P-TS7 Handheld Touchscreen Works When Docked but Not Wirelessly Last updated Save as PDF Explanation If the touchscreen and dock are using different HF channels, they will not talk wirelessly. Steps to Solution With the handheld unit docked, go to the 'Setup' menu (tap the mode button on the top of the unit). Select the 'Dock' tab and verify the HF channel listed there. Select the 'Comms' tab and verify the HF channel listed there. If the channel in the 'Comms' section is different than the one in the 'Dock' section, update it to match. Undock the touchscreen and test wireless communication.