Hybrid J-Pole antenna 2.5dbi 868/ 900/ 915 mhz

Hybrid J-Pole Antenna – Classic Design Reimagined for 868 ( or 900 or 915) MHz

The J-Pole antenna is a time-tested design in the world of radio communication. Originally derived from a half-wave dipole with a quarter-wave matching stub, this type of antenna has proven to be both reliable and effective for decades. Our modern take on this classic merges trusted RF principles with materials engineered for today’s demanding applications.

868 MHz Hybrid J-Pole Antenna

• Built Tough. Tuned Right. Engineered for Reliability.

  When your 868 MHz applications—LoRa, telemetry, FPV, or IoT—demand consistent long-range performance, antenna choice matters. The Hybrid J-Pole 868 MHz delivers robust signal integrity, omnidirectional coverage, and a ruggedized design that rivals high-end alternatives like the TrueRC Bardpole.

  This isn’t just another J-Pole clone. It’s a refined, field-proven antenna with durable construction and precision tuning for real-world conditions.

  Why a J-Pole?

  The J-Pole’s half-wave dipole + quarter-wave stub design is a staple in radio for good reason:

  ✔ Self-Matching Impedance
  The stub naturally transforms the dipole’s ~70 Ω impedance to a clean 50 Ω match—no extra baluns or matching circuits needed.

  ✔ True Omnidirectional Pattern
  Uniform horizontal coverage ensures stable signals for UAVs, ground stations, and moving platforms.

  ✔ Wide Bandwidth
  Stays under 1.5:1 VSWR across 20+ MHz, handling frequency shifts without retuning.

  ✔ No Ground Plane Needed
  Skip the radials—this antenna works anywhere without detuning from nearby metal.

  Hybrid Durability Meets RF Performance

  We’ve taken the J-Pole’s efficiency and made it practically indestructible:

  • Radiator: Flexible PVC-coated spring steel—bends, not breaks.

  • Stub: Precision FR4 PCB with optimized trace geometry.

  • Connector: SMA-F (soldered, not crimped).

  • Weight: Just 12–14g—ideal for drones and portable setups.

  Each unit is hand-tested on a VNA for optimal 868 MHz resonance.

  Key Specs

  Parameter	Value
  Frequency Range	868 MHz ±10 MHz
  Bandwidth	>20 MHz (RL < -13 dB)
  VSWR	<1.2 @ 868 MHz
  Gain	~2.5 dBi
  Polarization	Vertical
  Connector	SMA-F

  Versatile Configurations

  • Ultra-Short (4cm stub): For tight spaces (e.g., drone stacks).

  • Short (6cm stub): Stiffened for UAV telemetry.

  • Long (1m RG316D): Flexible cable for fixed setups.

  vs. Bardpole

  While the Bardpole is excellent, our Hybrid J-Pole offers:

  • Similar or better RF performance 

  • Custom cable/connector options.

  • No batch inconsistencies—each is individually tuned.

  Who Needs This?

  • LoRa gateways needing uptime.

  • FPV pilots (ExpressLRS/868 MHz control).

  • Search & rescue trackers.

  • Industrial IoT in harsh environments.

  • HAMs experimenting with 868 MHz.

  Bottom Line

  This isn’t a flimsy whip antenna—it’s a professional-grade tool for mission-critical RF. If 868 MHz is your band, the Hybrid J-Pole deserves a spot in your kit.

Compared to the Bardpole

Many users love the Bardpole — and for good reason. But this Hybrid J-Pole offers:

• Comparable or better tuning and bandwidth

• Better customization: cable length, connector type

• Competitive weight and size, optimized for FPV and telemetry

• Individually tuned — no batch variance