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USER MANUAL FOR HARDWARE REV 3.11
07-APR-2018
PAGE 4
3.1
INDEPENDENT REPEATER CHANNELS
The board supports 2 independent repeater channels, or ports 1 and 2. Each channel provides several
helpful features
Selectable High/Low COS/COR
o
Select the switch setting as shown in the following sections to select the polarity of
active signaling for your radio (typically active low)
Selectable High/Low CTCSS
o
Select the switch setting as shown in the following sections to select the polarity of
active signaling for your radio (typically active low)
Selectable Flat Audio
Adjustable audio input level
Adjustable audio output level
Optional Pull-up circuit for PTT
o
(for active high rigs, not installed by default, contact us if you need this functionality)
3.1.1
REPEATER CHANNEL 1
FLAT AUDIO SELECT
CTCSS HI <-> LOW
PORT 1
Interface
Input AUDIO Adjust
Output AUDIO Adjust
Output Amplifier Gain
COS
LOW <-> HI
PIN 1