This is a question for @aldoir and @canopycages
About DC-DC, in general, I would recommend using an industrial solution.
Input voltage:36V-75V
Power: 370W
Output Voltage Range:8.2V
Current: Max 45A
Output voltage can be changed to 5V
I got sick of waiting for the ‘real soon now’ PoE hat and ordered one of these:
The specs limit the input to 14V, which is a bit of a pity, but it does claim 4A output.
Not perfect (and not PoE), but it is another option.
I’ve been thinking of something like I’ve seen here.
Is heat in the summer and cold in the winter any consideration for having the Pi outside? How about the FlightAware stick?
Obviously I have no idea where you’re located and what your ambient temperatures are but this is a plot of a years worth of temperatures from my two receivers. The one on the left is the feeder that’s in my loft and the one on the right is a sealed box mounted 33ft up in the air. Last summer was one of the hottest we’ve had for years.
No issues with either of them complaining about overheating.
Neither Pi (both Pi 3B) have any heatsink or fan on them.
To be fair you are close to the sea and that usually results in moderate temperatures and some wind?
Were those with a fan or just the bare pis?
Also it probably also depends on the enclosure you use.
Thanks for the temperature charts.
I am right across the Mississippi from St. Louis, MO.
We experience temperatures in the 80’s to 90’s or above during daytime in the summer.
If you have room in the box installing a fan helps quite a bit to keep the RPi temperature down.
Just a regular 12V fan on the 5V supply should work depending on the model i guess.
I’ve got this fan in use but without a case. (https://www.amazon.com/ARCTIC-F12-Standard-Configuration-possible/dp/B002KTVFTE)
You could also install something to shade the box if you want to take it to the extreme.
I believe the box keithma is using is already double walled which provides some insulation.
It can make a difference to the external receiver but the internal one doesn’t get additional cooling from wind. It was very hot last year.
Bare, naked Pis.
I reckon you’re likely to need some additional cooling, even if it’s just getting some airflow across the Pi.
Yes an additional cooling is required…It will help u solve your problem
Is that ambient temp in F or Pi temp in C?
Sounds like ambient temperature for the US.
(KSTL: Glen England ADS-B Feeder Statistics - FlightAware)
Being from the US also makes F much more likely 
