kv4p HT Open-Source USB-C Ham Radio

kv4p HT Open-Source USB-C Ham Radio

kv4p HT is an innovative open-source VHF/UHF radio module that transforms any compatible Android smartphone into a fully functional handheld ham radio transceiver. Designed to plug directly into the USB-C port, it adds real off-grid communication capabilities—including both voice and text—without requiring an additional battery.

Powered by your phone and built around the ESP32 wireless controller paired with the SA818 radio module, the kv4p HT provides reliable amateur radio operation for users holding at least a Technician-class license.

Compact, lightweight, and extremely portable, it fits easily into a pocket and offers a modern alternative to traditional HT radios while preserving full ham-radio functionality.

Specification

• Radio Type: Open-source VHF or UHF handheld transceiver module

• Connectivity: USB-C direct connection to Android smartphones

• Core Chipset: ESP32 wireless module

• RF Module: SA818 VHF/UHF transceiver module

• Operation Bands: VHF or UHF (variant dependent)

• Communication Modes: Voice and text over amateur radio frequencies

• License Requirement: Technician-class amateur radio license or higher

• Power Source: Powered directly from connected smartphone

• Portability: Ultra-compact, pocket-sized design

• Battery Requirement: None (no internal battery)

• Use Case: Off-grid communication, emergency comms, portable ham radio use

• Hardware: Fully open-source design

More information: https://www.kv4p.com/