Interference Problem?

Just installed a customer location, and I am getting strange issues. The client has a solid connection to the AP, but as soon as I push any amount of data through the link, the link will drop and it goes to scanning. It finds and reregisters to the tower almost immediately, but obviously this is affecting throughput.

Here are the stats from each side. I notice that the AP reports the power level lower than the SM. Thoughts on that?

Software Version : CANOPY 7.2.9 Jul 23 2005 01:49:03
Software Boot Version : CANOPYBOOT 3.0
FPGA Version : 070605 (DES Sched) P9
Session Timeout: 0, AirDelay 211 (approximately 5.87 miles (31017 feet))
Session Count: 101, Reg Count 99, Re-Reg Count 30
RSSI (Avg/Last): 1351/1359 Jitter (Avg/Last): 4/2 Power Level (Avg/Last): -79/-78
DnRate(S): 768 DnLimit(S): 1000 UpRate(S): 200 UpLimit(S): 300 (kbit)
LoUpCIR(S): 0 LoDnCIR(S): 0 (kbps)
Rate : VC 18 Rate 2X/1X

Session Status REGISTERED
Registered AP 0a-00-3e-90-69-36
RSSI 1556 (-70 dBm)
Jitter 3
Air Delay 211 (approximately 5.87 miles (31017 feet))

Other info:
I know another WISP has just installed Canopy as well. My AP is running at 924, his AP is running at 906. The SM Spectrum analyze shows it clean as a whistle at 924.

Thoughts? Comments? Questions?

Well, not that anyone cares… :slight_smile:

But it was an interference problem…just not from the source I was thinking. I stopped out to install another customer from the same tower and again was seeing the same problem. I noticed that 912-924 was pretty clean, but that 928+ was pegged intermittently. I watched it for a while, and eventually saw that pretty much 925-930 were getting bursts of signal about every 5seconds to 2 minutes. :evil:

Not sure exactly what it is, but it is very high powered as I pick it up 15-20 miles away from the city in the -45 range. Ack.

Anyway, dropped that tower to 920 and all is happy now. Just bummed that I will not be able to use 3 seperate channels in that area.

That SCREAMS "paging system."

You can’t do much about it other than call them up and ask. You’ll have to triangulate a bit to find out where the paging tower is.