Step 1: Understanding Communication Channels:
Different transmission media have different bandwidth capabilities:
- Twisted pair cables: Bandwidth is relatively low (few MHz).
- Coaxial cables: Bandwidth is moderately high, typically around \(750\ \text{MHz}\). They are commonly used for cable TV signals.
- Optical fibers: Bandwidth is extremely high, in the range of \(100\ \text{GHz}\) to \(1000\ \text{GHz}\) (THz range).
Step 2: Analyze Options:
- \(750\ \text{GHz}\) is in the optical fiber range.
- \(750\ \text{Hz}\) is very low, mainly for audio.
- \(750\ \text{MHz}\) matches the standard specification for coaxial cables.
- \(750\ \text{kHz}\) is in the AM radio range.
Required Answer: \(750\ \text{MHz}\).