20K To 220MHz Superheterodyne SDR Transceiver QRP Ham

Meet the 20K To 220MHz Superheterodyne SDR Transceiver QRP Ham from KKMOON — a compact, versatile VFO project built for DIY radio enthusiasts. Covering a wide 10 kHz to 220 MHz range, it serves as a precise local oscillator for superheterodyne receivers, software-defined radios, DCR transceivers, and Ham QRP stations. With a 0.5 PPM TCXO clock, selectable tuning steps (1 Hz, 10 Hz, 1 kHz, 5 kHz, 10 kHz, 1 MHz), and adjustable IF offset, this module makes dialing in frequencies accurate and effortless. It features 20 band presets for quick access to common BCB and HAM frequencies, a dedicated generator function mode, and an RX/TX selector for homebrew rigs. The bar-graph signal meter (via ADC) provides at-a-glance signal strength, while the device can function as an RF/clock generator or as a local oscillator for your own receivers. It can interface with a common 128x64 I2C OLED SSD1306 display and the Si5351 module, using only two I2C lines for data transmission. Compact, battery-powered, and ready for your next project, this transceiver is an excellent choice for hobbyists and builders.

Benefits & Tips

• 2–in–1 flexibility: Use it as a precise VFO for superheterodyne receivers, or as an RF/clock generator for calibration and reference tasks.
• Rapid frequency access: 20 band presets help you jump to favorite bands and HAM frequencies in seconds.
• Easy I2C integration: Connect to a 128x64 OLED SSD1306 display and the Si5351 module with just two I2C lines for a clean, compact setup.

Product Specifications

• Name: Transceivers
• Brand: KKMOON
• Origin: Mainland China
• Certification: CE
• Display Size: 2.9 Inches & Under
• Working Range: 10 kHz to 220 MHz
• Tuning Steps: 1 Hz, 10 Hz, 1 kHz, 5 kHz, 10 kHz, 1 MHz
• Frequency Stability: 0.5 PPM TCXO clock
• Special Features: 20 band presets, generator function mode, RX/TX mode selector, S-Meter bar graph, I2C interface with SSD1306 and Si5351
• Battery: 1 × 3.7V, 600 mAh battery (included)
• Item Size: 90 × 100 × 40 mm
• Item Weight: 200 g
• Package Size: 175 × 126 × 55 mm
• Package Weight: 256 g

Package includes:

• 1 × Transceivers
• 1 × Type-C Cable
• 1 × 3.7V, 600mAh battery (included)

Warnings / Reminders

• This is a DIY VFO project intended for electronics hobbyists. Basic knowledge of RF circuits and safe handling of batteries is recommended.
• Operate at appropriate power levels and avoid interference with other devices.
• Follow proper static precautions and disconnect power before making any connections.

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