The N1MM documentation shows a simple circuit for keying via DTR/RTS or parallel port using a 1K resistor and an NPN transistor (2N2222 or equivalent): https://n1mmwp.hamdocs.com/setup/interfacing/
> On Dec 8, 2021, at 9:44 AM, Bill Coleman <[email protected]> wrote: > > > >> On Dec 7, 2021, at 4:13 PM, [email protected] wrote: >> >> I need advice for getting N1MM+ to play well with a K2. > ... >> I know that when using my K3 with N1MM it's necessary to have the K3's menu >> settings for DTR and RTS set properly to CW to match the settings in N1MM . >> . . but I have found no such option in the K2 menus. I have also read that >> it can be done using a W1EL keyer, but having outboard dongles sort of >> defeats my purpose. >> >> Can it be done with just the K2/KIO2, a KUSB cable, and an ordinary >> computer? > > The K2 serial interface does NOT support DTR or RTS. It only supports three > wires - TxD, RxD and Ground. > > One CAN run a K2 with KIO2 or KPA100 on a single serial port and key CW. But > you have to build your own adapter to take the DTR signal and key the rig > through the KEY connector. The adapter consists of a transistor and resistor, > so it can be easily built into a connector housing. > > Bill Coleman, AA4LR, PP-ASEL Mail: [email protected] > Web: http://boringhamradiopart.blogspot.com > Quote: "Not within a thousand years will man ever fly!" > -- Wilbur Wright, 1901 > > ______________________________________________________________ > 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 > Message delivered to [email protected] Bill Coleman, AA4LR, PP-ASEL Mail: [email protected] Web: http://boringhamradiopart.blogspot.com Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901 ______________________________________________________________ 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 Message delivered to [email protected]
