# Doodle Pro Tips

## Pro Tips for Resolving Radio Connectivity Issues

**1. Too Close?**\
Ensure that your air and ground radios are at least 2 feet apart. Doodle radios are powerful, and if they are too close, they may create interference with each other.

**2. Too Soon?**\
Give it time. Each radio takes about 60 seconds from power-up to fully boot its system. Ensure both the air and ground radios have been powered on for at least 60 seconds before checking connectivity.

**3. Multiple Aircraft?**\
Be mindful of multiple Doodle radio pairs in the same environment. Doodle radios are not frequency hopping and are shipped with channel 3 selected by default. If multiple pairs are on the same channel, they will interfere with each other. Make sure to select [different channels](/ecosystem/controller/pilot-pro/operating-handbook/radio-modules/doodle-labs-radio-module/doodle-channel-selection.md) for each pair.

**4. Determine Which Path is Broken**\
Pilot Pro and the tablet have separate communication links. It’s possible for one to be connected while the other is not. If the Pilot Pro’s LED is blue, it indicates no connection. A green LED means it’s connected.

**5. Environmental Radio Interference**\
Doodle radios operate on the 2.4 GHz band, similar to typical Wi-Fi devices. We default to channel 3 to minimize interference with common Wi-Fi routers. However, you may need to perform a [channel scan ](/ecosystem/controller/pilot-pro/operating-handbook/radio-modules/doodle-labs-radio-module/doodle-channel-selection.md)to find a less congested channel.


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