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Created HackRF One (markdown)

Michael Ossmann
2014-04-23 15:51:33 -07:00
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HackRF One is the current hardware platform for the HackRF project.
## Features
* half-duplex transceiver
* operating freq: 10 MHz to 6 GHz
* supported sample rates: 8 Msps to 20 Msps (quadrature)
* resolution: 8 bits
* interface: High Speed USB (with USB Micro-B connector)
* power supply: USB bus power
* software-controlled antenna port power (max 50 mA at 3.3 V)
* SMA female antenna connector
* SMA female clock input and output for synchronization
* convenient buttons for programming
* pin headers for expansion
* portable
* open source
## Differences between Jawbreaker and HackRF One
Jawbreaker was the beta platform that preceded HackRF One. HackRF One incorporates the following changes and enhancements:
* Antenna port: No modification is necessary to use the SMA antenna port on HackRF One.
* PCB antenna: Removed.
* Size: HackRF One is smaller at 120 mm x 75 mm (PCB size).
* Enclosure: The commercial version of HackRF One ships with an injection molded plastic enclosure. HackRF One is also designed to fit other enclosure options.
* Buttons: HackRF One has a RESET button and a DFU button for easy programming.
* Clock input and output: Installed and functional without modification.
* USB connector: HackRF One features a new USB connector and improved USB layout.
* Expansion interface: More pins are available for expansion, and pin headers are installed on HackRF One.
* Real-Time Clock: An RTC is installed on HackRF One.
* LPC4320 microcontroller: Jawbreaker had an LPC4330.
* RF shield footprint: An optional shield may be installed over HackRF One's RF section.
* Antenna port power: HackRF One can supply up to 50 mA at 3.3 V DC on the antenna port for compatibility with powered antennas and other low power amplifiers.
* Enhanced frequency range: The RF performance of HackRF One is better than Jawbreaker, particularly at the high and low ends of the operating frequency range. HackRF One can operate at 10 MHz or even lower.
## SMA, not RP-SMA
Some connectors that appear to be SMA are actually RP-SMA. If you connect an RP-SMA antenna to HackRF One, it will seem to connect snugly but won't function at all because neither the male nor female side has a center pin. RP-SMA connectors are most common on 2.4 GHz antennas and are popular on Wi-Fi equipment. Adapters are available.
## Transmit Power
HackRF One's absolute maximum TX power varies by operating frequency:
* 10 MHz to 2150 MHz: 5 dBm to 15 dBm, generally increasing as frequency decreases
* 2150 MHz to 2750 MHz: 13 dBm to 15 dBm
* 2750 MHz to 4000 MHz: 0 dBm to 5 dBm, increasing as frequency decreases
* 4000 MHz to 6000 MHz: -10 dBm to 0 dBm, generally increasing as frequency decreases
Through most of the frequency range up to 4 GHz, the maximum TX power is between 0 and 10 dBm. The frequency range with best performance is 2150 MHz to 2750 MHz.
Overall, the output power is enough to perform over-the-air experiments at close range or to drive an external amplifier. If you connect an external amplifier, you should also use an external bandpass filter for your operating frequency.
Before you transmit, know your laws. HackRF One has not been tested for compliance with regulations governing transmission of radio signals. You are responsible for using your HackRF One legally.