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(2325) 99.2%,
Location: China
Ships to: US,
Item: 125981788319
All returns accepted:ReturnsNotAccepted
MPN:Does not apply
Unit Type:Unit
Unit Quantity:1
Unbranded:Unbranded
Type:Ham Radio Transceiver
USDX+HF transceiver short wave QRP SSB/CW transceiver 3W-5W full mode 8-band upgraded version USDX USDX/QCX-SSB GitHub: https://github.com/threeme3/QCX-SSB/tree/feature-rx-improved Description: This is a shortwave QRP SSB/CW transceiver. Ultra small size, easy to carry and use outdoors. It has a 1602N LCD display and built-in speakers. Support PC connection, use digital mode software such as FT8, JS8, FT4 for control, and support CW automatic decoding. Features: -Built in 4000mAh lithium battery -8 frequency bands: 3.5MHz~3.9MHz, 5351.5~5366.5 khz, 7MHz~7.3MHz, 10.1MHz~10.150MHz, 14MHz~14.350MHz, 18.068 MHz~18.168MHz, 21MHz~21.450MHz, and 28MHz~29.700MHz -Excellent PCB layout design, in line with high-frequency circuit design principles, ensuring excellent performance – Whether to use an external 13.8V power supply, with 8-band power up to 3-5W, and reserve SOT-223 and TO-220 pads for upgrading – High emission efficiency, with an efficiency of over 80% for 80m/60m/40m/30m/20m, over 70% for 17m, and over 60% for 15m/10m -KDS high-precision TCXO, with frequency accuracy better than 1PPM and frequency stability better than 0.5PPM -Ultra small size: 83 x 38 x 124mm/3.3 x 1.5 x 4.9 “(excluding protrusions) -Rich interfaces (CAT, PTT OUT, MIC/KEY, k-head microphone) All LPF components use 100V C0G/NP0 capacitors -Omron uses original magnetic latching relay -Using an operational amplifier chip with lower noise than LM4562 -Integrated speaker and cavity -BNC antenna interface Function List: -A simple, fun, and versatile QRP SSB high-frequency transceiver with built-in DSP and SDR functions; -SSB transmission level driven by EER class e -13.8V power supply approximately 5W PEP SSB output – Full mode support: USB, LSB, CW, AM, FM – DSP filter: 4000, 2500, 1700, 500, 200, 100, 50 Hz passband -DSP functions: Automatic Gain Control (AGC), Noise Reduction (NR), Voice Trigger Xmit (VOX), RX Attenuator (ATT), TX Noise Gate, TX Drive Control, Volume Control, dBm/s Meter -SSB side band/carrier suppression Transmit: better than -45dbc, IMD3 (dual tone) -33dbc, Receive: better than -50dbc -Multi band support, continuously adjustable in the 160m-10m band (performance from 20kHz to 99MHz, but with loss) -Open source firmware with built-in Arduino IDE; Allow experimentation, add new features, share contributions through Github, software complexity: 2000 lines of code -Software based VOX, can be used for fast full intrusion (QSK and semi QSK operations) or to assist RX/TX in switching digital modes (no CAT or PTT interface required), external PTT output/PA control TX delay -Simple installation modifications with changes to 8 components and 8 wires -Lightweight and low-cost transceiver design: Due to the eer transmitter e-class, it has high power efficiency (without the need for bulky heat sinks) and simple design (without the need for complex balanced linear power amplifiers) -All digital and software SSB transmission stage: By controlling the phase of the SI5351 phase-locked loop (through small frequency changes of 800kbits/s I2C) and the amplitude of PA (through PWM of the PA key shaping circuit), the microphone input is sampled to reconstruct the SSB signal -All digital and software based SDR receiver stage (optional): Sampling I/Q (complex) signals from Quadrature -Sample the detector digital mixer and mathematically perform a 90 degree phase shift (Hilbert transform) in the software, and cancel out a sideband by adding a sideband -Three independently switchable analog front-end receiver attenuators (0dB, -13dB, -20dB, -33dB, -53dB, -60dB, -73dB) -Receiver noise lower limit MDS: -135dbm, 28MHz (200Hz BW) -Receiver front-end selectivity: steep -45db/decade roll+/-2khz from tuning frequency -Blocking dynamic range: 20kHz offset 1
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