-K2.pdf
If you look in the accessories section you can see the schematics of
all the cables
At present the US supplier is back ordered on the K2 cables until Nov
4th. If you wish to roll your own the online store does allow for a
price reduction if you do not order a cable.
I have no connection to Microham
73
Jim
VE3TTN
On Oct 23, 2005, at 14:34, Don Wilhelm wrote:
Stewart and all,
That is precisely why I hesitate to refer to the DE9 connector on
the KIO2
and the KPA100 as an 'RS232' connector.
To those not yet informed, please be aware that connecting a
standard RS232
serial cable to this K2 connector (and the other end to a computer)
will
most certainly do harm to your K2. This connector carries K2 control
signals (non-RS232) as well as the RS232 signals (only TXD and RXD and
Signal Ground are RS232 standard levels). The connector itself
does not
follow the RS232 standard - perhaps it would have been better
implemented as
a DIN connector, but it is too late for that now.
There are only 3 pins (OK, 4 if you include frame ground on pin 1)
that are
RS232 signals. The rest of the pins should not be subjected to the
up-to
plus/minus 25 volts levels that may be present should the other end
of the
cable be connected to a device which presents standard RS232 signals.
For my own K2, I have put a plug into pin 4 and broken off pin 4 of
the
mating cable, so only that special cable can be plugged into the K2 to
prevent an accident that can happen to the best of us.
73,
Don W3FPR
-----Original Message-----
It seems to have the ability to send commands to the K2 via the
serial port.
What I meant to have said, was that Elecraft have some fairly non
standard usage
of the pins on a RS232 D type.
73
Stewart G3RXQ
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