Feature 1 ADVANTAGES: SDR transceiver radio receiver has power and Tsukuba swr indication; battery capacity 6000mah; cw tone and cw side tone volume can be adjusted! The use of power mos tube is not bs170! Exquisite aluminum oxide shell! Side ptt! Built in mic! 2 8 BAND: uSDR uSDX is a pocket sized 8 band SSB CW QRP transceiver with built in lithium battery, built in microphone, PTT button and very low RX current consumption. It is a great companion for SOTA, POTA or any other portable activity. 3 HIGH FREQUENCY: Simple, fun and versatile cxp ssb HF transceiver with built in dsp and sdr functions; Eer e class drive ssb transmit stage; 13.8v power supply approx. 10w ssb pep output. 4 SOFTWARE: V based software can be used for fast and complete rogue operations (qsk and semi qsk), or auxiliary execution indigital mode (without cat or ptt interface)for rx/tx switch, with tx/pa delay control external ptt output. Simpleinstallation and modification, 8 component changes and 8 lines. 5 CW DECODER: CW decoder, direct/iambic, a/b keying, Vfo a/b, rit and frequency division, and switch the corresponding relay withfilter through i2c Cat support (TS480 subset), which can be streamed through CAT transmission of sound, keystrokes anddisplay text.Item Type: SDR Transceiver Radio ReceiverMaterial: Aluminum AlloyFilter: 4000, 2500, 1700, 500, 200, 100, 50hz passbandDSP 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 -meterSsb reverse sideband or carrier suppression transmission:better than -45dbc, imd3 (dual tone)-33dbc: reception: betterthan -50dbcSSB transmitter phase is completely based on digital and software: control the phase of the si5351 PLL (through smalli2c frequency changes over 800kbit/s) and the amplitude of the PA (through pwm to pwm)to test the microphone input andreconstruct the SSB signal. Key shaping circuit PA)All digital and software based SDR receiver stage (optional): I/Q signal (complex) is sampled from the quadraturesampling detector digital mixer, and perform 90 degree phase shift (Hilber transform) software in it and deletesidebands by addingMds receiver noise level: -135dbm (200hz bw) at 28mhzPre receiver selectivity: steep frequency adjustment -45db/ten times roll off /-2khzBlocking dynamic range: 20khz offset 123db, 2khz offset 78dbThree switchable analog controllers independent of the front receiver: 0db, -13db, -20db, -33db, -53db, -60db, and -73dbLightweight, low cost transceiver: Thanks to the eer electronic liquid level transmitter, it has high powerefficiency (no need for a huge heat sink)and simple design (no need for complex balanced linear power amplifiers)Built in Lithium Polymer Battery: 6000mAhVoltage: 100240V Package List1 x Transceiver1 x Microphone1 x Power Cord1 x Instruction Manual