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Macsha Antennas: Use and maintenance

Macsha Antennas

The antennas are designed to be used in any type of sports event and to resist high densities of competitors. Its function is to recharge the chips when they cross their field and receive their unique identification code.

The Macsha antennas can be connected up to 8 per system (depending on the One4All version) and can also cover up to 8 meters with a single system. They are placed on the finish line as well as on all other timing and control points of the track.

We are sharing some recommendations regarding use and maintenance:


Use of a single antenna

If you are going to use a single antenna, connect it to port 1. If you are going to use additional antennas, connect them to ports 2 through 8. (or 4)

Folding antennas

They are unidirectional antennas that are used to obtain an appropriate measurement of time. Its application is ideal for marathons, triathlons, duathlons, and intermediate checkpoints. Folding floor antennas are ideal in all types of competition where the chip is used on the dorsal since they maximize their reading ratio.

These antennas are installed on the ground simply by lying on it.

Side antennas

They are multi-directional antennas that are used to reinforce the measurement area. They work together with the floor antennas and are applicable to any sport. Its use is also ideal for those cases where the installation of antennas on the floor is not a possible option, such as open water, cycling or motorsports. These antennas are ideal for combination with floor antennas when the chip is used in footwear.

They can be installed on tripods next to the passage area, or in arches above the passage area.

Be Careful! ⚠️

When assembling the tripods, be sure to hold them very well. It is common that in locations with strong winds they fall. A fall can damage some of the radiating cells of the antenna and reduce its performance, or even become completely useless.

Thanks to the use of this type of antennas in combination with the floor antennas, we can time with a single line without installing backup measurement lines.

Aerial antennas

They are unidirectional antennas designed for exclusive mounting on the crossbars of the pass arches. Its particular use is for the timing of motorsports, although it can also be used to time other sports, such as cycling events.


Antennas and chips are sensitive to interference like all components of a radiofrequency system. Three of the elements that produce the greatest interference in chips and antennas are:


The antenna must not be covered by any metallic element since the radio frequency waves do not cross the metal. With respect to the chips, they should not be adhered to any metal surface, since this would result in a loss of reading, too.


The human body is composed of 70% water. It is very common in the finish line of a race to see collaborators of the organization stand in front of the side antennas or static on the floor antennas. This is essential to avoid as it causes a deficiency in detections. Ask anyone who is in the finish line area to be placed behind the antenna lines.

Density of participants

As we explained earlier, water is one of the factors that is producing the most interference on antennas and chips. That is why, especially at the start of the races where there is a greater density of competitors, there are losses of readings.

On very dense starts, it is recommended to place more than one line of antennas separated by at least 4 meters to increase the reading ratio.


Water-resistant antennas, but …

The antennas are water-resistant and can be used under rainy conditions, however:

  • Never allow the antennas to be submerged by water. This can damage both the antenna and the reader.
  • Store them in a dry and protected place. Do not expose the antennas to a humid environment for long periods of time as this could cause oxidation in their elements and reduce their useful life.

Folding antennas

Never allow very heavy vehicles to circulate over the antennas. This can cause damage to its external plastic structure or internal cells by breaking them.


The cables and connectors are responsible for transmitting the power generated by the reader to the antennas. Always take care of their condition.


  • Do not bend the cables tightly or force their connectors.
  • Keep them always clean and away from humid environments.
  • Do not break the antenna cable at the time of winding, always keep gentle curves.
  • Protects the connectors at the time of storage.
  • Be sure not to press or bite any wire with the same antenna.
  • Always protect the cables by placing them in the free space under the floor antennas.

“Hidden” Chips

It is important to note that if the chip is completely covered at the time it passes through the antenna, it is very likely that it will not detect it. For example, a runner who covers it when looking at his watch or when crossing the finish line with a child in his arms. You also have to be alert to chips in wheelchairs, mud or neoprene that can cover it too.


If you have any problem with your antennas, remember that you have our Tutorial for diagnosis and repair of floor antennas and side antennas in School of Timing. Not only will explain to you how to perform a series of simple and fast measurements, in order to check the proper functioning of the antennas. Further; in the case of detecting a malfunction, several steps are included, to solve and repair possible failures.

On the other hand, you also have the option of an RFID Field Detector, with which you can measure the signal emitted by your antennas, accurately and real. With it, you can not only measure the signal emitted at a control point in order to maximize the detection area but also detect cell failures in order to diagnose and repair your antennas.

Find it today in our shop online.

Do you have problems with the antenna and cable connectors? We also have a tutorial for you 🤗: How to repair the antenna and cable connectors.

Timer, if you’ve started reading and your face is this: 🤔, don’t panic!

Do not forget that you can also contact our technical support at whenever you need it.