I saw someone asked this similar question but didn’t get a reply. Is it ok to use deflector in US to get extra distance with 5200?
Why use 5200 instead of 5700?
Because of FCC regulations no. But in other conuntries its ok.
5200 PTMP cannot use reflectors.
5200 PTP can use reflectors and/or dishes.
Jerry Richardson wrote: 5200 PTMP cannot use reflectors.
5200 PTP can use reflectors and/or dishes.
This is not entirely correct. One can use a reflector dish with 5200SM's as long as you decrease the output power by the amount of gain your dish adds.
With 5200 BH's the same rules apply. You can't just take a 5200BH and use a reflector dish with it. You must decrease the output power if you want to remain legal. This is why the Canopy spec sheets show the 5.7 10/20 MB BH's as having a LOS range of 35 miles and the 5.2 BH's having a 5 mile LOS range.
Per Motorola, the only reason to use a reflector dish in the 5.2 band is to minimize interference.
5.2 GHz Extended Range Backhaul Module w/ Reflector 10 Mbps
Antenna Gain = 7db
Reflector Gain = 18 db
EIRP = 30 db (1.3W)
LOS Distance: 10 miles
Rx Sensitivity: -86 dbm
5.2 GHz Extended Range Backhaul Module w/ Reflector 20 Mbps
Antenna Gain = 7db
Reflector Gain = 18 db
EIRP = 30 db (1.3W)
LOS Distance: 5 miles
Rx Sensitivity: -79 dbm
These are from PDF Spec Sheets from 2004. The most recent version of a BH that I have used in 5.2 GHz was a 10 Mbps with reflectors on both ends. It came with software version 7.x.x.?? which had an option to adjust the power output of the radio. I called Moto since I was not familiar with this setting. They asked me what it was set to. I told them. They said from the factory, the transmitter is set at the highest output power allowed by FCC law under the assumption that reflectors were being used.
I think the link ended up being around 3 miles in distance and the Rx level at the BHS was -46 db!!
Right, when you order the 5.2 Ghz backhaul kit with reflectors they have the radio’s power levels already turned down. If the power wasn’t turned down you’d end up with an EIRP of 48 dB like a 5.7 BH with reflector.