I'd be curious if your experience was the same with say a cambium gigabit injector in there. Not quite Apples to apples but closer than a gigabit vs non gigabit injector.
Midspan gigabit injectors definitely add some signal loss due to the Ethernet magnetics in the path. At least a couple dB. I've also noticed that certain surge suppressors are even more picky with the gigabit injectors. Not sure why. On Oct 7, 2014 2:30 PM, "Paul McCall via Af" <[email protected]> wrote: > Just wanted to give a heads up on our experience with our first run at > trying ePMPs at this distance of cable run. > > > > We mounted 4 5 Ghz and 4 2.4 Ghz ePMP APs today (a retrofit from 100 > series APs). We have an existing CMM Micro that has been at the tower for > 5 or 6 years. We needed more ports with Sync so we attempted to use a > Gigabit Syncinjector for the additional ports we needed. We put the 2.4 > Ghz radios on the CMM and put the 5 Ghz on the SyncInjector. > > > > The CMM and the “LAN facing” ports on the Syncinjector, powered by the > same 5 AMP/24v power supply that we use for CTM’s, plugged into a 2011 > Mikrotik router. > > > > The CMM works flawlessly, providing 100Mbit connections and sync . The > SyncInjector… not so much. Initially, the symptoms were that 1 of the APs > would only connect 10 Mbit and 1 different one would not get Sync. We > tried swapping know good (successful on the CMM) cables, changing ports on > the SyncInjector to make sure we didn’t have cable or AP related issues > etc. Eventually, we lost ability to do Sync on any of the APs, and 2 of > the 4 will only do 10 Mbit. Tried it with both 100Mbit and Gbit ports on > the 2011, in auto or static Speed/Duplex configs. No go. The cables > being used were both Best-Tronics and Toughcable Carrier. All the > toughcables were premade to the 300 feet and tested inhouse at Gigabit > speeds (TIK to TIK tests) > > > > Going to have to climb again tomorrow with a second CMM to swapout for the > SyncInjector. > > > > We normally have very good luck with SyncInjectors but at 300 feet > distance with the Gigabit models, we couldn’t make it work in this > application. Cambium had “advised us” that there may be abnormal > challenges with 300 ft. of cable on the ePMP. > > > > Paul > > > > Paul McCall, Pres. > > PDMNet / Florida Broadband > > 658 Old Dixie Highway > > Vero Beach, FL 32962 > > 772-564-6800 office > > 772-473-0352 cell > > www.pdmnet.com > > [email protected] > > >
