RE: [Elecraft] KSB2 P1 Wiring Questions
I just wonder why would a K2 owner want to spend good money for one of those solely to jumper the mic lines. There is a header to do the same thing on the rear of the front panel. Elecraft designed it so you can interface any mic to the K2, but I still believe it is easier to re-wire the mic plug as required. 73, Don W3FPR -Original Message- There is a new item from MFJ that people may find helpful when interfacing a mic to the K2. Its an MFJ-655 mic equalizer/conditioner/preamp that is supposed to interface any mic to just about any rig. It takes two types of mic connectors and the jumpering is done in the MFJ-655. You can use the standard setup with 2 pin jumper blocks in the K2 and not have to make any changes there. I don't have one but I think I will buy it soon. Read about it on the MFJ website. ___ 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
RE: [Elecraft] KSB2 P1 Wiring Questions
On Wed, 5 Apr 2006 08:22:01 -0400, Don Wilhelm wrote: There is a new item from MFJ that people may find helpful when interfacing a mic to the K2. Its an MFJ-655 mic equalizer/conditioner/ preamp that is supposed to interface any mic to just about any rig. I just wonder why would a K2 owner want to spend good money for one of those solely to jumper the mic lines. But but but the MFJ gadget costs in the $150 range. Got to keep the economy of Mississippi going after the hurricanes!! -- 73 de K2ASP - Phil Kane ___ 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
[Elecraft] KSB2 P1 Wiring Questions
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
RE: [Elecraft] KSB2 P1 Wiring Questions
Folks, My advice on mic wiring - unless you must use the mics with multiple rigs, wire the mic configuration header for the Elecraft mics, and then change the wiring at the mic plug to match the Elecraft configuration. By doing that, it certainly simplifies things a whole lot. I see no sense in wiring your Elecraft rig to work with a Yaesu mic (for instance) since that slaves you forevermore to using the Yaesu mic wiring configuaration. IMHO, if you have only an Elecraft station, the mic plugs should be wired for the Elecraft configuration. -- If you must use the mics on multiple rigs, then yes, I can understand that you might want to use that manufacturers mic wiring on your K2 so you can connect any mic wired for that rig, but lacking that, I say, change the mic wiring to the Elecraft mic wiring and you cannot go wrong. 73, Don W3FPR -Original Message- 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 ___ 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