Figure 1-2. AM 1780/VRC SINCGARS Radio Interface P ath

M J505, J506, J507 (CREW) J504 (COMMANDER) Figure 1-2. AM 1780/VRC SINCGARS Radio Interface P ath L RT A A250 AMP K502 SRM FIXED AUDIO ALL RT A VARIABLE AUDIO J RT B VARIABLE AUDIO K ALL RT A, SRM, A , TRANSMIT AUDIO A C V RT B TRANSMIT AUDIO C D ALL SRM KEYING A , F RT B KEYING C M L RT A SRM FIXED AUDIO ALL RT A VARIABLE AUDIO J RT B VARIABLE AUDIO K ALL RT A, SRM, A , TRANSMIT AUDIO A C V RT B TRANSMIT AUDIO C F RT B KEYING C J501 K RT A, SRM FIXED AUDIO RT A VARIABLE H AUDIO RT A, D ALL SRM KEYING A , RT A, RT A, SRM TRANSMIT U AUDIO S RT A, SRM KEYING J503 K RT B FIXED AUDIO RT B VARIABLE H AUDIO RT B TRANSMIT U AUDIO S RT B KEYING INT ACCENT ON OFF INTERCOM AUDIO K503 K501 LISTENING SILENCE CDR + CREW CDR ONLY RADIO TRANS RETRANS OTHER INT ONLY INSTALLATION NOTES: 1) SHOWN ENERGIZED. RELAYS K501, K502, K503 ARE 2) INDICATES EQUIPMENT MARKING.