Upgraded ATS-25X1 All Band DSP Radio Receiver FM LW MW With Touch Screen 2.4 D1. Usdx/r+ Plus V2 8 Band SDR Full Mode HF Ham Radio SSB QRP Transceiver Upgrade D1.Usdr usdx+ Plus V2 8 Band SDR Full Mode HF Ham Radio SSB QRP Transceiver Upgrade. Upgraded ATS-25X1 All Band DSP Radio Receiver FM LW MW SW With 2.4 Touch Screen. Usdx+ HF Shortwave Transceiver QRP SSB/CW Transceiver 3W-5W All Mode 8 Band Upgraded Version of usdx w/Power Adapter US Plug Description: This is a shortwave QRP SSB/CW transceiver. The ultra-small size is easy to carry for outdoor use.
It has a built-in 4000mAh lithium battery, uses a 1602N LCD screen, and has a built-in speaker. It supports connecting to a PC, using digital mode software control such as FT8, JS8, and FT4, and supports CW automatic decoding. Features: -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 -Built-in 11.1v (12.6v) lithium battery. 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. 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 4. 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) 6. 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 7.
Receiver noise floor mds: -135dbm at 28mhz (200hz bw) 8. Receiver receiver front-end selectivity: +/-2khz steep 45db/decade tuning frequency rolling 9. Blocking blocking dynamic range: 20khz offset 123db, 2khz offset 78db 10. Cw decoder, direct/iambic-a/b keyer 11.
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