USDR-USDX HF QRP SDR Transceiver Shortwave Receiver SSB / CW Transceiver 8-Band 5W Ham Radio - US Plug

• This QRP SSB/CW shortwave transceiver is a good partner for SOTA, POTA

• With a 1602 screen, a battery, a charger, a microphone and a speaker.

• Connected to automatic buttons. It can also CW decoding.

• Using durable IRF series transmitting tube

• Used to connect to an antenna (instrument base)

• Aluminum laser shell marking, all aluminum buttons, with translucent silicone buttons

• The original qcx circuit is greatly simplified, and the installed components are reduced by 50%. No complicated transformer windings. 

Function List:

• Eer e-level drives the ssb transmitting stage

• 13.8v power supply about 10w ssb pep output

• Support full modes: usb, lsb, cw, am and fm-dsp

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

• DSP Function: automatic gain control (agc), noise reduction (nr), voice trigger, voice trigger xmit, attenuator rx (att), tx noise gate, tx drive control, volume control, and dbm/s-meter

• Ssb reverse sideband/carrier suppression transmission: better than -45dbc, imd3 (dual tone) -33dbc; reception: better than -50dbc

• Support multi-band. Continuously adjustable in the 160m-10m frequency range (loss of 20khz performance)..99mhz

• Open source firmware, built in ide; allows experimentation, can add new functions, can share contributions through github, software complexity: 2000 lines of code

• V-based software can be used for fast and complete rogue operations (qsk and semi-qsk), or auxiliary execution in digital mode (without cat or ptt interface) for rx/tx switch, with tx/pa delay control external ptt output -Simple installation and modification, 8 component changes and 8 lines

• Lightweight, low-cost transceiver: Thanks to the eer electronic liquid level transmitter, it has high power efficiency (no need for a huge heat sink) and simple design (no need for complex balanced linear power amplifiers)

• SSB transmitter phase is completely based on digital and software: control the phase of the si5351 PLL (through small i2c frequency changes over 800kbit/s) and the amplitude of the PA (through pwm to pwm) to test the microphone input and reconstruct the SSB signal. Key shaping circuit PA)

• All-digital and software-based SDR receiver stage (optional): I/Q signal (complex) is sampled from the quadrature sampling detector digital mixer, and perform 90 degree phase shift (Hilber transform) software in it and delete sidebands by adding

• Three switchable analog controllers independent of the front receiver

• 0db, -13db, -20db, -33db, -53db, -60db, and -73db

• Mds receiver noise level: -135dbm (200hz bw) at 28mhz

• Pre-receiver selectivity: steep frequency adjustment -45db/ ten times roll-off +/- 2khz

• Blocking dynamic range: 20khz offset 123db, 2khz offset 78db

• CW decoder, direct/iambic-a/b keying-Vfo a/b + rit and frequency division, and switch the corresponding relay with filter through i2c-Cat support (TS480 subset), which can be streamed through CAT transmission of audio, keystrokes and display text

Interface Introduction:

• Charging: Built-in lithium battery charging port, only use the included charger! It is forbidden to use chargers by other producers

• Switch: off. Bat: built-in battery power supply. 13.8: external power supply

• DC13.8v/3a: External power interface

• Key: Automatic key body connection (a, b, single key)

• Pa: external power amplifier, ptt signal

• Mic: External microphone interface

• Uart: Serial communication (TS-480 compatible command)

• Spk: external speakers