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

Radio wave attenuation occurs due to snow that accumulates on the antenna surface and the water film that forms when the snow melts. Therefore, even if you melt the snow with a snow melting heater, radio wave attenuation will occur if the water film remains.
When HIREC100 is applied, its super water repellency prevent snow from accumulating and no water film is formed, 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