Details of ePMP performance in a tricky LOS
To far from the AP (~21 KM) and too many trees in the path, and the only thing that gives us any signal at all is 2.4 Ghz, and we all know that 2.4Ghz has too much interference to work out in the wild, right? Well – 2.4 Ghz ePMP saves the day. 🙂
Here’s a photo of what cnMaestro tells us about the link. 20.98 KM from the AP, and the sector is pointing straight south, so I’m what…. 30 degrees out of the center maybe. And most importantly, it usually maintains good modulations and it works – over 20 Mbit throuh it in a 10 Mhz wide channel at 21 KM. Their old (non-Cambium) gear struggled to give them an intermittent connection, and 1 or 2 Mbit on a good day. Here’s a photo of what cnMaestro shows.
Here’s a photo of their TV tower with the ePMP Connectorized with a 22dBi DualPol Grid on it…
Here’s the trees I see from the top of the tower – it is relatively clear once we get out of their bluff, but I’ve drawn a red circle about where I’m aiming to our tower 21 Km away.
And this is what we get throught the link, about 21 Mbit agregate. Their uplink struggles a bit – but only until Cambium releases their beam forming sector in 2.4Ghz… right boys? 🙂
So – for anyone who considers 2.4Ghz dead, and anyone who is forgoing clients who are burried behind some trees, or anyone who’s give up on 2.4ghz because it doesn’t work well with ‘other brands gear’ – I encourage you to try Cambium’s ePMP in 2.4 Ghz. This client had an only semi-functional connection with their previous gear, and at about the same signal levels. They already have a 30′ tower plus mast so going taller isn’t really practical – but simply swapping one brand of radio to another brand of radio, that was simple and worked miracles. 🙂