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Can you use SSB for communicating over long distances with a CB radio?

April 5, 2026

Quick Answer

SSB is not typically used for communicating over long distances with a CB radio, as CB radios are primarily designed for SSB (Single Side Band) and AM (Amplitude Modulation) modes, but only operate on the 11-meter band with 40 channels.

CB Radio Modes

CB radios can operate in two primary modes: AM (Amplitude Modulation) and SSB (Single Side Band). AM is a more traditional, simple mode used for short-range communication, while SSB is more efficient and used for longer-range communication. However, not all CB radios support SSB, and even those that do may not operate well at long distances.

Long-Distance Communication with CB Radios

For long-distance communication, SSB is the preferred mode, but not all CB radios are suitable for SSB. To communicate effectively over long distances, it’s essential to select a CB radio that supports SSB, and to use the correct frequency and modulation settings. Typically, a 4-6 kHz deviation is used for SSB on the 11-meter band, which is 26.965-27.235 MHz and other allocated frequencies. Keep in mind that even with SSB, long-distance communication can be affected by various factors, including terrain, atmospheric conditions, and interference.

Tips for Effective Long-Distance Communication with CB Radios

To maximize the effectiveness of long-distance communication with a CB radio, use a high-quality antenna that is at least 6 feet (1.8 meters) tall, and position it in a location that provides line-of-sight to the target area. Also, use a suitable amplifier, such as a low-power, 2-3 watt RF amplifier, to boost the signal. Additionally, use a good quality microphone and speaker, as well as a noise-reducing circuit or a noise-filtering device, to minimize background noise and interference.

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