[WISPA] 3.650 Wimax in the field

2008-07-21 Thread Mike Cowan
With some of the Wimax discussions going on I thought I would throw 
my hat into the ring.

3.650 Wimax using 802.16d only products provides decent connectivity, 
at a higher cost than traditional unlicensed 
gear.  Performance/coverage is on par, or better than 2.4 that most 
of are used to.  Pay a little extra for product, gain access to 
cleaner spectrum and hopefully a rule set that helps keep it cleaner 
than our wild wild west unlicensed world.

Now deploy 3.650 using 802.16e upgradeable products.  The coverage 
difference when using diversity options goes up significantly.  Now 
3.650 begins to act and feel more like a 900Mhz product with NLOS 
coverage capability.  Actually our customers, and our field tests are 
showing that it exceeds 900Mhz often by a large margin.  Here are a 
couple recent field examples all 2nd order diversity:

Customer 1- 8.4 mile NLOS location. blocked by heavy trees .  1.5MB 
download holding CPE in their hand on the ground!  Decided to test 
5.8 at this location and @ 50' AGL the CPE got a link.  5.8 mounted 
on the same tower, same height as 3.650.  The 5.8 system could not 
pass data and could just barely maintain association.

Customer 2- 12.4 miles away at the owners home.  1.0mb on the 
ground.  This location could not be serviced by 2.4 or 5.8 at 40' 
above the ground previously.  The owner is going to mount Wimax on 
the roof and I expect he will se 10-12MB at that height.

Customer 2- 12.6 miles on the ground.  Completely obstructed 6MB down 3MB up.

Customer 3- This is one of the most telling.  Canopy 900 
operator.  3.650 2nd order diversity mounted 10' below Canopy.  100% 
coverage at 3.650 of a small city.  It takes 2 tower locations 
with  900 here to serve the same area.  They gave up field testing 
because it works everywhere.  They the said lets try to break 
it.  We drove to a part of town that is challenged with 900 
coverage.  They found a traditionally bad coverage spot and drove up 
to a big tree, took the CPE out of the vehicle and buried it in the 
tree.  -101 signal.  They then picked up their VOIP phone and called 
the NOC and did a can you hear me now?  Toll quality voice call.

Our internal testing is showing similar results. Using 4th order 
diversity is showing even better results than above.  When you do the 
upgrade to 16e and add Wave II CPE, Katy bar the door.  That coverage 
is nothing less than jaw dropping.  2.5 miles obstructed with a PC 
card!  Same PC card 1 mile away entering a commercial building, no 
signal change.  Not possible with a traditional system.  In this case 
the wall measured a 25db loss, however STC and MRC diversity gains 
completely made up for the attenuation once the paths became uncorrelated.

Bottom line is diversity is the place to be with Wimax.  It is more 
expensive, so find a way to afford it.  Push your vendor for price 
breaks and don't be bashful.  Alvarion for example is willing to work 
to earn business as well as the others.  CPE costs for D and E 
systems are the same today, E will be much cheaper in the near 
future.  Not all Wimax is the same, so test a site or visit one, you 
will walk away amazed.

My two cents, and we carry all D and E products.  Each has its place.

Mike





Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
419-706-7348 Cell
[EMAIL PROTECTED]
www.wirelessconnections.net



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Re: [WISPA] 3.650 Wimax in the field

2008-07-21 Thread Mike Cowan
Hi Scottie,

No, all flat ground but Midwest trees.  Your scenario would be an 
interesting test.

Mike

At 07:59 PM 7/21/2008, you wrote:
Mike you have peaked my interest with the 900Mhz against the 3.65. 
Were any of these tests done with hills? My problem is we have 
hills, and lots of them and trees too. You can't drive much more 
than a mile without going up a hill with a change of 100 - 150 ft in 
elevation. Anyone tested or used 3.65 under these circumstances that 
care to chime in?

Scottie

Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
419-706-7348 Cell
[EMAIL PROTECTED]
www.wirelessconnections.net




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Re: [WISPA] 3.650 Wimax in the field

2008-07-21 Thread Mike Cowan
Many of you have known me for years, some wish they didn't :-).  I am 
the doubting Thomas type and have to test myself before I recommend 
products to a client.  Lets just say that Thomas was satisfied.  Now 
the clients are echoing the same and that is what drives my wagon.
Message-Id: [EMAIL PROTECTED]

Mike


At 08:52 PM 7/21/2008, you wrote:
Same here, I thought it was all marketing hype, if it works like the
poster mentioned, we will need to consider moving up our timetable for
evaluating wimax, 10k a basestation suddenly isn't that bad with the
performance described.

Regards
Michael Baird

  Now this is a 180* of what others have told me, even others offering
  traditional, D, and E products.
 
 
  --
  Mike Hammett
  Intelligent Computing Solutions
  http://www.ics-il.com
 

Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
419-706-7348 Cell
[EMAIL PROTECTED]
www.wirelessconnections.net




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Re: [WISPA] 3.650 Wimax in the field

2008-07-22 Thread Mike Cowan
I believe we were at 37dbm EIRP at both ends of the link.  I agree 
that we can't change physics and I expected the same letdown that we 
all had when OFDM hit the scenes for 5.8ghz.  All the tests I 
mentioned were using Alvarions base station with 2nd order 
diversity.  2nd order nets a 3db increase in transmit power and 12 db 
increase in uplink.  4th order is a 6db and 19 db increase on 
rx!  Add subchannelization on top of this and I begin to see where 
the manufacturers R  D money went.  We are trying to better 
characterize how 3.650 propogates with no diversity, 2nd order, and 
4th order as well as comparing same to 900Mhz.  To that end we have 
installed 3.650 and 900 on the same tower, same AGL at 37 and 36 
EIRP.  Initial results within 1/2 mile show that 900 bests 3.650 from 
a signal strength perspective, but 3.650 normally has better 
thruput.  However there is a section northeast of the tower that is a 
forest very close to the tower and behind that forest 3.650 coverage 
is spotty and 900 is fair.  3.650 apparently does not like its 
nearfield impacted.  Out at the 2 mile range is where this begins to 
get interesting.  3.650 bests 900 on an RSSI measurement at all 
points tested.  Of course 3.650 bested on performance at those 
locations as well.

Scottie had asked about hilly terrain and I want to test in that 
environment.  My gut tells me no go through a hill but I have seen so 
many good links at locations non wimax gear couldn't go that I am not 
ready to follow my gut and say no way to hills.  We are going to put 
Wimax into a large coal mine application which is no tress and BIG 
holes in the ground.  Propogation analysis shows we will need 5 base 
stations to cover the target area.  I am betting that 2 or 3 bases 
will actually do the job once we begin the field testing.

We also just completed field measurements of a 3.650 install.  In 
this project we created a 2 meter High resolution Propogation study 
to predict coverage.  Once these studies are tuned with real world 
field measurements we expect to see a predicted vs actual RSSI 
variance of less than 3db.  We will also then begin to understand 
what real world attenuation values an oak vs a maple tree 
represent.  These 1 or 2 meter studies are flat awesome.  Through our 
in house process we generate trees and buildings as clutter + 
anything else of value to the prediction.  Now the application knows 
about every tree, even the one in the curblawn.  We are doing a high 
res extraction for our test site and will do an analysis at 900, and 
3.650 using each variant of diversity.  This data will be correlated 
and tuned for actual field results.  I will make that data available 
once it is complete and that will tell a black and white story of 
what one can expect from the tested configurations.

I am seeing that Wimax is a little harder to predict coverage as 
accurately as a traditional radio.  What we are seeing is the prop 
model shows no coverage, field experience tells us that the model is 
correct.  Field testing shows that we have Wimax coverage where we 
believe we should not.  We may need to move to a 3D Ray Tracing model 
to more accurately predict Wimax, but this increases our processing 
time by a factor of 3 :-(.  Luckily we have the best software 
available and it allows us considerable flexibility, not for the 
faint of heart though, I think at last tally we have over 500K invested :-(.


Mike





At 03:33 AM 7/22/2008, you wrote:


insert witty tagline here

- Original Message -
From: Mike Cowan [EMAIL PROTECTED]
To: WISPA General List wireless@wispa.org
Sent: Monday, July 21, 2008 4:06 PM
Subject: [WISPA] 3.650 Wimax in the field


 
  Customer 1- 8.4 mile NLOS location. blocked by heavy trees .  1.5MB
  download holding CPE in their hand on the ground!  Decided to test
  5.8 at this location and @ 50' AGL the CPE got a link.  5.8 mounted
  on the same tower, same height as 3.650.  The 5.8 system could not
  pass data and could just barely maintain association.

I'm aware of the attenuation of trees on 5 ghz.   It's deadly serious :)

But the question I have is...  Exactly what EIRP at the acess point, and
what at the client?

Adjusting the MAC does not magically change the physics of how or why RF
does or does not get attenuated by trees or dirt or buildings, or whatever.
I realize you can improve signal propagation and decoding reliability with
OFDM, but it does not violate the law of RF and attenuation.

On hte other hand, if you build a good enough front end, you can use
extraordinary sensitivity to hear and decode the RF signals at very low
levels.  So, that all being said,  What was the EIRP at the AP and CPE end?

Does anyone here have solid information on the attentuation of 3.65 ghz t
hrough trees?   A random guess would put it between 2.4 ghz and 5 ghz, but
perahps wavelenth at that frequency is amenable to penetration of foliage -
lower than I would expect

Re: [WISPA] Connect Ohio Program? anyone heard of this

2008-08-12 Thread Mike Cowan
This is the ConnectKentucky group expanding their reach to Ohio, 
then the rest of the nation.  It is a cleverly crafted organization 
finely tuned to remove money from government projects and place same 
in their own.   I believe they were recently tossed out of the good 
graces with the KY governor.  Review some of the maps they have 
created and charged the states very good $$ for.  Very inaccurate and 
not representative.  Ohio just pledged $ 10MM to this I believe.  In 
KY they spent a boatload of money, and STIFLED broadband expansion in 
3 counties and did nothing in the others.

After detailed review of KY they decided that the 3 counties that had 
BB needed more.  They got state funding, did a bid and awarded it to 
a non-wireless company.  That company took 1 year to get the 1st site 
up and it worked poorly.  All the while, the local WISPS said they 
were not going to expand in their market areas because they felt they 
could not compete with a state funded competitor.  Today, the new 
network is not built out, the local WISPS are not interested any 
longer and not growing.

So in KY a boatload of money spent, all kids were left behind, and 
private sector growth has been stifled.  Now Connected Nation wants 
to take this model to the rest of the US.  Doesn't sound like a good 
proposal to me.

Mike



Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
419-706-7348 Cell
[EMAIL PROTECTED]
www.wirelessconnections.net




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[WISPA] Aperto Wimax Promotion

2009-01-05 Thread Mike Cowan
Welcome aboard Patrick.  We are pleased to be working with you.  In support
of your promotion we will be providing personalized Aperto training via our
Webinar process for those that take you up on the promotion.  The training
is open ended, but normally takes 6 hours.  This should prepare the operator
for the install portion and the operator will have maximum opportunity to
learn advanced features from the Aperto engineer while he is on site.  We
also will provide 10 meter propagation models in support of a successful
deployment.  Those of you located in Canada and the Caribbean may not be
able to utilize 10 meter data, as those areas in some cases only go to 30
meter.

Mike 


Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
419-706-7348 Cell
419-668-4077 Fax
mi...@wirelessconnections.net
www.wirelessconnections.net




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[WISPA] 3.650 and the FCC

2009-03-21 Thread Mike Cowan
Hi Folks,

 

Help me understand what the FCC is doing..

 

They are approving low end 3.650 gear, PTP gear etc.  A lot of this gear is
the spit and bailing wire type systems that are not spectrally efficient,
don't support GPS, and certainly don't coordinate or play nice with other
systems.  I am afraid we are about to see one the best spectrum allocations
in recent times turn into a garbage band.  I am sure the FCC desires that
everyone use this spectrum to its fullest extent, but the recent
certifications spell doom for the band altogether.  I have coordinated
multiple systems in the same airspace for a number of our customers.  With
GPS this is a simple matter of planning.  Without GPS it is flat impossible
with only 25Mhz to work with.

 

Am I missing something?

 

Mike

 

Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
419-706-7348 Cell

419-668-4077 Fax
 mailto:mi...@wirelessconnections.net mi...@wirelessconnections.net
 http://www.wirelessconnections.net/ www.wirelessconnections.net




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Re: [WISPA] 3.65 Wimax

2009-06-05 Thread Mike Cowan
It is true that a 802.11 based 3.650 product is not going to be any better
than 2.4.  A wimax based 3.650 product is going to gve field performance
much like 2.4.  A diversity based 3.650 system is going to provide coverage
much like, and oftentimes exceeding that of 900Mhz.  These observations are
based on real field deployments in diverse terrain across the US.

Mike





Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
419-706-7348 Cell
419-668-4077 Fax
mi...@wirelessconnections.net
www.wirelessconnections.net

-Original Message-
From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On
Behalf Of Travis Johnson
Sent: Monday, June 01, 2009 1:33 AM
To: WISPA General List
Subject: Re: [WISPA] 3.65 Wimax

Hi,

We have two small 3.65 repeaters (serving only other small WiPOPs). The 
3.65 does work, but our experience was that it did not do any better in 
NLOS than 2.4ghz would already do (when comparing the same type of radio 
systems). There are several other radio features and tricks that the 
higher-end WiMax companies are doing to get better NLOS, but it is still 
not comparable to 900mhz.

In our area, there is a provider using 2.5ghz licensed WiMax and they 
still have NLOS issues where our 900mhz Trango system will work just 
fine. YMMV.

Travis
Microserv

Jeremie Chism wrote:
 Several months ago I paid the small fee for the 365 license but have not
 used it. We are looking to deploy something that has a little less
 interference since there is quite a bit of 900mhz and 5.8ghz equipment
 deployed where we are.   Has anyone tested any of this equipment and how
has
 it worked.  Also does it possess any NLOS capabilities (I know all the
 manufacturers claim they do).
 Thanks

 Jeremie Chism
 Triton Communications





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[WISPA] unsubscribe

2009-08-13 Thread Mike Cowan
unsubscribe

 

Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
419-706-7348 Cell

419-668-4077 Fax
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 http://www.wirelessconnections.net/ www.wirelessconnections.net

 




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[WISPA] Kudos to Scriv!

2006-09-24 Thread Mike Cowan

Hi all,

I just have to say how much I enjoy working in the WISP 
marketplace.  One of my customers had a power supply failure this 
weekend.  No inexpensive way to get a replacement to them, and no, no 
spare on hand.  I looked at our client map and saw Mount Vernon.net 
was close to them.  One email to Scriv and he happily gave up one of 
his spares.  The system was down for hours instead of days as the result.


And now the rest of the story...

The WISP that had the failure is a privately owned system like 
most.  The owner/developer of the system got called to duty in 
Iraq.  In fact he sent me an email early from Iraq to tell me of the 
problem.  His wife has taken over and is running the show while he is 
serving.  She is doing a bang up job too!


Thanks Again Scriv!

Mike




Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
[EMAIL PROTECTED]
www.wirelessconnections.net

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Re: [WISPA] Are these good or bad Alvarion VL statistics...

2006-10-11 Thread Mike Cowan

Hi Brad,

A lot of what Dave has said is good info and my reply is a bit 
redundant.  The lights on the bottom of the radio should really only 
be used for a rough indication of signal level.  This is true for 
most radio products that offer lights for RSL.  Once you have 
achieved association via lights on the bottom it is best to Telnet as 
Dave suggested and then tune for highest SNR.  The lights can help 
here, but only roughly.  If you are looking at continuous link 
quality display that will give you the fine indications to help you 
aim and achieve the best connection possible.  You may also see the 
effects of heavy multipath while watcing this in the form of bouncing 
SNR.  This can also be seen in the lights as little light 
movement.  OFDM does a much better job with multipath than a 
traditional radio, but it does not eliminate MP type problems.


Best SNR is only part of the equation.  The counters also need to be 
reviewed and I find the Breezeconfig site survey page the easiest to 
read.  You need to look at retrans vs total as a percentage and also 
look at drops which are frames rxtx that never successfully made 
it.  You also need to look at the per rate counters, particularly if 
the area is noisy.  The radio will auto modulate from level 8 to 
level 1 based on noise.  The automodulation scheme is pretty decent 
in the radio but I klike to hard set the max mod rate when noise is 
present. The radio will always try to mod at the highest level and 
sometime that level might be close to the SNR threshold and 
performance may be acceptable to the algorithm but not acceptable to 
you.  If I see the radio counters showing many fails at mod8, fewer 
at mod 7, and clean at mod 6 I would lock the radio to 6.  No sense 
in allowing it to try to do better than 6 if conditions mostly won't allow it.


Channel size (10 or 20Mhz) is another tool available to help find 
open spectrum to run on.


Hope this helps,

Mike






Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
[EMAIL PROTECTED]
www.wirelessconnections.net

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RE: [WISPA] Are these good or bad Alvarion VL statistics...

2006-10-11 Thread Mike Cowan
The numbers for the AU look decent.  The SU numbers are not as 
good.  I might consider moving the SU to mod 5 and leave the AU at 
6.  10Mhz channels gives you more flexability to work around noise 
and can help.  The perfect world real thruput of an AU is 35MB on ver 
4.0 firmware at 20Mhz, and 1/2 that at 10Mhz.  It may be worthwhile 
to change channels and watch for resutls, ignoring the spectrum 
analyzer recommendations.  You might get lucky that way especially 
when using 10mhz channels.


Mike



At 09:16 AM 10/11/2006, you wrote:

Hello Mike,

Certainly the SNR is better than LEDs, but not as important or useful as a
RSSI reading.  As others here have pointed out it is very possible the SNR
could improve by misaligning the link.  A misaligned link will only cause
you more trouble down the road.  I'm hoping Patrick follows through and
pushes the Alvarion engineers to provide it.

During one of the many calls into Alvarion Support we did look into the
modulation counters and we settled on forcing the AU and SU to 6.  The AU
counters look like this:

Modulation Level:| 1 2 3 4 5 6 7 8 |
SUCCESS :| 1 1 1 1 1 2760796 0 0 |
FAILED  :| 0 0 0 0 0 0 0 0 |

The SU looks like this:

Modulation Level:| 1 2 3 4 5 6 7 8 |
SUCCESS :|25 1 1   110  3604 2139679 0 0 |
FAILED  :| 0 0 0 72785 0 0 |

Average Modulation Level: 6

The SU counters were reset last night and as such do not reflect usage
during business hours.  I'm sure the interference increases during the day
as neighboring radios at the AU side become more active.  Are these
acceptable results?

Alvarion never suggested trying a 10MHz channel and at this point we are
willing to try anything before we are forced to remove the VL gear all
together.

I appreciate your input.

Best,


Brad


-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Mike Cowan
Sent: Wednesday, October 11, 2006 6:11 AM
To: WISPA General List
Subject: Re: [WISPA] Are these good or bad Alvarion VL statistics...

Hi Brad,

A lot of what Dave has said is good info and my reply is a bit
redundant.  The lights on the bottom of the radio should really only
be used for a rough indication of signal level.  This is true for
most radio products that offer lights for RSL.  Once you have
achieved association via lights on the bottom it is best to Telnet as
Dave suggested and then tune for highest SNR.  The lights can help
here, but only roughly.  If you are looking at continuous link
quality display that will give you the fine indications to help you
aim and achieve the best connection possible.  You may also see the
effects of heavy multipath while watcing this in the form of bouncing
SNR.  This can also be seen in the lights as little light
movement.  OFDM does a much better job with multipath than a
traditional radio, but it does not eliminate MP type problems.

Best SNR is only part of the equation.  The counters also need to be
reviewed and I find the Breezeconfig site survey page the easiest to
read.  You need to look at retrans vs total as a percentage and also
look at drops which are frames rxtx that never successfully made
it.  You also need to look at the per rate counters, particularly if
the area is noisy.  The radio will auto modulate from level 8 to
level 1 based on noise.  The automodulation scheme is pretty decent
in the radio but I klike to hard set the max mod rate when noise is
present. The radio will always try to mod at the highest level and
sometime that level might be close to the SNR threshold and
performance may be acceptable to the algorithm but not acceptable to
you.  If I see the radio counters showing many fails at mod8, fewer
at mod 7, and clean at mod 6 I would lock the radio to 6.  No sense
in allowing it to try to do better than 6 if conditions mostly won't allow
it.

Channel size (10 or 20Mhz) is another tool available to help find
open spectrum to run on.

Hope this helps,

Mike






Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
[EMAIL PROTECTED]
www.wirelessconnections.net

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Mike Cowan
Wireless Connections
A Division of ACC
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419-660-6100
[EMAIL PROTECTED]
www.wirelessconnections.net

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Re: [WISPA] Sprint / Nextel to use 900mz for iDen

2006-10-26 Thread Mike Cowan
Filters fix this problem quite handily.  We recommend one on every 
system needed or not.  I don't see an issue here.


Mike



At 07:07 PM 10/26/2006, you wrote:

ISM 902-928.

Exact band and Power limit is relevant. Currently, the top 25% of 
ISM 900 bandwidth (channel 4) is unusable, in MANY areas, due to 
blead over from 930 Licensed high power gear (500W).  If the same 
thing were to occur at the lower portion of 900 ISM bandwdith, it 
could kill Channel 1 also, horribly effecting WISPs using 
unlicenced.  They also may be requesting to use higher power on the 
actual ISM bands, argueing Public Safety is more important than 
unlicensed use.  Iftheir request is granted, specifics should be 
lsited on how they are going to prevent interference with existing 
unlicensed band users.  Remember that the goal may not only be to 
use the spectrum. They have benefit in killing off all the 900Mhz 
WISPs, that could compete with Sprint/Nextel Next generation WiMax 
type Licensed  700M-900M solutions.


Tom DeReggi
RapidDSL  Wireless, Inc
IntAirNet- Fixed Wireless Broadband



Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
[EMAIL PROTECTED]
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RE: [WISPA] Alvarion Comnet Radios have arrived

2006-12-22 Thread Mike Cowan

Wow Brad,

With as long as you have been at this and the knowledge level you 
have I am surprised you could be so far off the mark on this one.  VL 
does automodulate and has better RF characteristics than their 
hoppers did.  It won't backoff and die when presented with noise and 
will still transmit.  It is THE business class product 
IMHO.  Alvarion is making an effort to reach out to the WISP market 
by making this radio available at this reduced price.  It is the 
exact same radio that normally costs more.  They are trying to 
empower the WISP to use quality gear.  To say the gears quality has 
gone down, hence a lower price is simply not true.


Mike Cowan


At 02:11 PM 12/22/2006, you wrote:

Hello Marlon,

VL won't be a good choice as a committed rate business grade product as it
will modulate down in a noisy environment.  Without any RX threshold
mechanism the VL radio begins to slow and drop packets under heavy business
class loads in unfriendly RF environments.  Even the references given to me
by Alvarion while overall have been happy with the product are not using VL
for committed rate business class service.  IMO, Alvarion is now pushing the
VL product as a residential best effort solution...hence the dramatic drop
in price.

In Patrick's words:
A $285 all inclusive CPE with nothing extra to buy, piece together, etc.
should fall within the residential business model of even small WISPs.

We've been there and almost lost a valuable client trying to use VL for a
committed rate business class customer.

The VL gear is a high quality product with a number of valuable features,
but it is missing a few key items that keep it form performing well (or at
all) as a committed rate business class solution.  Only reason for my post
was because of your intended use of the VL product.

Best and Merry Christmas!


Brad



Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
[EMAIL PROTECTED]
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RE: [WISPA] Alvarion Comnet Radios have arrived

2006-12-22 Thread Mike Cowan

Hi Brad,

The radio will auto modulate down from mod level 8 to 1 when faced 
with interference.  They won't stop transmitting when interference is 
present however.  They do work like any radio out there, two way 
radio, Ip radios, Trango radios all need a specific C/I ratio to run 
correctly.  I don't know that I can properly engineer a Trango, 
Alvarion, or Redline link to cope with future unknown 
interference.  Sure, big antennas, tight beams, and strong C/I ratios 
is the way to go but is it enough?  Most of the time probably.  So we 
engineer our links to be as resiliant as possible, but when somebody 
points that 4 foot dish down our throat I want a radio that will drop 
mod levels and cope with it, albeit at a reduced speed rather than 
one that only has 1 speed.  I thought Trango added mod levels to 
their 5.8 product to help cope.  Is that true or did it not get built?


Merry Christmas!

Mike



At 03:26 PM 12/22/2006, you wrote:

Wow back at ya there, Mike!  grin

Never said the product was less in quality in any form.  Simply stating the
gear doesn't perform well under load in unfriendly RF environments.
Alvarion Techs themselves acknowledge the radios back off modulation speeds
in the face of noise.  Do you know something they don't?  Please share, I'd
love to begin re-deploying VL if I knew it wouldn't cower in the face of
noise.

Trango on the other hand has a RX threshold that will enable the radio to
continue to perform at its published rates regardless of the RF environment
if the link is engineered correctly.

Best and Merry Christmas!


Brad



-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Mike Cowan
Sent: Friday, December 22, 2006 2:16 PM
To: WISPA General List
Subject: RE: [WISPA] Alvarion Comnet Radios have arrived

Wow Brad,

With as long as you have been at this and the knowledge level you
have I am surprised you could be so far off the mark on this one.  VL
does automodulate and has better RF characteristics than their
hoppers did.  It won't backoff and die when presented with noise and
will still transmit.  It is THE business class product
IMHO.  Alvarion is making an effort to reach out to the WISP market
by making this radio available at this reduced price.  It is the
exact same radio that normally costs more.  They are trying to
empower the WISP to use quality gear.  To say the gears quality has
gone down, hence a lower price is simply not true.

Mike Cowan


At 02:11 PM 12/22/2006, you wrote:
Hello Marlon,

VL won't be a good choice as a committed rate business grade product as it
will modulate down in a noisy environment.  Without any RX threshold
mechanism the VL radio begins to slow and drop packets under heavy business
class loads in unfriendly RF environments.  Even the references given to me
by Alvarion while overall have been happy with the product are not using VL
for committed rate business class service.  IMO, Alvarion is now pushing
the
VL product as a residential best effort solution...hence the dramatic
drop
in price.

In Patrick's words:
A $285 all inclusive CPE with nothing extra to buy, piece together, etc.
should fall within the residential business model of even small WISPs.

We've been there and almost lost a valuable client trying to use VL for a
committed rate business class customer.

The VL gear is a high quality product with a number of valuable features,
but it is missing a few key items that keep it form performing well (or at
all) as a committed rate business class solution.  Only reason for my post
was because of your intended use of the VL product.

Best and Merry Christmas!


Brad


Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
[EMAIL PROTECTED]
www.wirelessconnections.net

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Wireless Connections
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419-660-6100
[EMAIL PROTECTED]
www.wirelessconnections.net

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Re: [WISPA] Cisco Wireless Bridges

2007-10-04 Thread Mike Cowan

Cough, cough cough...


At 01:48 PM 10/4/2007, you wrote:

Is anyone using the Cisco 1300 or 1400 series AP/Bridges?



I know they are a bit pricing, but was curious how they performed in a noisy
environment?




Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
[EMAIL PROTECTED]
www.wirelessconnections.net



** Join us at the WISPA Reception at 6:30 PM on October the 16th 2007 at ISPCON 
**
** ISPCON Fall 2007 - October 16-18 - San Jose, CA   www.ispcon.com **
** THE INTERNET INDUSTRY EVENT **
** FREE Exhibits and Events Pass available until August 31 **
** Use Customer Code WSEMF7 when you register online at 
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Re: [WISPA] Alvarion Quote

2007-10-09 Thread Mike Cowan

Good to hear you are going to use ALV!

John will get a quote over to you.

Mike


At 10:23 AM 10/9/2007, you wrote:
I finally have my contracts all hammered out.  I'm ready to buy 2 
Alvarion VL radios.   Looking for 5.8 gig.  Standard license (25 
subs, 6 meg speed). I'll probably need some config help as this is 
my first set of these.


I'm also going to want 5 6 meg cpe.  (looking for comnet pricing on these)

I'm ready to send out a check so please send me your OFF LIST quotes.

thanks,
marlon



Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
[EMAIL PROTECTED]
www.wirelessconnections.net



** Join us at the WISPA Reception at 6:30 PM on October the 16th 2007 at ISPCON 
**
** ISPCON Fall 2007 - October 16-18 - San Jose, CA   www.ispcon.com **
** THE INTERNET INDUSTRY EVENT **
** FREE Exhibits and Events Pass available until August 31 **
** Use Customer Code WSEMF7 when you register online at 
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RE: [WISPA] Alvarion VL TRUTH

2007-11-12 Thread Mike Cowan

900 VL is coming

It will be an outstanding product.  I already placed a huge inventory order.

Mike



At 08:06 PM 11/10/2007, you wrote:

We have some VL in the air, real noisy area. We had to run 10Mhz channels on
H-POL, so we see 11-12Mbps net TCP throughput. We run VOIP on it also, Works
very well. I think we paid somewhere around 4000 per AU, and 399 per
SU-A-5.8-6-BD-VL hardware Rev E. I honestly like it better than Canopy. We
just install it and forget it. This stuff just plain works. Now if only they
would make VL in 2.4Ghz and 900Mhz.

Mike Bushard, Jr
Wisper Wireless Solutions, LLC
320-256-WISP (9477)
320-256-9478 Fax


Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
[EMAIL PROTECTED]
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Re: [WISPA] Wireless Backhaul options/test/results

2007-12-10 Thread Mike Cowan

Hi Cameron,

You should be able to see 35MB from a VL-AU running version 4.x 
frimware.  32MB if running 3.x.  It is not shaped by direction at the 
factory, you set up/down limits in the SU, or set it to wide open and 
then you shpould be able to utilize full rate up or download.


The B100s are seeing actual 70-75MB (TCP/UDP) and are also not 
limited to direction and speed.  And the unit is good for 80K packets 
per second.


Mike



At 11:11 PM 12/9/2007, you wrote:

Hello all,

I am in the need of upgrading some backhauls. We are currently using
Alvarion AUVL units with a SU-54-BD. According to Alvarion, this link is
only capable of 16mbit each way (Alvarion, please call it a 32mbit radio.)
We have looked into results on users who use Alvarion B100, Trango Link
45, etc..

We are open to all options...As long is it works very well. The link is
about 3 miles, but we have another link that is causing the need for the
upgrade that is about 20 miles.

Trango has licensed gear in the 6ghz and 18ghz line that is very
impressive, but just too expensive for us right now.

I would like to know if people are using B100 what is the up/down max
throughput that you have seen? 50/50? etc.. Are you running VoIP over
this? Alvarion claims 1000 concurrent calls over this link, i'm sure many
of you have not even dented this number.

I am growing to be a big fan of Trango, but have been well, but their
packet per seconds is a lot less than Alvarion B gear at almost 40,000
compared to trango at around 10,000.

Thanks,

I man in dire need of a lot of bandwidth, distance and no spectrum to put
it

-Cameron



Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
419-706-7348 Cell
[EMAIL PROTECTED]
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Re: [WISPA] 3.65 needs more lobbying (was Re: One Ring Networks To Rollout New WiMAX Service)

2008-01-12 Thread Mike Cowan
Not sure why but the FCC dinged Redline 10DB of tx power due average 
vs peak power calculations.

Mike



At 12:26 PM 1/12/2008, you wrote:
IIRC,

3.65 ghz rules allow 1 watt EIRP per each mhz of bandwidth, thus a 7.5
Mhz Radio would be allowed 7.5 Watts of EIRP, 10 Mhz radio would be 10
Watts EIRP ...


Redline cert does not reflect this... don't know why

Airspan certification does get really close to it

Mind me but 10 Watts EIRP if allot (about 40 db)

Vendors should seek maybe 15 or 20 mhz channels


Gino A. Villarini
[EMAIL PROTECTED]
Aeronet Wireless Broadband Corp.
tel  787.273.4143   fax   787.273.4145

Mike Cowan
Wireless Connections
A Division of ACC
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Norwalk, OH  44857
419-660-6100
419-706-7348 Cell
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Re: [WISPA] Alvarion B28?

2008-02-25 Thread Mike Cowan
Hi Cameron,

Give me a call tomorrow at the office and we'll diag this together.

Mike


At 10:03 AM 2/25/2008, you wrote:
Hello All,

I have a couple dozen of B14 and/or B28 units currently in service. We
deployed a new 5.8 B28 set for a 24 Mile link. When installed it was
great. Strong signal around 29+ SNR on either end.

We are using 29dbi (2 foot) dish Pac Wireless on either end with ATPC
turned on. Recently, we have had problem with the link randomly going
up/down. Odd, we have checked everything multiple times, we have
replaced indoor/outdoor units on either end trying to rule them out,
same result. Replaced Feedhorns/Cable same results. Sometimes the link
runs for 6 days without a hitch and other barely makes it 2 hours (very
random). At this point, we think it is somewhere in configuration, but
from what I can tell, they are basically a mirror to the 2 dozen other
units we are using. We have ruled out interference at either site with
many spec scans. Does anybody have any thoughts on why this may be
happening?

Thank You,
Cameron Kilton
Broadband Department
Assistant Systems Administrator
Midcoast Internet Solutions
http://www.midcoast.com/
[EMAIL PROTECTED]
(207)594-8277 ext. 108

Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
419-706-7348 Cell
[EMAIL PROTECTED]
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[WISPA] Test

2008-03-03 Thread Mike Cowan


Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
419-706-7348 Cell
[EMAIL PROTECTED]
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[WISPA] Fwd: [WISPA Approved Ad] Introducing BreezeACCESS EZ - The WISP Business Just Got EZ

2008-03-03 Thread Mike Cowan
Here is a link for the spec sheet on the product:

http://www.wirelessconnections.net/images/BreezeACCESS_EZ_Product_Announcement.pdf


Mike




Subject: [WISPA Approved Ad] Introducing BreezeACCESS EZ - The WISP Business
 Just Got EZ
X-BeenThere: [EMAIL PROTECTED]
X-Mailman-Version: 2.1.9
Sender: [EMAIL PROTECTED]
X-RCPT-TO: [EMAIL PROTECTED]
X-IMail-ThreadID: 154d0372ab31


Alvarion, Inc. is proud to launch BreezeACCESS EZ, an entirely new
WISP line operating in the 5 GHz bands. EZ is designed from the ground
up to provide small and rural WISPs what they need and want at a
remarkably affordable price . no more than $255 per complete SU even
in single quantities.


What's makes EZ so special, besides the price?


** provides a universal multi-band subscriber unit (SU) to connect to
any 5 GHz band EZ access unit (AU) so your installers carry only one
part. You set the country code and you tell the EZ SU which bands and
frequencies to scan.

** EZ uses OFDM technology to enable near and non-NLOS connections to
maximize subscriber access in your cell.

** The SU comes complete with an integrated 17 dBi antenna and
comprehensive RSSI LEDs in a unit that measures only about 8 inches
corner to corner. PoE and mounting kit are included with every SU.

** EZ is RoHS compliant, certified to IP67 environmental specifications
and is manufactured using ISO certified processes to provide you with
the quality you expect from Alvarion.

** The rugged EZ AUs come in 5.3, 5.4 and 5.8 GHz versions and have
extremely low wind loading.

** AUs use an external N connector and come complete with your choice of
omni, 120, 90 or 60 degree sector.

** EZ features dual flash memory for safe and sure configuration and
software downloads.

** EZ, when operating in 5.4 GHz, implements Alvarion's advanced
intelligent DFS2.


Alvarion is releasing EZ after testing by a number of your peers who
do not run Alvarion-based WISPs. They loved the simplicity, ruggedness
and performance and urged Alvarion to release EZ to the market right
away. Try it and we think you'll agree that deploying excellent
performance, revolutionary simplicity combined with Alvarion quality
has never been so EZ.



Find out complete details and order information about EZ from the
following Alvarion-authorized EZ distributors:

Wireless Guys   [EMAIL PROTECTED] or 805.578.8590

Wireless Connections[EMAIL PROTECTED] or 419.660.6100

Winncom Technologies[EMAIL PROTECTED] or 440.498.9510

PCS Technologies[EMAIL PROTECTED] or 800.659.2170



Sincerely,

Patrick Leary
AVP, Market Development
Alvarion, Inc.
o: 650.314.2628
c: 760.580.0080
[EMAIL PROTECTED]

Mike Cowan
Wireless Connections
A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
419-706-7348 Cell
[EMAIL PROTECTED]
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Re: [WISPA] Fwd: [WISPA Approved Ad] Introducing BreezeACCESS EZ - The WISP Business Just Got EZ

2008-03-03 Thread Mike Cowan
It is standard CAT5 outdoor rated.  Quality stuff but guiys use their 
own all the time.  The indoor unit is POE and smart enough to have 
signal strength, ethernet link, and wirleless link lights.

Mike


At 03:35 PM 3/3/2008, you wrote:
Interesting.  Is the cable between the IDU and ODU just standard cat5
outdoor, or is there something special about their CBL/BB wire?  Is
the indoor unit just a poe adapter, or is there more intelligence in it?

Randy

Mike Cowan
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A Division of ACC
166 Milan Ave
Norwalk, OH  44857
419-660-6100
419-706-7348 Cell
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Re: [WISPA] Problems with Alvarion BreezeAccess VL and Breeznet B100

2008-04-13 Thread Mike Cowan
That's me!

Thanks for the kind words John.

I would 1st run a spectrum analysis to see what the radio thinks it 
hears.  Channel select accordingly.  In a high noise environment go 
the the advanced menu, air interface, noise immunity state control 
and set it to manual.  Give that a shot.

Mike



At 03:23 AM 4/13/2008, John Scrivner wrote:
I am copying a friend of mine at a company called Wireless 
Connections. His name is Mike Cowan. He is an RF engineer who 
specializes in Alvarion issues. He has helped me dramatically 
improve our VL and B-100 performance. Feel free to contact him for 
further assistance. There are many things you can do to make these 
system perform flawlessly in these bands.
John Scrivner


Mike Cowan
Wireless Connections
A Division of ACC
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Norwalk, OH  44857
419-660-6100
419-706-7348 Cell
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[WISPA] 3.650

2008-05-16 Thread Mike Cowan
Hi All,

How many of you have deployed 3.650 in your networks?


Mike



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