Retevis RT78 Mode D'emploi page 3

Warning:
Before using, please install the antenna to the right place, then power on. ( The radio will be
broken if transmitting when not install the antenna)
①Power and Volume switch knob.
Turn the top knob clockwise to power on, it will have a "beep" tone. Turn the knob clockwise
or counterclockwise to increase or decrease the volume.
When using the wireless microphone or earpiece, please note the setting off or auto in the
App. They two settings all will make the volume knob have no effect.
②Waterproof rubber plug (do not disassemble)
③Orange top button. (multi-function composite button)
1. [Double-click the top button] When pairing an external device such as a mobile phone, a
Bluetooth headset, a wireless PTT, or a wireless hand microphone, the "ding-dong" prompt
tone enters the external pairing state and waits for pairing with an external device.
2. [Short press] Turn the radio on or off, and use the up and down buttons to adjust the radio.
Press the Up button to search the radio by Increasing the frequency. Press the Down button
to search the radio by Decreasing frequency
3. [Long press] Turn on/off the radio prohibit transmit function. When the radio and network
intercom dual mode are used, you can choose to turn off the radio transmission function and
use only the network intercom function.
④Microphone
When speaking the signal, please keep the distance between the microphone and the mouth
about 3-5 cm.
⑤LED indicator
The radio transceiver and receive status indication, green light when receiving the signal, and
red light when press PTT to transmit.
⑥expansion interface: (not the headphone interface)
Connection for the Beidou+GPS satellite positioning option, as well as new external function
extensions.
⑦ PTT transmit button
Press and hold the PTT button and speak in normal speech. Release the PPT button to
receive the signal.
⑧Up, Down Switch Button:
1. In the intercom mode, press the up and down keys to switch the channel. Please use
WinoSmart APP (HT) to preset the channel frequency.
2. In the FM radio mode, press the up and down keys to tune the audio frequency.
⑨battery pack
Installation: Push the battery into the position along the aluminum rail track and the buckle
will automatically snap.
Remove: Press the battery clip down and pull the battery to the bottom.
2