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uSOTA-ATU USDX HF QRP SDR Transceiver Built-in ATU-100 Antenna Tuner with Dual OLED Displays 8 Bands Design Support PC Software Control
  • uSOTA-ATU USDX HF QRP SDR Transceiver Built-in ATU-100 Antenna Tuner with Dual OLED Displays 8 Bands Design Support PC Software Control
  • uSOTA-ATU USDX HF QRP SDR Transceiver Built-in ATU-100 Antenna Tuner with Dual OLED Displays 8 Bands Design Support PC Software Control
  • uSOTA-ATU USDX HF QRP SDR Transceiver Built-in ATU-100 Antenna Tuner with Dual OLED Displays 8 Bands Design Support PC Software Control
  • uSOTA-ATU USDX HF QRP SDR Transceiver Built-in ATU-100 Antenna Tuner with Dual OLED Displays 8 Bands Design Support PC Software Control
  • uSOTA-ATU USDX HF QRP SDR Transceiver Built-in ATU-100 Antenna Tuner with Dual OLED Displays 8 Bands Design Support PC Software Control
  • uSOTA-ATU USDX HF QRP SDR Transceiver Built-in ATU-100 Antenna Tuner with Dual OLED Displays 8 Bands Design Support PC Software Control

uSOTA-ATU USDX HF QRP SDR Transceiver Built-in ATU-100 Antenna Tuner with Dual OLED Displays 8 Bands Design Support PC Software Control

uSOTA-ATU USDX HF QRP SDR Transceiver Built-in ATU-100 Antenna Tuner with Dual OLED Displays 8 Bands Design Support PC Software Control
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The uSDX transceiver is optimized and modified based on the Guido PE1NNZ open source project uSDX/QCX-SSB. The USDX is a shortwave QRP SSB/CW transceiver. With two OLED displays, it is compact in size and easy to carry. The automatic antenna tuner unit is adapted for QRP operation up to 10 watts.

Open source address: https://github.com/threeme3/QCX-SSB
Discussion group: https://groups.io/g/ucx/topics

Features:
Compact Size:
It is compact in size, lightweight, portable and easy to use.
8 Bands Design: 3.5MHz; 5.3MHz; 7MHz; 10MHz; 14MHz; 18MHz; 21MHz; 29MHz.
Emission Efficiency: higher than 85% ( 3.5MHz; 5.3MHz; 7MHz; 10MHz; 14MHz); higher than 80% (18MHz and 21MHz); For 29MHz, it's over 70%.
PC Connection: Connected to a PC, using the FT8, JS8, FT4 and other digital mode software controls, supports CW automatic decoding.
Free Upgrade: It can reach 3-5W power in 8 bands and can freely upgrade the PA module (TO-220).
Stable Performance: High precise TCXO for KDS, with frequency accuracy better than 1PPM and frequency stability better than 0.5PPM.
Independent Design: Independent core board, radio frequency PA board, and ATU board to avoids its own signal interference.
Selected Parts: All LPF parts use 100V C0G/NP0 capacitors, or use a LM4562 or LM833 or LT6231 op amp chip.
Rich Interfaces: There are HEADPHONE, PTT OUT, MIC/PTT, SPK/MIC BNC antenna interfaces (with BCN-SL16 adapter, easy matching antenna).

Specifications:
Name: Transceiver Antenna Tuner Set
Material: printed circuit board
ATU (Automatic Antenna Tuner Unit):
Maximum tuning inductance: 8.42µH
Minimum tuning inductance: 0.05μH
Maximum tuning capacitance: 1869pF
Minimum tuning capacitance: 10pF
Package size: 200 * 100 * 50mm / 7.87 * 3.94 * 1.97in
Package weight: 1200g / 2.65lb

uSDX_ATU System Functions:
Full mode support: USB, LSB, CW, AM, Frequency Modulation
All-digital and software-based software defined radio receive channels
All-digital and software-based SSB transmit channels
Receive attenuator: 0dB, -13dB, -20dB, -33dB, -53dB, -60dB, and 73dB
DSP filter bandwidths: 4000, 2500, 1700, 500, 200, 100, and 50 Hz
Receiving background noise: -135dBm at 28MHz (BW=200Hz)
Receiver Front-End selectivity: Tuning frequency -45dB/decade roll-off ±2kHz
SSB/carrier suppression: transmit, better than 45dBc; receive, better than 50dBc
DSP functions: Automatic Gain Control (AGC), Noise Reduction (NR), Voice Triggered Xmit (VOX), RX Attenuator (ATT), TX Noise Gate, TX Drive Control, Volumes Control, dBm/S meter

Three-Layer PCB:
ATU-board
PA-board: 8 band
Mainboard

Rear Panel Connector (JACK):
1. Headphone Jack (3.5 mm):

Tips–Audio out
Rings–Audio out
Sleep–GND

2. MIC/PTT (Keys) Jack (3.5 mm):
Tips–Mic input
Rings–PTT
Sleep–GND

CW-KEYS INPUT MODE:
Tips–DAH
Rings–DIT
Sleep–GND

3. SPK/MIC Jack (3.5 mm):
Tips: SPEAKER
Rings 1: MIC
Rings 2: PTT
SLEEVE: GND

4. PTT OUT Jack (3.5 mm):
Tips–SSR output
Rings–SSR output
Sleep–GND

Packing List:
1 * Main Unit
1 * 13.5VDC Power Adapter
1 * BNC Adapter
1 * BNC Cable
1 * Handheld Microphone
1 * Wrench

Note:
Note that there is no built-in battery or built-in speaker. External power supplys is required.

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