26 dBi ultra wide-band parabolic grid antenna

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xdavidx
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Joined: Tue May 28, 2019 4:04 pm

Re: 26 dBi ultra wide-band parabolic grid antenna

Post by xdavidx » Mon Jul 08, 2019 8:24 pm

FYI, I contacted the seller to see if they have any feed horns that go down to 700 MHz too. I'll report back if they reply.

They sell different models, but the one that @coldknob bought is the widest frequency spread. That's the only problem I see with it is that you can't get any 700 MHz bands, or 600 MHz for that matter, if someone was using T-Mobile, or 800 MHz for Sprint. But 700 is common to AT&T, T-Mobile and Verizon.

xdavidx
Posts: 267
Joined: Tue May 28, 2019 4:04 pm

Re: 26 dBi ultra wide-band parabolic grid antenna

Post by xdavidx » Mon Jul 08, 2019 8:28 pm

@coldknob: Are you saying you are getting a peak of 85+ Mbps from a single carrier Band 2, 15 MHz wide?

coldknob
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Re: 26 dBi ultra wide-band parabolic grid antenna

Post by coldknob » Mon Jul 08, 2019 8:40 pm

Links to feed horns:
https://www.alibaba.com/product-detail/ ... 18598.html

https://www.ebay.com/itm/LTE-Fixed-Para ... wL8xcf4iEz

The grid is any generic 2.4ghz wifi antenna. I believe this is the one I have.
https://www.altelix.com/2-4-GHz-24-dBi- ... g24g24.htm

This link is where I first ran across this setup. Check out the feedback!
http://www.uplift.ph/Skywave/Products/S ... Ultra-MIMO

coldknob
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Re: 26 dBi ultra wide-band parabolic grid antenna

Post by coldknob » Mon Jul 08, 2019 8:54 pm

xdavidx wrote:
Mon Jul 08, 2019 8:28 pm
@coldknob: Are you saying you are getting a peak of 85+ Mbps from a single carrier Band 2, 15 MHz wide?
With an ethernet connection I get 85+ with the mimo setup, 45 max with a single antenna connection. I'm on ATT, very rural, lightly used tower. Although the tower is 7 miles away I have clear line-of-sight, not so much as a leaf between my antenna and the tower.

xdavidx
Posts: 267
Joined: Tue May 28, 2019 4:04 pm

Re: 26 dBi ultra wide-band parabolic grid antenna

Post by xdavidx » Mon Jul 08, 2019 9:06 pm

Those are some crazy setups! :lol:

How would you like to climb this one? http://i.imgur.com/5IYr8t7.jpg

The one in the top of the tree was fun too: https://i.imgur.com/FHxPVMb.jpg

xdavidx
Posts: 267
Joined: Tue May 28, 2019 4:04 pm

Re: 26 dBi ultra wide-band parabolic grid antenna

Post by xdavidx » Mon Jul 08, 2019 9:11 pm

coldknob wrote:
Mon Jul 08, 2019 8:54 pm
With an ethernet connection I get 85+ with the mimo setup, 45 max with a single antenna connection. I'm on ATT, very rural, lightly used tower. Although the tower is 7 miles away I have clear line-of-sight, not so much as a leaf between my antenna and the tower.
That is darn good for 15MHz. You have to be pretty happy with that.

So it only has Band 2? No other bands available?

Which modem are you using?

coldknob
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Re: 26 dBi ultra wide-band parabolic grid antenna

Post by coldknob » Mon Jul 08, 2019 10:18 pm

xdavidx wrote:
Mon Jul 08, 2019 9:11 pm
That is darn good for 15MHz. You have to be pretty happy with that.

So it only has Band 2? No other bands available?

Which modem are you using?
Previously I had satellite internet and with no other options you could say I'm pretty happy. Streamed a 4k movie the other day and it didn't buffer once.

Band 12/17 is available but only at 5mhz. Signal strength is generally better than band 2 but the highest speed I could
attain was 15 down with 2 antennas.

My experimentation and setup was done with a we826/MC7455 but I recently hooked up a zte mf279 (ATT home base) and was surprised to get even better speeds. I think the mf279 has a cat12 modem which may explain the increase.

xdavidx
Posts: 267
Joined: Tue May 28, 2019 4:04 pm

Re: 26 dBi ultra wide-band parabolic grid antenna

Post by xdavidx » Mon Jul 08, 2019 10:32 pm

Very nice.

So you don't see band 12 at all on this feed horn, or you are manually blocking it in the modem?

Maybe the mf279 is picking up some other bands. Are you able to see which bands it gets?

coldknob
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Re: 26 dBi ultra wide-band parabolic grid antenna

Post by coldknob » Tue Jul 09, 2019 10:01 am

xdavidx wrote:
Mon Jul 08, 2019 10:32 pm
Very nice.

So you don't see band 12 at all on this feed horn, or you are manually blocking it in the modem?

Maybe the mf279 is picking up some other bands. Are you able to see which bands it gets?
Well I can't verify exactly what the mf279 is doing because it only shows signal strength and 4g or 4gLTE. However it performs similar to the we826 so I assume it's using the same band.

The we826 would aggregate bands 2 and 12 when set on all bands but I never saw any improvement in speed versus being locked on band 2. Band 12 is only 5mhz in my area.
The problem with the all bands setting was that sometimes the modem would select band 12 as the primary band (even with a 1900mhz yagi) which would kill my speeds. Locking on band 2 solved that problem.
I haven't had that problem yet with the mf279, even though I can't lock bands. I'm hoping that my current signal strength on band 2 (-92dbm) will eliminate that occurrence.

I have no idea what algorithm AT&T uses to select what band you're on but I suspect it's based solely on signal strength which makes sense when you're driving around in order to seamlessly switch between towers.
For data use from a fixed location bandwidth is the key. -115db @ 15mhz=good speeds, -90db@5mhz=crappy speeds.

I should note that I'm in a very rural, mountainous location. Many hills and valleys and many dead zones. Also I'm located on the edge of the National Radio Quiet Zone where cell phone signals are prohibited.
Every area is different but this is what works for me in my specific location.

Also keep in mind these antennas are extremely directional (we're talking millimeters making a difference). I can't actually see the tower I'm connected to but I know it's exact location and elevation in relation to my house by using google earth and other resources. It's akin to aiming a satellite dish, you get a good signal or you get nothing.

xdavidx
Posts: 267
Joined: Tue May 28, 2019 4:04 pm

Re: 26 dBi ultra wide-band parabolic grid antenna

Post by xdavidx » Tue Jul 09, 2019 10:05 am

I heard back from the ebay seller. He doesn't have any horns that go down to 700MHz.

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