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 ?

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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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What is CPE in Networking?

CPE means Customer Premises Equipment and refers to communication equipment (like a router, bridge, modem or access point), which is normally physically located at the customer’s home or business premises. As LinITX are a WISP (Wireless Internet Service Provider), we often deploy wireless access points like the UniFi UAP AC PRO or a network bridge like the airMAX NanoBeam AC at customers premises in order to provide them with a means to access high-speed broadband wirelessly, when their own ISP is unable to provide adequate coverage via their antiquated cable networks.
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What is a WISP?

WISP is a Wireless Internet Service Provider; they normally use wireless networking technology to offer customers with poor or non-existent broadband coverage, access to superior broadband speeds. These customers tend to live in areas where their broadband coverage is less than adequate, often located in more rural areas of the country where there is no fibre optic cable infrastructure already in place.
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News: Latest Ubiquiti vulnerability info

As many of you are probably aware, a lot of Ubiquiti devices running old firmware are under a new wave of attack taking advantage of an old vulnerability that was fixed a year ago.

In response to this latest wave of problems for some WISPs, Ubiquiti have thoughtfully emailed everyone on their mailing lists with their latest advice, namely:

“In recent days, we’ve seen virus activity taking network devices offline. In most cases, devices are reset to factory defaults. In other cases, devices are still operational, but inaccessible. The virus is using an HTTP/HTTPS exploit that doesn’t require authentication. Simply having a radio with out-of-date firmware and having its HTTP (port 80)/HTTPS (port 443) interface exposed to the Internet is enough to get infected.”
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Ubiquiti NEXT Announcements

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The Ubiquiti NEXT Conference has concluded in Wynn, Las Vegas with a host of new products and upgrades for existing UBNT products. Ubqiuti’s conference has 4 main Themes, Spectrum Utilisation, Network Management, Tower Defensibility and WISP Market expansion. Each will be outlined below.

Spectrum Utilisation

In this section UBNT announced 2 new additions to the airMAX AC range.
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News: Netonix range of intelligent PoE switches now in stock

We’ve recently received a delivery of Netonix switches. We thought we would blog about how amazing these things are, except one of our customers, Wessex Internet beat us to it!

If like those guys, you’re running your own WISP and need to power Ubiquiti or MikroTik radios, we have always advocated using batteries instead of a UPS as the site will stay up for longer when there is a mains failure. These switches make life much easier as they include within their range of products, PoE switches that can deliver 24v and 48V to radios from as little as a 9V DC supply!  We suggest your setup should consist of at least two leisure batteries wired in series, providing 24V or four batteries providing 48V.
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Ubiquiti UBWA Training with LinITX

ubwaWe will be holding another Ubiquiti UBWA (Ubiquiti Broadband Wireless Admin) training course very soon and we still have a few places left, so why not come along to our Air Conditioned Head Office Training Suite in Needham Market (between Ipswich and Stowmarket in Suffolk) on Tuesday 7th July 2015 and over the two days learn a mix of Wireless and RF theory with practical labs to re-enforce the learning plus detailed Ubiquiti supplied documentation designed to help you with deploying Ubiquiti AirMax and AirFibre point to point links:
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Mikrotik QRT Perfect for PTP Wisp applications

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The Mikrotik QRT is an all in one wireless device similar to the SXT range but much more powerful. The QRT boasts a powerful 24dBi antenna combined with an internal RB911 with a transmit power of 30dBm giving a potential output of 54dbm or 250W which far exceed’s the UK power restriction for wireless networks set by Ofcom. 4W or 36dBm is the current maximum allowed power out in the UK on Band C which the QRT can manage effortlessly.
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HowTo: Building to Building PTP links using MikroTik Wireless Products

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We are often asked how to make building to building or ‘point to point’ wireless links. As the MikroTik interface does not change between models this ‘How To’ can apply to any MikroTik Wireless based device. For this How To I will be using a pair of the new MikroTik SXT AC’s, to create a L2 transparent wireless bridge in a simple point to point mode (PtP).  This How To can also apply to point to multi point scenarios (PtMP). One SXT will be set up in ‘Bridge’ mode (effectively an AP) and the other as ‘Station Bridge’ (i.e. the ‘client’), to ensure best performance the link will be created and secured using the Mikrotik NV2 TDMA based protocol.
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