Good conditions for maritime intercom signal

The communication distance of maritime radio is generally far, because the environment is relatively open, reducing the loss of radio waves. But relying on the environment alone can not make the maritime VHF radio have a good communication signal. Here are some methods to improve the signal intensity of marine radio.

1. The transmission power and the transmission power of marine radio are generally adjustable, as low as 1W and 5W. Generally, the use of high power can greatly improve the signal strength
2. An antenna converts the electrical energy of a VHF marine radio into a radio signal and then sends it out. It can be seen that the antenna performance directly affects the strength and weakness of communication signal. When selecting antenna, pay attention to the frequency of marine radio. The frequency of normal marine radio is v-segment, so the antenna of v-segment should also be used. It is necessary to select the appropriate antenna to transmit the transmission power completely, otherwise it will lead to the aging of the power amplifier, and even burn the marine radio in serious cases.
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4. Feeders, in addition to handheld VHF marine radio, also have shipboard, and the shipboard needs feeders. The feeder is used to connect the carrier and antenna to improve the communication distance of the marine radio. For the selection of feeders, it is necessary to select the feeders with low loss and high quality welding process. If the feeder transmission is not good, the transmission power of the shipboard can not reach the antenna normally, which will lead to the power back impact. If this happens for a long time, the power of the shipboard will be reduced, which will seriously affect the communication signal and distance.
5. Fixed position and good fixed position can ensure antenna gain (the best position in the middle of the roof). For example, when 3dB gain antenna is fixed in the trunk, the actual antenna can display the benefit of 0dB when using 3dB gain antenna in this position because the fixed position is negative 3 gain.

All of the above are some methods to improve the signal of maritime VHF radio. If your marine radio has a signal weakening phenomenon, it can be improved by the above method.