Ultra-low frequency antennas (30300Hz) are extremely rare and are mainly used in professional scientific research and military fields, with limited choices of commercial products. Recommended antennas categorized by frequency range:
Professional-grade Ultra-Low Frequency Antennas
Aaronia Magnotracker ELF6
Frequency range: 1Hz-9kHz, covering ultra-low frequency to very low frequency range
Key features: Built-in 25dB preamplifier, high gain design, SMA interface
Applications: Scientific research monitoring, electromagnetic environment detection
Reference price: Not available on e-commerce platforms
Low Frequency Antenna Alternatives
315MHz Band Antennas
Takstar TSAD315 Directional Antenna: Covers 300-330MHz, features high front-to-back ratio, interference suppression, and waterproofing.
315MHz Little Pepper External Antenna: 5cm omnidirectional gain design, with SMA to IPEX cable, suitable for car remote control, smart home, etc.
Automotive-Specific Low Frequency Antennas
Changan Series Original Low Frequency Antenna: Compatible with CS75, CS55, Eado, etc., priced at ¥96.99-¥158.99. Baojun Series Vehicle Remote Control Antenna: Compatible with 510, 310W, 560, etc., priced at 113.50 yuan.
700-1050MHz Spiral Antenna
Technical Features: Spiral phase compensation technology, 5.5dBi vertical gain, IP67 waterproof
Application Scenarios: 5G IoT, emergency communication, digital TV
Advantages: Miniaturized design, strong anti-multipath interference capability
100-200MHz Clover Omnidirectional Antenna
Structural Design: Four-leaf planar layout, 360° horizontal omnidirectional coverage, ±30° vertical beamwidth
Performance Advantages: 57dBi gain, circular polarization anti-interference design
Application Scenarios: UAV FPV, industrial inspection, emergency communication
Purchase Recommendations
Professional Research Needs: Contact university research institutions or professional antenna manufacturers for customization.
Alternative Solutions: Choose 315MHz or 700-1050MHz band antennas according to the application scenario.
Automotive Applications: Choose the original low-frequency antenna for the corresponding vehicle model. IoT projects: Consider a 700-1050MHz helical antenna or a 100-200MHz cloverleaf antenna.