Elsema 433S-N Helical Whip Antenna – 433MHz (Antenna Only)

The Elsema 433S-N is a high-performance, ground-independent helical whip antenna designed for demanding wireless communication systems operating in the 433MHz band. With a robust 38cm length and a gain of 4.5dBi, this antenna delivers superior range and signal reliability, making it ideal for industrial automation, telemetry, and remote-control applications.

Engineered with a high-grade N-connector at the base, the 433S-N allows for quick and secure connection or disconnection of the whip antenna, providing greater flexibility for installation and maintenance. The rugged molded flexible rubber (Polyolefin) construction ensures long-lasting durability, even in harsh outdoor conditions.

Featuring an omni-directional radiation pattern for 360° coverage, this antenna maintains strong, consistent communication in all directions, while its low VSWR (<1.5:1) ensures minimal signal loss and optimal performance across a 17.5MHz tuned bandwidth.

Key Features:

• Tuned to the 433MHz Band – Operates efficiently between 425.00–442.50MHz.
• High-Grade N-Connector – Easily detachable whip for quick installation or replacement.
• High Gain Performance – 4.5dBi gain enhances signal strength and communication range.
• Ground Independent Design – No ground plane required for installation flexibility.
• Durable Construction – Molded flexible rubber (Polyolefin) ensures strength and impact resistance.
• Omni-Directional Radiation Pattern – Provides consistent 360° signal coverage.
• Low VSWR (<1.5:1) – Optimises power transfer and reduces signal reflection.
• High Power Handling – Supports up to 25 Watts of input power.

Applications:

Ideal for long-range remote control systems, industrial telemetry, wireless security systems, and general-purpose 433MHz RF communication where robust performance and durability are critical.

Compatibility:

Click here to purchase the Elsema ANT433S Antenna	Click Here to Purchase the AB1.5SMA Coaxial Cable 1.5M Length	Click Here to Purchase the AB3.6SMA Coaxial Cable 3.6M Length
Click Here to Purchase the AB5.0SMA Coaxial Cable 5m Length	Click Here to Purchase the AB10.0SMA Coaxial Cable 10m Length

Please Note: This item is not always held in stock. It will be ordered directly from the manufacturer once your order has been placed and paid for in full. Dispatch from our warehouse will generally occur within 2–10 business days. Please contact us directly to find out the current estimated time of arrival (ETA)—we’re happy to assist you!