Usdr Usdx + V2 Plus 8 Band SDR Full Mode HF SSB QRP High Frequency Transceiver, Spec: EU Plug, EU Plug, US Plug

Usdr Usdx + V2 Plus 8 Band SDR Full Mode HF SSB QRP High Frequency Transceiver, Spec: EU Plug, EU Plug, US PlugFunctions 1. Remove the headphones and the power button microphone jack to the front panel, convenient to connect the headset and the power button 2. Move the keys to the bottom of the LCD screen for a larger touch area and a more comfortable keystroke experience 3. Upgrade the built in speakers to double the sound 4. PCB to reserve a variety of upgrades required pad, out of the box, can be used as a DIY upgrade learning template 5. Change the QRP CW

Functions
1. Remove the headphones and the power button/microphone jack to the front panel, convenient to connect the headset and the power button
2. Move the keys to the bottom of the LCD screen for a larger touch area and a more comfortable keystroke experience
3. Upgrade the built-in speakers to double the sound
4. PCB to reserve a variety of upgrades required pad, out of the box, can be used as a DIY upgrade learning template
5. Change the QRP CW frequency quickly
6. Support CW side volume adjustment
7. Support CW side tones
8. This is a shortwave QRP SSB/CW transceiver. Ultra-small size for portable outdoor use, (no battery) 1602n LCD screen, built-in speakers, support to connect computers using FT8, JS8, FT4 and other mode software control digital, support CW automatic decoding

Features:
1. 8 tracks covering 80M/60m/40m/30M/20m/17M/15m/10m
2. PCB layout design in line with high frequency circuit design principles to ensure excellent performance
3. Both built-in Battery and external 13.8v power supply, can achieve 8-stop 3-5w power, and reserve the necessary sot-223 and To-220 pack pad for upgrading
4. High launch efficiency
7. KDS high precision tcxo brand, frequency accuracy above 1ppm, frequency stability above 0.5ppm
8. Ultra-small size: 88x39x124mm (without bulge)
9. Rich interfaces (cat, ptt out, mic/key, k-head mic)
10. All LPF components use 100v c0g/np0 capacitors
11. Using op-amp chips are lower than those of lm4562 noise
12. A built-in speaker with a cavity
13. BNC antenna interface

Explanation
1. Support full mode: usb, lsb, cw, am, fm (ssb mode reception effect is good, but the transfer effect is poor. AM and FM mode is free, the effect is not good)
2. Filter DSP filter: 4000, 2500,1700,500,200,100,50 Hz passband
3. Function DSP function: automatic gain control (AGC), noise reduction (NR) , XMIT Voice Trigger (Vox), RX attenuator (Att), TX Noise Gate, TX unit control, volume control, DBM/S instrument
4. Sidebar/carrier suppression SSSSB emission: superior to -45dbc, IMD3(dual tone) -33dbc, receiver: superior to -50dbc
5. Support for multi-band support, in the 80m frequency range of continuous adjustable 10m (from 20khz. 99mhz, loss performance)
6. Open source firmware, built using Arduino IDE; allows experimentation, new features can be added, contributions can be shared via github, software complexity: 2000 lines based on
7. The software vovovox code can be used for fast complete control (qsk and semi-qsk operations) or RX/auxiliary switch TX to be used in digital mode (no cat or PTT interface is required)
8. The PTT/PA output is externally controlled by the all-digital tx-delay stage and the software-based SSB stage transmitter: the phase of sill SI5351 is controlled (by a small frequency change i2c at 800 kbits/s) and the PA amplitude is controlled (by a pwm pa key shaping circuit)
9. Software-based all-digital SDR receiver level (optional): sampling of I/Q (complex) signals from a digital mixer with an orthogonal sampling detector, and mathematically perform a 90-degree phase shift (David Hilbert transform) in the software by adding an Atten sideband
10. Three independent switchable analog pushers (0db, -13 db, -20 db, -33 db, -53 db, -60 db, -73 db) from the front receiver
11. Receiver background noise mds: -135 DBM at 28 mhz (200 hz bw)
12. Receiver receiver front-end selectivity: +/-2 khz scrolling at steep 45 db/decade tuning frequency
13. Blocking dynamic range: 20khz offset 123db, 2khz offset 78db
14. CW decoder, direct/iambic-a/B keying
15. VVFO A/B + RIT and split, and the corresponding relays pass through i2c
16. The CAT supports cat with a filter switch (using the kenwood TS-480 protocol)

Package includes:
1. 1 x transceiver
2. 1 x the microphone
3. 1 x charger
4. 4 x machine floor Mats