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The Naval Research Laboratory (NRL) program referred to as NP-3D is a P3 aircraft that uses E-2C avionics.
The ICS system is a modified P3-Update IV system and is comprised of:
The CSU has 3 LEDs above each switch, digital LED brightness control, VOX threshold control and CALL.
Some features of the NP-3D System include:
- Link-4 Switching
- Link-11/Link-11 Radio Relay
- Secure RX/TX indication
- Simulcast
- Radio Relay (Plain crossband & Secure non-crossband)
- Alternate ICS
- Hi/Lo level selectable HDST support
- Crypto Switching
- 14 T/R radios, 4 Assignable Crypto's, 9 NAVAIDS, 5 Direct Access ICS nets, 3 Conference nets an Direct Dial
- Call Net
- Degraded mode
- Backup operation : 5 pre-assigned radios to 5 stations, PA to 2 flight deck stations, and CALL to all stations
- PA
- VOX
- Redundancy
- ICS Disconnect (knee switch & radio key)
- Monitor Overide
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