Slow Links (Antani Pictures included)

I have read alot and try things to get links up to a high speed. I am amazed at some of the speeds some people report on these forms.

This is a 5.8ghz link with a 22dbi grid on one end to a 10dbi onmi on the other.

http://www.smyth.net/images/roof1.jpg (office)
http://www.smyth.net/images/roof2.jpg (tower)

tx/rx strenth shows -69/-70 over this link and is only reliable at 6Meg. The fequency is 5805 and both sides of the anti were bought specificly for that frequency.

I’m using Atheros AR5211 on both sides of the link

In the first picture the grid antani is what I am using. (the omni is 2.4ghz hotspot). On the second picture on the top of the tower there is the small omni on the rightside of the tower. The large omni on the tower is also 2.4ghz hotspot.

The link pings 13ms and some times bouncds to 30-60.

Any suggestions on what to try next? Could the chimni seen in the first picture cause a problem?

-Michael

nstream, 5ghz-turbo, what platform do you use? How much traffic do you pass ? Version of MT? Complete conf? and etc.

There will be a fix in nstreme for the 5211 – nstreme was ignoring frame size limiting (and that is needed for the 5211 as it can not support as big frame sizes as the 5213… and new chips).

You might set the framer-policy to exact-size so that it will not send above regular ethernet frame sizes.

John

is it the same with 5212?

version is 2.9.11
nstream is off
using 5g non turbo freq 5805 with antanis for 5805
very little traffic at this time.

I just turned netstream on and moved to 5g-turbo. The pings seem to be a little more consistant. But any thing I use more than 6M like 9M or 12M it just bounces up and down, time outs, and the screen will go like 6M/9M 12/6M 9m then 6m then 6m/12m. You get the point. it just bonces constantly.

tx/rx shows -77/-75
tx/rx ccq shows 2/3
over all ccq 0
tx power is set to default
framer = exact size
farmer limit = 3200
preamble = both
antani gain = 0
fds=none

If your CCQ values REALLY are 2/3 or the like, you have VERY bad signal conditions, which would clearly explain your problems.
As the CCQ shows the percentual usage of the (theoretical) bandwidth, 2-3 show that there must be TONS of retransmissions.

I’d say the first things coming to mind are bad cabling/pigtails/… or real interference…

Best regards,
Christian Meis

I just upgraded to the .12 code and now i show tx/rx ccq 39/41. Overall ccq 0.

Just as i wrote the above it droped to 13/30.

:frowning:

But your problems still are the same?

Best regards,
Christian Meis