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-. Filter: 4000, 2500, 1700, 500, 200, 100, 50hz passband. function: automatic gain control (agc), noise reduction (), 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: -45dbc, imd3 (dual tone) -33dbc; reception: -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 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 of the front receiver. 0db, -13db, -20db, -33db, -53db, -60db, and -73db. Mds receiver noise level: -135dbm (200hz ) 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 + 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 Description: USDR/uSDX is a pocket-sized 8-band SSB/CW QRP transceiver. Designed with built-in lithium battery, built-in microphone, PTT button and extremely low RX current consumption, it is a good partner for SOTA, POTA or any other portable activities. This QRP SSB/CW shortwave transceiver has a 1602 screen, built-in battery, a charger, built-in microphone and speaker. It can be connected to automatic buttons. It can also CW decoding. 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 (-480 compatible ) Spk: external speakers Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage: AC100-240V Color: Black Material: plastic Package Contents: 1 x Transceiver 1 x mic 1 x antenna Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.