This particular 80 Mhz link above is a shorter, but has small antennas on it. It’s actually re-using some old Force110 antennas… so what were the Force 110 antennas really? 20dBi maybe? Small antennas.
However, this one below is a 14 KM link – and this has a 32dbI antenna on one side, and a 25 dBi antenna on the other side I think. That’s due to size constraints on each side. As you can see below, signals at 14 KM are a -51, and all the chains are -57 to -54 right now. It’s a rainy crappy day today (unless you’re a duck) so the signals are typically a db or 2 better… but this is what your link should be capable of at 12Km I think.
Also, I have this one configured in TDD 75%/25% and I’m using a single 40 Mhz channel, but even in only 40Mhz mode, I get 210 Mbit download, and 70 Mbit upload right now - so about 280 Mbit aggregate.
SO - again to @KOwopetu123 - what’d I’d recommend best thing to start with is:
- Cambium’s LINKPLANNER software, and you should be able to calculate with your antennas, and which channels, and which radio configuration should give you for expected signals. You’ll want them to be in the low 50’s
- Then start with a single radio link, in 40 Mhz mode, and then aim and tweak until you achieve the signals which LinkPlanner calculated - and make sure all chains are as balanced as possible.
- Then you should have an SNR in the 30’s or 40s - and you should get modulations of DS9/DS9
- And even in a single radio, in only 40Mhz mode, you should be capable of close to 300 Mbit aggregate
And then once you have that all dialed in with the proper aiming, a know narrow channel which works well, modulations and signals and snr which are as expected… after that, you can add in the second radio, and ramp up your bonded throughput.