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New Member
Posts: 33
Registered: ‎07-09-2017
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Re: PTMP Setup for farm CCTV

Haha yep up late and early mornings thats dairy farming for you. Tring to set this up inbetween to rest of work that need to be done.

 

Yes we've had a few frosts over here, but we need some rain. Our summer/winter is one extreme to the other down here!

 

I say it would be easy enough, if I knew what was wrong! Praying for it being the cable.

There is an upside at least, I know a lot more about the radios and the settings now!

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Re: PTMP Setup for farm CCTV

Huzzah!

 

It was the cheap cable I had on that link causing the problem, swaped out with 50m of shieded outdoor cat5e that my isp installer gave to me for nothing when he came out to take down an old antenna! score!

 

I have 2 screenshots one on 20db power and one with my eirp limit turned on.

 

@Dave-D How does this look?

 

new cable.jpgnew cable eirp on.jpg

SuperUser
Posts: 38,605
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Re: PTMP Setup for farm CCTV

They both look good--a reasonably stable 60Mbps link.

And that's plenty for a camera or two.

 

You're welcome--I'm glad I was able to point to the issue.   Dave


> HQ in Seacoast region New Hampshire U.S.A.
> Ubiquiti Certified Trainer [UCT] for:
     UBWA [AirMax] / UEWA [UniFi] / UBRSS [routers]
UBNT.NH@gmail.com
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Re: PTMP Setup for farm CCTV

So if I get a Rocket 5ac prism and a 60 degree sector would I get similar results for the PTMP?

 

What would you recommend for the stations?

 

Is a bigger dish better for my eirp limit? Some of the stations would need more bandwidth

 

Regards,

Brendan

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Re: PTMP Setup for farm CCTV

No you would not; you should not do this.

 

What stations?

 

Yes: an antenna with more gain will require you to

turn down rf output even more. But because there are

two antennas in the path, the receive radio antenna

will increase the received signal level.    Dave


> HQ in Seacoast region New Hampshire U.S.A.
> Ubiquiti Certified Trainer [UCT] for:
     UBWA [AirMax] / UEWA [UniFi] / UBRSS [routers]
UBNT.NH@gmail.com
New Member
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Re: PTMP Setup for farm CCTV

[ Edited ]

Ok so to bring you back up to speed this is what I am planning to do in the picture below.

The distances for the links and gear I thought might do it are all on the picture.

 

I have 2 powerbeam 300s set up on the station 2 link curently for testing.

 

So I should go for the bigger antennas with this lower EIRP limit if I am getting that right.

 

I planned for the new Gen2 stations which I believe are equivilant to the powerbeam 400.

 

Which gear would you choose for this with this EIRP limit?

 

Revised Plan2.jpg

SuperUser
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Re: PTMP Setup for farm CCTV

If you're EIRP-limited, only the receive antenna gain

will help; if you're not, both the transmit and receive

antenna will boost the received signal.

 

In general, I don't know what drives you to go for exotic

solutions, such as 'Gen-2', 'Prism' and 'AC' for this setup.

Your needs are low--6 cameras at 4Mbps each is only

24Mbps--easily within a non-AC radio's capacity. And

there is unlikely to be any interference at all here.

 

And for this very narrow spread of sites--under 30deg--

why use a 90deg or 120deg sector antenna? You can

find 45deg sector antennas, or you can use a couple

of high-gain master radios--perhaps PBE-400. That

will provide something like 2 to 5dBi higher antenna gain.

 

For radio choice, in general a received signal level of

about -65dBm is adequate; in this low-noise environment,

slightly less might be OK. Extrapolating your experience on

the first link and extremely low EIRP limits, you may want

to use PBE-400 radios throughout--simply for the larger

antenna. Perhaps you can get away with PBE-300.

 

I never advise people to break regulations; I can only observe

this site is in the middle of nowhere.  Dave

 


> HQ in Seacoast region New Hampshire U.S.A.
> Ubiquiti Certified Trainer [UCT] for:
     UBWA [AirMax] / UEWA [UniFi] / UBRSS [routers]
UBNT.NH@gmail.com
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Re: PTMP Setup for farm CCTV

Thanks Dave,

 

I don't need to use the exotic things as you say. The only reason I have that is looking at the local Australian warehouse site for these products the price differance is not great, and the gen 2 just for ease, they dont even stock 'ordinary' nanobeams anymore. I chose the AC under recomendation, and now I see probably not required, but again the differance in price not great. Also the AP radio needs a higher throughput.

 

The spread is over 45degrees slightly.. thats why I thought I needed a 60degree. Am I wrong?

 

I will take your advise on the larger antennas.

 

I understand what you mean using 2 pbe400s, Id rather a sector if posible just to make it easier.

 

I also like to respect the regulations, I argee with your observation also. Im sure the radios will work.

 

 

 

 

SuperUser
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Re: PTMP Setup for farm CCTV

It's not a 45deg. spread--it's two very narrow spreads.

 

A sector antenna will have less gain--possibly a lot less.

If you insist on a sector,  use the most narrow one you

can, for highest gain.  Have fun!   Dave

 

 


> HQ in Seacoast region New Hampshire U.S.A.
> Ubiquiti Certified Trainer [UCT] for:
     UBWA [AirMax] / UEWA [UniFi] / UBRSS [routers]
UBNT.NH@gmail.com
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Re: PTMP Setup for farm CCTV

Ah yes I see what you mean.

 

Just don't want to run into trouble with signal and allignment.

 

Would you use powerbeams and split the differance on the 2 narrow paths?

SuperUser
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Re: PTMP Setup for farm CCTV

Very likely--after double-checking angles.   Dave


> HQ in Seacoast region New Hampshire U.S.A.
> Ubiquiti Certified Trainer [UCT] for:
     UBWA [AirMax] / UEWA [UniFi] / UBRSS [routers]
UBNT.NH@gmail.com
New Member
Posts: 33
Registered: ‎07-09-2017
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Re: PTMP Setup for farm CCTV

I will buy a couple extra PBE400s then and give it a shot.

 

Thanks heaps Dave u have been very informative and I've learned a lot!

 

I might put up some pics once I get it all up and running

 

Regards,

 

Brendan.

SuperUser
Posts: 38,605
Registered: ‎06-23-2009
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Re: PTMP Setup for farm CCTV

Great--we'll look forward to that.   Dave


> HQ in Seacoast region New Hampshire U.S.A.
> Ubiquiti Certified Trainer [UCT] for:
     UBWA [AirMax] / UEWA [UniFi] / UBRSS [routers]
UBNT.NH@gmail.com
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