Sent from my iPhone
Begin forwarded message: > From: Grant Youngman <[email protected]> > Date: June 4, 2011 3:12:03 PM CDT > To: "[email protected]" <[email protected]> > Subject: Re: [Elecraft] D 104 > > 10-15k is not high enough for good performance from a D-104 element. It will > sound like a squeaker at best, ir worse. > > Like I said. 500K MINIMUM. 5M better. > > > > > Sent from my iPhone > > On Jun 4, 2011, at 3:03 PM, Jim Brown <[email protected]> wrote: > >> On 6/4/2011 12:16 PM, Grant Youngman wrote: >>> That would be a COMPLETE AND TOTAL waste of time. The K3 mic input Z is 600 >>> ohms nominal per spec. >> >> Nominal is the operative word here. It's designed to have enough gain >> for the low impedance mics commonly used with ham gear. If you study the >> schematic, you see that the mic input stage of a K3 is NOT 600 ohms, >> it's an opamp, which is a fairly high Z load. The input Z is at least >> 10K, probably more like 15K -- there's a 10K resistor in series with the >> input! >> >>> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
