Make one wireless router into two with seamless roaming

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I don’t know what has this idea. But the effect is not good or even very poor, so the results are stated in advance, in order not to waste everyone’s time looking down, now you can click off this page.

Materials needed are two 15-meter SMA extension cable, the total price of $ 15. 15 meters is just long enough to connect the two bits of position I want to test, (RG316 wire, 2.5mm diameter, attenuation: 0.15db / m)

A 4x4mimo wireless router is needed. Materials are as follows.

Support 4x4mimo wireless router, and have SMA antenna connector, cheap on these two, Netgear R6800 and lead the potential of the EA7500V2, R7800 also can. If the router does not have SMA, but there is an IPX interface inside you can also buy an adapter SMA connected to. For example, WDR8500.

There are also DIR882, DIR878, AC85P, etc.

If IPX are not, all soldered, you have to buy this kind of wire soldered on, such as the kind of.

If the router only supports 2x2mimo, it is also possible, but you need to use the power splitter, divided into two, so that you can connect four antennas. For example, like this.

But then.

power splitters are not cheap.

Soldering antennas are also too troublesome.

IPX connection also need to remove the shell.

Therefore, it is most convenient to have a wireless router that is born with SMA and 4x4mimo. Split a 4x4mimo, into two, each 2x2mimo.

Splitting a 2x2mimio into two 1x1mimo will work too! Yes, but after connecting such a long extension cable, the attenuation is particularly large, and the rate can not go up. 2x2mimo can improve the rate and reduce some losses, I think so.

Netgear R6800 wiring as follows: (R6800 built-in an antenna)

The wiring of LINKSYS EA7500V2 is as follows: (EA7500V2 has a built-in antenna)

The two extension lines have been placed from the following figure to pull the wireless router “WIFI” location to the stairway near the “L” point location. The following figure.

R6800 EA7500V2

In order to antenna easy vertical placement, I connect the end of the extension cable in the ASUS PCE-AC88 antenna base. This base I received seven or eight, someone message that COMFAST also has four antenna base, without antenna $7 shipping, I also bought a look back, the quality is okay, magnetic suction is very strong, is the antenna spacing is relatively small. The following figure.

The most interesting thing to see is whether the speed will be the same as next to the router after connecting the antenna again via a 15 meter long extension cable.

I started testing with LINKSYS first.

When I first tested it, I found that the speed was only this much when I measured the speed next to the extension antenna at point L

IMG_20201203_172114

Engaged in a very poor signal strength, after some testing to find that the extension cable connector I made a mistake, and the antenna is connected to both ends of the inner hole, according to not connected to the antenna ah. The following figure.

So the delay of a day, immediately placed an order for an adapter, connected to the adapter to solve the problem:

Everything is ready, the test results are organized in the following table: (2.4G 20MHz 9 channels, 5G 80MHz 44 channels)

speedtest 01

Focus on the location of the L point where the extension antenna is located, even if it is very close, only about 10cm away, the signal is weaker at this point, and the speed is cut in half, proving that the attenuation of the 15m extension is very serious. Also as the message said the signal will be attenuated a lot, I thought it would only be attenuated about 20%, a big disappointment.

When the distance from the extension antenna reached 1.5 meters distance, the data became more difficult to see, it is better not to connect the extension cable.

And then look at how the performance of the Netgear R6800, this R6800 has been brushed Pandora firmware, then for 160MHz (this time I set the 5G bandwidth to 80MHz.)

The results are shown in the table below.

speedtest 02jpg

In the distance from 10CM is also cut in half, in 1.5 meters distance or attenuation is very large, really the same as not connected to the extension cord, or even worse some.

But in playing the game of glory of the king in the L point position delay is very stable, more stable than when not connected to the extension cord. It will not suddenly increase the delay time to cause the game lag.

As for the roaming situation from the “WIFI” position to the “L” point position, there is no need to roaming switch, because there is only a physical signal ah. The actual test will not be disconnected

So, from the above test results, what do I get?

This is not recommended. End of summary!

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