USDR SDR Transceiver All Mode 8 Radio QRP USB LSB CW AM FM HF Transceiver

  

USDR is optimized and modified based on the open source work uSDX/QCX-SSB. This is a shortwave QRP SSB/CW transceiver. The ultra-small size makes it easy to carry for outdoor use.

It adopts 1602N LCD screen, built-in speakers. Support to connect to PC and use FT8, JS8, FT4 and other digital mode software control, support CW automatic decoding. 8 coverage 80m/60m/40m/30m/20m/17m/15m/10m - Excellent PCB layout design in line with high-frequency circuit design principles to ensure excellent performance - Can reach 3-5W power in 8 bands and reserve TO-220 package pads required for upgrades - High emission efficiency, 80m/60m/40m/30m/20m efficiency is higher than 85%, 17m/15m efficiency is higher than 80%, 10m efficiency is higher than 70% - High-precision for KDS brand TCXO, frequency accuracy is better than 1PPM, frequency stability is better than 0.5PPM - Independent core board and RF board to avoid own signal interference. Ultra-small size: 83 x 38 x 124mm(excluding protruding parts) - Rich interfaces (CAT, PTT OUT, MIC/KEY, K-head microphone) - All LPF parts use 100V C0G/NP0 capacitors - Use original genuine Omron magnetic latching relay - Use original genuine LM4562 or LM833 op amp chip - Built-in speaker with cavity - BNC antenna interface. 99MHz with loss in performance - Open source firmware, built with IDE for ; allows experimentation, new features can be added, contributions can be shared via Github, software-complexity: 2000 lines of code - Software-based VOX that can be used as fast Full Break-In (QSK and semi-QSK operation) or assist in RX/TX switching for operating digital modes (no CAT or PTT interface required), external PTT output/PA control with TX-delay - Simple to install modification with 8 component changes and 8 wires - Lightweight and low-cost transceiver design: because of the EER-transmitter class-E stage it is highly power-efficient (no bulky heatsinks required), and has a simple design (no complex balanced linear power amplifier required) - Fully digital and software-based SSB transmit-stage: samples microphone-input and reconstruct a SSB-signal by controlling the phase of the SI5351 PLL (through tiny frequency changes over 800kbits/s I2C) and the amplitude of the PA (through PWM of the PA key-shaping circuit) - Fully digital and software-based SDR receiver-stages (optionally): samples I/Q (complex) signal from Quadrature Sampling Detector digital mixer, and performs a 90-degree phase-shift mathematically in software (Hilbert-transform) and cancels out one side- by adding them - Three independent switchable analog front-end receiver attenuators (0dB, -13dB, -20dB, -33dB, -53dB, -60dB, -73dB) - Receiver Noise level MDS: -135 dBm at 28MHz (in 200Hz BW) - Receiver Front-end selectivity: steep -45dB/decade roll-off +/-2kHz from tuned-frequency - Blocking dynamic range: 20kHz offset 123dB, 2kHz offset 78dB - CW decoder, Straight/Iambic-A/B keyer - VFO A/B + RIT and Split, and corresponding relay -filter switching via I2C - CAT support (TS480 subset). 1 x Transceiver - 1 x Mic. (Note: it's not including Built-in battery). 7-15 days to UK, Germany, French, Australia, Canada, etc, Over 30 days to other countries. Our guarantee does not cover accidental damage or wear of product caused by customer. Thank you very much for your understanding!

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