930-3001-001 - Honeywell OEM DA1B Dual Drive Antenna

930-3001-001 – Honeywell OEM DA1B Dual Drive Antenna

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Overview

The Honeywell 930-3001-001 is a flight-critical, OEM VOR / Localizer / Glideslope navigation antenna, an essential sensor for the instrument flight systems of a wide range of business and commercial aircraft. This is not a simple antenna; it is a highly engineered, multi-element assembly designed to receive signals for three separate, critical navigation functions. The 930-3001-001 (often referred to by its model designation, DA1B) provides the high-integrity radio frequency (RF) signals required by the aircraft's navigation receivers to execute both en-route navigation via VORs and precision instrument approaches via an ILS.

As a genuine Honeywell component, this antenna is built to the most stringent aerospace standards for performance and reliability. Its aerodynamic design and robust construction ensure flawless signal reception in all flight conditions, which is fundamental to the safety and precision of instrument flight.

Key Features

• Integrated Multi-Function Reception: A single, aerodynamically clean housing contains separate, optimized antenna elements for three distinct navigation bands:

  1. VOR (VHF Omnidirectional Range): For en-route and terminal navigation.

  2. Localizer (LOC): For lateral (left/right) guidance on an ILS approach.

  3. Glideslope (G/S): For vertical (up/down) guidance on an ILS approach.

• Balanced Loop "Cat Whisker" Design: The VOR/Localizer element is a classic "cat whisker" or V-dipole balanced loop design. This provides the horizontally polarized, omnidirectional reception characteristics required to receive accurate VOR and Localizer signals from any direction relative to the ground station.

• Aerodynamic & Structurally Robust: The antenna elements are encapsulated in a rugged, low-drag fiberglass housing, designed to withstand the high airspeeds and harsh environmental conditions of high-altitude flight, including temperature extremes and fluid exposure.

• High-Performance Signal Integrity: Engineered with precision phasing and impedance matching to provide the cleanest possible signal to the navigation receivers with a low Voltage Standing Wave Ratio (VSWR), which is essential for accurate course deviation indications.

• TSO Certified: Fully certified to the stringent requirements of multiple FAA TSOs, including TSO-C34e (ILS Glideslope), TSO-C36e (ILS Localizer), and TSO-C40c (VOR), ensuring it meets the highest standards for performance and reliability.

Technical Specifications

• Part Number: 930-3001-001

• Model Designation (Typical): DA1B

• Component Type: VOR / Localizer / Glideslope Navigation Antenna

• OEM Manufacturer: Honeywell Aerospace

• Frequency Bands:

  • VOR/Localizer: 108.00 - 117.95 MHz

  • Glideslope: 329.15 - 335.00 MHz

• Polarization: Horizontal

• Impedance: 50 Ohms

• Connectors: Typically features separate BNC or TNC connectors for the VOR/LOC and Glideslope outputs.

• Certification: FAA TSO-C34e, TSO-C36e, TSO-C40c

Aircraft Compatibility

The Honeywell 930-3001-001 is a standard OEM navigation antenna on a wide range of business jets, regional airliners, and high-performance turboprops. It is imperative to consult the specific aircraft's Illustrated Parts Catalog (IPC) for final verification.

• Common Aircraft Platforms:

  • Bombardier: Challenger, Global, and CRJ series

  • Dassault Falcon

  • Gulfstream

  • Embraer

  • Textron Aviation (Cessna Citation & Hawker)

Why Choose 930-3001-001?

The ability to precisely navigate and conduct instrument approaches is the most fundamental requirement of IFR flight. The aircraft's navigation receivers are only as good as the signal they receive from the antenna. The Honeywell 930-3001-001 is the genuine, certified component designed and tested to provide the highest possible signal integrity for three critical navigation functions. Using a certified OEM antenna is the only way to ensure the unit has the correct reception patterns and performance characteristics required for safe and accurate instrument navigation.

The Honeywell 930-3001-001 is an example of sophisticated RF engineering. The VOR/Localizer reception is handled by the two external "cat whisker" elements. These form a balanced V-dipole antenna. The "V" shape is a compromise that allows the horizontally polarized elements to have good sensitivity to signals coming from in front of the aircraft (for Localizer reception) as well as from the sides (for VOR reception). The Glideslope antenna is typically a separate, smaller dipole element hidden within the antenna's base or mast. It is specifically tuned and oriented to receive the horizontally polarized UHF signals from a glideslope transmitter, which are broadcast at a much higher frequency than VOR/LOC signals. A diplexer or signal splitter is often used to route the different frequency bands from the single antenna assembly to the separate inputs on the navigation receiver.

Note: This is a flight-critical avionics component. Installation, sealing, and testing must be performed by a certified AME or avionics technician in strict accordance with the current aircraft maintenance manual. Proper bonding of the antenna to the airframe is essential for performance and lightning protection.