RI-65-14
Playback Amplifier Unit
Description
RI-65-14 playback amplifier unit
RI-65-14 is the playback amplifier unit installed inside the RI-65-10 voice-message apparatus of the RI-65B aircraft warning system. Its documented function is provide final amplification and route the spoken warning to the crew headset circuits and, for designated channels, the aircraft radio input. The unit is a specific functional assembly and is not a complete RI-65B set.
Full descriptionCollapse description
Role in the RI-65B warning sequence
RI-65B receives discrete signals from aircraft alarm sensors, selects a message by priority and reproduces the corresponding recorded warning for the crew. In the documented sequence, RI-65-12 selects the input, RI-65-11 transports the magnetic tape, RI-65-13 connects and preamplifies the selected track, and RI-65-14 provides final playback amplification. RI-65-14 performs its own stage in this chain.
Associated RI-65 equipment
The immediate parent apparatus is the RI-65-10 voice-message unit. System equipment also includes the RI-65-20 remote control and RI-65-30 matching amplifier. The published RI-65B installation is used on Mi-8MT/Mi-8MTV and Mi-17-family helicopters.
System-level technical data
The RI-65B system handles up to 16 messages, automatically repeats each message twice and completes a playback cycle in 10–12 seconds. The audio path covers 300–3400 Hz, and the equipment uses 27 V DC aircraft power. These are system-level values from the operating documentation; they must not be interpreted as separate output or consumption ratings of RI-65-14.
Inspection, compatibility and ordering
Inspect the boards or mechanism, plugs, contacts, fasteners, seals and complete marking. Compatibility requires the RI-65-10 execution, connector assignment and applicable modification standard. Bench testing must follow the RI-65 manual and exercise the complete message chain. State RI-65-14, parent apparatus, aircraft, quantity and documentation in the enquiry. Related electronic products are listed under Electronic Control Units.
Technical details
- Product Name
- Playback Amplifier Unit
- Primary Designation
- RI-65-14
- Original Cyrillic Designation
- РИ-65-14
- Product Type
- Functional block of aircraft voice-warning equipment
- Parent Apparatus
- RI-65-10
All specificationsCollapse specifications
- Associated System
- RI-65B voice-warning system
- Documented Function
- Provide final amplification and route the spoken warning to the crew headset circuits and, for designated channels, the aircraft radio input
- Signal Chain
- RI-65-12 selection; RI-65-11 tape transport; RI-65-13 track switching/preamplification; RI-65-14 playback amplification
- System Message Capacity
- Up to 16 messages
- System Playback Cycle
- 10–12 s with automatic double playback
- System Frequency Range
- 300–3400 Hz
- System Power Supply
- 27 V DC
- Documented Aircraft
- Mi-8MT, Mi-8MTV and Mi-17 family
- Associated Equipment
- RI-65-10, RI-65-20 and RI-65-30
- Alternative Designations
- RI-65-14; RI65-14; RI 65 14; РИ-65-14
- Documentation
- RI-65 operating manual and product documentation
Payment & delivery
Orders ship from our hub in Dubai. Partner stock is first transferred to Dubai, then shipped to you.
Dubai stock: 100% before dispatch. Partner stock (Remote stock) and Pre-order: 50% advance payment to start the order and 50% before shipment from Dubai to you.
Availability, lead time, delivery cost and payment terms are confirmed for your order before payment.
Payment & delivery terms