Hybrid J-Pole antenna 2.5dbi 1240Mhz

1240 MHz Hybrid J-Pole Antenna

Compact. Durable. Precisely Tuned. Now in Three Cable Lengths.

The 1240 MHz Hybrid J-Pole Antenna delivers high-performance RF transmission in a compact, mechanically robust design. Combining the trusted efficiency of the J-Pole configuration with modern materials, it provides reliable omnidirectional coverage in the 1240–1260 MHz L-band range — essential for telemetry, FPV, drone communication, and mobile RF platforms.

What Makes This Antenna Special?

This is not just a classic J-Pole — it's a hybrid evolution, engineered with:

• FR4 PCB stub for precise impedance matching

• Steel wire radiator, PVC-coated for strength and flexibility

• Hand-tuned performance to achieve peak efficiency at 1240 MHz

• Omnidirectional radiation in the horizontal plane

The result? Excellent VSWR (<1.15), ~2.2 dBi gain, and minimal signal loss in real-world conditions.

Technical Specifications

Available Versions

Ultra-Short (4 cm RG402)

• For extremely tight integration

• Ideal for mini FPV drones, cube-shaped modules, or systems with minimal internal clearance

• Maintains rigid shape, resistant to vibration and deformation

Short (6 cm RG402)

• Perfect for medium-sized drones, compact ground units, or robotics

• Rugged and semi-rigid — great balance of size and durability

Long (1 m RG316D)

• Flexible cable for versatile mounting

• Suited to ground stations, mobile poles, or longer-range telemetry setups

Use Cases

• FPV drone systems (analog & digital 1.2 GHz video links)

• UAV telemetry and command/control systems

• Portable ground stations

• Industrial IoT and sensor backhaul

• L-band amateur radio experiments

• Emergency or tactical communication kits