USDX QCX-SSB To SSB HF Transceiver QRP SDR Transceiver 8-Band 5W w/ DSP SDR Function 

  USDX software open source ::

  https://github.com/threeme3/QCX-SSB/tree/feature-rx-improved

  Some hardware open source sites:

  https://dl2man.de/

  https://antrak.org.tr/blog/projeler/usdx-an-arduino-based-sdr-all-mode-hf-transceiver-pcb-iteration-v1-02/

  https://www.qsl.net/py2ohh/trx/usdx/usdx.html

  Group:

  https://groups.io/g/ucx/topics

  Description:

  This is a shortwave QRP SSB/CW transceiver. It boasts 1602 screen, built-in battery, equipped with charger, built-in mic, built-in speaker! It can 

  be connected to an automatic key, and can be decoded by cw.

  Features:

  - Using IRF series launch tube, durable

  - Can be used by connecting the antenna (M seat)

  - 8 bands. Power standing wave digital display! External 13.8v maximum power 10w! Built-in 12.6v battery

  - Dimensions: 76 x 46 x130mm/3 x 1.8 x 5.1"

  - Provide ft8 option connector later

  - Use TCXO for KDS. Accuracy 0.5PPM (1PPM per year)

  - Aluminum shell laser marking

  - All-aluminum knobs! Translucent silica gel button (receive green, emit red)

  Function List:

  - Simple, interesting and versatile QRP SSB HF transceiver with embedded DSP and SDR functions

  - EER E-level driven SSB launch stage

  - 13.8V power supply provides about 10W PEP SSB output

  - Full mode support: USB, LSB, CW, AM, FM

  - DSP filter: 4000, 2500, 1700, 500, 200, 100, 50Hz passband

  - DSP function: automatic gain control (AGC), noise reduction (NR), voice trigger, voice trigger Xmit (VOX), RX attenuator attenuator (ATT), TX 

  noise gate, TX driver control, volume control, dBm/S-meter

  - SSB reverse sideband/carrier suppression transmission: better than -45dBc, IMD3 (two tones) -33dBc, reception: better than -50dBc

  - Multi-band support, continuously adjustable in the 160m-10m frequency band (and performance loss from 20kHz..99MHz)

  - Open source firmware, built in for Arduino IDE; allows experimentation, can add new functions, can share contributions through Github, software

  complexity: 2000 lines of code

  - Software-based VOX can be used as a fast full invasive (QSK and semi-QSK operation), or to assist in running in digital mode (without CAT or PTT interface) for RX/TX switching, external PTT output with TX/PA control-delay

  - Simple installation modification with 8 component changes and 8 wires

  - Lightweight, low-cost transceiver: Thanks to EER transmitter E-level, it has high power efficiency (no bulky heat sink required), and simple 

  design (no need for complex balanced linear power amplifiers)

  - SSB transmitter stage based entirely on digital and software: By controlling the phase of the SI5351 PLL (via the tiny frequency change of I2C over 800kbit/s) and the amplitude of the PA (via the PWM of PWM) to sample the microphone input and reconstruct the SSB signal. PA key shaping circuit)

  - Fully digital and software-based SDR receiver stage (optional): sample the I/Q (complex) signal from the quadrature sampling detector digital mixer, and perform a 90-degree phase shift in the software (Hilber transform) and eliminate one by adding sidebands

  - Three independent switchable analog front-end receiver attenuators (0dB, -13dB, -20dB, -33dB, -53dB, -60dB, -73dB)

  - Receiver noise level MDS: -135 dBm (200Hz BW) at 28MHz

  - Receiver front-end selectivity: steep tuning frequency -45dB / ten times roll-off +/- 2kHz

  - Blocking dynamic range: 20kHz offset 123dB, 2kHz offset 78dB

  - CW decoder, straight/Iambic-A/B keyer

  - VFO A/B + RIT and and Split, and switch the corresponding relay band filter through I2C

  - CAT support (TS480 subset), you can stream audio, press keys, and display text through CAT

  - This is probably the most cost-effective and easy to build standalone SDR/SSB transceiver. Great simplification Simplifies the original QCX circuit (that is, reduces the installation components by 50%, reduces the installation components by 50%, does not require complex transformer windings, and does not require alignment procedures), and is more versatile

  Port Introduction:

  - Charge: Charging port of the built-in lithium battery and you can only use the supplied charger! It is forbidden to use other chargers!

  - Switch: OFF to shut down. BAT: Built-in battery power supply. 13.8: External power supply

  - DC13.8V/3A: External power supply port

  - KEY: automatic key body connection (A, B, single key)

  - PA: External power amplifier, PTT signal

  - MIC: External microphone port

  - UART: Serial communication port (command compatible with TS-480)

  - SPK: External speaker

  Package Included:

  - 1 x Set of Transceiver