Which is better 9 Kilohertz or 2.5 Megahertz?

Answer 1

Depends; better for what?

Answer 2

In general, a higher frequency like 2.5 megahertz (MHz) is better for transmitting data faster and over longer distances compared to 9 kilohertz (kHz). However, the choice of frequency depends on the specific application and requirements, so it's important to consider factors such as interference, propagation characteristics, and equipment compatibility.