Can a collinear antenna be used for ADS-B?
In this post I want to describe how to build a collinear antenna, which can be used for receiving ADS-B signals on 1090MHz from aircraft. I use a NooElec R820T tuner dongle on my laptop as my radio receiver (I’ll write up more about this later), and as I love quite close to an airport, it’s ideal for capturing signals from airlines.
Can A discone be used as an ADS-B antenna?
Earlier in the week a video comparing a Discone to a Coax Collinear antenna for ADS-B reception was posted. The author of that video has now posted on his blog a tutorial on how he made the coax collinear antenna. Check out the video tutorial below.
What do you need for a coaxial collinear antenna?
The necessary tools are the caliper, sharp knife, scissors, glue for PVC and the ohmmeter. The basic element of the coaxial collinear antenna is coaxial cable (Figure 1) with the length calculated from the wave length of the ADS-B signal.
Is it easy to make a COCO antenna?
Lots of people talk about building CoCo (Collinear antennas made from co-axial cable) – yes they are cheap to make, but it is also very easy to make a bad coco that doesn’t work well. Essentially ADS-B is line of sight, the maximum range is to the horizon, and one of the simple antennas above will get you most of the way there.
What is the coaxial collinear antenna made out of?
It consists from the two parts, each is coaxial collinear antenna. The first collinear antenna is built from the 75 Ohm coaxial line and is balanced with the 75 Ohm resistor, the second collinear antenna is built from 50 Ohm coaxial line balanced with the 50 Ohm resistor.
How are collinear antennas mounted in an array?
A collinear (or co-linear) antenna array is an array of dipole antennas mounted in such a manner that every element of each antenna is in an extension, with respect to its long axis, of its counterparts in the other antennas in the array. It’s usually mounted vertically, in order to increase overall gain and directivity in the horizontal direction.
How did Karl Shoemaker build the collinear antenna?
Using a sharp cutting tool or tubing cutter, cut 5/8″ of tined braiding off each section end. Cut 1/2″ of insulation from center conductor, leaving 1/8″ between center conductor and braiding. After soldering all sections and balun stub together, check the return loss.