new canopy installation

Products PMP
1

Dear All,

We have just started with canopy, and it did not work !!!

We installed AP and SM 5.7 configured basic settings and got the link up but it would keep on cutting in few minutes.

The link is up for 1 minutes, and 1 minute is down. At times you can get 5 minutes with ok ping replies but then it would just keep on cutting.

The RSSI are around 650 - 750
The distance is around 0.38 mile.

We have tried everything, what we know of, changing the frequency but it did not help.

Can anybody help as we are completely new to this.

Regards,

2

First, your RSSI is too low… you need at least 800 to maintain a good connection. Jitter must be 4 or lower.

Next, check the most obvious:

1) what do you have between your SM and the AP? Any buildings or foliage? Any water? 5.7 is super-sensitive to this! You MUST have a clean fresnel zone to make 5.7 work.

2) Are you using a dish on the SM? Try this… you’ll be surprised at how much you can gain from adding a dish to the SM. But at .38 miles, I’d be surprised you’d really need a dish.

I assume you left everything on the Config page as default. Also, are you aligning with headphones? Try this… we’ve found this is THE best way to align an SM. Don’t just rely on the alignment tool on the Canopy page.

Hope this helps a little.

3

thanks for the reply.

the only thing in the middle is some trees.

Alignment is done all the way using headphones to manually going degree by degree.

if 5.7 does not work, then what could work ?

Thanks.

4

with trees in the middle then 5.7 and 5.2 will not work at all. you’re probably losing the signal each time the trees sway in and out of the line of sight of the antennas. for an install so close to the tower 900 is your best bet. you’ll get about 2.5 miles complete coverage through many many trees.

:?

5

Agreed. We are currently getting great RSSI and jitter through some pretty dense banks of trees at distances up to 4 miles…

6

Which set of 900MHZ are you using Botnem1? Connectorized or Non connectorized? Which antennas? What gain settings?

Thanks

matt

7
mattmann72 wrote:
Which set of 900MHZ are you using Botnem1? Connectorized or Non connectorized? Which antennas? What gain settings?

Thanks

matt


We are using the connectorized 900Mhz with the Maxrad 7db panel antennas available through Motorola (which, btw, can be purchased through Tessco for $30 less than Motorola :x )

Gain setting is 8db. Range is set for 10 miles (we are going to experiment with using a range of about 30 miles next week, just to see how far we can stretch this). So far, our farthest viable link has been 6.8 miles (through some trees, but not a lot).
8

Add a Dish to the customer install, this would improve rssi ans jitter @ .38 miles, I have several NLOS installs @ 1 mile with the dish

Gino

9

Will a dish make much of a diference on 900 MHz SMs or is it just the high frequency stuff?

10

Pacific Wireless makes a grid dish for 900 but it’s pricey at $350 and it’s 4ft diameter. Maybe not practical on most applications. There are some yagi antennas available at 9-13 db under $100

11
md wrote:
Pacific Wireless makes a grid dish for 900 but it's pricey at $350 and it's 4ft diameter. Maybe not practical on most applications. There are some yagi antennas available at 9-13 db under $100


Tessco sells a nice 12db yagi for about $90... just got one in yesterday, and will be trying it on a customer's house about 9 miles from the AP.
12

Dear all,

The link looks great after installing the reflector, rssi 1000, jitter 3-4

Hope it stays like this …

thanks all.

abdock