Hybrid J-Pole Antenna – FR4 Laminate & Steel Wire Construction

High-Performance, Durable UHF Antenna for Demanding Applications

Product Overview

Engineered for reliability in challenging environments, this hybrid J-pole antenna combines advanced materials with precision RF design. The robust construction features an FR4 laminate base paired with a high-tensile steel wire radiator, protected by a durable PVC coating. This unique design delivers exceptional electrical performance while resisting mechanical stress, making it ideal for drones, mobile communications, and field deployments where durability matters.

Unlike conventional antennas, this model requires no ground plane, simplifying installation on non-metallic surfaces like drone frames or composite enclosures. Its carefully tuned impedance matching ensures maximum power transfer with minimal loss, outperforming many traditional J-pole designs.

Key Features & Advantages

1. Rugged Hybrid Construction

• FR4 Laminate Base: Provides stable dielectric properties and structural support in varying weather conditions.

• Galvanized Steel Wire Radiator (PVC-Coated): Reinforced for impact and vibration resistance—critical for UAVs, vehicles, and portable setups.

2. Optimized RF Efficiency

• VSWR <1.1 at 750 MHz (factory-tuned center frequency).

• 20 MHz usable bandwidth with return loss exceeding –13 dB for consistent signal integrity.

• Omnidirectional radiation pattern with ~2.5 dBi gain, ensuring reliable coverage in all directions.

3. Flexible Deployment Options

• No Ground Plane Required: Self-contained matching network eliminates the need for additional grounding.

• Two Cable Configurations Available:

  • Stub Version (6 cm RG402 Semi-Rigid Coax): Compact and rigid for direct mounting on drone frames or PCBs.

  • Extended Version (1 m RG316D Coax): Flexible routing for ground stations, enclosures, or vehicle installations.

Technical Specifications

Ideal Use Cases

✓ UAV & Drone Applications

• Long-range UHF control links (ExpressLRS, TBS Crossfire, Ghost)

• Redundant telemetry for GPS and RC systems

• Low-profile tracking antennas for search/rescue drones

✓ Professional & Amateur Radio

• Public safety (police/fire/EMS communications)

• Ham radio (70 cm band) and GMRS repeaters

• Portable field radios requiring lightweight, high-performance antennas

✓ Industrial & Mobile Installations

• Telemetry for remote sensors and IoT devices

• Marine and vehicle-mounted systems where durability and signal clarity are critical

Customization & Ordering Options

 Frequency-Specific Models Available

• Standard Bands: 433 MHz, 868 MHz, 915 MHz (ISM/LoRa)

• Custom Tuning: 415 MHz, 446 MHz, 650–770 MHz, and other frequencies upon request. MOQ - 50 pcs for custom orders.

Each unit is individually tested to ensure compliance with specified RF performance metrics.

Why This Antenna Stands Out

✔ Engineered for harsh environments—unlike fragile copper designs.
✔ Superior impedance matching for maximum efficiency.
✔ Two cabling choices to fit different mounting needs.
✔ No ground plane required—easier integration than dipole alternatives.

Contact us for bulk pricing or custom frequency requirements.

Final Notes

This antenna is not a mass-produced commodity—each is tuned and verified for optimal performance. Whether for FPV drones, emergency communications, or industrial telemetry, this hybrid J-pole delivers reliable signal integrity where lesser antennas fail.