Microphone Settings; Adjusting Mic Gain - Apache Labs ANAN-100/D Manual

Microphone Settings

Adjusting mic gain .

The ANAN-100/D microphone gain must be adjusted for each microphone used with the radio. The internal
jumpers JP4, JP5, and JP6 on the Hermes board must be set properly for the type of microphone used. See
the reference section of this document for the jumper settings, or refer to the document by Phil Harman
VK6APH: http://svn.tapr.org/repos_sdr_hpsdr/trunk/Hermes/Documentation
1. You should make all microphone adjustments into a Dummy Load.
2. Select P*SDR menu Setup ---> DSP ---> AGC/ALC tab. The "Leveler" and "ALC" enabled check boxes
must be checked or enabled before the Microphone gain can be properly set.
3. Select Setup, transmit tab and at lower left, Set "Mic Gain Max" to 20 and select Source as "Mic In".
4. On the P*SDR main window, use the "TX meter" (Upper right corner) dropdown box to select "Mic".
5. Select modulation mode of USB or LSB at the right, center of the P*SDR window.
6. Locate the "MIC" gain control slider. It is located at lower right, below the panadapter. The present mic
gain setting is shown just to the right of the MIC gain slider.
7. Press your mic PTT button or click the "MOX" button on the main form to key the radio. With the radio
keyed and while speaking into the mic in a normal voice adjust mic gain for peaks at 0db
8. If 0 db voice peaks cannot be achieved with the slider at the extreme right, go to the Setup, transmit tab
Revision v1.8 April 23, 2013
Apache Labs ANAN-100/D
33 of 70 authors N9VV and KC9XG