Usdr Usdx+ V2 Plus 8 Band SDR Full Mode HF SSB QRP High Frequency Transceiver, specification: without power supply
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Usdr Usdx+ V2 Plus 8 Band SDR Full Mode HF SSB QRP High Frequency T...
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Description
Description
1. Remove the headphone and power button/microphone jack to the front panel, convenient to connect the headphone and 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 built-in speakers to double the sound
4. PCB to reserve a variety of required upgrade pad, ready to use, can be used as a DIY upgrade learning template
5. Change the QRP CW frequency quickly
6. Support CW side volume adjustment
7. Supports CW sidetones
8. This is a QRP SSB/CW shortwave transceiver. Ultra-small size for portable outdoor use (with or without batteries optional, built-in 4000MAH lithium battery) 1602n LCD display, built-in speakers, support for connecting computers using FT8, JS8, FT4 and other digital software control mode, Support CW automatic decoding
Characteristics:
1. 8 runways 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 the built-in battery and the external 13.8V power supply can achieve 8-stop power of 3-5W and reserve the SOT-223 and TO-220 package pad needed for upgrading.
4. High launch efficiency
7. KDS high-precision TCXO brand, frequency accuracy greater than 1 ppm, frequency stability greater than 0.5 ppm
8. Ultra-small size: 88x39x124mm (without protrusion)
9. Rich interfaces (cat, ptt out, mic/key, k-head mic)
10. All LPF components use 100v c0g/np0 capacitors
11. The use of op-amp chips is lower than lm4562 noise
12. An integrated cavity speaker
13. BNC antenna interface
Explanation:
1. Support full mode: USB, LSB, CW, AM, FM (SSB mode reception effect is good, but the transmission effect is poor. AM and FM mode are free, the effect is not good)
2. DSP filter: pass band of 4000, 2500, 1700, 500, 200, 100, 50 Hz
3. Function DSP function: automatic gain control (AGC), noise reduction (NR), XMIT voice trigger (Vox), RX attenuator (Att), TX noise gate, TX drive control, volume control, DBM/S instrument
4. Sidebar/carrier suppression SSSSB emission: greater than -45dbc, IMD3 (dual tone) -33dbc, receiver: greater than -50dbc
5. Support for multi-band support, in the frequency range of 80m-10m continuously adjustable (from 20khz. 99mhz, loss of performance)
6. Open source firmware, created with the Arduino IDE; allows for experimentation, new features can be added, contributions can be shared via GitHub, software complexity: 2000 lines based on
7. vovovox software code can be used for fast full control (qsk and semi-qsk operations) or auxiliary RX/TX switch for use in digital mode (no cat or PTT interface required)
8. The PTT/PA output is externally controlled by the fully digital tx delay stage and software based SSB transmitter stage: the SI5351 threshold phase is controlled (by a small i2c frequency shifter at 800 kbits/s) and the PA amplitude is controlled (by a pwm pa key shaping circuit).
9. Software-based fully digital SDR receiver level (optional): sampling I/Q (complex) signals from a digital mixer with an orthogonal sampling detector, and mathematically performs a 90-degree phase shift (David Hilbert transform) in software by adding a sideband Atten
10. Three independently switchable analog push buttons (0 dB, -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 front-end selectivity: +/-2 kHz offset at a steep tuning frequency of 45 dB/decade
13. Dynamic blocking range: 20khz offset 123db, 2khz offset 78db
14. CW decoder, direct/yambic-a/B encoding
15 VVFO A/B + RIT and split, and the corresponding relays go through i2c
16. The CAT is cat compatible with a filter switch (using the Kenwood TS-480 protocol)
Package Included:
- 1 transceiver
- 1 x microphone
- 1 charger
- 4 floor mats for the machine.
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