If I read the KIO3-D Sub RS232 IO Board schematic correctly, pin 6 of J24 (the 9-pin RS-232 connector) is not connected to anything inside the K3. The labeled (connected) pins are:
2 (RXD OUT) 3 (TXD IN) 4 (DTR IN) 5 (COMMON) 7 (RTS IN) Dick, K6KR -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Lance Collister Sent: Thursday, February 05, 2009 7:26 PM To: 'Elecraft Group' Subject: [Elecraft] Adding DSR (serial port line 6) interrupt in a Firmware Update? I recall that there was an email recently that the K3's internal DVR was interrupted when the microphone or footswitch is activated to manually transmit. I am very interested to learn if it might be possible at the same time to also send an interrupt signal to the unused DSR line (serial pin #6). This interrupt is used by several computer programs (TRX-Manager, Multikeyer, Voice Keyer Express) at my station that automatically key the rig and send CW (via the DTRor SSB messages. Although these programs have primarily been used here for VHF meteor scatter schedules, they are also very handy for working contests and other band openings. The K3 is of course well suited to work with any such external computer programs due to its built-in audio interface. However, when the operator switches to manually keying the K3, it would be really great if an interrupt could be sent to the computer programs via the serial port so that they stop their automatic keying of the PTT line and also stop sending audio or CW signals to the K3. Adding a computer interrupt on the (currently unused) DSR line would accomplish this and broaden the flexibility of the K3. Thanks for your kind consideration! VY 73, Lance -- Lance Collister, W7GJ (ex: WN3GPL, WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8) P.O. Box 73 Frenchtown, MT 59834 USA QTH: DN27UB TEL: (406) 626-5728 URL: http://www.bigskyspaces.com/w7gj 2m DXCC #11, 6m DXCC #815 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
