USDR SDR Transceiver All Mode 8 Band HF Ham Radio QRP CW Transceiver 80M/60M/40M/30M/20M/17M/15M/10M Description: 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.
Features: - 8 band 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. 99MHz with loss in performance - Open source firmware, built with IDE for Arduino; 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-band 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 band-filter switching via I2C - CAT support (TS480 subset) Specifications: - Type: HF QRP SDR Transceiver - Mode: SSB/CW - Rf output: 10W max at 13.8V exit DC in - Frequency range: 3.5-30MHz - Built-in MIC - Antenna/connector: 50ohms/SO-239 Package Included: - 1 x Transceiver - 1 x Mic. Usually it cost about 35USD-50USD.
If you receive defective item, please kindly notify us within 14 days. This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Transceivers". The seller is "ifarming" and is located in this country: CN. This item can be shipped worldwide.