uSDR uSDX Plus V2 30/40/60/80m 8 Band SDR HF SSB QRP Transceiver LCD Display

Description

NOTE：Double-click the encoder to quickly switch the menu. Some buyers say that the ssb sound quality is not good. This is a historical reason. You can go to Facebook to check the discussion results.
Compared with the old uSDX, the new upgraded uSDX as follows:
+ Move the headphone jack and the power button/microphone jack to the front panel to make it easier to connect the earphone and power button.
+ Move the buttons to the bottom of the LCD screen for a larger touch area and a more comfortable button experience.
+ Upgrade the built-in speaker effect, the sound is doubled!
+ Ultra-small shell volume, only 83*38*120mm shell is used, and the shell space utilization rate is as high as 87%.
+ PCB reserves the pads required for various upgrades, which can be used out of the box, and can be used as a blueprint for DIY upgrades and learning.
+ Quickly switch QRP CW frequency.
+ Support CW side tone volume adjustment.
+ Support CW side tone tone adjustment.
Introduction:
This is a shortwave QRP SSB/CW transceiver. The ultra-small size is easy to carry for outdoor use, 1602N LCD screen, built-in speaker, support to connect to PC and use FT8, JS8, FT4 and other digital mode software control, and support CW automatic decoding.
Features:
+ 8 bands 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.
+ Regardless of using internal battery or external 13.8v power supply, it can reach 3-5W power in 8 bands, and reserve the SOT-223 and TO-220 package pads required for upgrades.
+ High emission efficiency, 80m/60m/40m/30m/20m efficiency is higher than 80%, 17m efficiency is higher than 70%, 15m/10m efficiency is higher than 60%.
+ High-precision KDS brand TCXO, frequency accuracy is better than 1PPM, frequency stability is better than 0.5PPM.
+ Ultra-small size: 83*38*124mm (excluding protruding parts).
+ Abundant interfaces (CAT, PTT OUT, MIC/KEY, K-head microphone).
+ All LPF parts use 100V C0G/NP0 capacitors.
+ Use original genuine Omron magnetic latching relays.
+ Use op amp chip with lower noise than LM4562.
+ Built-in speaker with cavity.
+ BNC antenna interface.
List of Functions:
- Simple, fun and versatile QRP SSB HF transceiver with embedded DSP and SDR functions;
- EER Class-E driven SSB transmit-stage
- Approximately 5W PEP SSB output from 13.8V supply（without battery）
- Full mode support: USB, LSB, CW, AM, FM (SSB mode has good reception effect but poor transmission effect. AM and FM modes are free power and have poor effect)
- DSP filter: 4000, 2500, 1700, 500, 200, 100, 50 Hz passband
- DSP functions: automatic gain control (AGC), noise reduction (NR), voice trigger Xmit (VOX), RX attenuator (ATT), TX noise gate, TX drive control, volume control, dBm/S meter.
- SSB for sideband/carrier suppression emission: better than -45dBc, IMD3 (dual tone) -33dBc, reception: better than -50dBc
- Multi-band support, continuously adjustable through 80m-10m frequency band (starting from 20kHz..99MHz, performance loss)
- Open source firmware, built using Arduino IDE; allows experimentation, can add new features, can share contributions through Github, software complexity: 2000 lines of code
- Software-based VOX can be used for fast full control (QSK and semi-QSK operation) or auxiliary RX/TX switching to operate in digital mode (no CAT or PTT interface required), external PTT output/PA control with TX-delay
- All-digital and software-based SSB transmitter stage: By controlling the phase of the SI5351 PLL (via a small frequency change on the 800kbits/s I2C) and the amplitude of the PA (via the PWM PA key shaping circuit)
- All-digital and software-based SDR receiver stage (optional): I/Q (complex) signals are sampled from the quadrature sampling detector digital mixer, and the 90-degree phase shift is mathematically performed in the software (Hill Bert transform) and cancel one by adding sidebands
- Three independent switchable analog front-end receiver attenuators (0dB, -13dB, -20dB, -33dB, -53dB, -60dB, -73dB)
- Receiver noise floor MDS: –135 dBm at 28MHz (200Hz BW)
- Receiver front-end selectivity: +/-2kHz steep -45dB/decade roll-off from the tuning frequency
- Blocking dynamic range: 20kHz offset 123dB, 2kHz offset 78dB
- CW decoder, Straight/Iambic-A/B keyer
- VFO A/B + RIT and Split, and the corresponding relay with filter switch through I2C
- CAT support (using Kenwood TS-480 protocol)
Package Included:
- 1 x Transceiver（External 13.8V power supply without battery）
- 1 x Mic
- 1 x charger