In view of the launch of 5G towards the end of the year, and after the new frequencies of the channels have been settled nationwide, the modification of the antennas should begin to suppress mobile telephony as much as possible.

This antenna can only be made available in areas where the channel changes have been made. !!!

The reception of these antennas is for channels 21 - 48. They have a very good rejection from channel 50 (700 MHz) and above. Essentially, in this area, the main horizontal lobe is suppressed, on average by -25 dB, while two smaller lobes remain, 30 degrees to the left and 30 to the right with a gain of -15 dB.

The critical separation of 700 MHz between television and telephony requires meticulous construction with high precision. To achieve this, the following are required:

1) The elements must have precise positions and dimensions.

2) There must be a trap to limit telephony with an element of suitable length between the dipole and the reflector.

3) The dipole must have waterproof protection to prevent detuning with rainwater and snow.

4) The antenna matching transformer must be calculated for channels 21 - 48.

All of the above definitely increase the price of the antenna, which is why both types of antennas will be produced.

Amplifiers should not be unnecessarily overloaded with mobile telephony channels, as the technician will not be able to increase the power in the amplifier to cover the entire installation, because the amplifier will intermodulate prematurely. The fewer the channels, the higher the amplifier's output level.