If you are on macOS the easiest way to check an SHA256 hash is run this command against the file you are checking (SHA256SUMS for example):
shasum --algorithm 256 --check --ignore-missing --warn --strict SHA256SUMS
where the hash file should look something like this
04f15c46e9d82ed36a351c1de1f9c17017c950f6d1b7233e5749440a41f141de *How_to_make_UV-9G_transmit_on_Channel_15_202311.zip
This article explains how to verify it on macOS, Windows, and Linux.
I followed the directions for macOS and Windows and they worked correctly.
I didn’t test it out on Linux.