Hi, this reply will be a little bit off topic, because your question was specifically about 4.4.1, and this reply is more generally about epmp in 2.4ghz.
The first thing I’ll say, is I’ve been also a little bit disappointed about the seemingly lack of development ongoing in 2.4ghz by Cambium.
However, to be fair to Cambium, the primary differences between the epmp1000 and the epmp2000 in 5ghz basically boil down to the digital filter, and the beam steering antenna. Cambium has said that neither of those technologies would be particularly useful in 2.4, due to less spectrum and wider propogation inherent in 2.4ghz. I’m not sure I 100% agree with them, but that is Cambium’s reasoning for not having a 2.4Ghz ePMP2000.
And then, with the ePMP3000, it is based on an AC Wave2 chipset, and the chipset manufacturers really don’t make that in 2.4 - so again, Cambium says there is no viable option for a ePMP3000 flavour at 2.4Ghz.
The good news is that the next generation (presumably the 4000) is apparently based around a chipset which contains both 2.4 and 5Ghz frequencies, so I expect we will see future development. I don’t know that for sure, but it seems to make sense based on what we know at this point.
And the final piece of info I can give you is that we also initially struggled with our decision on whether to go cambium or to continue struggling with our non-cambium deployments. We had frankly almost given up on the 2.4ghz spectrum, just thinking it was too polluted to be useful. We finally took the plunge, and this thread from 3 years ago tells you our results switching from the other brand, to Cambium at 2.4ghz.
https://community.cambiumnetworks.com/t5/ePMP-3000-2000-and-1000/ePMP-2-4Ghz-Performance/m-p/56574