uSDX+ HF transceiver usb, lsb, cw, am, fm ,ssb

This is a shortwave qrp ssb/cw transceiver. Ultra small size is easy to carry for outdoor use, built-in 4000mAh lithium battery, 1602n LCD screen, built-in speaker, support connecting to a computer using FT8, JS8, FT4 and other modes of software to control the digital, support for cw auto decoding.

Features:

+ 8 tracks cover 80m/60m/40m/30m/20m/17m/15m/10m.

+ Excellent PCB layout design that conforms to the principles of high-frequency circuit design to ensure excellent performance.

+ Whether using the built-in battery or external 13.8v power supply, it can reach 8-steps 3-5w power, and reserve the necessary and to-220 pack pad for upgrading.

+ High transmitting efficiency, 80m/60m/40m/30m/20m efficiency is more than 80%, 17m efficiency is more than 70%, 15m/10m efficiency is more than 60%.

+ KDS high precision tcxo brand, frequency accuracy better than 1ppm, frequency stability better than 0.5ppm.

+ Ultra-small size: 83*38*124mm (excluding protruding parts).

+ Abundant interfaces (cat, ptt out, mic/key, k-head mic).

+ All LPF parts use 100v c0g/np0 capacitors.

+ Uses true Omron magnetic latching relays.

+ Uses lower-than-noise op-amp chips.

+ Built-in speaker with cavity.

+ Built-in 11.1v (12.6v) Li-Ion Battery.

+ bnc antenna interface.

Occupation:

Support full mode: usb, lsb, cw, am, fm (ssb mode receives well but transmits poorly. am and fm modes are free and bad)

Filter dsp filter: 4000, 2500, 1700, 500, 200, 100, 50hz passband

Functions DSP functions: automatic gain control (AGC), noise reduction (NR), Xmit voice trigger (VOX), RX attenuator (ATT), TX noise gate, tx unit control, volume control, dbm/s meter.

Sidebar/Carrier Suppression SSSSB Transmit: better than -45dbc, imd3 (dual tone) -33dbc, Receive: better than -50dbc

Multi-band support, continuously adjustable 10m over 80m frequency range (from 20khz..99mhz, lossy performance)

Open source firmware, built with arduino ide; allows experimentation, new features can be added, contributions can be made via sharing, software complexity: 2000 lines of Vovox code based on the

Software-based Vovox code available for fast full control (qsk and half qsk operation) or rx/auxiliary switch tx to be in digital mode (no cat or ptt interface needed), using the

external control of the ptt/pa outputs in digital mode (no cat or ptt interface required), using fully digital and software-based ssb class transmitters: control of the phase of the sill si5351 (via a small frequency change i2c at 800kbits/s) and the amplitude of the pa (via a pwm pa key shaping circuit)

Software-based all-digital SDR receiver stage (optional): samples I/Q (complex) signals from quadrature sample detector digital mixers and mathematically performs a 90-degree phase shift (Hilbert transform) in software and by adding Atten sidebands

Three independent switchable analog faders from the front receiver (0db,-13db,-20db,-33db,-53db,-60db,-73db)

Receiver noise floor mds: -135dbm at 28mhz (200hz bw)

Receiver Receiver Front End Selectivity: +/-2khz Steep 45db/ Tuning Frequency Roll Off

Obstruction Blocking Dynamic Range: 123db at 20khz Offset, 78db at 2khz Offset

cw Decoder, Direct//b Keyer

vvfo a/b + rit and split, and corresponding relays via i2c

cat support cat with filter switch (using kenwood TS-480 protocol)

Package includes:

-1 x Transceiver

-1 x microphone

-1 x charger

-4 x machine feet