cdsenet
Cdsenet TX490-JKD-20 490MHz 3.0dBi Flexible SMA-J Male Antenna
Cdsenet TX490-JKD-20 490MHz 3.0dBi Flexible SMA-J Male Antenna
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SKU:tx490-jkd-20
Product Overview
The TX490-JKD-20 is a professional-grade 490MHz omnidirectional foldable rod antenna, engineered for high-stability Sub-GHz wireless communication. Featuring a 3.0 dBi peak gain and a precision-tuned radiator, it significantly enhances signal range and penetration. Encased in a flexible, high-toughness TPEE material with a 90-degree adjustable knuckle, it ensures reliable performance for industrial IoT and smart metering systems.
Technical Specifications
| Parameter | Technical Value |
|---|---|
| Frequency Range | 470 - 510 MHz (Center: 490MHz) |
| Peak Gain | 3.0 dBi |
| VSWR | ≤ 1.5 |
| Connector Type | SMA-J (SMA Male) |
| Antenna Height | 200 mm (Straight) |
| Radome Material | TPEE (Flexible) |
| Impedance | 50 Ω |
| Polarization | Vertical |
Product Details
Foldable & Rotatable Design
The antenna features a flexible knuckle that allows for 90-degree folding and 360-degree rotation, making it easy to adjust for optimal signal reception in confined spaces.
Standard SMA-J Interface
Made of pure copper with gold-plated pins, the SMA-J interface ensures low insertion loss and high-frequency signal integrity for long-term use.
Professional Test Report
Verified with Agilent E5071C: VSWR performance is optimized at ≤ 1.5 across the 490MHz band.
Ideal Applications
LoRa & Sub-GHz IoT
Ideal for LoRaWAN gateways, remote sensors, and data acquisition terminals.
Industrial Automation
Reliable wireless telemetry for smart grids, agriculture, and water monitoring.
Resources
📄 Download Datasheet (PDF)FAQ
Q: Can this antenna be used for 433MHz devices?
A: This antenna is specifically tuned for 470-510MHz. For 433MHz, performance may decrease; we recommend using a dedicated 433MHz antenna.
Q: Is the interface waterproof?
A: While the TPEE material is durable, the SMA interface is not inherently waterproof. For outdoor rain exposure, additional sealing is recommended.