In reality CB radio operators all over the US use amplifiers regularly the FCC lacks the enforcement capability to stop almost any of them, unless they are creating significant interference with sensitive equipment and/or broadcasting music. Certified radios are supposed to limit output power to 4 watts for AM transmission and 12 watts for SSB transmission modifications to transceivers, or the use of external amplifiers are – technically – in violation of these regulations and subject to penalties. In the United States the CB radio service is regulated by the FCC, which inspects samples of mass produced radio models sold in the country and applies licenses to the radios themselves, not the operators. up and down a highway you’re driving on). The amount of RF power that is actually emitted also depends on the antenna, coax cable, and ground used – mismatched impedances, lossy feedline, and poorly tuned antenna can all reduce the effective power output, but a well-thought-out antenna design can be used to direct output power in a particular direction (e.g. Power output varies based on the configuration, ranging from a few milliamps at low power settings up to 12W with a single-sideband transceiver at maximum power. Wiring for a CB transciever (note fuses close to battery)

Many newer CBs also have a mode switch that permits switching between AM and upper/lower single sideband (SSB) while this does not give the radio 120 channels as some sellers claim, it does allow each channel to support an upper sideband (USB) and a lower sideband (LSB) conversation. Older CBs used a 23 channel system, whereas modern band allocation gives 40 channels.

Power Of Different CB Radio TypesĬB radios come in many makes and models with different feature sets, including different numbers of channels and modulation modes. In combination with a good antenna an amplifier can overcome these shortcomings, leaving you with a robust, low-cost backup communication system when other infrastructure fails. However, most factory-build CBs only transmit between 4 and 12 watts of output power – fine for short distance communications over flat terrain, but often not enough for reliable communications over long distances, in mountainous areas, or during other less-than-ideal conditions. CB radios are inexpensive, rugged, mobile, and widely available, making them well-suited to use as a SHTF communication system.

How to install car radio band expander