Depends highly on where. I wouldn't do 80 GHz at beyond 2.5 to 3.0 km (never mind 3.5 miles), but if you're going to set up a link that will do ACM, both will work... It's sort of a toss up, 80 GHz has more rain fade, but much higher allowable Tx EIRP (+18 radios going into a 51.5dBi gain dish), whereas 33dBm EIRP is the max for 24 GHz.
It also depends what sort of 80 GHz radio you use. If you use a model that allows a 1250 MHz wide channel each way FDD, that channel can use much lower-order modulations (QPSK and 16QAM) vs what an AF24/AF24HD requires to accomplish a 1 Gbps link. It's comparing apples and oranges. The 71-86 GHz band plan allows for much, much wider low and high channels than a 2 x 100 MHz AF24 link. On Fri, Jan 19, 2018 at 4:02 PM, Rory Conaway <[email protected]> wrote: > I haven’t run the numbers so please save me some time. Which one has less > fade margin at 3.5 miles? I was going to use Siklu with a 2’ antenna. > > > > *Rory Conaway **• Triad Wireless •** CEO* > > *4226 S. 37 <https://maps.google.com/?q=4226+S.+37&entry=gmail&source=g>th > Street • Phoenix • AZ 85040* > > *602-426-0542 <(602)%20426-0542>* > > *[email protected] <[email protected]>* > > *www.triadwireless.net <http://www.triadwireless.net/>* > > > > “"Engineers believe that if it ain't broke, it doesn't have enough > features yet." — Scott Adams > > >
