Description
🚀 What is the Kaizen Labs kv4p HT?
kv4p HT by Kaizen Labs is an innovative open-source VHF radio that instantly transforms your Android smartphone into a powerful handheld ham radio. Talk, text, and stay connected completely off-grid—all you need is at least a Technician-class amateur radio license!
Simply plug the kv4p HT into your phone’s USB-C port, and you’re ready to roll. It’s fully open-source (GPL3): the Android app, ESP32 firmware, PCB designs, and even 3D-printable files are all openly available.
Compact and pocket-friendly with no internal battery, it’s the ideal companion for your go-bag adventures, emergency kits, or car glove compartment. 🌲🚙⛺
NOTE: kv4p HT is proudly an open-source initiative. Kaizen Labs offers fully assembled v2 boards and complete field kits for operators who want immediate convenience rather than DIY building. All design files remain accessible on kv4p.com, encouraging customization and self-building.
NOTE: As of 2025-02-25, all kv4p boards include the SA818 module pre-installed.
🔥 Features & Specs
- 📻 Pure ham radio operation, 100% off-grid reliability
- 🎧 Crystal-clear 44kHz 8-bit ADC/DAC audio with adjustable filters & squelch
- 💬 APRS-based texting with instant notifications like traditional SMS, powered by a built-in 1200 baud modem
- 🔍 Scan through limitless channels, memories, and groups effortlessly
- 🔋 Zero internal battery—powered directly by your smartphone
- ⚡ Energy-efficient 1 watt transmission—miles of coverage without draining your phone’s battery
- ♿ Accessibility-focused: live closed captions (on supported phones), animation toggle, sticky PTT button with intuitive haptic feedback
📦 What’s in the Kaizen Labs kv4p HT Field Kit?
- ✅ kv4p HT Main Board v2, including:
- Microcontroller (ESP32) preprogrammed, USB-C connection for phone
- Integrated SA818-V RF Module
- VHF low pass filtering
- SMA antenna connector
- Essential components (buttons, LEDs, etc.)
- ✅ Durable 3D printed protective case
- ✅ USB-C ergonomic “U-shaped” connector
- ✅ High-performance Dual Band (2m/70cm) antenna for extended range 📡
⚠️ What’s NOT Included?
- ❌ Android smartphone
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