Wow. At 23,000 miles? What kind of EIRP are we talking about? Aren't
they in the 12-15 GHz range?
bp
<part15sbs{at}gmail{dot}com>
On 12/14/2015 3:03 PM, George Skorup wrote:
I remember the guys telling me they easily get -20's at the LNB with
the 1 meter dishes. They will sometimes still have to add attenuators
or it will overdrive the decoders.
On 12/14/2015 2:26 PM, Adam Moffett wrote:
That would be -92dbm on a 1 square meter antenna right?
Sat TV signals are stronger than that I think....I want to say -80's.
Does channel width matter in this formula? Seems like there would be
more total watts if we're summing 30mhz worth of spectrum.
On 12/14/2015 3:19 PM, Chuck McCown wrote:
Found this: “The solar microwave flux is nominally an/absolute/flux,
one solar flux unit defined as [the/very small/amount of] 10 -22^-22
Watt per square meter per Hertz.”
So, 10^-22 would be 10^-19 mW times 6 x 10^9 HZ or 6x10-10mW
10 log 6x10^-10 = –92 dBm of solar radiation. Makes sense the
satellites are probably about that weak too.
*From:* Adam Moffett <mailto:[email protected]>
*Sent:* Monday, December 14, 2015 1:07 PM
*To:* [email protected] <mailto:[email protected]>
*Subject:* Re: [AFMUG] RF exposure concerns
Right. I was hoping some chart would show me w/m2 from the sun near
6ghz, which I could compare to exposure numbers published by the
backhaul manufacturer. Then I could say (backed by primary sources)
that it's 10x (or whatever) worse to stand in the sun than to be
near this dish.
On 12/14/2015 3:01 PM, Chuck McCown wrote:
Stronger than the satellite signal.
*From:* Adam Moffett <mailto:[email protected]>
*Sent:* Monday, December 14, 2015 12:50 PM
*To:* [email protected] <mailto:[email protected]>
*Subject:* Re: [AFMUG] RF exposure concerns
What kind of intensity of microwave energy do we receive from the
sun? I found several charts in nm, but I couldn't readily find one
showing 5-6cm wavelengths.
On 12/14/2015 2:39 PM, That One Guy /sarcasm wrote:
tell them 6ghz has been found to dissipate chemtrails, he will get
behind you
On Mon, Dec 14, 2015 at 1:36 PM, Adam Moffett
<[email protected]> wrote:
You'll also never convince the crazy ones. They made up their
mind before they opened their mouths.
You can only hope to minimize the fear and uncertainty they
can spread.
On 12/14/2015 1:46 PM, Chuck McCown wrote:
Tell them all that the cell phone in their pocket is
exposing them to about 1 million times more RF than a
rooftop installation.
Moreover, the 6 GHz system will focus the energy to
"pencil beam " that points away from the library.
Furthermore, their wifi in that building will expose them
to thousands of times more RF than the rooftop system.
Does the Library have wifi now? Do they use cell phones
now? If so they are hypocrites.
You can get into dBM and antenna patterns but I find it
best to keep it dumbed down as much as practical.
-----Original Message----- From: Craig Baird
Sent: Monday, December 14, 2015 11:19 AM
To: [email protected] <mailto:[email protected]>
Subject: [AFMUG] RF exposure concerns
We have been working with a nearby city to bring Internet
service into
their area. The city government has been very cooperative
because the
existing service in the area is exceptionally poor. Our
plan is to
feed the city with a 6 GHz licensed link to the rooftop of
the city
library. From there we plan to redistribute via
unlicensed. We are
on the agenda to present our plan for use of the library
roof to the
city council this week. I just got an e-mail from the
City saying
that a "concerned citizen" has contacted them saying he
felt there
were FCC issues and regulations with placing equipment on
the library
due to potential RF Exposure to "children and customers of the
library". Anyway, this guy is preparing an informational
packet to
give to the City Council at the meeting. Obviously, I'm
not sure what
this informational packet will contain, but I'm pretty
certain it will
largely amount to fear-mongering, and will likely imply
that we will
give cancer to anyone to enters the library.
I'd like to be prepared with some solid data on RF
exposure from 6 GHz
licensed microwave. Can anyone point me to something that
would be
helpful?
Thanks!
Craig
--
If you only see yourself as part of the team but you don't see
your team as part of yourself you have already failed as part of
the team.
