The 450i SM and AP appear to be very close but @ 20MHz channels not exactly but again very close to equal.
450 AP @ 5.8 with 20MHz channel: 1x = -82 dBm, 2x = -82 dBm, 4x = -75 dBm, 6x = -69 dBm, 8x = -60 dBm 450i AP @ 5.8 with 20MHz channel: 1x = -84.1 dBm, 2x = -80 dBm, 4x = -73 dBm, 6x = -66.5 dBm, 8x = -59.4 dBm 450M AP @ 5.8 with 20MHz channel: 1x = - 93.5 dBm, 2x = -88.6 dBm, 4x = -81.5 dBm, 6x = -75.9.0 dBm, 8x = -67.8 dBm So, you would see uplink improvements by moving from a 450 to 450i to 450M. Uplink improvement is great but the CPE side requiring a -54 on the downlink to be in 8x is pretty tough, hence why I’m asking about the new CPE and if it will be able to do better. All our issues are downlink related. If we could move all customers up a modulation level, that would be a pretty big deal for AP efficiency. Joe > On Jul 28, 2017, at 11:39 AM, Kurt Fankhauser <[email protected]> > wrote: > > Is RX sensitivity on the 450i AP the same as the 450i SM? Is it the same > hardware? Also what is original 450AP rx sensitivity as well? I noticed that > when I swapped out 450AP for 450iAP that I got better uplink speeds. > > Also will 450b SM accept 48v on the POE? > > On Fri, Jul 28, 2017 at 12:28 PM, Joe Falaschi <[email protected] > <mailto:[email protected]>> wrote: > We’re looking at some questions of why certain links are at certain > modulations (uplink is better than downlink). It’s explained by the spec > sheet of the current equipment and RX sensitivity. Basically the 450M AP can > do more with less signal than the CPE can. Specs below. In any case we were > then wondering what the new 450b RX sensitivity would be. There is a spec > sheet on the Cambium website but this isn’t listed. Anyone have this > information? > > 450M AP RX sensitivity > 1x = - 93.5 dBm > 2x = -88.6 dBm > 4x = -81.5 dBm > 6x = -75.9.0 dBm > 8x = -67.8 dBm > > 450SM RX sensitivity > 1x = -84 dBm > 2x = -80.5 dBm > 4x = -74 dBm > 6x = -66.9 dBm > 8x = -56 dBm > > 450i SM RX sensitivity > 1x = -85.9 dBm > 2x = -81.5 dBm > 4x = -75.8 dBm > 6x = -69.3 dBm > 8x = -61.6 dBm > > Joe Falaschi > e-vergent >
