![background image](http://html.mh-extra.com/html/checkbox/hsone/hsone_setup-and-user-manual_2594983019.webp)
shoots over the heads of the users, like a layer of fog traveling a few feet off of the ground.
A second type of antenna re-shapes the signal even more, sending it in a pinpoint beam. These
antennas can increase range ten-fold or more, however if the user is not in the direct path of the
signal they will not be able to see it. Even if they are in the direct path if they are not able to send
a signal back the full distance they will not be able to establish a connection. These high-gain
point-to-point antennas are best used in pairs, one on each end of the path, and while not
practical for use on laptops they are good for connecting buildings in remote locations or
repeaters in areas not contiguous to other units.
There are other ways to improve the range of the signal for users. One way is to improve the
sensitivity of the radio receiver at both ends. While we do not have control over the quality of the
user’s laptops we have made the receiver in the CheckBox very sensitive.
Another way to improve range is to increase transmit power. Again, since we do not have control
over the quality of the user’s laptops we cannot affect their transmit power, but we could boost
ours. CheckBox uses the maximum legal power for unlicensed operation in the frequencies
(channels) it occupies. There are some hotspot companies that do use higher power, but that is
a dangerous game.
Unlicensed operation at higher power can result in the property owner
being fined.
When you boost the transmit power on one end of the connection but not the other you also run
into the problem of one side being able to see the signal from the other side but not being able
to send a signal back.
Using antennas that did not come with your CheckBox system or connecting your
CheckBox system to an amplifier or booster will void your warranty and could cause
illegal operation.