Impedance matching 4ft of 20awg wire

One chip boosts the signal of the next chip so I'm assuming

MarkT:
50m of anything is going to pick up a lot of interference, You probably need to to electrically break up
that long string to reduce the interference, which really means treating as a set of shorter strips and
driving each separately / in parallel.

But then you have to synchronize each portion of course.

Any way around that.

Is the run one long straight run? That's probably at risk of damage in the next thunderstorm if so too

Are there solutions for this? It's not all in a strait run. 10m max straight run. I had 10m set up outside before for about a year, and it was still going strong.. Even after severe weather/hurricanes.