# 433MHz helical antenna

> The 433MHz helical antenna is a compact RF antenna for applications at 433MHz. It offers a gain of 2.2 dBi, an impedance of 50 ohm, and supports a maximum power of 30 dBm. With a diameter of 5mm, it is suitable for integration into small devices and enclosures, compatible with common RF modules at this frequency.

- Page: https://sigmanortec.ro/en/433mhz-helical-antenna
- Price: 3.03 RON
- Availability: In stock; 1-2 zile
- Reference: 22176 · EAN: 5947861273837
- Category: Mechatronics and IoT > Sensors and Modules > Antennas
- Package (shipping data): 0.003 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 02:21 (Europe/Bucharest)

## Description

Ideal for improving reception and transmission at 433MHz in compact RF applications, it offers 2.2 dBi gain for more stable signal, 50 ohm impedance for easy matching with common modules, supports up to 30 dBm, 5 mm diameter for easy integration into small equipment and housings.
Helical antenna with increased gain.
Frequency: 433MHz
Gain: 2.2 dBi
Impedance: 50 ohms
Maximum power: 30 dBm
Diameter: 5mm