Narco Escort Ii Installation Manual Full Upd -

The Narco Escort II is a compact, lightweight (3 lbs) "shared system" avionics unit that functions as either a 720-channel COM transceiver or a 200-channel VOR/LOC NAV receiver, though it cannot perform both functions simultaneously. Unlike traditional indicators, it utilizes a gas discharge display with a row of lights for VOR/LOC deviation instead of delicate meter movements. Installation Specifications

Proper installation requires adhering to specific wiring and mounting standards to ensure airworthiness and optimal signal performance.

Mounting: The unit is designed for instrument panel mounting in fixed or rotary-wing aircraft.

Antennas: The system typically utilizes two dipole antennas—a V-shaped NAV antenna often built into airframe structures (like a canard) and a COM antenna usually made from copper tubing located in the fuselage. Wiring Standards: Signal Leads: Should be 22 AWG. Power and Ground: A+ and ground leads should be 16 AWG.

Protection: A 1.5 amp circuit breaker must be provided between the unit and the aircraft power bus.

Shielding: Shielded wire must be used for radio leads to prevent electronic noise interference. Wiring Pinout (P301 Connector)

The P301 connector facilitates the primary electrical interface for the Escort II. Note that for 14V systems, a jumper is required between pins 8 and 10. 14/28V Power Input Airframe Ground Low Level Audio Headphones Audio (50 mW across 300 ohms) Transmitter A+ Transmitter Key Switched A+ Mike Audio Intercom Key Mike/Phones Ground Intercom Functionality

An internal intercom feature is available by grounding P301 pin 12 through an external switch. When activated with the mike key line open, the microphone audio bypasses the transmitter and is amplified for use as an intercom, outputting through pins 5 and 6.

For further technical details or full schematics, you can view the Narco Escort II Pinout Guide provided by AeroElectric. narco avionics escort ii - AeroElectric

Narco Escort II is a lightweight, digital "shared system" radio that functions as either a 200-channel VOR/LOC NAV receiver or a 720-channel COMM transceiver. Unlike standard indicators with needle movements, it uses a gas-discharge display for VOR/LOC deviations. Electrical Installation & Pinout (P301 Connector)

The unit uses a multi-pin P301 connector for primary electrical and audio interfaces. For a standard 14V system, pins 8 and 10 must be jumpered. Wiring Specification 1 & 2 +14/28V Power Input 18 AWG Red 3 & 4 Airframe Ground 18 AWG Black 5 Low-Level Audio 20 AWG Green 6 Headphones Audio 20 AWG Blue (50 mW high-level output) 8 Switched A+ 18 AWG White/Red 9 Transmitter Key 20 AWG White 11 Mike Audio 20 AWG Brown 12 Intercom Key 20 AWG Yellow (available at pin 12) 13 Mike/Phones Ground 20 AWG Black Installation Guidelines

Wiring: Use a minimum of 22 AWG for signal leads and 16 AWG for A+ and ground leads. Ensure all wires are shielded to prevent radio noise.

Protection: A 1.5 amp circuit breaker should be installed between the unit and the aircraft power bus.

Antennas: The radio requires two separate dipole antennas: a V-shape NAV antenna and a copper tubing COMM antenna. Use RG-58 A/U 50-ohm coax for the COM antenna and RG-58 4/U coax for the NAV antenna.

Mounting: The unit is typically mounted in the instrument panel using a rear support stud for stability. Intercom Configuration

An internal intercom function is activated by externally grounding pin 12 via a switch. When active, microphone audio is amplified and sent to the audio outputs at pins 5 and 6, bypassing the transmitter. If using a dual-microphone setup, both mics must be the same manufacturer and model to maintain consistent audio levels. Initial Setup & Testing

Once installed, the unit should be calibrated following the manufacturer’s instructions to ensure accuracy. Perform a thorough inspection to confirm that the installation does not interfere with the free movement of any aircraft flight controls. narco avionics escort ii - AeroElectric

Narco Escort II is a digital, "shared system" radio that functions as either a 720-channel COMM transceiver or a 200-channel NAV receiver with a built-in VOR/LOC indicator, though it cannot perform both functions simultaneously Bennett Avionics Core Installation Data

Installation typically utilizes a single 13-pin connector (P301) for power and signal routing. AeroElectric Wire Size (AWG) 14/28V Power Input 14/28V Power Input Airframe Ground Airframe Ground Low Level Audio Headphones Audio (50mW output) Transmitter A+ Transmitter Key Switched A+ Mike Audio Intercom Key Mike/Phones Ground

Note: For 14V aircraft systems, pin 8 and pin 10 must be jumpered together. AeroElectric Antenna and Wiring Requirements Antenna Connections:

The unit requires two separate coaxial inputs: one 50-ohm RG-58 A/U for the COM antenna and another for the NAV antenna. Audio Output:

The high-level audio output at Pin 6 provides 50mW into a 300-ohm impedance. Intercom Function:

An intercom mode is activated by grounding Pin 12 through an external switch while the mike key line is open, allowing mike audio to bypass the modulator and reach the headphones.

The unit is instrument panel-mounted and weighs approximately 3 pounds. AeroElectric Manual & Technical Resources Pinout Diagram: A detailed 14V system wiring diagram is available via AeroElectric General Avionics Data: narco escort ii installation manual full

Further technical specifications and maintenance info can be found in larger Narco Maintenance Manuals Replacement Advice:

Users often note that the Escort II uses a flat PC-board edge connector style, making direct swaps with modern radios difficult without replacing the harness. for a replacement harness or a specific wiring diagram for 28V systems? AI responses may include mistakes. Learn more narco avionics escort ii - AeroElectric

2.4 What to Avoid

Manual aggregator sites asking for credit card “verification” – These are often scams.
Single-page PDFs titled “quick reference” – These lack wiring details.
Any file that does not include the Narco copyright header (even though expired, a missing front matter suggests an incomplete copy).

Pre-Installation Checklist

System Requirements: Ensure your computer or device meets the minimum system requirements for the software. These can usually be found on the software provider's website or in the product documentation.
Download or Access to Media: Have the installation files readily available. This could be a download link from the official website or physical media provided with the purchase.
Administrative Access: Make sure you have administrative access to the computer or device you are installing the software on. This is typically required for software installations.
Backup: Consider backing up your system before installing new software, especially if it's complex or you are unsure of its compatibility.

7. Safety and Compliance

FCC License: The manual reminds the installer/operator that an FCC license may be required for operation.
Airworthiness: Installation must be performed in accordance with FAA Advisory Circular 43.13-1B (or current revision) and applicable STCs (Supplemental Type Certificates) if the unit is not a direct replacement for the original equipment.

8. Conclusion

The Narco Escort II Installation Manual provides a comprehensive guide for integrating the transceiver into general aviation aircraft. Successful installation relies heavily on proper power regulation, a low-impedance antenna system, and secure mechanical mounting. Adherence to the wire gauge specifications and grounding procedures outlined in the manual is essential to mitigate electrical noise and ensure reliable transmission performance.

Finding a "full" paper manual for the Narco Escort II can be difficult since Narco Avionics is no longer in business. However, core installation data and wiring diagrams are available through archival aviation resources. 🛠️ Installation Resources

You can find the essential wiring and pinout data through the following links:

Official Pinout Diagram: The AeroElectric Escort II Pinout provides the full 13-pin connector layout.

Complete Wiring Guide: The Q2 Aircraft Wiring Project includes detailed diagrams for mounting and connecting an Escort II in an instrument panel. 🔌 Pinout & Wiring Specifications

The Narco Escort II typically uses an 18-pin Molex connector (though only 13 pins are frequently used in standard 14V setups). P301 Connector Pin Assignment (14V System) Pin Wire Color/Gauge 1 & 2 14/28V Power Input 18 AWG (Red) 3 & 4 Airframe Ground 18 AWG (Black) 5 Low Level Audio 20 AWG (Green) 6 Headphones Audio 20 AWG (Blue) 8 Transmitter A+ (Jumper to 10 for 14V) 18 AWG (White/Red) 9 Transmitter Key (PTT) 20 AWG (White) 11 Mike Audio 20 AWG (Brown) 12 Intercom Key 20 AWG (Yellow) 13 Mike/Phones Ground 20 AWG (Black) 📡 Antenna & Hardware Requirements

Connections: Uses two BNC connections—one for the NAV antenna and one for the COM antenna.

Cable Type: Use RG-58 A/U 50-ohm coaxial cable. Keep lengths under 9 feet to minimize signal loss (less than 2 dB attenuation).

Mounting: Designed for standard instrument panel mounting. Ensure the mounting hardware is electrically connected to the airframe ground plane.

Protection: Requires a 1.5 amp circuit breaker between the unit and the aircraft power bus.

⚠️ Important Note: Since Narco is out of business, technical support is limited. For internal repairs or bench testing, you may need a specialized harness kit like those mentioned on FCCID.io.

If you need help with a specific part of the installation, let me know: Are you doing a new install or a replacement? Are you working with a 14V or 28V electrical system?

The Narco Escort II is a compact, self-contained Nav/Com system designed for instrument panel mounting in general aviation aircraft. Unlike traditional units that require external indicators, the Escort II features an integrated "gas discharge" display that provides both frequency readouts and VOR/LOC deviation using a row of lights instead of mechanical needles. General Installation Overview

The unit is designed for cabin environments in fixed or rotary-wing aircraft. It typically operates on a 14V DC system, though 28V installations are possible with a dedicated power converter. Electrical Pinout and Wiring (P301 Connector)

The Escort II uses a multi-pin connector (P301) for power, audio, and antenna interfacing. For a standard 14V installation, a jumper is required between pins 8 and 10. Wire Size/Color 1 14/28V Power Input 18 AWG (Red) 2 14/28V Power Input 18 AWG (Red) 3 Airframe Ground 18 AWG (Black) 4 Airframe Ground 18 AWG (Black) 5 Low Level Audio 20 AWG (Green) 6 Headphones Audio (50 mW) 20 AWG (Blue) 9 Transmitter Key 20 AWG (White) 10 Switched A+ (Output) 18 AWG (White/Red) 11 Mike Audio 20 AWG (Brown) 12 Intercom Key 20 AWG (Yellow) 13 Mike/Phones Ground 20 AWG (Black) Data sourced from the Narco Escort II Pinout Diagram. Antenna Installation

The system requires two separate antennas: one for Navigation (NAV) and one for Communication (COM).

Antenna Types: Standard dipole antennas are typically used. The NAV antenna is often V-shaped, while the COM antenna is usually a whip or tubing style. The Narco Escort II is a compact, lightweight

Cabling: Use 50-ohm RG-58 A/U coaxial cable for both connections.

Mounting: Antennas must be electrically connected to the aircraft ground plane. For composite or thin-skinned aircraft, a doubler plate is required for structural integrity and electrical performance. Intercom and Audio Setup The Escort II includes a built-in 50 mW audio amplifier.

Intercom Key: An intercom function is available on Pin 12. When this pin is grounded through an external switch while the mike key line is open, audio from the microphone bypasses the transmitter and is heard through the headphones.

Microphone Matching: If using a dual-microphone setup, both microphones should be the same model to ensure consistent audio levels. Mechanical Mounting

The unit is mounted directly into the instrument panel. It is secured within a mounting tray that facilitates easy removal. The rear of the unit includes a support stud to stabilize the radio against vibration. Technical Specifications

Frequency Spacing: COM utilizes 25 kHz spacing, while NAV uses 50 kHz.

Display: Digital gas discharge for frequencies and deviation indicator.

Power Requirements: Designed for engine-driven alternator systems with a battery floating on the DC bus. A 1.5 amp circuit breaker is recommended.

For a complete archive of available documents, aircraft owners often refer to the Narco Manuals collection hosted by the Cessna 170 Association. narco avionics escort ii - AeroElectric

The Narco Escort II is a combined VHF communication (COM) and navigation (NAV) radio designed for standard 3-inch aircraft instrument panel mounting.

The following guide summarizes critical installation steps based on technical documentation from AeroElectric and other aviation technical sources. 1. Mechanical Installation

Mounting: The unit is designed to fit a standard 3-inch circular cutout. It is secured via three #6-32 screws, with specific lengths determined by your panel thickness.

Rear Support: A support stud on the rear of the unit must be used to provide additional stability during flight. 2. Electrical Pinout (P301 Connector)

The primary interface is the P301 connector. For 14V aircraft, you must jumper Pins 8 and 10. Wiring Note 1 & 2 +14/28V Power Input Use 18 AWG Red wire 3 & 4 Airframe Ground Use 18 AWG Black wire 5 Low Level Audio 20 AWG Green; used for audio panels 6 Headphone Audio 20 AWG Blue; 50 mW into 300 ohms 11 Mike Audio 20 AWG Brown 12 Intercom Key 20 AWG Yellow; grounds to activate 13 Mike/Phone Ground 20 AWG Black 3. Antenna Connections

NAV Antenna: Connects via a 50-ohm RG-58 A/U coax cable. The antenna is typically a V-shape dipole.

COM Antenna: Also requires 50-ohm RG-58 A/U coax. Ensure the antenna is properly grounded to the aircraft skin for a clear radiation pattern. 4. Special Intercom Feature

An internal intercom function is available through Pin 12. When this pin is externally grounded via a switch and the microphone key line is open, the microphone audio is amplified directly to the headphone outputs. 5. Final Checks

Audio Testing: Pin 6 provides high-level output for headphones. Do not parallel this pin with other audio outputs, as its low impedance can attenuate other signals.

Shielding: Use shielded wire for microphone and audio lines to prevent EMI/RFI noise in the cockpit.

The Narco Escort II is a legacy "shared system" digital radio that functions as either a NAV or a COM, but not both simultaneously. Because Narco Avionics is no longer in business, full manuals are often sold as physical copies or digital scans from specialized aviation document services. Manual & Pinout Resources

Detailed Pinout & Wiring Diagram: A high-quality PDF of the Escort II 14V Pinout and Intercom Setup is available via AeroElectric, which includes intercom arrangements and specific pin functions. Full Installation/Maintenance Manuals:

Essco Aircraft: Offers the Narco Escort 110 (14V) Maintenance & Installation Manual for purchase as a printed copy or download.

eBay: Frequently lists used original Narco Escort 810/811 Maintenance Manuals, which often include the installation sections. Key Installation Specifications Narco Escort II is a specialized

Mounting: The unit is designed for instrument panel mounting and weighs approximately 3 pounds. It typically uses a mounting tray with a ramping screw that requires a 3/16" Allen wrench to secure the unit firmly into the mating connector.

Electrical Requirements: Standard installations are 14V. If installing in a 28V aircraft, a separate power converter is typically required.

Intercom Key Function: Available at connector P301 pin 12. When this pin is externally grounded through a switch and the mike key line is open, mike audio is amplified by a 50 mW amplifier and routed to audio outputs at pins 5 and 6.

Antenna Requirements: The radio requires two dipole antennas: one for NAV (often V-shaped) and one for COM (often located in the fuselage or vertical tail).

Microphone Caution: If using the intercom feature, both the pilot and co-pilot microphones must be the same manufacturer and model to prevent audio level shifts when one is disconnected. Typical Connector Pinout (P301) 5 & 6 Audio Outputs 9 Co-pilot Mike Key 11 Pilot Phones Jack Audio 12 Intercom Key (Ground to activate) 13 Mike & Phones Jack Ground narco avionics escort ii - AeroElectric

I’m unable to provide a full copy of the Narco Escort II Installation Manual due to copyright restrictions. However, I can offer a practical review of what you can expect from that document, where to find it legitimately, and how to use it effectively.

Review: Narco Escort II Installation Manual (Full Version)

Weaknesses / Common Complaints

Scanned copies – Many “full” PDFs online are poor quality (blurry schematics, missing fold-out pages).
Missing supplements – Later revisions added GPWS output wiring, but older manual versions omit this.
No troubleshooting section – Fault diagnosis is in a separate maintenance manual, not the installation manual.
Obsolete vendor support – Narco Avionics is out of business (since early 2000s), so no tech support for gray areas.

Final Recommendation

If you are an A&P or avionics technician installing this unit in an experimental or legacy certified aircraft, the full manual is essential—but only a clean, complete, revision-correct copy. For homebuilders, the manual is still valuable, but be aware that many surplus Escort II units were sold without the installation data, leading to dangerous guesswork.

Better alternative: For a similar radar altimeter with modern support, consider FreeFlight Systems’ RAN series. If you must use the Escort II, buy the reproduction manual from a reputable vendor like Essco rather than hunting for a “free full” version.

Narco Escort II is a specialized, lightweight "shared system" avionics radio designed for light aircraft. Unlike standard dual-function units, it can operate as either a NAV receiver or a COMM transceiver, but not simultaneously. System Specifications Approximately 3 pounds. COMM Capability: 720-channel transceiver. NAV Capability: 200-channel VOR/LOC receiver.

Uses a gas discharge display for frequencies and a row of lights (instead of mechanical needles) to show VOR/LOC deviations. Operational Characteristics

The unit is unique because it shares internal circuitry between navigation and communication functions. Users must toggle between modes; it cannot receive a VOR signal while the pilot is transmitting or receiving on a COM frequency. This design was intended to save weight and space in cockpits where panel real estate was limited. Key Features Frequency Storage:

Includes the ability to preset frequencies for quicker transitions between ATC sectors. Solid-State Design:

Replaced older tube-based technology, offering better reliability in the high-vibration environment of a small airplane. Integrated Indicator:

Unlike many radios of its era that required a separate external head to show navigation data, the Escort II built the VOR/LOC indicator directly into the face of the radio using LED-style lighting. Historical Context

Produced primarily in the 1970s and 80s, the Narco Escort II became a staple in the experimental and light general aviation communities. While many have since been replaced by modern GPS-integrated units, they remain a notable example of efficient analog avionics engineering.

For those looking to maintain or install such equipment, consulting with a certified avionics technician or an FAA-certified repair station is necessary to ensure compliance with aviation safety regulations and to verify that the specific airframe can support the electrical load and antenna requirements. Escort-II VOR / LOC Indicator / NAV/COMM - Bennett Avionics

Narco Escort II Installation Manual is a vital technical document for aircraft owners and technicians maintaining or installing this legacy Nav/Comm radio. Known for its unique gas discharge display and row-of-lights VOR/LOC indicator, the Escort II requires precise wiring and site preparation for reliable performance. Bennett Avionics Manual Content Overview

A full version of the installation manual typically covers the following critical sections: Wiring and Pinouts : Detailed schematics for the P301 rear connector

, including specific audio output ratings (50 mW across 300 ohms) and intercom key functions. Step-by-Step Installation

: Guidance on unpacking, site preparation, and mounting the unit within the instrument panel. Antenna Requirements

: Instructions for installing dual dipole antennas, including guidance on grounding and avoiding signal "holes" in reception patterns. Calibration and Testing

: Procedures for initial setup, system software diagnostics, and critical calibration to ensure navigation accuracy. www.api.motion.ac.in Technical Highlights & Considerations Intercom Capabilities : The manual details how to ground

to use the built-in intercom function, allowing microphone audio to bypass the transmitter. Environmental Specifications

: It lists tolerance levels for altitude, vibration, and magnetic effects, noting that the unit is designed for standard aircraft electrical systems. Legacy Support

: While the manual is comprehensive, users often report that official factory support for Narco radios is slow and expensive, making the manual essential for independent or third-party repairs. AeroElectric Pros and Cons of the Documentation narco avionics escort ii - AeroElectric