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 8338120mm 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. + 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: 8338124mm (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. 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). 1 x Transceiver(External 13.8V power supply without battery) - 1 x Mic - 1 x charger. WA deliveries can sometimes take longer. Extra AUD 1.99-3.99, Please refer to the listing before purchasing. Our warehouse are based in. If Weekends or holidays, we'll reply within 48 hours. Will do best to solve problem. Wireless 4K HDMI Transmitter and Receiver Kits Full HD 30Hz 5GHz 164ft Dongles.
Wireless Audio Video Transmitter Receiver Adapter HDMI Extender HD 1080P Fit TV. Wireless HDMI Transmitter Receiver 4K HD Wireless HDMI Extender fit 2.4G / 5G. 5.8GHz 150M Wireless AV Sender Remote Audio Video Transmitter Receiver.Wireless HDMI Transmitter 4K 30Hz 5GHz 164ft Display Dongle Media Laptops PC. This item is in the category "Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Transceivers". The seller is "boblov_official_store" and is located in this country: CN. This item can be shipped worldwide.