The D44 does not have a mic preamp like the Firebox. You will get the best results using a mic preamp. You can play with the signal level input values in the D44 control panel to gee if that will get you some more gain.
When I was using the D44 with a Heil PR20 mic, I got the best results using W2IHYs EQplus or 8-Band EQ to provide the preamp function (I already had them in use with my Icom) along with some added audio chain processing. The EQ plus or the 8-Band output wired into the SDR1K using the Foster connector can provide PTT function as well with a remote switch (foot or hand). The added benefit of this setup is that I also use the audio chain with my Icom (backup rig) with just a twist of the rig selector switch on the EQplus or 8-Band EQ. -Tim --- Tim Ellison ( [EMAIL PROTECTED] ) Integrated Technical Services ( http://www.itsco.com ) -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jerry Harley Sent: Wednesday, April 26, 2006 8:29 PM To: FlexRadio@flex-radio.biz Subject: [Flexradio] Unable to get an acceptable Tx audio Compaq 2.4 EVO, New SDR1000, M-Audio D44, Hosa cables, Heil goldline/hc5, Yaesu/Heil cord. My best audio is at mic gain 50, but mic meter never reads better than 25. If i turn the mic gain to 55 I can get -22 but the transmit audio has a lot of ehco. With just key down,no audio I'm seeing 60db on the panadapter. Computer noise? How are people who connecting directly to the mic D44 doing push to talk? Jerry WA2TTI _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://mail.flex-radio.biz/pipermail/flexradio_flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com
