Product Summary
uSOTA-ATU USDX HF QRP SDR Transceiver Built-in ATU-100 Antenna Tuner with Dual OLED Displays is a RF wireless product selected for wireless communication, antenna experiments and radio signal workflows. It is suitable for radio users, SDR experimenters and wireless project builders who need practical electronics hardware for reliable project work.
Best For
- wireless communication, antenna experiments and radio signal workflows
- SDR receivers, LoRa modules, antennas and RF test setups
- Electronics testing, repair, prototyping and maker workflows
FAQ
Who is this product for? It is intended for radio users, SDR experimenters and wireless project builders.
What should I check before buying? Review the product options, specifications, included accessories and compatibility details on this page.
uSOTA-ATU USDX HF QRP SDR Transceiver Built-in ATU-100 Antenna Tuner with Dual OLED Displays 8 Bands Design
uSDX-ATU:
uSDX :HF QRP SDR Transceiver
uSDX Open source project uSDX/QCX-SSB optimization modifications based on Guido PE1NNZ. The uSDX is a short-wave QRP SSB/CW transceiver. 1602 LCD display, ultra-small size is easy to carry.
Source address: https://github.com/threeme3/QCX-SSB
Group discussion: https://groups.io/g/ucx/topics
ATU:(Automatic Antenna Tuner Unit ):
The ATU part is based on the David Fainitski, N7DDC open source project 7X7 ATU100 optimization modifications.
Automatic Antenna Tuner Unit is a miniaturized clone of David Fainitski, N7DDC's infamous 7X7 automatic antenna tuner unit adapted for QRP operation up to 10 watts.
uSDX_ATU: Performance characteristics
uSDX
8 band covering 80 m / 60 40 m/m/m / 20 30 17 15 m/m/m / 10 m
Transmission efficiency: 80m/60m/40m/30m/20m efficiency is higher than 85%; 17m/15m efficiency is higher than 80%; 10m efficiency higher than 70%;
Connect to PC using FT8, JS8, FT4 and other digital mode software control, support CW automatic decoding
3-5W power in 8 bands and free upgrade of PA module (TO-220)
High precision KDS brand TCXO, frequency accuracy is better than 1PPM, frequency stability is better than 0.5PPM
Independent core board and RF PA board and ATU board to avoid their own signal interference
Ultra small size: 100*90*57mm (3.9 "x 3.5" x 2.2 ") (excluding protruding parts)
All LPF parts use 100V C0G/NP0 capacitors
Use the and LM4562 or LM833 or LT6231 op amp chips
Rich interface: HEADPHONE, CAT/PTT OUT, MIC/PTT, SPK/MIC hand microphone;
BNC antenna interface (with BCN-SL16 adapter for easy antenna matching)
External power supply: 12.6VDC (13.8VDC power adapter);
ATU
Maximum tuned inductance: 8.42uH
Minimum tuning inductance: 0.05uH
Max tuning capacitance: 1869 pF
Minimum tuning capacitance: 10 pF
uSDX_ATU: System functions
Full mode support: USB, LSB, CW, AM, FM;
Full digital and software-based SDR reception channels;
Full digital and software-based SSB transmission channels;
Receiving attenuator: 0dB, -13dB, -20dB, -33dB, -53dB, -60dB, -73dB;
DSP filter bandwidth: 4000, 2500, 1700, 500, 200, 100, 50 Hz
Receiving noise: -135dBm@28MHz (BW=200Hz)
Receiver front selectivity: Tuning frequency -45dB/tenfold roll down +/ -2kHz
Single sideband/carrier suppression: Transmit, better than 45dBc; Reception, better than 50dBc;
DSP functions: Automatic Gain Control (AGC), Noise reduction (NR), Voice triggered Xmit (VOX), RX Attenuator (ATT), TX Noise Gate, TX Driver control, volume control, dBm/S meter.
