2018-08-04, 07:50 PM
Hi All,
Got my Moitessier hat from the post office this morning, and all setup and tested.
Initial results have been very promising - working really nicely so far, got good GPS lock without external antenna, and quite a bit of AIS data with a fairly small antenna.
One thing I've found is that the reception / general range I seem to get with the AIS seems to change quite significantly depending on the power source.
That is to say - when I use mains with a standard pi transformer, I get significantly better range and reception than when running off 12v->USB power.
I was trying to think about possible reasons for this:
- Could it be that there is more fluctuation in voltage on the 12v circuit?
- Could it be related to grounding?
Or...any other thoughts?
It was quite pronounced and noticeable - i'll see if i have some screenshots with openCPN on my phone for comparison.
I've attached a quick picture of the setup.
Got my Moitessier hat from the post office this morning, and all setup and tested.
Initial results have been very promising - working really nicely so far, got good GPS lock without external antenna, and quite a bit of AIS data with a fairly small antenna.
One thing I've found is that the reception / general range I seem to get with the AIS seems to change quite significantly depending on the power source.
That is to say - when I use mains with a standard pi transformer, I get significantly better range and reception than when running off 12v->USB power.
I was trying to think about possible reasons for this:
- Could it be that there is more fluctuation in voltage on the 12v circuit?
- Could it be related to grounding?
Or...any other thoughts?
It was quite pronounced and noticeable - i'll see if i have some screenshots with openCPN on my phone for comparison.
I've attached a quick picture of the setup.