Features COMPATIBILITY: SDR receiver supports R9 version for One and for H2 R4 version for Portapack H2. The for Portapack H2 comes with the for Mayhem firmware, ensuring compatibility and firmware updates in sync with official releases. 1 BUTTON COMMUNICATION: This intelligent radio receiver is equipped with a 3.5mm sound jack from for Portapack, allowing it to serve as a standard configuration. Enjoy 1 button communication with voice walkie talkie functionality. ACCURATE TUNING: The USB SDR radio receiver utilizes PPM calibration for more accurate tuning and stable performance. It is incredibly easy to use, providing peace of mind for your wireless communication needs. EASY TO USE: This SDR radio receiver kit comes with 3 antennas and 1 USB cable for easy connection and installation. Simply press the black button once to power on and press twice to power off. WIDE FREQUENCY RANGE: The software defined radio receiver has a frequency range of 1MHz‑6GHz. It also features a micro storage card slot for convenient storage of data and codes, making it highly practical and user friendly. Feature: 1. VERSATILE FUNCTIONS: SDR radio receiver supports the for Portapack's 3.5mm interface for 1 key communication as a standard configuration. It enables reception of SSB, AM, narrowband FM, wideband FM sound signals, and features cascading spectrum functionalities. It is suitable for monitoring applications in ships (AIS), cars (TPMS), and electronic utility meters (ITRON ERT). 2. SLEEP MODE AND ENERGY SAVING: SDR receiver supports sleep mode with only the display screen off, conserving energy. It also includes sound output, microphone input, and a mini USB interface for added convenience. Specification: Item Type: SDR Receiver Kit Material: Aluminum Alloy Battery: Rechargeable lithium battery 2000mAh x 1 [Shipped with built in battery] Storage Card Type: Memory card (shipped without memory card) Package List: 1 x SDR Receiver  1 x 433Mhz Antenna 1 x 2.4G-5.8G WIFI Antenna 1 x 40Mhz-6Ghz Telescopic Antenna 1 x SMA Male Male cable 1 x Micro USB Charging Cable 5 x Accessory Note: The for Mayhem firmware required by for portapack has been flash stored in the demo board. Each demo board is tested before shipping. You can simply click the knob button to start the device and use it directly. Package List 1 x SDR Receiver 1 x 433Mhz Antenna 1 x 2.4G-5.8G WIFI Antenna 1 x 40Mhz-6Ghz Telescopic Antenna 1 x SMA Male Male cable 1 x Micro USB Charging Cable 5 x Accessory