Do you have to program them before use them;
no programming needed. The radio in the same frequency when out of the factory.
Easy to programming:
Install the USB driver (install driver FIRST) and software to your computer. (The files are not compatible with MAC )
Open the software, and use the programming cable to connect a radio with computer, the radio need keep power on.
Then click the Program and choose Read from Radio, all the settings will be shown on the screen, then you will be able to reset it as you like.
Click the Program, and choose Write Data to Radio will be OK
Remove the radio and connect other one, keep the radio power on
Click the Program, and choose Write Data to Radio will be reprogrammed to the same settings with the first radio.
Notice:RT7 walkie talkie can work well with H-777 radio after programming to the same frequency
Frequency Range: UHF:400-470MHz
Channel capacity: 16 channels
Frequency Spacing: 12.5kHz/25kHz
Battery capacity :1500mAH
50 group CTCSS/105 group DCS
Digital FM Radio(Press monitor Open the radio)
Voice prompt(English/Chinese): Easy to make sure if we are on the same channel Timer-out timer(TOT)
Squelch level adjustment
Auto battery save
Battery low alert
Busy channel lock-out
Bright flashlight function
PC software programmable
10 x Retevis RT7 Portable Walkie Talkies
10 x 1500 mAH Li-ion Battery
10 x High Gain Antenna
10 x Belt clip
10 x Hand strap
10 x US Charger
10 x English Use's manual
10 x Earpiece
1 x Programming Cable
1 x CD
Notice:Retevis RT7 have the same earpiece and antenna with the Retevis H-777,easy to find all of the accessories in our store.