Fellow Elecrafters-- I've successfully completed the KSB2 module for my K2/100 through p. 16 in the manual, front panel PCB component installation.
Now it's time for mic configuration, p. 17. Winding toroids, soldering multi-pin connectors and IC's, stuffing capacitors, etc.--those I don't mind. However, when it comes to mic configuration and the possibility of fouling up my K2 via an incorrectly-wired 5V line--that's when I get jittery. Here are the details: 1) Initial mic to be used: Kenwood MC-60 2) Eventual mic to be used: Radio Shack RS 33-1187 headset 3) P1 wiring method: N0SS's computer plug (thanks for the info on your website, Tom) or two-pin jumpers--both are at hand. After studying the KSB2 manual and reading postings in the Elecraft reflector archives, here are some questions: 1) Several reflector postings mention that for Kenwood settings, just use jumpers straight across for all the "Signal" and "Mic pin" connections. However, on p. 18 under Kenwood mics, there's a note: "Do not connect pin 5 unless mic has internal preamp," and another, "Leave pin 6 of the mic unconnected." I plead ignorance--does the MC-60 have an internal preamp? If it does, according to the manual I should connect signal pin 6 to mic pin 5. 2) I've read a posting that mentions leaving the bottom slide switch on the MC-60 "off." Done. Wonder if this negates the warning listed above and I should just leave signal pin 6 ("5V") unconnected? 3) The MC-60 has two impedance settings, 50K and 500--is there a preferred setting with the K2? 4) Any suggestions for wiring an 8-pin female mic plug from the RS 33-1187 that'll be compatible with Kenwood P1 settings? Finally, it's been mentioned before but for those who need it here's the Radio Shack part number for a package of ten two-pin jumpers: 276-1512. 73, John, N7ON K2/100 S/N 5023 P.S. Many thanks to Elecraft's Gary and Richard as well as to N6WG and WB6TQG for their continued assistance with the KSB2, microphones, and RTTY. _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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