1 MHz to 6 GHz Frequency Range: The wide frequency range allows for versatile testing and development of various radio technologies, from low-frequency applications to high-frequency communications.

Up To 20 Million Samples Per Second: This high sampling rate enables accurate and detailed signal analysis, making it suitable for demanding applications that require high-resolution data.

Software-Configurable RX and TX Gain: The ability to adjust gain settings in software provides flexibility in optimizing the performance for different signal strengths and environments.

SMA Female Antenna Connector: The standard SMA connector ensures compatibility with a wide range of antennas, simplifying the setup and integration into existing systems.

For HackRF One is a Software Defined Radio peripheral capable of transmission 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. 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.

Clifford Heath Version HackRF One Github link: https://github.com/cjheath/hackrf

Clifford Heath Version HackRF One major hardware improvement advantage:

Added protection against excessive RF at the antenna port (Tx and Rx)
Updated the receive and transmit LNA,
Improved the Bias-T performance,
Updated other parts to current-production parts (RF switches, USB & CLKIN/CLKOUT protection)

Specification:

1 MHz to 6 GHz operating frequency
Half-duplex transceiver
Up to 20 million samples per second
8-bit quadrature samples (8-bit I and 8-bit Q)
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
Material: Metal
colour: black

The Details of Clifford Heath Version HackRF One hardware improvements：

Added strong protection to the antenna port using the SMP1330-085LF. This is designed to provide protection for both the transmit amplifier and the receive LNA.
Improved the Bias T so it operates well at a much higher frequency, which should improve RF sensitivity (whether the bias T is enabled or not).
Replaced the seven SKY13350-385LF parts with SKY-13453-385LF (current production part)
Replaced the two MGA-81563-TR1G MMIC amplifiers with TRF37B73 (current production part)
Updated protection on the USB port with current production USB6B1 not LXES15AAA1-100
Updated protection on CLKIN and CLKOUT with current production BAS70 not LXES1TBCC2-004
Reduced the number of drill sizes from fourteen (14) down to six (6), with all vias being 27/13 mil, to make the PCB cheaper to produce.
Added two extra fiducials to help parts placement.

Package Includes:

SDR Specifications
Tuning range	1 MHz to 6 GHz
Duplex	Half-duplex Transceiver
Max sampling rate	up to 20 million samples per second
ADC/DAC resolution	8-bit I and 8-bit Q