MP HUD ground speed changes when i turn TX on

Hi everybody . hope someone can help

I am setting up my bixler with APM2.5 2.74  and Open LRS 1w .

I notice when looking at the HUD when I turn on TX the ground speed indicator went to

70 (this is when plane is sitting still on my living room table) when I turn off tx it drops to zero .

I have tried turning tx on from 10m away but same results .

Any ideas

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  • hi again

    I check out the GPS ,I got the same problem even when GPS was disconnected.

    Next I load a old version of arduplane , but still same problem , so next I did a system reset .

    it looks like the apm firmware was corrupted .

    I have reset the APM I load quadcopter firmware first and all was fine even when the radio TX was

    next to APM.

    so then reload 2.76 adruplane . I am getting  a reading of 2-3 on the airspeed even on the bench is that normal ?

    cheers again

  • thanks guys , I will try both ideas later today and let you know

    how I get on

    cheers

  • That's probably just GPS jibberish from being under a roof and noise from your LRS.

  • Moderator
    Try moving the GPS and RX much farther apart.
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