Barrett PRC-4090 - Page 218

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BARRETT PRC-4090 TACTICAL HF SDR TRANSCEIVER - APPENDICES
2. External Speaker Connector
PIN Signal
A
Dock Speaker Detection
B
Speaker Out Positive
C
Speaker Out Negative
D
Ground
3. H-250 Handset Connector
PIN Signal
A
H250 Handset Ground
B
H250 Speaker output
C
H250 PTT
D
H250 Microphone
E
Reserved
F
Reserved