HamGeek B205Mini SDR 70MHz-6GHz USB 3.0 AD9361 Full Duplex 56MHz Bandwidth ZYNQ XC7A020 Chip for GNU Radio OpenBTS

Description:
The HamGeek B205Mini offers a compact, fully integrated software-defined radio (SDR) platform, providing continuous frequency coverage from 70 MHz to 6 GHz. Tailored for low-cost experimentation, this device features an RFIC direct-conversion transceiver (AD9361) with up to 56 MHz real-time bandwidth, a reprogrammable ZYNQ XC7A020 CLG400 FPGA, and fast USB 3.0 connectivity with convenient bus power. With extensive software support, the HamGeek B205Mini allows users to quickly develop with tools like GNU Radio and create GSM base station prototypes using OpenBTS, making it an ideal platform for advanced SDR experimentation.

Features:
* Fully integrated dual-channel USRP device with continuous RF coverage from 70 MHz to 6 GHz
* Full-duplex, MIMO (2 Tx and 2 Rx) operation, with real-time bandwidth up to 56 MHz (61.44 MS/s quadrature)
* Fast and convenient super-speed USB 3.0 connection
* Open and reconfigurable FPGA
* Early prototype design platform for ADI's AD9361 RFIC, which is a fully integrated direct-conversion transceiver with mixed-signal baseband
* Steel enclosure accessory kit available for black PCB devices

Specifications:
Input/Output:
* DC Voltage Input: 5 V

Conversion Module Parameters:
* ADC Sampling Rate (Max): 61.44 MS/s
* ADC Resolution: 12 bits
* ADC SFDR: 78 dBc
* DAC Sampling Rate: 61.44 MS/s
* DAC Resolution: 12 bits
* Max Host Rate (16b): 61.44 MS/s
* LO Accuracy: ±2 ppm
* Unlocked TCXO Accuracy: ±7.5 ppm
* Locked TCXO Accuracy: <1 ppm

Single Channel RF Performance Parameters:
* SSB/Image Rejection: -35/50 dBc
* 2.4GHz: 3.5 dBm
* 6GHz: -12 dBm
* Output Power: >10 dBm
* Input Third-Order Intercept Point: -20 dBm
* Noise Figure: <8 dB

Packing List:
* HamGeek B205Mini motherboard with heatsink and protective case (pre-assembled) X 1
* TQTT rubber antenna X 3
* Micro-USB 3.0 data cable X 1
* RF cable (female-female connector) X 3

Packaging Details:
* Package weight: 0.55kg

FAQ:
1. Briefly introduce the HamGeek B205Mini and TinyB210 products, and what are the differences between them?
Answer:
A. HamGeek B205Mini is Single-Input Single-Output (1R1T), while TinyB210 is Dual-Input Dual-Output (2R2T).
B. The B205Mini transmitter is equipped with a Power Amplifier (PA), whereas the TinyB210 does not include an RF amplifier (the benefit is very low noise floor and high channel isolation).
C. Both B205Mini and TinyB210 feature External Clock (EXT_CLK) input and PPS input. The TinyB210 also includes a GPS module and implements a built-in GPSDO.
D. Both the B205Mini and TinyB210 have built-in firmware, making them plug-and-play without the need for tedious file replacement.

2. Is there support for GNURADIO and other applications such as SRSRAN and OAI?
Answer: Fully supported, used exactly the same as official compatible models.

3. What are the trade-offs of adding or not adding an RF Power Amplifier (PA) to the TinyB210?
Answer: Official boards for ADI, such as FMCOMMS2, 3, 5, etc., do not come with PAs. A typical input power of a few dBm is sufficient for RF experiments. We do have products with PAs, such as the SDRPi; however, during full-duplex transmission and reception, it has a significant impact on the receiving end.