I'm definitely able to be wrong, and I don't need to smoke anything to
be wrong. I've done 60ghz exactly zero times. I've smoked things I
probably shouldn't more than zero times, but zero times in the past 15
years.
I'm just taking free space loss and adding tx power and antenna gain
from the spec sheets, then comparing to RSSI required for a given MCS.
Seems like 1/2 mile for top performance and maybe you get MCS 1 at 5
miles.
What am I missing?
------ Original Message ------
From: "Eric Kuhnke" <[email protected]>
To: "[email protected]" <[email protected]>
Sent: 6/27/2017 10:01:02 PM
Subject: Re: [AFMUG] So Silicon Valley WISP startup gets $7M investment?
60 GHz PtMP at 1-3 miles? I want some of whatever you're smoking
because it must be some primo stuff. If you put up a few 500 to 800
meter distance 60 GHz PTP links and monitor them over a multi month
period, you'll see that you really don't want to go much longer than
that. I can't imagine that the gain of the Ignitenet 60 GHz sector
antenna is much better than a typical 25, 30 or 60cm parabolic antenna
used for 60 GHz PTP stuff.
If I had to guess the 60 GHz PtMP will be reliable at distance of more
like 400-500 meters, tops, with properly aimed CPEs.
On Tue, Jun 27, 2017 at 6:52 PM, Adam Moffett <[email protected]>
wrote:
What IgniteNet is selling is a 60ghz PTMP with a built in 5ghz backup
radio. It's understood that the 60ghz connection will go down due to
rain fade, but the built-in 5ghz backup should keep the customer
trucking (with reduced capacity). I think you'd be installing at
ranges of 1-3 miles for the 60ghz to run at decent MCS, and at that
range I think you'll still get decent capacity out of the 5ghz.
You'll get a lower speed test, but I'd bet it's possible to design so
that Netflix keeps running.
------ Original Message ------
From: "Chuck McCown" <[email protected]>
To: [email protected]
Sent: 6/27/2017 11:38:32 AM
Subject: Re: [AFMUG] So Silicon Valley WISP startup gets $7M
investment?
1. What is acceptable downtime on pure 60GHz. It is possible to
engineering it to practically no downtime although less economical.
Zero. If it goes down the phone will ring. With a well designed
and installed Canopy system there was no downtime.
2. What is the acceptable backup bandwidth? If there is at least
SOME internet available during 4-5" rains, is that acceptable?
If you are talking about something built in, then the acceptable
backup is whatever fools the customer into thinking that Netflix is
not impacted.
