That sounds more likely. We have swapped out a lot of 5 GHz FSK for 450 on
the same dishes (27RD or KPP) and it works fine. I would have to ask the
guy who did them whether the alignment ever needs touching up. I don't
think so, but I think we always check it. If the FSK was 2.4, I would
definitely check the alignment if only because aligning 2.4 FSK was
imprecise due to wide beam and tendency to max out the alignment tone.
-----Original Message-----
From: SmarterBroadband
Sent: Tuesday, October 06, 2015 6:47 PM
To: af@afmug.com
Subject: Re: [AFMUG] Cambium PMP 450 5GHZ Cluster
I may be thinking of something different. I recall one product needing a
different arm to work efficiently.
Maybe it was epmp.
I will shut up now.
-----Original Message-----
From: Af [mailto:af-boun...@afmug.com] On Behalf Of Ken Hohhof
Sent: Tuesday, October 06, 2015 4:34 PM
To: af@afmug.com
Subject: Re: [AFMUG] Cambium PMP 450 5GHZ Cluster
Why?
-----Original Message-----
From: SmarterBroadband
Sent: Tuesday, October 06, 2015 6:20 PM
To: af@afmug.com
Subject: Re: [AFMUG] Cambium PMP 450 5GHZ Cluster
I think you may need a different arm on the reflector for 450?
-----Original Message-----
From: Af [mailto:af-boun...@afmug.com] On Behalf Of Matt
Sent: Tuesday, October 06, 2015 12:35 PM
To: af@afmug.com
Subject: Re: [AFMUG] Cambium PMP 450 5GHZ Cluster
I would expect -67 to -70 under the following assumptions:
- operating in 5.7 GHz
- 19 dBm xmt power on AP
- measuring rcv signal at SM (higher at AP because SM can exceed +36
EIRP
xmt)
- straight down the middle of the sector
- downtilt properly adjusted on sector
- no multipath or rain fading
At the edge of a sector (+/- 45 degrees azimuth) expect to lose 5-6 dB.
Your assumptions are pretty well right on my system setup. Except I am
about 30 degrees from center of sector on this SM. This is my link status.
AP -76.0 (-79.6 V / -78.5 H) SM -80.5 (-83.0 V / -84.0 H) with 22mbps
downlink test.
Expected more. The cambium 90 sector antennas are new but AP's are pretty
old pulls from a deployment that never panned out. Think they are back from
when PMP450 line first started shipping.
This site has a PMP100 2.4 cluster running out of capacity. Was hopping to
overlay with 5.8 450 and just drop the SM's in existing reflectors of higher
tier users that had LOS.
I just deployed 4 90 degree Cambium 450 sectors on a 300 foot tower.
I have a very clear LOS CPE at 6 miles with a reflector dish. What
kind of signal should I have at this range?
