During my first few flights I noticed that I would lose telemetry on the radio when the aircraft was around 100ft in elevation and I was standing, not quite underneath, but in close proximity.
When I flew at lower altitudes and over 400ft away from the transmitter, I never lost telemetry.
The antenna on the Iris was in the up position and the radio side antenna was slightly angled.
I do live in an area with a substantial amount of RF.
Unfortunately I didn't have a ground station running only the radio.
Just curious if anyone else has experienced this.
Replies
If I'm reading the attached logs correctly, it looks like to me that the RSSI increased every time the BarAlt increased. I don't see where it dropped out.
In the future I plan to bring my MS Surface with me as a ground station. Should help with this sort of thing.
Edit: Derp, I just thought it through. The RSSI is the aircraft side not the remote.
I believe the IRIS monitor the RSSI signal strength and logs it. So it should be possible to fly it around and then take a look at the logs and see where things get bad. Plot a graph of the signal strength or errors and compare it to the GPS plot and see what might be going on.
I however have not notice any issues with it other than the signal strength not being report correctly in Mission Planner.
I've been noticing this with mine too. Sometimes it's really good and others it's not. I think by messing with the radio settings helps get better signal. Also different 900MHz antennas might help. http://copter.ardupilot.com/wiki/common-using-the-3dr-radio-for-tel...