More on wifi range - Pi PICO W Oil level sensor

That was my first real job -- 15 kw of it at around 100 MHz. Why is that fluorescent tube lighting with nothing attached to it?

But what do I do with all these spare Pringle tubes:-?

Tell them to marry Meghan Markle and write a whiny book

Build a Hamster Habitat.

I just say that once I built a Pringles antenna at a training course, and it does work. Inside the tube there is a threaded metal rod with a number of nuts and washers that had to be put at precise distances according to the instructions we followed.

Black magic.

We did not have any tool to measure gain, but indeed the router read a higher signal that with its manufacturer antena. And it was directional. I can not give any number because I don't remember where my notes are.

Back to the original subject of the thread and to topic; Some of the designs out there just put an USB dongle inside the tube, and they work, somehow. No need to actually have a wifi card with socket for the antenna. If the Pi is small enough (I have no idea) there will be designs out there using it.

I build a 2m quagi at one point, speaking of primitive.