Could you tell us what you found in the MH-2 ??? On Thursday, September 02, 2004, at 09:46AM, <[EMAIL PROTECTED]> wrote:
>I had the occassion to take apart the hand held mic that Elecraft carries >(MH-2?) and was really shocked at what I found inside. > >Now as a mostly CW guy I really don't have a good appreciation of sound >quality, but I'm finding this thread very interesting. > >Tom >WB2QDG > >----- Original Message ----- >From: Jim Brown <[EMAIL PROTECTED]> >Date: Wednesday, September 1, 2004 8:22 pm >Subject: Re: [Elecraft] Microphone for K2 > >> I must not have been clear. it is not "another option" -- it's >> precisely the >> Plantronics headset I noted I had seen at Fry's Electronics. So >> everything >> that applies to making a cell phone headset work applies equally >> to >> making the PC headset work. >> >> The point is that these headsets differ only in 1) the quality of >> the headset >> and mic elements; 2) Physical comfort; 3) the connector(s) on the >> end. All >> of the Plantronics headsets have noise cancelling mics. Bill, >> NY9H, has >> observed that these capsules (and the capsules used in the VERY >> expensive ham mics) sell for half a dollar or less without the >> name of the >> very expensive ham mic marketing company on them. >> >> Another point. Plantronics is an old line telecommunications >> company. >> The "Altec Lansing" NAME was purchased at least a decade ago, is >> applied to cheap junk from the far east, and sold. There is no >> connection >> (other than this sale of the name) between the company using the >> name >> and the company that MADE the name a household word for high >> quality >> audio. In spite of its pedigree, I'll bet your headset works a >> treat on the K2! >> >> What can be very tricky to get to work is a headset with an inline >> PTT >> switch sold to work with a ham talkie. In essence, you have to do >> major >> surgery on what is a very delicate (and cheap) switch with very >> tiny and >> delicate wiring to either disable it or rewire it to work with a >> radio for which >> it was not intended. I bought one of these new at a hamfest. VERY >> bad >> idea. >> >> Jim Brown K9YC >> >> --Original Message Text--- >> From: [EMAIL PROTECTED] >> Date: Wed, 1 Sep 2004 19:08:31 EDT >> >> Another option may be to use a PC microphone/headset that are >> available in the market >> at very low prices. I use an Altec Lansing AHS-201 headset >> electret boom microphone >> with a single earpiece with my K2. As the headset is terminated in >> the standard 2 x >> 3.5mm stereo jacks I made up the necessary connectors and a PTT in >> a small plastic >> box with two leads out for the K2, 8 pin mic connector and a >> 3.5mm stereo plug for the >> headphone connector. A foot switch could be added if desired for >> PTT. The +5V bias >> voltage is already available at P1 on the K2 Front Panel board. >> All it takes is a suitable >> resistor to provide the bias voltage needed from the +5V on P1 pin >> 6 to the designated >> AF pin or pin 1 on the K2/KSB2 side. There is already a 2.2uF >> isolating capacitor, C34 >> on the KSB2 I/P, so no other isolation is required with the >> standard K2/KSB2. The bias >> voltage needed for the Altec Lansing AHS-201 does not seem >> critical. I used a single >> AA 1.5V dry cell in tests and with that was able to overdrive the >> K2 in the microphone >> high setting. >> >> An added advantage with this particular headset is the microphone >> is noise cancelling >> for use in noisy situations and the earpiece seems to work well >> with the K2 giving a >> good RX audio level. I had built the setup originally to use with >> a Yaesu VHF/UHF >> mobile and it was pleasing to find that it worked very well with >> the K2. Trying it out was >> easy as I already used the Yaesu standard for the K2 8 pin >> microphone connector. The >> Altec Lansing AHS-201 should be retailed from about $10 in the >> USA. The obsolete >> AHS-15 should also work well at an even cheaper price if still >> available. >> Bob, G3VVT >> K2 #4168 >> >> >> >> _______________________________________________ >> 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 > > -- Jean-François Ménard, VA2VYZ [EMAIL PROTECTED] Club des Astronomes Amateurs de Sherbrooke Club Radio Amateur de l'Estrie http://homepage.mac.com/jfmenard -- _______________________________________________ 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
