5G N78 antenna&speed GL-XE3000

[sasha95]

4X4 mimo N78 antenna)
80cm dish increases signal by 20dBm in n78 range
How I determined it? I removed the feed from the dish and pointed it at the tower without the dish)))

The distance to the tower is 1.3 km in a straight line

Dish irradiator two ports

Antenna gun which is on top.

The dish gives -60, -58 dBm, the gun antenna -72, -75 dBm in the N78 range (3500-3600 MHz), the distance to the tower is 1.3 km in direct visibility
Cable 5dfb 4 by 3 meters
Maximum speed 550-650 Mbits download,upload 150-170 Mbits max
The plate amplifies by 20 dBm and provides stability of the connection
The connection does not fail, the router does not glitch

This is what my 100 MHz wide signal looks like from the antenna
А что и как у вас?)

[sasha95]

Tower in line of sight 700 m

Tower in line of sight 1,3 km

[sasha95]

Smartphone next to a satellite dish

satellite dish
The cell tower is the same
22 dBm difference

[Shannon]

@sasha95

80cm dish increases signal by 20dB

100x more signal is nutz.
I wish we had 150 Mbps up; unfortunately we are mobile

That's more upload bandwidth than Comcast gives their cable customers.

[sasha95]

-76dbm= 35microvolt -smartfone
-54dbm= 446microvolt-dish
446 / 35= 12.7
The signal from the dish is 13 times stronger than the signal from the phone

[sasha95]

A router with its antennas next to a satellite dish

Router signal indicators without a satellite antenna with native antennas what are there

Satellite Dish Signal Levels
The cell tower is naturally the same

The router antennas should be like this because of X polarization

Signal levels inside the room

[sasha95]

Now the gun antenna which is on top of the dish is connected. I made it myself)) MIMO1, MIMO2.MAIN, DIV antennas from the router are connected.
Why router antennas show lower results?
Since all router antennas are non-directional, and the gun antenna and dish antenna have a narrow directional beam, the dish has an 8 degree beam...
Smartphone antennas are also directional, they work in the opposite direction from the phone screen. All directional antennas have greater gain than omnidirectional ones.

[sasha95]

It's better not to buy a satellite head like mine.Inside is an element from a stationary cellular base antenna.It works well 1800,2100,2600...
At 3500 it works much worse...I modified it inside, installed 1element, it became better, but not ideal, the VSWR is higher than normal, you can see it in the photo
The gun antenna is also junk))) The signal is good but there is no separation between the two channels.The separation between the two channels is only 10 dB.
Need to make two antennas

[sasha95]

Frequency time schedule of operators (at 100 MHz). From the tower in direct visibility 1.3 km to the antenna gun

the same operators from the tower are closer, 700 meters, direct visibility.

I think we need to take something like this.
In theory, my dish 0.8 meter should give 26 dB, but in practice it gives 20 dB due to SWR and the heads are out of focus and not at the right frequency.Beam width 7.4 degrees.And a 0.4 plate like this one should have 20 dB in gain theory.
Beam width 15°, such a wide directional microwave flashlight, like a radar and not so big and heavy, and the gain in theory is 6 dB less...At frequency n78
In theory, this antenna should be more than enough.All panel antennas are for one range and have lower gain. The most powerful is of course parabolic, like in radar) It is the broadest of all and has a good angle of 15 degrees at -3 dB. Not much, not little and light 0.4 meters (40 by 30 centimeters)In theory, a reflector of this size should produce 20 dB.But how the focus is set up in practice is unknown.And its shape is such from X polarization.Optimal size and angle.Everything else will probably work worse.And it will work well on a camper. Anything more powerful is even bigger and heavier.A meter-long dish will give only 8 dB more.The main thing is with an angle of only 6°.In theory, it's like a bright wide headlight with a very good 15° beam angle.If the router is located indoors, with its antennas, even with windows facing the tower, this antenna should give +30 dB, most of what is possible, and filter out other towers, of course, so that there is no mess of signals...

[sasha95]

My problem is that two signals come to my windows from different towers, I couldn't filter them with simple antennas. But with a dish it's very good, nothing ever glitches and 5G doesn't turn off. There's a terrible mess of signals on the air, otherwise there will be no quality or speed...The tower suppresses my signal for transmission up to 40 mW, this indicates the quality of the channel with a large reserve.The phone in my apartment is constantly jumping from tower to tower because the signals are almost identical.It is impossible to use the phone as a hotspot, 5G is disabledThe router does not jump but chooses the most powerful one.Two signals in an apartment of the same power is also terrible.For a long time I couldn't understand why my damn phone constantly jumps and turns off 5G.and I just found the plate on the street and thought where I could use it to at least understand something)The router switches from tower to tower depending on the location of the router in the room...

[sasha95]

The theory says that parabolic antennas are the most powerful and broadband.
Theory:
Satellite dish,Frequency 3500 MHz
1.2 meter =30 dB Angle 5°
0.8 meter=26 db Angle 7.4°
0.6 meter=24 db Angle 10°
0.5 meter=22 db Angle 12°
0.4 meter=20 db Angle 15°
0.3 meter=18 db Angle 20°
The compromise between size and gain is probably 0.4-0.5 meters. While maintaining almost maximum parameters. 2/3 of the maximum possible.
I definitely don't need more than 20 dB amplification now. A lot of operators from another country receive it at 10 km.Almost certainly the resonator will need to be refined to the maximum signal at the frequency I need, or maybe it won't be necessary...The reflector may not be round but square from X polarization.This is also a theory.The working parts of the antenna will be located at the corners of the quadrangle.This is, in theory, the minimum size with the highest possible quality.And it's easy to adjust, 15° won't miss.I would like to try this antenna in practice.

My shitty antenna head)
At 3.5 GHz, the SWR is greater than 2, which is a loss of 12-15%.Without modifications to my head, the SWR was about three.
Satellite Head Out of Focus Adds More Losses.Because of this, my large dish works like a small one, 0.4-0.5 meter. I can’t adjust it with this irradiator.With bad SWR it gives only 20 dB.Losses in a 5dfb cable will be approximately 0.45 dB per 1 meter at a frequency of 3500 MHz. There are cables from Aliexpress that act up at different frequencies)))
When I move to Camper I will put an antenna with a motor on the roof of the camper and will receive good quality internet.The difference in signal, if you put a router in a camper with native antennas and this antenna, I think will be about 30 dB minimum... This is the quality of the signal, and quality is of course the speed and reliability of the channel...

[sasha95]

My dish receives a tower at 3.400 MHz at least 10 km away from me with a level of -110 dB.I didn't set it up for a signal, if I set it up the signal will be stronger, I think. 10 km is already something

4G LTE EARFCN calculator | 5G-Tools.com

Frequency calculator to understand frequency
3400 MHz – 3600 MHz
(41590 - 43589)

[sasha95]

AT+QRSRP
Rsrp command, what is the signal level? From -140 to -44 dBm.
Mimo 1 and Mimo 2 antennas are disconnected, instead of them there are 50 ohm plugs.
+QRSRP: -66,-59,-140,-140,LTE
+QRSRP: -99,-53,-102,-51,NR5G
There is no signal at all on LTE -140.On 5g, mimo1, mimo2 inputs receive without an antenna at a level of -99, -102. And main-div inputs receive from a dish -51, -53 dBm
+QRSRP: -63,-60,-140,-140,LTE
+QRSRP: -78,-53,-67,-52,NR5G
Now all four antennas are connected, the gun is complete crap.One of its ports drops the signal to -78 dBm((( Second port -67.The dish completely outperforms the gun antenna, the dish is -52, -53 dBm.
+QRSRP: -63,-60,-140,-140,LTE
+QRSRP: -74,-54,-67,-51,NR5G
Both my antennas are complete crap))
The 0.8 dish works like a 0.4 m dish.+ 20 dB(-54,-51)
The antenna gun has low performance(-67,-74)
LTE receive signals antennas main/div -60,-63
I need to look for an antenna with a well-tuned parabolic focus
need a large separation between channels, at least 30 dB, the gun antenna has only 10(((
I set up the dish on one tower and the gun on another to get two 3500 mhz cells, but the aggregation only works from one tower. I can't get 2 signals on the same frequency from different towers.

[sasha95]

The router is inside the room and the dish is outside
+QRSRP: -93,-91,-140,-140,LTE
+QRSRP: -51,-84,-56,-90,NR5G
MAIN,DIV - antennas router, MIMO1,MIMO2 - antenna dish...
-51,-56 - dish, -84,-90 - antennas router.This is the difference at 3500 MHz
-91,-93 - lte2600
A visual example of what a satellite dish is for...
The difference is even more than 30 dB
+QRSRP: -87,-91,-62,-60,LTE
+QRSRP: -50,-83,-58,-92,NR5G
LTE 2600:-87,-91 - antennas router,-60,-62 antenna dish.
NR5G N78 3500: -83,-92- antennas router,-50,-58 antenna dish.
On the other side of the house there is simply no 5G signal
It's only 700 m to the tower, but there is no signal beyond the house.
10 m of 5dfb cable will weaken the signal by 4.5 dB, and +27 dB from the dish will remain and the speed will be good. I was upset yesterday, went to the tower and measured the speed on my smartphone, 50 meters from the tower, it was 800 megabits. And the router gives 500-600 megabits 700 meters from the tower, the smartphone 300-400 megabits at home

[sasha95]

Antenna Alternation Sequence
AT+QRSRP
+QRSRP: -63,-60,-140,-140,LTE
+QRSRP: -74,-54,-67,-51,NR5G
+QRSRP: MAIN,DIV,MIMO1,MIMO2,LTE
+QRSRP: MIMO2,MAIN,MIMO1,DV,NR5G
MAIN,MIMO2-Transmitting
But others also transmit if one antenna is connected.

[sasha95]

The uncut version is of course better
Theoretically this should give 20 dB
The center of each antenna lobe contains the maximum signal
There is no point in considering any other antennas or boxes, especially small ones, most of them will work worse than the router's native antennas.
This one is adjustable up and down plus or minus 15°, theoretically. Because it's small.I have an ewelink smart home connected to my router, 2 cameras, switches, everything always works.

[sasha95]

How to optimally connect an antenna
Mimo 1 and mimo 2 to the n78 dish, it will send the Internet (and receive and transmit N78), and the native antennas-router will support LTE. Mine only works together with LTE, it receives the LTE dish, and transmits the LTE antenna "main".
If you connect a satellite dish to the main/div contact, it will also receive all data, but will only transmit it back to LTE, since the channel is busy communicating with the LTE cell. That is, there will be no transmission to N78 from the dish.LTE works much worse for me, sometimes the return channel is 100 megabits, and sometimes 14

[sasha95]

In a car, of course, the router antennas need to be moved to the roof.
Nothing will work better on the roof of a car than the native antenna from a router; they are omnidirectional.It's better to bring out all four.The module constantly sorts out which antennas it should take the signal from.Only omnidirectional antennas are suitable for movement.The antenna gain is taken from the beam formation in a certain direction.

[sasha95]

The router in the back of the room receives two base stations.
Rsrp values ​​of each antenna.
1 +QRSRP: -98,-95,-96,-102,LTE
+QRSRP: -92,-88,-86,-88,NR5G

2 +QRSRP: -91,-77,-32768,-32768,LTE
+QRSRP: -92,-89,-87,-88,NR5G
Router in the same place inside the room
And there is speed
I have two identical signals living in my house.
And both are 5G
This router should be bought by those who have a view of the tower, it will work 100%. That is, if you can see the tower with your eyes, it will work well. Of course, you need to put a radar on the roof of your house, it will be better for sure.
First of all, this router should be bought by those who live outside the city and put the radar on the roof! In the city, it also works well in direct line of sight of the tower.And if I lived on the other side of the house, I wouldn't get 5G.I would then put the plate on the roof and everything would be fine.

[alexu]

Hey Sasha, I really appreciate your technical analysis and scan screenshots. Though I don't understand half the stuff you write - the take away (this antenna is good, this is not, etc) is super valuable. Please keep posting your findings!

Alex (aka "Sasha 75" )