2021 new 3600-mile digital high-definition 4k antenna and signal amplifier

Description

READ THESE FIRST
If you are not 100% satisfied with our product, please contact us. You can get a full refund or a replacement.
Your TV must be a digital TV to use this digital antenna. If it is an analog TV, you will need a digital converter box for your TV.
You MUST rescan your TV channels any time a new antenna is attached. Your previously saved channels are synced to your previous antenna. You must resync the new antenna with the TV by rescanning the channels. Simply connect the new antenna without rescanning the TV channels won't work! It is also highly recommended you rescan the TV channels after repositioning your antenna.
NOT 3600 MILES
An antenna, as a receiver, is only good when TV signals can reach it. We put 3600 miles in the title simply because other sellers make false claim and many buyers don't know that, and think our antenna is not a good one. In fact, our antenna will give high quality 4K/1080p with crystal clear HD pictures.
At the bottom of the page, we will show you how to calculate maximum reception distance.
DON'T BUY PRODUCTS FROM DISHONEST SELLERS
: buying from dishonest sellers only encourages them to continue to lie.
FEATURES
No more monthly TV bills
: Don't let Comcast trick you to pay .99/month for watching TV. This antenna brings you more free digital channels than your Comcast cable gives!
Long range antenna
: with large receiving surface and built in 30dB amplified signal booster, this HDTV antenna will be able to receive all available channels in your area.
Superior picture quality
: With our next generation built-in smart IC chip and latest digital filtering technology, this antenna greatly improves signal to noise ratio, giving you a 4K 1080P crystal clear picture!
13 ft strong heavy duty coaxial cable
: The long durable cable makes it easy to choose the best receiving spot in your house. The amplifier can be powered by the TV's USB port.
Description:
Working Frequency : VHF (170-240Mhz) / UHF( 470-860Mhz)
VSWR : ≤1.5
Impedance : 75 Ω
Signal Booster : 30dB
Size : 9.9" x 9"
Color : Black
Cable : 13 ft
Connectors : Universal
Polarization ： Linear
Voltage : 5V
Power Supply Connector : USB
Compatible with 720p, 1080i, 1080p/ ATSC
Adjustment of antenna directions
Connect the antenna to TV properly.
Set TV to
Antenna mode
.
Rescan your TV channels with your TV remote control
Adjust the antenna for best pictures.
Package Included:
1 x Digital HDTV Antenna
1 x Signal Amplifier Booster for Antenna
Shipping Note:
Shipped by USPS first class package
Physics of Signal Travel
We know the Earth is a round globe. Let 'O' be the center of the earth, 'R' be the radius of the earth, and 'h' be the height of the TV tower, as shown in the figure below (figure not to scale).
Let 'P' be a point on the surface, such that TP is the tangent to the earth's surface. Obviously, no signal can be received beyond point 'P'. SP (d) is then the maximum distance that the TV signal can be received. We need to calculate SP.
It now becomes very simple geometry problem that we have learnt in the middle school.
OPT is right angled triangle. We know from geometry knowledge:
OT
2
= OP
2
+ PT
2
Since h is very small compared to maximum receiving distance d, therefore TP ≈ SP = d
∴ (R + h)
2
≈ R
2
+ d
2
∴ R
2
+ 2Rh + h
2
≈ R
2
+ d
2
∴ d
2
≈ 2Rh + h
2
Again, since h is very small compared to earth radius R, therefore, h
2
can be neglected
∴ d
2
≈ 2Rh
∴ d ≈ √
2Rh
We know earth radius R = 6400 km = 6.4 x 10
6
m
Using the above equation, we can calculate the maximum distance that the signal can be received at different tower heights:
TV Tower Height
Maximum Distance in Kilometers
Maximum Distance in Miles
100 m
35.77 km
22.23 miles
150 m
43.82 km
27.23 miles
200 m
50.6 km
31.44 miles
300 m
61.97 km
38.51 miles
500 m
80 km
49.71 miles
2000 m
160 km
99.42 miles
8000 m
320 km
198.84 miles
From above calculation table, to be able to receive 200 miles TV programs, the TV tower height has to be 8,000 meters (8 km) high into the sky! Highest peak on Earth is 8,848 meters (8.8 km) at Mount Everest at Himalayas!
The above calculation has not even considered signal attenuation, which is a more advanced topic. To illustrate, consider you are sitting in front of a fireplace, the closer you are to the fireplace, the more heat you feel. The farther you are, the less heat you feel.
Please note: If you live in a metal home, you should not use indoor TV antenna, as TV signal can't penetrate into metal. Signals will be bounced back.
It is now obvious that the maximum reception distance is determined by the TV signal source at the TV tower. It has nothing to do with TV antenna. An antenna is just a receiving device. TV Antenna does not transmit any signal! If there is no TV signal around your area, an antenna becomes useless.