- [Instructor] Low radio frequency signals could be caused
by several things.
The first thing is a reduced antenna power setting
of the wireless access point.
And this is something that you can change
on most SOHO routers and enterprise wireless access points.
The lower the antenna power, the smaller
the range of the wireless network.
And the reason we do this
is so that our wireless connectivity is limited
to our office or our building.
And so that our wireless signal does not bleed out
to other offices and other buildings.
We don't want anybody else to connect
to our wireless access point.
So let's show an example
of that on our SOHO router here, we can go
to our wireless 5 gigahertz network, go down to Advanced,
and then you'll see the transmit power.
Right now, it's set to high, and we had great connectivity.
We showed previously we had great connectivity
from our AV editor computer.
But we can change this.
We don't necessarily need this to be on high.
We can set it to low and save that,
and then we'll reboot the router
and then take a look at the AV editor to see how it does.
Okay, so we've rebooted the router and you can see here
it's now set to low.
And so that went through, and I just paused the video
while I rebooted.
And so let's take a look at our AV editor computer,
and we'll go to the status of our WiFi connection.
And you can see here, we have the same exact speed
and signal quality.
And I actually restarted this computer
while I was rebooting the router
and reconnected to the wireless
just to make sure.
And so signal quality, you know, you would expect it
to still be full bars,
'cause it's only about eight or 10 feet
from the wireless access point.
Even at a low transmission setting,
you're still gonna go pretty far
with an 802.11 AC connection.
And so here's our speed as well.
So we're in good shape with that.
And, you know, you can test it, you can bring your laptop
or your mobile device and kind of walk around the perimeter
of the building and test different settings.
Now with this SOHO router, you can only do low
or medium, middle or high, but on other routers
you can actually change the setting
with more configuration ability.
You could change the DBM for that.
So it can get more in depth with more
of an enterprise wireless access point.
But in most cases, if you're in a small office
or home office, low trans low transmit power is fine,
and you should be able to get connectivity
all the way through your office and all
the way through your house or whatever it might be.
So watch for reduced antenna power
on the wireless access point.
If you have a real big office,
you might not be able to connect very well
and you might have a low radio frequency signal.
You also wanna check if the antennas were connected.
They need to be screwed on at the client.
And I'll tell you, I've seen this dozens of times
where people have installed their own wireless access card
and just never put the antennas on.
And it didn't work very well.
That's what happens.
Same thing with the wireless access point,
you need to be connected and screwed on properly.
You might also have reduced antenna power at the client,
some wireless access cards
and adapters have the ability to reduce their antenna power.
You would do this with the third party software,
with the software that came with the manufacturer.
You wouldn't usually do this
in say Windows or another operating system.
So watch for reduced antenna power
at the client side as well.
Then watch for whether you're accessing from the perimeter
of the wireless network.
The lower the radio signal at the WAP,
at the WAP, the smaller the network will become.
The perimeter actually gets closer
to the wireless access point.
So you wanna watch what your distance is and compare
that to what the transmit power
is of the wireless access point.
And then finally interference.
You know again, you can have low radio frequency signal
that RF signal can easily be interfered
with by other devices, electronics, and so on.
So you wanna watch
for what is around your wireless access card?
What is around your computer?
What do you have running?
What other devices are you running?
Most of the time,
people bring their own mobile devices with them.
So, you know, it could be them.
It could be those devices that are interfering
with your computer or your laptop and vice versa.
So always watch for the interference.
And another thing, check the antenna placement.
You may need to just adjust the antennas a little bit,
and you may find that you'll get a better connection.
So there's a little bit
about low RF signal, radio frequency signal,
and that's about it for this sub lesson.