Hi all,I have 3 planes with APM 2.5 units and one set of RFD900 modules.In any plane I choose, I get slight jitter in the servos when I turn on the RFD900 radio.So far I have installed a ferrite bead at the radio, added 0.1uf and 100uf cap at the radio and shielded the wires going to the radio.I also tried running the radio from a different power source to no avail.If I disconnect the tx and rx wires from APM but still have power applied to the radio then the jitter disappears so the noise seems to be coming through these wires.Any other tricks to try? The radio is on a shielded lead about 30cm (12inch) from the APM2.5
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I've had that jitter too. Keep in mind it really isn't anything to worry about. But I did end up turning mine down a little. Yes in MP. Do not connect like you normally do. Instead click on 3dr radio. Then click on 'load settings' make sure you copter is powered on. it should load the settings for both the radios. The one you want to turn down in the remote. It's probably on 20 try turning it down to 14 see if that helps. You hit save settings to send it off to the radio in your copter. Don't change anything else or it could get complicated :]
In MP go to the "Initial Setup" tab and then with MP not connected select "Optional Hardware" and "3DR Radio". With the radio connected to your computer and the radio on your plane powered up click on the box at the top that says 'Load Settings'. Make sure you have the correct comm port and baud rate selected in the upper right before you do this but do not click the Connect button. You should see the settings for the two radios load in to the settings. In the right window which is is the 'Remote Version' lower the Tx Power setting. Click 'Save Settings' and you are done.
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I've had that jitter too. Keep in mind it really isn't anything to worry about. But I did end up turning mine down a little. Yes in MP. Do not connect like you normally do. Instead click on 3dr radio. Then click on 'load settings' make sure you copter is powered on. it should load the settings for both the radios. The one you want to turn down in the remote. It's probably on 20 try turning it down to 14 see if that helps. You hit save settings to send it off to the radio in your copter. Don't change anything else or it could get complicated :]
In MP go to the "Initial Setup" tab and then with MP not connected select "Optional Hardware" and "3DR Radio". With the radio connected to your computer and the radio on your plane powered up click on the box at the top that says 'Load Settings'. Make sure you have the correct comm port and baud rate selected in the upper right before you do this but do not click the Connect button. You should see the settings for the two radios load in to the settings. In the right window which is is the 'Remote Version' lower the Tx Power setting. Click 'Save Settings' and you are done.
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