What are the rules for talking on a walkie-talkie?

In the amateur section, there are very strict standards of communication, in the examination of the license will be specialized training. The following provisions apply to the exemption of 409M:

(1) do not arbitrarily change the transmission frequency of the Entel Marine radio, increase the transmission power (including additional installation of rf power amplifier), do not arbitrarily external antenna or switch to other transmitting antenna;

(2) the use of all legitimate radio business shall not have harmful interference, once found harmful interference, should immediately stop using, and take measures to eliminate the interference before continuing to use;

(3) the use of public Entel Walkie Talkie, its communication quality is not protected by the radio regulatory authority, should withstand the normal operation of other radio services may be interference.

HT944-VHF Marine Radio

What is the communication distance of the intercom?

General communication distance within 2-3 km can be regarded as short distance communication, for individual users, can choose and buy civilian walkie-talkie. For the unit users, through the application can choose a small power walkie-talkie, if in order to ensure the communication effect, can choose professional conventional walkie-talkie.

Need to communicate within the city limits, communication distance in 3-10 km, can consider buying a professional walkie-talkie. If it is further away, it is better to use base station to communicate with handheld walkie-talkie, or vehicle-mounted station to communicate with vehicle-mounted station base station. We can use vehicle-mounted walkie-talkie with higher output power.

If users need further distance or better communication quality, they can consider using a cluster intercom if they do not have a network. Due to the support of radio network, the communication distance of cluster walkie-talkie is relatively long, and the effective distance is up to 15-30km. This kind of walkie-talkie needs network support, so once it is disconnected from the Internet, just like the mobile phone is disconnected from the Internet, even if the two parties are face-to-face, they cannot call each other.