Thanks, Don. That’s what I needed to hear. 73, Joel - W4JBB
> On May 28, 2016, at 15:52, Don Wilhelm <donw...@embarqmail.com> wrote: > > Joel, > > Ham and consumer "condenser" microphones should not be subjected to 48 volt > phantom power. That is for professional microphones which need that power. > The ham and consumer "condenser" microphones are normally referred to as > "electret" microphones rather than as condenser microphones. Those need a 5 > to 8 volt source applied to the AF lead through a resistor (usually 5K to > 10k). > > I would recommend using a switch rather than a mixer. You do not want an > open mic when operating digital modes, nor do you usually want the soundcard > connected when using voice signals. > With a hard-wired switch, you can turn the bias on in the MIC SEL menu when > operating voice. If you want to leave bias turned on even though you are > working digital modes, add a series capacitor in the AF line to the soundcard > output. > > If you want to use the mixer, I would suggest an audio pro microphone. If > that mic needs phantom power, then turn it on. > > 73, > Don W3FPR > > On 5/28/2016 8:45 AM, Joel Black wrote: >> I am not a professional sound engineer by any stretch of the imagination. I >> am usually more surprised than anyone else when I get something working. I >> do, however, have my sound card working for AFSK modes with the KX3. At one >> point, I thought I wanted a mixer and asked such of this group. I may still >> go that way but in an effort to keep my station as "minimalist" as possible, >> I was thinking of a sound card with multiple inputs. >> >> I currently have a Focusrite 2i2 I bought after my E-MU 0204 stopped working >> in OS X 10.11. It has two inputs and two outputs. Experimenting the other >> day, I tried using my MH3 mic on the input to the sound card with the sound >> card output going to the MIC IN on the KX3. It didn’t work. I then realized >> that the MH3 is a condenser mic and needs to be powered. The 2i2 has a “48 V >> phantom power” switch, but I am a little nervous of turning that on. I don’t >> want to let all the “magic smoke” out of my mic. >> >> After all of that, I began remembering an issue I had with a Genesis G59 SDR >> I built several years ago - the delay in the route from audio in to the >> sound card, the sound card input being processed by the computer, the >> computer outputting that data to the transmitter. It was quite reminiscent >> of my days operating the HEO satellites. The delay is unnerving and I have >> never been able to compensate for it other than turning off MON. I’m >> supposing I’ll have the same delay if I incorporate a sound card for >> multiple inputs. >> >> Would I be better off just adding a mixer? >> >> 73, >> Joel - W4JBB >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to donw...@embarqmail.com > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
