Bob's Blog #2: 7330 Internal Audio Levels
(Revised 07-03-2018)
The 7330 User Manual’s Appendix B (Installation) recommends adjusting the three receive audio pots for 1 V peak-to-peak as measured by an oscilloscope at test points TP9 (RX1), TP10 (RX2), and TP11 (RX3).
The 1 V p-p level is maintained throughout the audio section of the controller. This blog explains why that level was chosen.