The claim was not "I have the same or slightly better signal, but I'm
running at higher QAM". The claim was "10db better".
I'm not attacking the product Patrick, I'm questioning the validity of
whatever test that person did. I have spoken previously on this list
that WiMax (and I assume LTE as well) will do better than Canopy in NLOS
given equal conditions. When you have that -80something through trees,
Canopy will re-reg (which is their parlance for disconnecting and
reconnecting) while WiMax willl hum along relatively ok. That said,
10db is 10x the receive power. I don't understand how the Compact can
pull 10x the power out of a hat. I stand ready to be educated.
That's exactly what I'm trying to say, except that the-75 for QAM64
5/6 is not an LTE thing vs the 450; it just reflects the quality of
the components of the COMPACT vs the 450 or PW, etc.
TJ, tone does not come across well via email, especially as you don't
know me. I'm aggressive and challenging, but I'm not trying to be a
dick. I apologize if I come off that way. But, re the "silly WISP"
comment -- don't make the mistake in thinking I'm some piker trying to
sell into some space I don't understand. If there's a vendor person
alive that understands "WISPs" any better than I, I'd love to meet him
or her.
On Feb 23, 2015 6:15 AM, "Mike Hammett" <af...@ics-il.net
<mailto:af...@ics-il.net>> wrote:
No, it's a very important part. If LTE needs -75 for top 64QAM and
450 needs -67 for top 64QAM, that's an 8 dB difference in favor of
the LTE. 8 dB in the Tx power or 8 dB in the receive sensitivity
is 8 dB in the link budget. Then there's a few dB here and a few
dB there from different systems such as 4x4, HARQ, etc.
That said, that's assuming no interferer. I'd like to see how they
compare in an environment with a -80 interferer. As Ken has
pointed out a few times, one of 3650's "secret sauce" is that
nobody's there yet to make a ton of noise.
-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
<https://www.facebook.com/ICSIL><https://plus.google.com/+IntelligentComputingSolutionsDeKalb><https://www.linkedin.com/company/intelligent-computing-solutions><https://twitter.com/ICSIL>
------------------------------------------------------------------------
*From: *"Josh Reynolds" <j...@spitwspots.com
<mailto:j...@spitwspots.com>>
*To: *af@afmug.com <mailto:af@afmug.com>
*Sent: *Monday, February 23, 2015 5:43:41 AM
*Subject: *Re: [AFMUG] Grail or Gauntlet? ...or Maybe Just
"Powerpointware"?
Deviates from the point. The question remains -- was something
different between the two setups, such as: antennas or power levels?
--
Josh Reynolds
CIO, SPITwSPOTS
www.spitwspots.com <http://www.spitwspots.com>
On 02/23/2015 02:05 AM, Mike Hammett wrote:
But it changes how much signal is needed to be useful.
-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
<https://www.facebook.com/ICSIL><https://plus.google.com/+IntelligentComputingSolutionsDeKalb><https://www.linkedin.com/company/intelligent-computing-solutions><https://twitter.com/ICSIL>
------------------------------------------------------------------------
*From: *"Josh Reynolds" <j...@spitwspots.com>
<mailto:j...@spitwspots.com>
*To: *af@afmug.com <mailto:af@afmug.com>
*Sent: *Monday, February 23, 2015 1:19:51 AM
*Subject: *Re: [AFMUG] Grail or Gauntlet? ...or Maybe Just
"Powerpointware"?
Sensitivity does not change the power level of the received
signal.
--
Josh Reynolds
CIO, SPITwSPOTS
www.spitwspots.com <http://www.spitwspots.com>
On 02/22/2015 08:42 PM, Patrick Leary wrote:
...also, seriously. You any like it's even possible to
compute a link budget without accounting for sensitivity,
MIMO scheme etc. Thinking dBm and dBi are the only numbers
in the equation has me wondering how experienced you are
Adam. You do realize don't you it's impossible to
understand link budget without knowing a whole host of
things besides the output power and antenna gain?
On Feb 22, 2015 10:37 PM, "Adam Moffett"
<dmmoff...@gmail.com <mailto:dmmoff...@gmail.com>> wrote:
I read that quote before Patrick, and I am forced to
wonder if that individual was in the United States and
running at the correct (legal) power level. And I
wonder if he was comparing the naked 10dbi SM to a
15dbi wimax CPE. You could definitely get 10db more
by turning up the tx power all the way and using a
bigger antenna, and maybe you can do some electronic
magic to make a little more out of the signal you're
getting, but there's no magic that makes more db's
appear. If both systems started with the legal +40dbm
then how does one end up with 10db more at the CPE?
I'm a skeptic by nature.
Testing back to back between Cambium and Telrad
products on the same tower at the same azimuth, we
found an average of 10dB better RF levels with
Telrad’s equipment."
