Which type of conductor is best for RF grounding?

Flat strap is the best choice for RF grounding due to its larger surface area in contact with the ground compared to round conductors. This increased surface area provides lower resistance to radio frequency (RF) energy, which is essential for effective grounding in amateur radio applications. The flat design also helps minimize the inductance and increases the overall effectiveness of the grounding system.

Additionally, flat strap can often be installed more easily in various configurations and is generally more durable when exposed to environmental factors. While other types of conductors may work for specific applications, the flat strap is specifically designed to enhance RF grounding performance, making it the preferred choice for achieving a low-resistance, effective grounding path in ham radio setups.