Description
The uSDX transceiver is a product refined and modified from the open-source uSDX/QCX-SSB project by Guido PE1NNZ. It is a compact, shortwave QRP SSB/CW transceiver featuring two OLED displays. The automatic antenna tuner unit is designed to accommodate QRP operation up to 10 watts.
Open source information is available at: https://github.com/threeme3/QCX-SSB. Join the ongoing discussions at: https://groups.io/g/ucx/topics
Features
1. Compact Size: Easy to carry, lightweight, and portable.
2. 8 Bands Design: includes 3.5MHz; 5.3MHz; 7MHz; 10MHz; 14MHz; 18MHz; 21MHz; 29MHz.
3. Emission Efficiency: Above 85% ( 3.5MHz; 5.3MHz; 7MHz; 10MHz; 14MHz), higher than 80% (18MHz and 21MHz) and over 70% for 29MHz.
4. PC Connection: Compatible with PC-run digital mode software controls like FT8, JS8, FT4 and supports automatic CW decoding.
5. Free Upgrade: 3-5W power across 8 bands. PA module (TO-220) can be upgraded freely.
6. Stable Performance: Uses high precision TCXO for KDS with a frequency accuracy of better than 1PPM and frequency stability better than 0.5PPM.
7. Independent Design: comprises independent core board, RF PA board, and ATU board to minimize signal interference.
8. Selected Parts: LPF parts use 100V C0G/NP0 capacitors. It may use a LM4562, LM833 or LT6231 op amp chip.
9. Diverse Interfaces: HEADPHONE, PTT OUT, MIC/PTT, SPK/MIC BNC antenna interfaces are included (with BCN-SL16 adapter, the antenna can be easily installed).
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: Supports all modes including USB, LSB, CW, AM, Frequency Modulation. It also features all-digital and software-based software defined radio receive channels, all-digital and SSB transmit channels, a receive attenuator at values ranging from 0dB to -73dB, and DSP filter bandwidths from 50 to 4000 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), and various DSP functions.
Three-Layer PCB: Consists of ATU-board, PA-board (8 band), and a Mainboard. A plethora of rear panel connectors are embedded for functionality.
Packing List
1 * Main Unit
1 * 13.5VDC Power Adapter
1 * BNC Adapter
1 * BNC Cable
1 * Handheld Microphone
1 * Wrench
Note: The unit does not include a built-in battery or speaker. An external power supply is required.