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New Member
Posts: 3
Registered: Friday

Powerbeam M5 300

Hello guys,

 

I have 2 powebeams m5 300 in ptp connection.

 

The link is -73db and the speed is 100+Mbps.

 

Everything seems to work fine, the ping is between 2 - 7ms, but from time to time i get some numbers around 250 - 700ms.

 

Both powerbeams use the latest firmware.

 

Any suggestions?

 

Thank you if advance.

George

SuperUser
Posts: 10,260
Registered: ‎12-08-2008
Kudos: 7195
Solutions: 442
Contributions: 1

Re: Powerbeam M5 300

-73 is way lower than I would ever accept - you are likely seeing bursts of interference causing the latency spikes because there isn't enough signal to noise.   You don't say what the distance is, but I would not use 300s for anything longer than a few miles, and probably not then -  you really want signals in the low 60s or better.

Jim

" How can anyone trust Scientists? If new evidence comes along, they change their minds! " Politician's joke (sort of...)

"Humans are allergic to change..They love to say, ‘We’ve always done it this way.’ I try to fight that. "Admiral Grace Hopper, USN, Computer Scientist
New Member
Posts: 3
Registered: Friday

Re: Powerbeam M5 300

Hello eejimm,

 

Thanx for taking the time to reply.

 

The distance is about 2kms.

 

Should change them to 400s?

 

Between the 2 points there are some trees, do you think that they interfere?

 

Thank you

SuperUser
Posts: 10,260
Registered: ‎12-08-2008
Kudos: 7195
Solutions: 442
Contributions: 1

Re: Powerbeam M5 300

Absolutely - at 2km you should have much higher signal levels than that if it's clear line-of-sight.   If there are trees in the way this will absorb signal - them moving in the wind may even be part of the latency issue.   If re-adjusting the antenna aim doesn't make things better, going to bigger dishes will probably help.   Frankly at that low a level, if the 300s are aimed as best they can be, I would go right to 500s to get more signal through the trees...

Jim

" How can anyone trust Scientists? If new evidence comes along, they change their minds! " Politician's joke (sort of...)

"Humans are allergic to change..They love to say, ‘We’ve always done it this way.’ I try to fight that. "Admiral Grace Hopper, USN, Computer Scientist
New Member
Posts: 3
Registered: Friday

Re: Powerbeam M5 300

I just moved one of the dishes in another location (10meters away from the original location) and now i am getting around -68 and the noise is -101.

The latency now is 1ms but i am getting some 20ms from time to time.

 

Thank you

George

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