I have four of them. They are more expensive now than they were...I paid $25 each for mine a few years back now they seem to be difficult to find for less than $150 each at least in my quick looking around.
iNET's came in two frequency bands, 900 MHz FHSS and 2.4 GHz FHSS. Of course the 2.4 variant is the international model that can be used just about anywhere in the world where the 900 MHz variant is limited to North America. There are also two different versions, the iNET and iNET II. The II is not backwards compatible with the regular iNET as the II isn't actually a FHSS device. The PHY rates of the iNET are 256 kbps and 512 kbps where the PHY rates of the iNET II are 512 kbps and 1.02 Mbps.
As far as distance goes...there is some weird timing requirements due to the hop settings so GE never recommended using them beyond 23 miles and I've never used them them beyond 15 miles. Also the way these things hop...it only leaves two maybe three clean 33 cm pairs but 900 MHz ISM is the primary user and amateurs are secondary on 33 cm.
Keep in mind, these are ancient devices. They were literally the first Narrowband IP radios on the market in 2004. They are fairly high latency (~7 ms though you can play with the size of the packet to get that down a bit, but not much). The text console (it's not CLI) via either serial or telnet (no ssh) has aged much better than the 2004 era web UI. Simple enough to use to create a bridge or even a PtMP setup...if you've done it with Ubiquti/Mimosa/Mikrotik/Canopy/etc you shouldn't have an issue. Also worth noting, they are 10BASE-T devices...so may be problematic with some switches and they do not auto-negotiate so if you are daisy chaining them...you will need a crossover cable. Encryption is not secure but current standards and it was a licensed option available for purchase (as was VLAN tagging).
Typically, I would have these setup to be an aggregation point in a field that would aggregate a bunch (few hundred) TransNet's via Moxa Serial to IP adapters and then aggregate the entire lease to backhaul via bonded T1s or 3.65 GHz MDS radios or PTP800's, etc.
Now, in my not using them for production networks I've played with them a bit. I tend to power them via Mikrotik's with PoE out because...PoE capable Tiks put out B mode power so you can strip the unused pairs off the network cable and run it up to the power terminals and as long as you are feeding your Tik less than 30V it is within the spec for the iNET. Latency aside, you need 64 kbps to transport excellent audio with a NXU-2A, 14 kbps per DMR channel, 12 kbps per P25 channel...they can do that. You could get away with using them for a lot...just not streaming video or transferring large files. You realistic max throughput with tcp traffic is going to around 270 kbps on the 512 kbps setting.
