# Unsual radio spikes

**URL:** https://discuss.bluerobotics.com/t/unsual-radio-spikes/17505
**Category:** Flight Controllers
**Tags:** navigator
**Created:** [July 22, 2024, 9:58am UTC](https://discuss.bluerobotics.com/t/unsual-radio-spikes/17505 "2024-07-22T09:58:47Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![girish](https://avatars.discourse-cdn.com/v4/letter/g/e36b37/32.png) [@girish](https://discuss.bluerobotics.com/u/girish)
#### Post date: [July 22, 2024, 9:58am UTC](https://discuss.bluerobotics.com/t/unsual-radio-spikes/17505/1 "2024-07-22T09:58:47Z")

</div>

I´am having some trouble with my rc radio calibration. I´am using a Dx6e transmitter and a AR620 receiver. To connect it to the navigator I have used a PWM to SBUS encoder and connected the output to the RC pins on the navigator. When I try to calibrate my radio the bar of each channel moves on its own. I´am using mission planner for my calibration but have encountered the same problem in QGC. My connections seem correct because I have tried connecting this configuration on a Navio flight controler and I don´t get this error. In the navigator I have changed three parameters.

- RC\_PROTOCOLS = SBUS
- SERIAL1\_PROTOCOL = RCIN
- RC\_OPTIONS = 36  
¿Is there any other parameter I should change? Any kind of help would be appreciated.