RT22 communicates with H777, this will be a question to those who first use radio.
Now I will talk you how to make the RT22 communicates with H777.
RT22 and H777 are all the analog radios.So please make sure:
1. The RX and TX frequencies must be same.
2, The CTSCC/DCS code must be same.
Then we begin learn how to programming.
Please ready a cable for programming,you can also get it on Retevis website，
here is the link:https://www.retevis.com/2-pin-programming-cable-for-retevis-h777
You can get the software here:https://www.retevis.com/resources-center.Install the H777 software.
About how to install the software,here is the blog:https://www.twowayradiocommunity.com/how-to-programme-h777
Now we set frequency and CTCSS/DCS of H777.
1.For example,Rx Freq:465.65. Tx Freq:465.65 CTCSS/DCS 67
2.Then install RT22 software,just like H777.
3.Choose the corresponding Freq Range.Click”Machine”choose”Frequency.
4.Set same frequency and CTCSS/DCS with H777. You do not need select same channel with H777,as is the following shows,about RT22,you can select channel 5 ,They will not influence talking.Set Rx Freq 465.65.Tx Freq465.65,CTCSS/DCS 67
5.After you programming about RT22 and H777,then RT22 can talks with H777.
If you cannot program,please confirm if your cable and software are correct,or please contact firstname.lastname@example.org will solve the problem for you.