What frequency range is categorized as Super High Frequency (SHF) and commonly used for microwave communication, satellite links, and radar applications?

Introduction / Context:
The radio spectrum is divided into named bands used by different technologies. Microwave terrestrial links, satellite communications, and many radar systems occupy the Super High Frequency (SHF) band due to favorable propagation and available bandwidth.

Given Data / Assumptions:

• The question asks for the numeric frequency range used for microwave, satellite, and radar.
• We use the standard ITU naming of SHF.
• Frequencies are expressed in MHz for the options.

Concept / Approach:
SHF spans 3 GHz to 30 GHz, which is 3000 MHz to 30000 MHz. This band includes common microwave backhaul (e.g., 6, 11, 18, 23 GHz), many satellite downlink/uplink allocations (e.g., C, X, Ku, parts of Ka), and numerous radar bands. Lower LF/MF bands are used for long-distance ground-wave/AM radio; EHF is higher still (30–300 GHz).

Step-by-Step Solution:
Recall SHF numeric definition: 3 GHz ≤ f < 30 GHz.Convert to MHz for consistency with options: 3000–30000 MHz.Match with the option that lists this range exactly.

Verification / Alternative check:
Satellite bands: C (~4–8 GHz), X (~8–12 GHz), Ku (~12–18 GHz), Ka (~26.5–40 GHz; note that higher Ka straddles SHF/EHF boundary). Microwave fixed links often use 6–38 GHz allocations, centered within SHF.

Why Other Options Are Wrong:
Low Frequency and Medium Frequency: Far below microwave; used for LF/MF radio services.

Extremely High Frequency: ≥ 30 GHz; above most traditional microwave and many satellite downlinks.

None of the above: Incorrect because SHF 3000–30000 MHz is correct.

Common Pitfalls:
Mixing up units (MHz vs GHz) or confusing SHF with EHF; SHF tops out just before 30 GHz.

Final Answer:
Super High Frequency: 3000 MHz to 30000 MHz