USDX: HF QRP SDR Transceiver. USDX is optimized and modified based on Guido PE1NNZ's open source project uSDX/QCX-SSB.USDX is a shortwave QRP SSB/CW transceiver. With 1602 LCD screen and ultra-small size, it is easy to carry. ATU: (Automatic Antenna Tuner Unit). Automatic Antenna Tuner Unit is a miniaturized clone of David Fainitski, N7DDC's infamous 7X7 ATU100 automatic antenna tuner unit adapted for QRP operation up to 10 watts. 8 bands: 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); higher than 70% for 29MHz.
Connect to PC, use FT8, JS8, FT4 and other digital mode software control, support CW automatic decoding. It can reach 3-5W power in 8 bands and can freely upgrade the PA module (TO-220). High-precision TCXO for KDS, frequency accuracy better than 1PPM, frequency stability better than 0.5PPM.Independent core board, RF PA board and ATU board to avoid own signal interference. Ultra-small size: 100 x 90 x 57mm/3.9 x 3.5 x 2.2 (without protrusions).
All LPF parts use 100V C0G/NP0 capacitors. Use original LM4562 or LM833 or LT6231 op amp chip. Rich interfaces: HEADPHONE, PTT OUT, MIC/PTT, SPK/MIC.BNC antenna interface (with BCN-SL16 adapter, easy to match antenna). External power supply: 12.6VDC (13.8VDC power adapter). Maximum tuning inductance: 8.42µH. Minimum tuning inductance: 0.05µH. All-digital and software-based SDR 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, Volume Control, dBm/S meter. Headphone Jack (3.5 mm). MIC/PTT (KEY) Jack (3.5 mm). SPK/MIC Jack (3.5 mm).
PTT OUT Jack (3.5 mm). 1 x Main Unit uSDX_ATU. 1 x 12.6VDC Power Adapter (or 13.8VDC). 1 x UV-3R Handheld Microphone (including MIC, PTT, SPEAKER functions). Note that there is no built-in battery or built-in speaker.
External power supply 13.6v is required. This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Transceivers". The seller is "vrg5612" and is located in this country: CN. This item can be shipped worldwide.