Narco Escort Ii Installation Manual — Full

The Escort II expects parallel Gillham Gray code (standard for 1970-2000 encoders). It is NOT compatible with RS-232 or ARINC 429 without a converter.

If your aircraft has a modern encoder (e.g., ACK A-30), you must wire pins 4 through 12 directly. The manual includes a truth table for altitudes from -1000 to +35,000 feet. A mis-wired encoder is the #1 cause of "Mode C" failures on ramp checks.

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.

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

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Narco Escort II Installation Manual Full

Table of Contents

Introduction

Congratulations on purchasing the Narco Escort II, a state-of-the-art navigation and communication system designed for the discerning aviator. This manual will guide you through the installation process, ensuring a smooth and efficient setup.

Safety Precautions

Before beginning the installation, please read and understand the following safety precautions:

Package Contents

Installation Steps

Configuration and Testing

Troubleshooting

Warranty and Support

The Narco Escort II is covered by a limited warranty. For support, please contact our customer service department or visit our website. narco escort ii installation manual full

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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.

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

If "Narco Escort II" refers to a specific piece of software, hardware, or a device used in a particular industry (like agriculture, navigation, etc.), it would be best to consult the official manual or contact the manufacturer directly for the most accurate and detailed instructions.

NARCO II Installation Manual: Enhancing Your Lifestyle and Entertainment

The NARCO II system is a comprehensive entertainment and communication solution designed for boats and yachts. To ensure seamless integration and optimal performance, it's essential to follow the installation manual carefully.

Pre-Installation Checklist

Before starting the installation process, make sure you have:

Installation Steps

Configuration and Testing

Lifestyle and Entertainment Features

The NARCO II system offers a range of features to enhance your onboard lifestyle and entertainment experience:

Support and Resources

For more information, technical support, and software updates, please visit our website or consult the user manual. The Escort II expects parallel Gillham Gray code

By following this installation manual, you'll be able to enjoy a seamless and enhanced entertainment experience on your boat or yacht.

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 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 Installation Manual: A Comprehensive Guide The Narco Escort II remains a legendary "all-in-one" avionics solution for many general aviation pilots. Combining a COM radio, NAV receiver, and VOR/LOC indicator into a single panel-mounted unit, it was a masterpiece of space-saving design.

If you are looking to install or reinstall this classic unit, following the original technical specifications is critical for both safety and legal compliance. 1. Pre-Installation Requirements

Before sliding the unit into the panel, ensure your aircraft's electrical system is ready.

Voltage: The Escort II is typically a 14VDC unit. Ensure your bus voltage is stable.

Circuit Protection: A 5-amp circuit breaker is standard for this installation.

Cooling: While the Escort II is relatively efficient, ensure there is adequate airflow behind the stack to prevent heat soak, which can drift frequency stability. 2. Physical Mounting The Escort II uses a standard lateral mounting tray.

Panel Cutout: The unit requires a standard 6.25-inch wide radio rack opening.

Depth: Allow at least 11 inches of depth behind the panel to accommodate the unit, the rear connector, and the cable service loop.

Securing: Use the specialized Narco locking hex-wrench tool to tighten the internal cam-lock. Do not over-tighten, as this can warp the mounting frame. 3. Wiring and Pin Assignments Support and Resources For more information

The heart of the installation is the rear 15-pin (or 24-pin, depending on the specific Mod) Molex-style connector. Standard Pinout Highlights: Pin 1 & 2: Ground Pin 3: +14VDC Power Input Pin 4: Pilot Mic Input Pin 5: Speaker Output (usually 4 or 8 ohms) Pin 6: Phone/Headset Output

Pins 10-12: Typically reserved for external VOR/LOC needle outputs if connecting to an external CDI.

Note: Always verify your specific unit's Mod level against the wiring diagram on the chassis sticker, as Narco made slight variations during production. 4. Antenna Connections

The Escort II requires two distinct antenna inputs via BNC connectors:

COM Antenna: A standard 50-ohm VHF whip antenna. Ensure the VSWR is less than 3:1 for optimal transmission.

NAV Antenna: A "V" or "T" style dipole antenna. If you are sharing this antenna with another NAV radio, you must use a signal splitter (diplexer) to avoid signal loss. 5. Post-Installation Testing Once wired, perform the following checks:

Dimming: Verify the internal lamps dim correctly with the aircraft's lighting bus.

Squelch: Test the "Pull-for-Squelch" feature to ensure clear audio.

VOR Accuracy: Using a VOR Test Facility (VOT) or a known ground checkpoint, verify the bearing accuracy is within ±4 degrees.

Ground Comm Check: Contact a nearby FBO or Tower to confirm transmission clarity and signal strength. 6. Regulatory Compliance

In the United States, an installation of this nature requires an entry in the aircraft logbooks. If this is a new installation (rather than a "plug-and-play" replacement), an FAA Form 337 for Major Repair and Alteration may be required, along with an updated Weight and Balance report.

Disclaimer: Avionics installation should be performed or supervised by a certified A&P mechanic or an FAA-approved radio shop. Improper wiring can lead to electrical fires or loss of critical navigation equipment.

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 installation manual details a self-contained, all-in-one Nav/Com unit, offering a simplified installation process popular among vintage and experimental aircraft operators. The documentation covers Molex connector wiring, specific audio pinout configurations, and the required dual dipole antenna setup, while noting the need for periodic calibration of the gas discharge indicator. For the full pinout diagram, visit AeroElectric AeroElectric narco avionics escort ii - AeroElectric

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Subject: Narco Escort II Installation Manual Document Status: Full Manual Analysis Date: October 26, 2023