Upgrades for HackRF-One R9: MAX2837 is replaced by MAX2839. Si5351C is replaced by Si5351A with additional clock distribution. A series diode is added to the antenna port power supply. For HackRF One is a Software Defined Radio peripheral capable of mission or reception of radio signals from 1 MHz to 6 GHz. Designed to enable test and development of modern and next generation radio technologies, for HackRF One is an open source hardware platform that can be used as a USB peripheral or programmed for stand-alone operation. 1 MHz to 6 GHz operating frequency. Half-duplex ceiver Up to 20 million samples per second. 8-bit quadrature samples (8-bit I and 8-bit Q) Specifications: For GNU Radio, SDR , and the like Software-configurable RX and TX gain and baseband filter Software-controlled antenna port power (50 mA at 3.3 V) SMA female antenna connector SMA female clock input and output for synchronization Convenient buttons for programming Internal pin headers for expansion Hi-Speed USB 2.0 USB-powered Open source hardware for HackRF One 1 MHz to 6 GHz SDR platform software defined radio development board About for PortaPack H2: Description: This usually comes with a new crystal clear case so you can see all the beautiful silkscreen art. Comes with a built in microphone. Has new CPLD code so the reboot button doesn't freeze the device unlike some of the other H2's on the market. This Version of PortaPack H2 adds a 10.00MHZ TCXO FOX 5070 crystal oscillator to the for-original 2nd generation H2 Support the latest official firmware upgrade Specification: 3.2-inch TFT240 x 320 screen Navigation switch Audio output Microphone input DC 2.1 interface 4-layer gold plate Type:B:With 35DBi GSM/3G/4G Antenna/A:Without 35DBi GSM/3G/4G Antenna Colour:Black Material:PCBandelectronic componentsandMetal Package Contents: 1 x Assembled for HackRF Portapack H2 and for HackRF One 1MHz to 6GHz SDR 1 x Telescopic Antenna 1 x 35DBi GSM/3G/4G Antenna 1 x Micro-Usb Charging Cable