Bob et. al.., I am in the process of matching my D-104 to my K2 with a darlinton transistor emitter follower circuit to bring the roughly 250kOhm element impedence down to about 600 ohms. Got it to work fine with the K2 running QRP, but everything goes to-hell-in-a-handbasket once I ramp up the power. I'm powering the circuit off of the +5Vv pin the mic jack. I've grounded the mic jack shield and inserted a cap+toroid inductor filter on the +5v. This got the QRP version on the air, but I clearly have to do more when running 100w. So, if you can get the job done with just a transformer, that may be the simplest solution [and if you locate a good transformer forward the part number :) ]. Rob KC6ROC K2/100 #5924 --- "Robert C.Abell" <[EMAIL PROTECTED]> wrote:
> Attn. DW Holtman, > > I too have and use the Astatic 7077 mic for my Drake > TR-7 and have a D-104 for my > Collins KWM-2A. I doubt that they will work with an > Elecraft K3. They are high impedence > mics and the K3 would need a low impedence mic. > You may be able to hook them up through a matching > transformer however. > IMHO. > > 73, Bob VE3XM > _______________________________________________ > 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 > ____________________________________________________________________________________ Never miss a thing. Make Yahoo your home page. http://www.yahoo.com/r/hs _______________________________________________ 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
