Apache Labs ANAN-10 Users Guide
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 acheived with the slider at the extreme right, go to the Setup, transmit tab
(lower left), check "20db mic boost" and try again to adjust the "MIC" gain control on the main PowerSDR
window for 0 db on voice peaks.
If you are still unable to acheive 0 db on voice peaks you can try increasing the Setup, Transmit tab "Mic Gain
Max" to 30 db and try again to adjust the "MIC" gain control on the main PowerSDR window for 0 db on voice
peaks.
9. If you are still unable to acheive 0 db on voice peaks:
(a) Check your JP4, JP5 and JP6 jumper settings on the Hermes board.
(b) Try a different mic.
Comment from Warren NR0V to email group 11/25/12
Significant portions of the audio chain have been rewritten in the HPSDR version of PSDR in order to improve
various characteristics. You could try the following as a starting point:
On Setup Menu ---> Transmit:
1. set Mic Gain Max = 30
2. set Min Gain Min = -50
3. set Source = Mic In
4. BE SURE to check 20dB Mic Boost
5. Then, on the front panel, try a Mic Gain around 12 dB.
6. I also run with a COMP (Compression) level of 7dB.
7. BE SURE YOU HAVE THE ALC ON!
8. When things are operating properly, if you monitor the ALC meter, you should occasionally be hitting 0dB.
The ALC will not allow the output to exceed the level indicated by an ALC reading of 0dB. There's no harm to
hit 0dB fairly frequently.
For notes on ALC and a few other things that have been re-written for HPSDR,
see: http://openhpsdr.org/wiki/images/b/b4/POWERSDR_USER_NOTES.pdf
The speech compressor (now an equivalent of RF speech processing rather than a compander), transmit
leveler, ALC, and other bits and pieces of the transmit chain have been re-written in the HPSDR version of
PSDR.
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N9VV and KC9XG 22 of 42 v0.63 January 8, 2013
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