Antenna COALAS::DIPOLE-SMA-370-530

Model: COALAS::DIPOLE-SMA-370-530. Type: Dipole antenna with notches for resonant frequency tuning. Manufacturer: Coalas systems. Category: Antennas > Dipole Antennas. Product ID: 17294.

Description and Purpose

The lightweight and compact COALAS::DIPOLE-SMA-370-530 dipole antenna is designed for operation in the 370–530 MHz range and is intended for applications where quick and precise tuning of the resonant frequency is important. The notched design allows for gradual adjustment of the radiator length by cutting along the notches, making the antenna versatile for amateur, industrial, and professional tasks. It ensures stable reception and transmission in the specified range and is easy to mount on both portable and stationary equipment.

Technical Specifications

• Frequency range: 370 MHz – 530 MHz (when cut along notches).
• Resonant frequencies, MHz: 380 (full) / 400 [1] / 420 [2] / 440 [3] / 460 [4] / 480 [5] / 500 [6] / 520 [7].
• Bandwidth: 20 MHz (VSWR < 1.5).
• Gain: 2 dBi.
• Connector: SMA Male + RG402 cable (110 mm).
• Dimensions: 350 mm × 10 mm.
• Weight: 20 g.

All listed parameters comply with the factory specifications of the manufacturer Coalas systems and allow for quick and precise adaptation of the antenna to the required operating frequency by cutting along the convenient notches.

Advantages and Usage Recommendations

The antenna features low weight (20 g) and compact dimensions (350×10 mm), which facilitates mounting on portable equipment or stationary structures. The presence of a high-quality RG402 cable with a length of 110 mm and an SMA Male connector ensures a reliable connection to most transceivers with a compatible connector. A gain of 2 dBi makes it an optimal choice for local applications in the specified frequency range. It is recommended to cut along the notches gradually and test VSWR parameters after each step to achieve the desired resonant frequency without disrupting antenna matching. Before installation, be sure to check the compatibility of the SMA Male connector and RG402 cable parameters with your receiver or transmitter.

An additional product image is available at the link: https://flasharmy.com.ua/image/catalog/01.06.2025/2/45-dipole.jpg

The COALAS::DIPOLE-SMA-370-530 antenna is ideal for users seeking a simple, reliable, and tunable solution in the 370–530 MHz range: it combines the practicality of a classic dipole design with the ability to quickly tune to a specific operating frequency, ensuring optimal VSWR parameters and operating bandwidth in accordance with Coalas systems factory requirements.

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