Is There Rain Fade on 60GHz Wireless Signals?

Many new wireless wire and wireless wire dish customers who are unfamiliar with 60GHz have been asking about rain fade and if it’s a major problem on 60GHz.  So let’s look at the facts.

At 60GHz the biggest problem is actually attenuation from Oxygen.  The O2 molecules in the air absorb the RF energy very efficiently at this frequency.  Therefore link distances tend to be much shorter than hoped for if purely considering Free Space Path Loss.  The losses at 60GHz equate to around an extra 15dB per Km over and above any FSPL.  So what about rain, fog, sleet, snow, mist etc?
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Can I use 60GHz for PtP or PtMP links in the UK ?

Wireless Wire Dish

The arrival earlier this year of the MikroTik Wireless Wire and shortly after the MikroTik Wireless Wire Dish caused a large amount of excitement in the WISP industry and sales have proven them to be very popular products.  The use of 60GHz instead of 5GHz for point to point and point to multi-point links opens many new possibilities and challenges.

60GHz offers substantially less interference and much higher throughput speeds. Less interference because the band is almost completely unoccupied, uses very narrow radio antenna beams therefore offers much higher co-located frequency re-use. Also much higher throughput is possible up to as high as 1Gbps Full Duplex.
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