1. Compact and : This device features an power supply design, eliminating need for batteries. It's perfect for outdoor enthusiasts and portable use with hf short wave standing wave meter. 2. LED Signal Indication: Utilizing six LEDs, this stand wave meter displays power strength and swr range of signals, helping users assess and adjust signal quality effectively. 3. Wide Frequency Range: Designed to -to-noise ratio for frequencies between 3-30MHz, the shortwave hf pwr power tester supports varying shortwave radio equipment with input power not exceeding 12W. 4. Versatile Applications: Commonly used in radio broadcasting and communication systems, the hf shortwave power swr meter assists operators in optimizing radio equipment settings for improved signal quality. 5. Easy to Use: With no adjustable components needed, this device works correctly when connected properly, featuring clear IN ( IN) and OUT ( OUT) connection points for efficient operation. Mini Power SWR Meter 3-30MHz HF Short Wave Standing Wave Meter Digital 12W Shortwave HF PWR Power Tester HF Shortwave Power SWR Meter Electrical Instruments Name: SWR meter Frequency: 3- 30mhz Maximum measured power: nominal 10W, actual measurement 12W Minimum measured power: 0.5W Interface: BNC Maximum short-term power at full SWR meter resolution: 7W Current drawn from transceiver to power circuit: 1.2mA Color: Black Material: ABS Package Contents: 1 set * Mini Power SWR Meter Set Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.