Tag Archives :Retevis

Superheterodyne receiver is to convert the high-frequency signal received by the receiver into an intermediate frequency signal through a mixer and then output the intermediate frequency signal to the detection circuit. This intermediate frequency signal is a fixed difference signal obtained by subtracting the local oscillator frequency and the received signal frequency​.  ...

RT73 is ultra-compact and full-featured, with built-in GPS, and APRS is digital / analog compatible.  ...

Help My RT3S wont key up below 150Mhz and 450Mhz, how do I get it back to normal frequency?   ...

Which NGP antenna suitable for RetevisRT73? MR200 U/V Dual Band NGP Antenna and NMO Mount  ...

How does the TimeSlot Works on RetevisRT73?  ...

How to send SMS text message on RT73?  ...

Many antennas of amateur radios are detachable, then customers can replace the higher gain antennas to extend the communication range according to their needs. However, the non-original high-gain antenna interface can't connect to our radio directly, or the antenna is too long to directly connect horizontally, we need to choose a suitable adapter to connect them. So, how to choose the right adapter?  ...

How to connect to a Brandmeister repeater on RT73  ...

Many hams like to choose amateur radios with APRS function. Do you know what's APRS? How does it work?  ...

Do you know why does a mobile car radio need to have scan function?  I think the answer is that the scan function can reduces driver distraction.  ...