How to make H-777 with RT21 RT-5R compatible?
The necessary condition for Retevis H-777, RT21 and RT- […]
The necessary condition for Retevis H-777, RT21 and RT- […]
Automatic Packet Reporting System (APRS) is an amateur
How to use the RT82 built in GPS to report APRS location Read More »
Some radios come with a programmable, emergency alert button that helps sound the alarm in an emergency. Typically it is a big orange button either on the side of a radio by the push to talk button, or on the top of the radio. A radio dealer can custom program the button to activate an alert and alarm that will be heard by the necessary personnel to respond to emergencies.Today, let us discusss how to use RT82 emergency alarm?
RT80 is digital radio, RT1 is analog radio, how to make them talked?Under same mode(analog), Please keep same frequency and CTCSS/DCS
Radio dual standby is a very useful function,you can wait two channel signals at the same time, to avoid some important info.. How to set RT5 dual standby?
DMR digital radio HD1 and RT82, are very popular Retevis digital radio among hams. How to make HD1 communicate with RT82 in digital model?
RT90 is a dual band DMR mobile radio, support analog and digital mode.let us learn how to programme RT90 mobile radio?