Usdx+ HF Shortwave Transceiver QRP SSB/CW Transceiver 3W-5W All Mode 8 Band Upgraded Version of usdx. This product has no built-in battery and no power source. It needs to be equipped by the user. The power interface is 5.5mm, the power supply voltage is 12.6V, 1A 2A can be used. The battery specification is 11.1V/12.6V 4000mAh lithium battery. This is a shortwave QRP SSB/CW transceiver. The ultra-small size is easy to carry for outdoor use, using 1602N LCD screen, built-in speaker, support to connect to PC, use digital mode software control such as FT8, JS8, FT4, etc. Support CW automatic decoding. 8 tracks cover 80m/60m/40m/30m/20m/17m/15m/10m. Excellent PCB layout design in line with high frequency circuit design principles to ensure excellent performance. Whether using internal battery or external 13.8v power supply, it can achieve 3-5w power in 8 ranges, and reserve SOT-223 and TO-220 pack pads needed to upgrade. High emission efficiency, 80m/60m/40m/30m/20m efficiency is greater than 80%, 17m efficiency is greater than 70%, 15m/10m efficiency is greater than 60%. High accuracy KDS brand TCXO, frequency accuracy is better than 1ppm, frequency stability is better than 0.5ppm. Ultra small size: 8338124mm (excluding protruding parts). Abundant interfaces (cat, ptt out, mic/key, k-head mic). All LPF parts use 100v c0g/np0 capacitors. Use genuine Omron original magnetic latching relays. Use op amp chip with lower noise than LM4562. Built-in speaker with cavity. BNC antenna interface. The usdx+ update is as follows. Moved the headphone and power key/microphone jacks to the front panel for easy access to the headphone and power button. Move the keys to the bottom of the LCD screen for a larger touch area and a more comfortable keystroke experience. Upgraded built-in speaker effects, double the sound! PCB reserved pads for various upgrades, out of the box, can be used as a template for DIY upgrade learning. Quickly change qrp cw frequency. Support cw sidetone volume adjustment. Support cw sidetone adjustment. Filter dsp filter: 4000, 2500, 1700, 500, 200, 100, 50hz passband. Function DSP functions: automatic gain control (AGC), noise reduction (NR), Xmit voice trigger (VOX), RX attenuator (ATT), TX noise gate, tx unit control, volume control, dbm/s meter. Sidebar/Carrier Suppression SSSSB transmit: better than -45dbc, imd3 (dual tone) -33dbc, receive: better than -50dbc. Support multi-band support, continuously adjustable 10m within 80m frequency range from 20khz.. Open source firmware, built with arduino ide; allows experimentation, new features can be added, contributions can be shared via github, software complexity: 2000 lines of software-based Vovox code available for fast full control (qsk and half-qsk operations) or rx/ Auxiliary switch tx for external control of ptt/pa output using fully digital tx-delay stage and software based ssb stage transmitter in digital mode (no cat or ptt interface required): controls the phase of the sill si5351 (by switching at 800kbits/s Small frequency changes under i2c) and magnitude of pa (via pwm pa key shaping circuit). Software-based all-digital SDR receiver stage (optional): The I/Q (complex) signal is sampled from a quadrature sampling detector digital mixer and a 90 degree phase shift is performed mathematically in software (Hilbert transform) and three independently switchable analog faders (0db, -13db, -20db, -33db, -53db, -60db, -73db) from the pre-receiver by adding Atten sidebands. Receiver noise floor mds: -135dbm at 28mhz (200hz bw). Receiver receiver front-end selectivity: +/-2khz steep 45db/decade tuning frequency rolling. Blocking blocking dynamic range: 20khz offset 123db, 2khz offset 78db. Cw decoder, direct/iambic-a/b keyer. Vvfo a/b + rit and split, and the corresponding relay through i2c. Cat supports cat with filter switch (using kenwood TS-480 protocol). Type: hf qrp sdr transceiver. Frequency range: 3.5-30mhz. 1 x usdx+ Transceiver. 4 x Machine Foot Pads. [High Quality] – We focus on R&D, cooperating with professional manufacturers, ensuring that we provide our customers with top quality and innovative products. [Perfect Fitment] – We aim to provide perfect aftermarket parts to your vehicle. [Great Price] – We try our best to offer you the best price in all markets. [Excellent Customer Service] – We try our best to service our customers all time, professionally and sincerely solve your problem and reply quickly within 24 hours(excluding weekends). We sincerely do business with our customers. My goal is to make sure you are a happy customer and pleasant shopping with us. We package all items with care to ensure safe arrival! ? Return Period 60-day happy return window! ? Issue Resolution If your item has any issues or you’re not fully satisfied, please message us first before starting a return! We love solving problems for our customers quickly, and we’ll find the best fix to save your time and hassle. ? Return Instructions Just shoot us a message, and we’ll share all the return info and easy steps with you immediately. ? Packaging Tip Keep your item in its original package! Try not to open or damage the packaging if you wish to return it, for a smooth return process. ? Much Appreciated Thank you so much for your understanding and support! We can offer you. ^0^Common Issues We Can Help Resolve. Fitment Issues? : If the part does not fit your vehicle, please provide the details of your vehicle’s make, model, and year, and we will help verify if the part is compatible or offer an alternative solution. Other Problems? : Any other questions, please kindly feel free advice on us here. Our customer service team will get back to you as soon as possible to assist with any questions or concerns. We strive to provide excellent customer service and thank you for your help of improving our service, and we would appreciate the opportunity to resolve any issues you may have before you consider opening a case. PS, Due to the time difference, please allow us some time to get back to you. Thank you for your patience and understanding. We always reply you within 24 hours except weekends. We will try our best to service you. You may also like. ADF4351 Development Board 35M-4400M RF Signal Source Phase Locked Loop Module. 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