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

please make sure your RT73 firmware version above than the 20210329 version. Because the APRS feature was added on 20210329 version firmware.  ...

ARISS report there will be an “Amateur Radio on Shuttle, Mir and ISS” Slow Scan TV (SSTV) event from June 21-26. Transmissions from the International Space Station will be on 145.800 MHz FM using PD120.   ...

David Bell who create a codeplug editor for Retevis RT73, it is also beta version.  ...

How to erase codeplug Retevis RT73 totally?  ...

When using two-way radios or walkie-talkies, we all use CTCSS/DCS or Motorola system PL tones or DPL.  It is divided into CTCSS and DCS. Both CTCSS and DCS are all used on analog two way radios. Do you know what is the difference between CTCSS and DCS?   ...

Retevis RT73 temperature-controlled cooling fan can control the air pressure and air volume of the fan through the temperature change in the vehicle-mounted station to achieve the effect of energy saving.  ...

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

How does the TimeSlot Works on RetevisRT73?  ...

Can you Monitor Different Color Code on Retevis RT73? The answer is Yes.  ...