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- [Instructor] Low radio
frequency signals could be caused

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by several things.

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The first thing is a reduced
antenna power setting

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of the wireless access point.

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And this is something that you can change

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on most SOHO routers and
enterprise wireless access points.

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The lower the antenna power, the smaller

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the range of the wireless network.

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And the reason we do this

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is so that our wireless
connectivity is limited

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to our office or our building.

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And so that our wireless
signal does not bleed out

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to other offices and other buildings.

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We don't want anybody else to connect

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to our wireless access point.

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So let's show an example

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of that on our SOHO router here, we can go

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to our wireless 5 gigahertz
network, go down to Advanced,

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and then you'll see the transmit power.

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Right now, it's set to high,
and we had great connectivity.

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We showed previously we
had great connectivity

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from our AV editor computer.

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But we can change this.

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We don't necessarily
need this to be on high.

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We can set it to low and save that,

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and then we'll reboot the router

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and then take a look at the
AV editor to see how it does.

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Okay, so we've rebooted the
router and you can see here

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it's now set to low.

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And so that went through,
and I just paused the video

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while I rebooted.

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And so let's take a look
at our AV editor computer,

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and we'll go to the status
of our WiFi connection.

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And you can see here, we
have the same exact speed

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and signal quality.

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And I actually restarted this computer

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while I was rebooting the router

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and reconnected to the wireless

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just to make sure.

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And so signal quality, you
know, you would expect it

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to still be full bars,

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'cause it's only about eight or 10 feet

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from the wireless access point.

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Even at a low transmission setting,

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you're still gonna go pretty far

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with an 802.11 AC connection.

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And so here's our speed as well.

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So we're in good shape with that.

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And, you know, you can test
it, you can bring your laptop

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or your mobile device and kind
of walk around the perimeter

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of the building and
test different settings.

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Now with this SOHO router,
you can only do low

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or medium, middle or
high, but on other routers

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you can actually change the setting

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with more configuration ability.

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You could change the DBM for that.

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So it can get more in depth with more

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of an enterprise wireless access point.

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But in most cases, if
you're in a small office

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or home office, low trans
low transmit power is fine,

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and you should be able to get connectivity

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all the way through your office and all

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the way through your house
or whatever it might be.

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So watch for reduced antenna power

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on the wireless access point.

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If you have a real big office,

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you might not be able to connect very well

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and you might have a low
radio frequency signal.

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You also wanna check if the
antennas were connected.

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They need to be screwed on at the client.

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And I'll tell you, I've
seen this dozens of times

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where people have installed
their own wireless access card

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and just never put the antennas on.

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And it didn't work very well.

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That's what happens.

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Same thing with the wireless access point,

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you need to be connected
and screwed on properly.

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You might also have reduced
antenna power at the client,

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some wireless access cards

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and adapters have the ability
to reduce their antenna power.

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You would do this with
the third party software,

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with the software that
came with the manufacturer.

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You wouldn't usually do this

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in say Windows or
another operating system.

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So watch for reduced antenna power

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at the client side as well.

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Then watch for whether you're
accessing from the perimeter

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of the wireless network.

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The lower the radio signal at the WAP,

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at the WAP, the smaller
the network will become.

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The perimeter actually gets closer

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to the wireless access point.

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So you wanna watch what
your distance is and compare

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that to what the transmit power

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is of the wireless access point.

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And then finally interference.

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You know again, you can have
low radio frequency signal

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that RF signal can easily be interfered

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with by other devices,
electronics, and so on.

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So you wanna watch

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for what is around your
wireless access card?

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What is around your computer?

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What do you have running?

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What other devices are you running?

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Most of the time,

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people bring their own
mobile devices with them.

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So, you know, it could be them.

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It could be those devices
that are interfering

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with your computer or your
laptop and vice versa.

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So always watch for the interference.

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And another thing, check
the antenna placement.

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You may need to just adjust
the antennas a little bit,

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and you may find that you'll
get a better connection.

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So there's a little bit

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about low RF signal,
radio frequency signal,

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and that's about it for this sub lesson.