ATR-FSM Handheld Field Strength Meter 0.5MHz-5GHz +50dBm ~ -70dBm Gain Attenuation Switch Portable Electromagnetic Signa

1 Lightweight Casing Version 2 CNC Casing VersionOverview The FSM is a professional handheld field strength meter It is designed for radio enthusiasts antenna tuning engineers interference troubleshooting specialists electromagnetic environment assessors and any user wishing to visually observe electromagnetic fields Compact and portable the device offers a professional and intuitive experience for measuring field strength Key features include wide frequency band coverage a broad measurement range intelligent data logging capabilities and extreme portability This device supports a wide variety of application scenarios offering enhanced versatility it can be used to measure antenna reception signal strength compare the reception performance of different antennas test the radiation intensity of transmitters verify the actual radiation characteristics of antennas and measure the polarization direction of receiving antennas at various spatial positions and angles Key Selling Points 1 Wide Field Strength Measurement Range Covering Both Strong and Weak Signals Features built in hardware level attenuation 20x and gain 20x switching In attenuation mode it supports input levels up to 49 dBm without signal saturation or distortion In gain mode it can detect signals as low as 115 dBm It is capable of measuring milliwatt level devices in the UHF VHF bands multi watt transmitter systems and complex electromagnetic environments in the HF band This