Question
Which of the following RF connector types is most suitable for frequencies above 400 MHz?
Answer Options
- A) UHF (PL-259/SO-239)
- B) Type N
- C) RS-213
- D) DB-25
Correct Answer: B
Explanation
As frequency increases (above 300\text{ MHz} into the UHF and microwave bands), the design tolerances for RF connectors become much tighter to maintain a clean 50\text{ Ohm} impedance and minimize power loss. The common UHF connector (PL-259/SO-239) is electrically poor above 300\text{ MHz}.
The connector type most suitable for frequencies above 400\text{ MHz} (including the 70\text{ cm} band and higher) is the Type N connector. The Type N connector uses an air-spaced dielectric and tighter tolerances to maintain low SWR and minimal insertion loss even at microwave frequencies.
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