Okay, well, I'm a network professional with a specialty in wireless and a keen interest in historical wireless networking, and "non-standard" stuff is also quite interesting. I'm no Richard Easton.

I want to start with a disclaimer, by no means would I, nor should I be interpreted to be saying or implying that any contribution, regardless of source, isn't valuable. Whether it comes from a woman, or man, white, black, or any color in-between, non-binary, gay, bi, trans, whatever. The contributor is valuable and their contribution is always valued.

That being said, FHSS, has its uses, and it's been used in wireless. It's a valid technology that should be recognised as such. As with many things, it wasn't a singular effort, and nobody should imply otherwise.

As others have pointed out, the most commonly known technology which employs FHSS is Bluetooth; and trust me, trying to track down issues caused by BT interference is a nightmare because of it. Generally I avoid the problem by not using the 2.4ghz ISM band as much as possible, but I digress.

For those saying it's not part of 802.11, it actually is. It's an old part of the protocol which has long since been replaced and it is considered obsolete by the IEEE 802.11 group.

However, in the 802.11 protocol, sometimes called 802.11 prime (Wikipedia calls it "legacy"), it states: "[802.11] specified two raw data rates of 1 and 2 megabits per second (Mbit/s) to be transmitted via infrared (IR) signals or by either frequency hopping or direct-sequence spread spectrum (DSSS) in the Industrial Scientific Medical frequency band at 2.4 GHz." https://en.wikipedia.org/wiki/IEEE_802.11_(legacy_mode)

All I want to really add, is that networking is a team sport. If companies and people didn't work together to make it function, then it wouldn't work.

Only by collaborating and working together towards improvement and an increase in the ability of the technology to work across all platforms, vendors, manufacturers, and devices, can we get it to function at all. This fact is as true now as it was when FHSS was invented. Everyone needs to work together in order to make any real progress. Otherwise, all of our wifi stuff would "speak" different languages, and nothing outside of a single companies product line, would work with anything else.

Everyone's contributions have helped wifi get to it's current state, and that should never be forgotten.