Comparison of Super hydrophobic paint and antenna snow melting devices | Equipment Maintenance | NTT-AT NTT-AT Leading-Edge Key Technology Product Information

Radio attenuation occurs due to snow falling on the antenna surface and the water film formed when the snow melts. Therefore, even if the snow is melted with a snowmelt heater, radio wave attenuation will occur if a water film remains.
When the HIREC100 is painted, the super water repellency does not accumulate snow and does not form a water film, ensuring stable reception.

Figure 1 BS antenna signal reception status — Fig. 1 Radio wave reception status of BS antenna (January 2nd to January 4th, 1997)

Table 1 Comparison of radio wave attenuation by antenna countermeasure
measures	Untreated	snow melting heater	HIREC100	HIREC100 + snow melting heater
radio wave attenuation	Yes	Yes	almost none	almost none

Case study of Super hydrophobic sheets on antennas to protect them from snow.

*HIREC100 is the predecessor to HIREC-R. The performance of both products is equivalent.

Comparison of Super hydrophobic materials and antenna snow melting equipment