Airspeed sensor help

Hi! I'd like build an airspeed sensor for my plane. I have MPXV7002DP sensor (original from Freescale Inc. ), and I tried circuit, what the datasheet suggest (1 uf and 10 nF paralell with 5V, and 47 pF paralell with output), but when I swithched on my 1,3 GHz video transmitter, the airspeed increasing to 30-40 km/h. After I tried 650 Hz low pass RC filter (750 ohm serial and 0,33 uF paralell)on output, the interference reduced, but still persist. Please, can anyone share the external parts value of original 3DR robotics airspeed sensor, and schematic?

Thanks for help!

filters.jpg

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