Retevis RB689 is our new bluetooth high power radios. Its factory set frequency is UHF(450-470MHz), now we will teach you how to expand the frequency for RB689.
Some customers want to order RB689 to talk with other raidos at FRS or PMR frequency, here is the way to expand the frequency to 400-470mhz.
First you need install the software and open it.
Press CTRL+8 and you will see the password , fill in 11882 , it will show as folows, then you can write 400-470mhz. And remember do not change the frequency hop and SPEC, keep them off.
And RB689 is also a high power radios, it has hot key to change power.
Press PTT+PF1 to turn on the radio until the prompt beeps twice, then it change to 10w.
And with the hidden screen display, you can see its channel , battery , and 3 grids is 5W, 4 grids is 10W.
So RB689 is a very nice radios to choose.
Retevis is the brand specializing in the design and manufacture of two way radios .We have own R&D team to support customized needs. Certainly, our products are approved by FCC, CE and BSCI. If you are interested, we will be very happy to send you the product list with a quote.
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