Don and all, Thanks for your replies. I have read all the tales of distress and solutions to the mix of RS232 and non-RS232 re the K2 interface. Don't want to go there.
The standard MicroKeyer to K2 lead set as far as I can tell seems to have a RS232 D type connector presumably male to go directly into a K2. My system has the link cable between the K2 and a separate KPA100 & KAT100. As the PC end of that cable is female I think that the MicroKeyer male connector should mate with that. MicroHam say look at the diagrams and modify the cable to suit. They only use TX, RX and ground pins. I was really hoping for someone who was using the MicroKeyer with a separate K2 and KPA100 combination so I can verify things. 73 Stewart G3RXQ On Sun, 23 Oct 2005 14:34:04 -0400, 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 _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
