Overview

The TOXU TX-490uH-70 is a passive ferrite rod antenna designed for AM medium-wave radio reception within the 530-1600kHz frequency range.

The antenna combines a ferrite core with a copper-wire winding to receive the magnetic-field component of medium-wave broadcast signals. It is suitable for integration into compatible AM radio receivers, vintage-style radios, audio equipment, educational electronics, and embedded radio-reception products.

The TX-490uH-70 provides a specified inductance of 490μH ±5% and uses solder pads for direct electrical connection to the receiver circuit. Its compact 4 × 13 × 70mm structure supports internal installation in equipment with limited available space.

As a passive receiving component, the antenna does not contain an amplifier or require a separate power supply. Final reception performance depends on the antenna matching circuit, receiver sensitivity, product enclosure, installation orientation, nearby metal parts, internal interference, and local AM signal conditions.

Custom inductance, winding, ferrite-core dimensions, solder-terminal structure, and related configurations can be evaluated according to the customer’s receiver circuit and volume-order requirements.

Key Features

530-1600kHz Medium-Wave Reception

Designed for compatible AM radio receivers and electronic equipment operating within the specified medium-wave broadcast frequency range.

490μH ±5% Inductance

Provides the specified inductance value for integration with a compatible AM receiver input and tuning circuit.

Ferrite-Core Structure

Uses a ferrite core and copper-wire winding to receive the magnetic-field component of medium-wave radio signals.

Passive Operation

The antenna operates without an integrated amplifier or separate external power supply.

Compact Internal-Mount Design

The approximately 4 × 13 × 70mm structure is intended for installation inside compatible radio receivers and electronic equipment.

Solder-Pad Connection

The electrical terminals support soldered integration with the matching network or AM receiver circuit.

Project Customization Support

Inductance, winding parameters, ferrite-core dimensions, terminal structure, and packaging can be evaluated according to project requirements and order quantity.

Technical Specifications

Applications

• AM Medium-Wave Radio Receivers

• Tabletop and Vintage-Style Radios

• Portable Radio Equipment

• Embedded AM Receiver Products

• Consumer Audio Equipment

• Educational Electronics Projects

• Radio Receiver Development Boards

• Traditional Broadcast-Receiving Equipment

• Customized Medium-Wave Receiver Systems

System Integration

The TX-490uH-70 can be integrated into a compatible AM radio-reception system using the following configuration:

TX-490uH-70 Ferrite Rod Antenna → Matching or Tuning Circuit → AM Receiver IC → Audio Amplifier → Speaker

Before ordering, confirm whether the specified 490μH inductance is compatible with the receiver IC, tuning capacitor, matching network, and target AM frequency range.

The antenna should be installed away from switching power supplies, digital processors, display cables, motors, transformers, high-current wiring, and other components that may generate electromagnetic interference.

Nearby metal enclosures, batteries, shielding plates, PCB ground areas, and loudspeaker magnets may detune the antenna or reduce signal reception. The final mounting position should therefore be evaluated inside the complete device.

Ferrite rod antennas have directional reception characteristics. Rotating the equipment or changing the antenna orientation may affect the received signal level and can help reduce interference from an unwanted direction.

Sample testing with the actual receiver circuit, tuning components, enclosure, PCB layout, power supply, installation position, and intended operating environment is recommended before volume ordering.

Why Choose TOXU

TOXU supplies AM and FM antennas, GNSS antennas, cellular antennas, Wi-Fi antennas, UHF and VHF antennas, internal antennas, RF cable assemblies, coaxial connectors, communication modules, and receiver hardware for equipment manufacturers and system integrators.

Our team can assist with antenna selection, inductance confirmation, structural evaluation, receiver-circuit integration, sample preparation, and RF performance verification.

For volume-order projects, TOXU can evaluate customized inductance values, ferrite-core dimensions, coil windings, solder-terminal structures, labels, and packaging.

With IATF16949 and ISO9001-certified manufacturing capabilities, TOXU supports antenna production, RF testing, quality control, customized assembly, and stable volume-order delivery.

FAQ

Q: What type of antenna is the TX-490uH-70?

A: It is a passive ferrite rod antenna designed for AM medium-wave radio reception.

Q: What frequency range does it support?

A: It is designed for compatible AM receiver applications operating within 530-1600kHz.

Q: What is the antenna inductance?

A: The specified inductance is 490μH with a tolerance of ±5%.

Q: Does the antenna require power?

A: No. It is a passive antenna without an integrated amplifier or separate power-supply requirement.

Q: Is it an external radio antenna?

A: No. The TX-490uH-70 is designed for internal installation and soldered integration with a compatible AM receiver circuit.

Q: Can it be connected directly to any AM radio circuit?

A: Not necessarily. The inductance and antenna structure must be compatible with the receiver IC, tuning capacitor, matching network, and target frequency range.

Q: Why does the installation position matter?

A: Metal parts, batteries, digital circuits, switching power supplies, motors, and other components may detune the antenna or introduce electromagnetic interference.

Q: Is the antenna directional?

A: Ferrite rod antennas have directional reception characteristics. Reception may change when the antenna or complete receiver is rotated.

Q: Can the inductance and dimensions be customized?

A: Yes. Inductance, winding parameters, ferrite-core dimensions, terminal structure, and packaging can be evaluated according to project requirements and order quantity.

Q: Is sample testing recommended?

A: Yes. Testing should be completed with the actual receiver circuit, enclosure, PCB layout, power supply, tuning components, and final installation position before volume ordering.