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USER MANUAL FOR HARDWARE REV 3.11
07-APR-2018
PAGE 5
3.1.2
REPEATER CHANNEL 2
3.1.3
INPUT AUDIO ADJUST
The input audio adjust is used to adjust the amplitude of the volume coming from the receiver, with
clockwise rotation turning the amplitude down <needs confirmed>. This is an 18 turn, 10kΩ
potentiometer, multiple turns are required to effect a large change in amplitude, while fractional turns
yield fine resolution adjustments.
The input audio should be approximately <TBD> volts peak to peak as measured at Q1/Q2 (Bottom left
corner near mounting hole) as applicable for the channel being measure.
Input AUDIO Adjust
FLAT AUDIO SELECT
CTCSS HI <-> LOW
PORT 2
Interface
PIN 1
Output AUDIO Adjust
Output Amplifier Gain
COS
HI <-> LOW
