R1.02W 3-5W USDX+ SDR Transceiver | All Mode 8 Band HF Ham Radio QRP CW Transceiver 80M/60M/40M/30M/20M/17M/15M/10M

USDX+ 8-Band SDR QRP Transceiver 3-5W | All Mode HF Radio with DSP for 80m to 10m Bands

Elevate your QRP adventures with the R1.02W 3-5W USDX+ SDR Transceiver, an advanced all-mode HF ham radio designed for portable and field operations. This upgraded USDX+ model expands to 8 bands (80m/3.5MHz, 60m/5.3MHz, 40m/7MHz, 30m/10.1MHz, 20m/14MHz, 17m/18.1MHz, 15m/21MHz, 10m/28MHz), supporting LSB, USB, CW, AM, FM, and digital modes like FT8. Delivering 3-5W output power with efficient Class-E amplification, it features embedded DSP (Digital Signal Processing) for noise reduction, AGC, and filtering, plus SDR architecture for software upgrades.

Housed in a rugged aluminum case with a crisp 1602 LCD display and stable TCXO (0.5PPM), the R1.02W includes VOX, built-in keyer, and easy firmware flashing via USB. Ideal for SOTA (Summits on the Air), POTA, and DXing, this open-source-inspired transceiver offers exceptional value for ham radio enthusiasts seeking multi-band versatility in a compact 10cm x 7.5cm x 3cm form factor.

3W-5W USDX+ HF Transceiver Shortwave QRP SSB/CW Transceiver All Mode 8 Band Upgraded Version Of USDX

Note:
-Due to different production batches, the goods may have different appearance but with the same effect. The picture is for reference only, subject to the actual product delivered!

Description:
This is a shortwave QRP SSB/CW transceiver. Ultra-small size makes it easy to carry for outdoor use. It boasts a 1602N LCD screen and a built-in speaker. It supports connection to a PC and uses FT8, JS8, FT4 and other digital mode software control, and supports CW automatic decoding.

Features:
– 8 bands: 3.5Mhz～3.9MHz, 5351.5-5366.5kHz, 7MHz～7.3MHz, 10.1MHz～10.150MHz, 14MHz～14.350MHz, 18.068 MHz～18.168MHz, 21MHz～21.450MHz and 28MHz～29.700MHz
– Excellent PCB layout design in line with high-frequency circuit design principles to ensure excellent performance
– Whether using an 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 upgrading
– 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 TCXO for KDS, frequency accuracy is better than 1PPM, frequency stability is better than 0.5PPM
– Ultra-small size: 83 x 38 x 124mm/3.3 x 1.5 x 4.9″ (excluding protruding parts)
– Abundant interfaces (CAT, PTT OUT, MIC/KEY, K-head microphone)
– All LPF parts use 100V C0G/NP0 capacitors
– Use original magnetic latching relays for Omron
– Use op amp chip with lower noise than LM4562
– Built-in speaker with cavity
– BNC antenna interface

List of Functions:
– 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
– All-Mode support: USB, LSB, CW, AM, FM
– DSP filters: 4000, 2500, 1700, 500, 200, 100, 50 Hz pass-band
– DSP features: Automatic Gain Control (AGC), Noise-reduction (NR), Voice-triggered Xmit (VOX), RX Attenuators (ATT), TX noise gate, TX drive control, Volume control, dBm/S-meter
– SSB opposite side-band/carrier suppression Transmit: better than -45dBc, IMD3 (two-tone) -33dBc, Receive: better than -50dBc
– Multi-band support, continuously tunable through bands 160m-10m (and from 20kHz to 99MHz with loss in performance)
– Open source firmware, built with Arduino IDE; allows experimentation, new features can be added, contributions can be shared via Github, software-complexity: 2000 lines of code
– Software-based VOX that can be used as fast Full Break-In (QSK and semi-QSK operation) or assist in RX/TX switching for operating digital modes (no CAT or PTT interface required), external PTT output/PA control with TX-delay
– Simple to install modification with 8 component changes and 8 wires
– Lightweight and low-cost transceiver design: because of the EER-transmitter class-E stage it is highly power-efficient (no bulky heatsinks required), and has a simple design (no complex balanced linear power amplifier required)
– Fully digital and software-based SSB transmit-stage: samples microphone-input and reconstruct a SSB-signal by controlling the phase of the SI5351 PLL (through tiny frequency changes over 800kbits/s I2C) and the amplitude of the PA (through PWM of the PA key-shaping circuit)
– Fully digital and software-based SDR receiver-stages (optionally): samples I/Q (complex) signal from Quadrature
– Sampling Detector digital mixer, and performs a 90-degree phase-shift mathematically in software (Hilbert-transform) and cancels out one side-band by adding them
– Three independent switchable analog front-end receiver attenuators (0dB, -13dB, -20dB, -33dB, -53dB, -60dB, -73dB)
– Receiver Noise floor MDS: -135 dBm at 28MHz (in 200Hz BW)
– Receiver Front-end selectivity: steep -45dB/decade roll-off +/-2kHz from tuned-frequency
– Blocking dynamic range: 20kHz offset 123dB, 2kHz offset 78dB
– CW decoder, Straight/Iambic-A/B keyer
– VFO A/B + RIT and Split, and corresponding relay band-filter switching via I2C
– CAT support (TS480 subset)

Specifications:
– Type: HF QRP SDR Transceiver
– Mode: SSB/CW
– Rf output: 10W max at 13.8V exit DC in
– Frequency range: 3.5-30MHz
– Built-in MIC
– Antenna/connector: 50Ω/SO-239

– With built-in 4000mah lithium battery