Demo Board For SA818 Walkie Talkie RF Module

Specification: Key operation:

1. Key SET Press it to set mode, the data on the LED Nixie tube will be flickering, you can change it by key UP or DOWN; Press key SET again, the item flickering will shift. If the item flickering is the last one, it will quit setting mode.

2. Key UP When in setting mode, pressing key UP will increase the flickering value.

3. Key DOWN When in setting mode, pressing the key DOWN will decrease the flickering value. Otherwise, it will move down the light LED.

4. Key PTT: Pressing it will make the module into sending mode when loosening the module into receiving mode.

5. Dial Switch: When sending mode, switch to HIGH will send with high power, switch to LOW will send with low power.

6. Set TX frequency After power on, the LED close to “TXF” is on, indicates that the LED Nixie tube is displaying TX frequency. Press key SET, the highest order of frequency will flicker and can be changed by key UP or DOWN. Press key SET to set the next order.

7. Set bandwidth Press key DOWN, the LED close to “BW” is on, indicates that LED Nixie tube is displaying bandwidth, pressing key SET to set mode and press key DOWN to change bandwidth.

8 Set RX sub audio Press key DOWN, the two LEDs close to “RXF” and “CTCS” are light up, it indicates that the LED Nixie tube is displaying receiving sub-audio. Press key SET to change receiving sub audio. If the LED nixie tube display “00”, it means that no sub audio in receiving mode. If display “TCS”, it means that receiving sub-audio is analog, and if display “CDs”, it means that receiving sub-audio is digital.

9. Set volume Press key DOWN, the LED close to “VOL” is on press key SET to setting mode, and can be changed by key UP or DOWN.

10. Set SQ Press key DOWN, the LED close to “SQ” is on press key SET to setting mode, and can be changed by key UP or DOWN.

11. Set TX sub audio Press key DOWN, the two LEDs close “TXF” and “CTCS” are on, indicates that LED Nixie tube is displaying sending sub-audio. Press key SET to change sending sub audio. If the LED nixie tube display “00”, it means that no sub audio in sending mode. If display “TCS”, it means that sending sub-audio is analog, and if display “CDs”, it means that sending sub-audio is digital.

12. Set RX frequency Press key DOWN, the LED close to “RXF” is on, indicates that the LED Nixie tube is displaying RX frequency. Press key SET, the highest order of frequency will flickering and can be changed by key UP or DOWN.

13. Press key SET to set the next order

Press key UP, it will start to scan frequency and sub audio, the frequency displayed on the LED Nixie tube will increase quickly and check the module whether receive the frequency and the sub audio, it will stop when there is any signal or press key DOWN.