What antenna for 5 watt and 100 what ham radio?

For a 5-watt ham radio, a dipole antenna is a suitable option. It consists of two metal wires, each a quarter-wavelength long, suspended parallel to each other and connected at their centers. The dipole antenna provides good omnidirectional coverage, meaning it radiates signals equally in all directions.

For a 100-watt ham radio, a Yagi-Uda antenna is a popular choice. It consists of multiple elements arranged in a specific pattern. The Yagi-Uda antenna offers higher gain and directivity compared to a dipole antenna, allowing for more focused and longer-distance communication in a specific direction.

Here's a summary of the key differences between a dipole antenna and a Yagi-Uda antenna:

Dipole Antenna:

- Suitable for low-power ham radios (like 5 watts)

- Provides omnidirectional coverage

- Simple to design and build

Yagi-Uda Antenna:

- Suitable for higher-power ham radios (like 100 watts)

- Offers higher gain and directivity

- More complex design and construction

Consider factors such as the frequency bands you'll be using, the range and direction of your intended transmissions, and your budget when choosing the right antenna for your ham radio.