RTDF function means receive and transmit on two differnt frequency. Very few amateur radio have this function, Today let us learn how does the RTDF function works on Retevis RT95.
On the Retevis RT95, there is a single channel for receiving and receiving different frequencies. When this function is enabled, the frequency at the top of the screen is receiver only and the frequency at the bottom of the screen is transmitter only. This function can only be operated in VFO mode;
After this function is enabled, press the A/B shortcut keys to switch, and then adjust the frequency with the hand microphone. Note that offset is automatically hidden when RTDF is enabled.
we do normal transmit and receive, such as the main channel (large character) 145.1500Mhz, which can receive and transmit at this frequency, the sub-channel (the lower frequency small print) 439.8500Mhz, can also be used as transmission and receive;
But here on RT95 once the RTDF is enabled, TX will appear on the right side of the screen. At this point 431.1500Mhz is just a transmission frequency. 145.1500Mhz is used only as a receiving frequency.
We can only display one reception frequency on the screen when we connect the repeater and set it up on the platform. However, after this function is enabled, we can use the upper frequency as the relay receiving frequency and the lower frequency as the relay transmitting frequency.
As mentioned above, the offset is automatically hidden when RTDF is enabled.
There is no need to set the difference frequency here. The receiving frequency of the repeater is used as the transmitting frequency of the RT95 mobile radio, and the repeater can also be received. If the transmitting frequency of the repeater is used as the receiving frequency of the mobile radio, the mobile can be received. But don't forget to set transmit and receive CTCSS/DCS tone.