To be safe you should use a stereo plug. But in actual practice a mono will work too. I have to admit...When building my Microham cable for the K3 I jumped the gun and used a mono plug and it works fine.
------------------------- 73, Greg - AB7R Whidbey Island WA NA-065 K3#0009 On Thu Feb 7 0:59 , "David Ferrington, M0XDF" sent: >Hmmm - the Mic plug on the Elecraft ProSet-K2 is mono. >There is not 'Stereo' warning below the mic socket on the reap panel. > >Didn't I read that the socket was designed this way, so that a mono plug can >be plugged in safely? I assume if you plug in a mono plug, the unconnected >'ring' connection on the socket just mated with the sleeve too. > >ProSet works just great on rear socket. > > >On 7/2/08 01:35, "Greg" [EMAIL PROTECTED]> sent: > >> The mic jack on the RP is a stereo jack. You should use a stereo plug with >> audio on the tip and ground on the sleeve...nothing on the ring. >> >> 73 >> Greg >> AB7R >> >> >> -----Original Message----- >> From: [EMAIL PROTECTED] >> [EMAIL PROTECTED]','','','')">[EMAIL PROTECTED] Behalf Of Dale LeStourgeon >> Sent: Wednesday, February 06, 2008 5:23 PM >> To: [EMAIL PROTECTED] >> Cc: elecraft >> Subject: Re: [Elecraft] K3: computer headset connection >> >> >> [EMAIL PROTECTED] wrote: >>> I'm looking for information on connecting a computer headset's boom mic to >> the K3 rear mic jack. I've read through the archives, but it seems the >> messages either refer to making connections via the front jack (with its >> discrete pins available), or just, "I plugged it in & it worked." I don't >> have my K3 yet to test with. My following questions are based on the >> scenario that just plugging it in doesn't work. >>> >>> My mic plug is stereo, so I'm assuming its an electret. The K3's jack is >> mono, but apparently has a bias voltage available via the menu. I'd like to >> build a "dongle" (short adapter cable) to interface the mic with the jack. >> To preserve the headset, I don't want to modify its plug or cable. >>> >>> Does the bias voltage appear on the tip of the K3's jack? One archived >> message indicated that at least some computer mics have both the ring & tip >> connected together; I'm at work now & can't test mine. Would I add a >> resistor across the tip & ring lines, and add a small capacitor in-line from >> the K3's jack tip to the mic's tip to block DC? >>> >>> Sorry for what may be a painfully obvious set of questions, but I've never >> connected anything but a regular mic to a rig before. I plan on using the >> rear jacks to keep unnecessary cables from cluttering up the front of the >> rig. >>> >>> 73, >>> >>> Mike >>> KW1ND >>> _______________________________________________ >>> 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 >>> >>> >> Mike, >> I could not find out from the manual how the rear mic jack is configured >> ( whether bias is on tip or ring) but I just plugged in a computer mic >> and it works fine; and I am using a PTT foot switch. Perhaps it was just >> luck that the computer mic had the same setup as the K3 mic jack. It >> would still be nice to know how the K3 mic jack is configured for >> tip/ring/sleeve. Getting good audio reports with the computer mic. >> Dale >> K5AJZ >> _______________________________________________ >> 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 >> >> _______________________________________________ >> 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 > >-- >An old miser kept a tame jackdaw, that used to steal pieces of money, and >hide them in a hole, which a cat observing, asked, "Why he would hoard up >those round shining things that he could make no use of?" "Why," said the >jackdaw, "my master has a whole chestfull, and makes no more use of them >that I do." -Jonathan Swift, satirist (1667-1745) > > _______________________________________________ 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
