26 dBi ultra wide-band parabolic grid antenna

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Need4Speed
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Re: 26 dBi ultra wide-band parabolic grid antenna

Post by Need4Speed » Tue Oct 15, 2019 2:07 pm

AntennaRaul wrote:
Sat Oct 12, 2019 3:50 pm
Hello all, I just found this long thread about the wide band parabolic grid. I work at the design and fabrication shop and lab where it originated and can answer any questions. How can I help?
Hello Raul,
I've installed 2 of these at my own home and 2 at my parents place, both identical setups except for the length of the lmr400. When I ordered them from signalboosters.com I asked for information about them and they had a rep from Wilson antenna call me back. He really didn't tell me much I didn't already know. So far I absolutely love the performance from the antennas so hats off for amazing results! I'm connected to a tower 7 miles from the tower with full signal(-75 to -80). I've driven to the tower and got -76 with my phone. My parents are connected to the same tower as I am but are 10 miles from the tower. They get -85 to-90. Furthest I've been able to reach was a tower 19.2 miles away with -90 signal which is unbelievable!

Only real question I have is about the spacing between the two grids. I currently have them 28" from the edge of one grid to edge of the other. Mount brackets are about 5' apart. So far I have not had any issues so have just had the mindset "if it ain't broke, don't fix it"
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AntennaRaul
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Re: 26 dBi ultra wide-band parabolic grid antenna

Post by AntennaRaul » Sat Nov 30, 2019 4:26 pm

Hi Need4Speed, Looks like a nice install. You can normally use a parabolic antenna almost edge to edge. However this one I suggest 12" edge to edge. The reflector grid is actually undersized at the lower bands 600 to around 900 Mhz. The wavelengths there are large and the feed horns might start "seeing" each other. However less so if in a cross-pol set up like you have. The cross pol set up will have wavelengths off by 90 degrees and enjoy a good bit of attenuation between them.
Excuse my lateness to reply as I had not seen any activity on this thread lately

These antennas get so much distance that latency at the high mileage comes into play and may slow data down, depending on the carrier signal equipment, modem quality and brand. I dont know those details as Im only working with antennas.
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Need4Speed (Mon Dec 02, 2019 4:44 am)

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

Post by AntennaRaul » Sat Nov 30, 2019 4:33 pm

2nd reply.... If you need to squeeze the last drop of dBi gain on this or any tower mounted antenna, try putting the radio right below them in a waterproof box. Run the ethernet cable or power wire to the modem and save all that cable loss (and expense)

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

Post by OptimusPrime » Wed Jan 29, 2020 10:42 pm

coldknob wrote:
Mon Jul 08, 2019 10:00 am
Sorry to be so late to this party but I believe I have found the ultimate "need for speed" solution.
Time won't allow me to go into all of the details of my journey, but needless to say I have amassed quite a collection of antennas, amplifiers, cables etc.

My home is in the mountains, closest towers 6 mi. away. Predominately band 12, 5mhz. but 2 towers with band 2, 15mhz which provide much better speeds. Trouble is I couldn't pick up the band 2 signal at all.

Fast forward several months and I settled on a parabolic grid wifi antenna which gave me consistent speeds of 25 down on band 2 and effectively blocked the band 12 signal. A few months of tinkering with the cables, antenna placement, etc. got my top speed up to 45 down, 15 up which is more than I need.

However, I always wondered what I could get if I had a mimo setup but 2 grid antennas at 45 degree angles is a larger footprint than I wanted and I was satisfied...until I came across the existence of a mimo feed horn that replaces the one on your present antenna. Found a Chinese supplier on eBay and 1 month and $55 later got it and bolted it on.
MVIMG_20190708_101435541.jpg
The results were pretty amazing. 70 down 25 up consistently, 85+ down frequently. This is from a tower more than 7 miles away. $40 for 2.4mhz parabolic grid antenna, $55 for 1710-2710mhz feed horn = 24X2 gain for less than $100.
Is this already -45/+45 when the grid is straight?

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

Post by Didneywhorl » Thu Jan 30, 2020 11:39 am

It might be, some of the international manufacturers will offset by 65 degrees or 45 degrees or? Youd have to ask the manufacturer directly.

The ones from ltefix.com are set +45/-45 inside the enclosure. Mount straight up and square.
LTE noob, for sure. Learning though.

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

Post by OptimusPrime » Thu Jan 30, 2020 8:24 pm

Didneywhorl wrote:
Thu Jan 30, 2020 11:39 am
It might be, some of the international manufacturers will offset by 65 degrees or 45 degrees or? Youd have to ask the manufacturer directly.

The ones from ltefix.com are set +45/-45 inside the enclosure. Mount straight up and square.
Do you have the link to the ltefix.com ones? I do not seem to find it and wish I knew they had.

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

Post by Didneywhorl » Thu Jan 30, 2020 10:59 pm

https://ltefix.com/shop/antennas/wifi-a ... o-antenna/

I use one of these, and another one that has just type N connectors mounted to the case for each antenna
LTE noob, for sure. Learning though.

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

Post by OptimusPrime » Sat Feb 01, 2020 3:21 pm

Didneywhorl wrote:
Thu Jan 30, 2020 10:59 pm
https://ltefix.com/shop/antennas/wifi-a ... o-antenna/

I use one of these, and another one that has just type N connectors mounted to the case for each antenna
Completely different thing. The thread is about parabolic grid antenna and the question was about the MIMO field horn. I had quoted @coldknob post to that effect. I wanted to know if the MIMO fieldhorn is already -45/+45 and therefore the antenna grid do not need to be rotated to those angles.

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

Post by Didneywhorl » Sat Feb 01, 2020 4:32 pm

My fault, overlooked detail, lost the context.
LTE noob, for sure. Learning though.

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

Post by OptimusPrime » Sat Feb 01, 2020 9:20 pm

No worries...I cannot find any spec info on those field horns so hoping someone with one can verify this.

Thank you.

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