+ PCB reserves the pads required for various upgrades, which can be used out of the box, and can be used as a blueprint for DIY upgrades and learning. + Quickly switch QRP CW frequency.
+ Support CW side tone volume adjustment. + Support CW side tone tone adjustment. This is a shortwave QRP SSB/CW transceiver. The ultra-small size is easy to carry for outdoor use, 1602N LCD screen, built-in speaker, support to connect to PC and use FT8, JS8, FT4 and other digital mode software control, and support CW automatic decoding.
+ 8 bands cover 80m/60m/40m/30m/20m/17m/15m/10m. + Excellent PCB layout design in line with high-frequency circuit design principles to ensure excellent performance. + Regardless of using internal battery or external 13.8v power supply, it can reach 3-5W power in 8 bands, and reserve the SOT-223 and TO-220 package pads required for upgrades. + High emission efficiency, 80m/60m/40m/30m/20m efficiency is higher than 80%, 17m efficiency is higher than 70%, 15m/10m efficiency is higher than 60%. + High-precision KDS brand TCXO, frequency accuracy is better than 1PPM, frequency stability is better than 0.5PPM.
+ Ultra-small size: 8338124mm (excluding protruding parts). + Abundant interfaces (CAT, PTT OUT, MIC/KEY, K-head microphone). + All LPF parts use 100V C0G/NP0 capacitors.+ Use original genuine Omron magnetic latching relays. + Use op amp chip with lower noise than LM4562. + Built-in speaker with cavity. Simple, fun and versatile QRP SSB HF transceiver with embedded DSP and SDR functions. EER Class-E driven SSB transmit-stage.
Approximately 5W PEP SSB output from 13.8V supply(without battery). DSP filter: 4000, 2500, 1700, 500, 200, 100, 50 Hz passband. DSP functions: automatic gain control (AGC), noise reduction (NR), voice trigger Xmit (VOX), RX attenuator (ATT), TX noise gate, TX drive control, volume control, dBm/S meter.SSB for sideband/carrier suppression emission: better than -45dBc, IMD3 (dual tone) -33dBc, reception: better than -50dBc. Multi-band support, continuously adjustable through 80m-10m frequency band starting from 20kHz..
Open source firmware, built using Arduino IDE; allows experimentation, can add new features, can share contributions through Github, software complexity: 2000 lines of code. Software-based VOX can be used for fast full control (QSK and semi-QSK operation) or auxiliary RX/TX switching to operate in digital mode (no CAT or PTT interface required), external PTT output/PA control with TX-delay.
All-digital and software-based SSB transmitter stage: By controlling the phase of the SI5351 PLL (via a small frequency change on the 800kbits/s I2C) and the amplitude of the PA (via the PWM PA key shaping circuit). All-digital and software-based SDR receiver stage (optional): I/Q (complex) signals are sampled from the quadrature sampling detector digital mixer, and the 90-degree phase shift is mathematically performed in the software (Hill Bert transform) and cancel one by adding sidebands. Three independent switchable analog front-end receiver attenuators (0dB, -13dB, -20dB, -33dB, -53dB, -60dB, -73dB). Receiver noise floor MDS: -135 dBm at 28MHz (200Hz BW).Receiver front-end selectivity: +/-2kHz steep -45dB/decade roll-off from the tuning frequency. Blocking dynamic range: 20kHz offset 123dB, 2kHz offset 78dB. VFO A/B + RIT and Split, and the corresponding relay with filter switch through I2C.
CAT support (using Kenwood TS-480 protocol). 1 x Transceiver(External 13.8V power supply without battery). This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Transceivers". The seller is "lemontree017" and is located in this country: CN. This item can be shipped worldwide.