Kurt, Any pros and cons on 450 between 2ghz, 3.65 and 5? Any differences at all? Range vs throughput? Obviously 2ghz penetrates better, 3 is licensed and 5 has more spectrum but anything else? All bands are open for me
Thanks On Fri, Oct 17, 2014 at 11:20 PM, Kurt Fankhauser via Af <[email protected]> wrote: > I started the spring deploying 450 in 2.4ghz, 5ghz, and 3.65ghz and then > middle of the summer deciding i had to"try" some ePMP because the cost was > so low I couldn't resist.... I can say now that I am fairly certain I will > probably stick with the 450. There are many small reasons that when I > considered them all i came to this conclusion. Here are my reasons: > > 1. ePMP latency starts to go up quickly once you have more than 10 clients > on an AP. Once you get over 20 clients the latency is pretty much 25-30 ms. > Cambium was honest about this at the road tour and they noted if you want > the best latency to stick with the 450. > 2. Sync between the two platforms is not there yet. If you have adjacent > towers on the different platforms that can see each other you won't have > sync. > 3. No remote spectrum analyzer for clients. This is HUGE for when the > clients fire up their wireless camera and baby monitors and trash the whole > spectrum. > 4.No burst bucket on CPE's > 5.EPMP Interface is SLOWWW. Cambium explained at the tour they were > offloading alot of processing power to the PC you are viewing the interface > with and i can't be taking a quad core machine up a tower to work on these > radios and do site surveys. I am working with a Panasonic Toughbook and > takes FOREVER to log into the EPMP radios. > 6. Fore some reason site surveys are a PITA with ePMP. Think its a > combination of many factors here... slow interface one of them... > 7. EPMP in 5ghz DFS band has really low power output. Something like > 13-14db. When using an omni antenna you can't get maximum legal EIRP out of > the ePMP. > 8. 450 link tests and SM modulation is pretty stable and predictable. EPMP > seems like its all over the place. I don't think I have yet seen EPMP > linktest get full up or down outside of a lab environment. > > There might be other reasons but I'm pretty tired and was heading for bed. > > > Kurt Fankhauser > > Wavelinc Communications > > P.O. Box 126 > > Bucyrus, OH 44820 > > http://www.wavelinc.com > > tel. 419-562-6405 > > fax. 419-617-0110 > > On Fri, Oct 17, 2014 at 5:05 PM, TJ Trout via Af <[email protected]> wrote: > >> I haven't been keeping real up to date on current generation ptmp >> offerings but we have a new site going up and I need to decide pretty >> quickly on some equipment. For the guys who have been using both 450 and >> epmp do you have any pros and cons ? Any reason to spend the extra money >> when epmp seems to have the same if not better performance , sync, etc? >> >> My gut says 450 is going to be my best long term solution but with all of >> the positive epmp feedback it's hard to justify the extra money? >> > >
