Siklu is a good idea and a good price.  Cablefree is another one, more 
expensive but can go to 10Gbps.  RFcom is another vendor.

Rory

From: Af [mailto:[email protected]] On Behalf Of Mathew Howard
Sent: Tuesday, July 18, 2017 9:31 AM
To: af
Subject: [AFMUG] 70/80ghz links

So we have a link that's around ~1.7 miles running on an airFiber24, which we 
needs to be upgraded to something faster (looking for more than 1 gig), ideally 
with less rain fade...
We happen to have another tower, which is almost exactly half way between, so I 
could split the distance in half. My idea, is to do two 80ghz links... it looks 
like I can do two Siklu 5500 links, which will give me 2Gbps for less money 
than doing one 18ghz link with my bandwidth requirements, and it has the 
ability to upgrade to 5Gbps with just a license key... and it also has the 
advantage of getting us lots of bandwidth at the third tower.
Is this a good idea, or am I missing something that makes this completely nuts? 
Does anyone have real world experience with rain fade in 80ghz (rain zone K, 
southern Wisconsin, so pretty much the same weather as the Chicago area)? 
According to the Siklu link budget calculator, it looks like we should get 
better availability with the two 80ghz links than what we're getting now with 
24ghz (at twice the distance).

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