A compilation of radio & related material I think is useful as a HAM radio operator.
Compiled this information as a PDF file on April 22nd, 2024

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Suggestion welcomed

_ Source: https://kv4p.com _

### What is it?

kv4p HT is a homebrew VHF radio that makes your phone capable of voice and text communication completely off-grid with at least a Technician class amateur radio license.

The radio simply plugs into the USB C port on your Android smartphone and transforms it into a fully-fledged handheld radio transceiver. It's completely open source (GPL3): the Android app, ESP32 firmware, PCB designs, and 3D printer files.

It's small enough to fit in your pocket and take anywhere, and since it has

# Choosing the Right Battery for Your Ham Radio

When setting up a ham radio station, selecting the right battery is as crucial as choosing your transceiver and antenna. A good battery ensures that you have reliable power for your operations, whether at home or in the field. With various types of batteries available, it’s essential to understand your options and select one that meets your needs. Here’s a guide to help you choose the right battery for your ham radio.

## 1. **Understand Your Power Needs**

### Determine Your Equipment’s Power

# Transform Your Old Cell Phone into a Ham Radio Tool: A DIY Project

Do you have an old cell phone gathering dust? Instead of letting it sit idle, why not repurpose it into a handy tool for your ham radio activities? In this blog post, I’ll guide you through a fun DIY project that transforms your old smartphone into a dedicated logging device and Morse code practice tool. Let’s get started!

## Why Repurpose Your Old Cell Phone?

As ham radio operators, we’re always looking for ways to improve our skills and streamline our operations. An old cell phone can serve as a versatile assistant, allowing

### Building a 10-Meter Dipole Antenna: A Detailed Step-by-Step Guide

Hello everyone!

If you’re looking to dive into the 10-meter band, building a dipole antenna is one of the most straightforward and effective ways to get started. In this guide, I’ll walk you through everything you need to know to construct a 10-meter dipole antenna, including materials, tools, and detailed instructions.

#### What You'll Need: