http://blog.makezine.com/archive/2008/01/make_your_own_vaccum_tube.html
--
Jack Unger - President, Ask-Wi.Com, Inc.
Serving the Broadband Wireless Industry Since 1993
FCC License # PG-12-25133
Author of the Cisco Press Book - "Deploying License-Free Wireless WANs"
Vendor-Neutral Wireless Trainin
Again, interesting post/idea.
The thing about 5.8G omnis (compared to 900 and such) is they are short.
Would be easy to have the vert space to stack one on top of the other.
Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless Broadband
- Original Message -
From: "Chuck McC
I very well could have been wrong on channel size, not understanding what I
was reading.
The FCC cert on link showed a spectrum range of
20Mhz wide: 4.07 w
15Mhz wide: 7.24 w
I have no idea if that has anything to do with available channel widths.
Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet-
I've already sent an email into Redline asking why AirSpan is so much higher
and then why the documentation filed with the FCC further limits what the
grant's maximum is for, The documentation that accompanies the grant has
everything limited to 26 db, well, for 7 MHz. There's no way I'd use 3
Are you sure those channel sizes are correct?
I thought Redline used 3.5 and 7 while AirSpan used 5 and 10.
-
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
- Original Message -
From: "Tom DeReggi" <[EMAIL PROTECTED]>
To: "WISPA General List"
Sent: Sunday, Jan
I thought it was
Airspan 5 mhz channel: 4.07 w
10 mhz channel 7.24 w
Gino A. Villarini
[EMAIL PROTECTED]
Aeronet Wireless Broadband Corp.
tel 787.273.4143 fax 787.273.4145
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Tom
Wow- Thats a huge difference.
For those that don't want to pull up the link...
Redline: 25Mhz ch: 1.3w
AirSpan: 20Mhz ch: 4.07 w
AirSpan: 15Mhz ch: 7.24 w
Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless Broadband
- Original Message -
From: "Mike Hammett" <[EMAIL PROTECT
You can slightly adjust the lengths of the coax between the antennas and the
splitter. You will have to have a quarter wave matching segment too. There
are telescoping transmission lines for this. Line stretchers, phase
shifters, phase adjustable SMA connectors... they go by many names. Some
and the Redline grant:
https://fjallfoss.fcc.gov/oetcf/eas/reports/Eas731GrantForm.cfm?mode=COPY&RequestTimeout=500&application_id=549096&fcc_id=QC8-AN100UA
So Redline unit does have FAR less power available then AirSpan.
-
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
Perhaps, but what good is an FCC rule if there's no equipment available to
use it?
-
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com
- Original Message -
From: "Tom DeReggi" <[EMAIL PROTECTED]>
To: "WISPA General List"
Sent: Sunday, January 13, 2008 2:24 PM
Sub
Interesting. How do you get them slightly out of phase? Is the difference in
length of the LMR, enough? And is the distance apart the mechanism to
increase downtilt, or the amount out of phase? I'm assuming distance apart?
Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless Broadband
Two vertical collinear antennas. One mounted above the other. Fed slightly
out of phase. You can have as much downtilt (or uptilt) as you want.
- Original Message -
From: "rwf" <[EMAIL PROTECTED]>
To: "'WISPA General List'"
Sent: Sunday, January 13, 2008 1:41 PM
Subject: Re: [WISPA]
I agree. A number of years back Part-15 attempted to negotiate this type
effort with Crown Castle. I never really learned why the effort fell
through. Its interesting now that Crown Castle, has bought out some of the
other larger players, and has much less competition to justify the need to
ma
I think this is where WISPA really needs to come in. Why are we not
negotiating contracts with the cell companies that benefit ALL WISPA
members?
Cell companies do it why can't we, as an association do it?
just my $0.1 worth.
ryan
On Jan 13, 2008, at 11:57 AM, Tom DeReggi wr
Thanks for the suggestion.
I am not a fan of any omnis, really, but this needs to be an omni because
this is a mesh AP. Not only that, it is a gateway or root (place where
bandwidth is injected). I don't have the option of different RF hardware.
An array would work, but I don't really want the (RX
Airspan grant:
https://gullfoss2.fcc.gov/oetcf/eas/reports/Eas731GrantForm.cfm?mode=COP
Y&RequestTimeout=500&application_id=686827&fcc_id=O2J-365T
Gino A. Villarini
[EMAIL PROTECTED]
Aeronet Wireless Broadband Corp.
tel 787.273.4143 fax 787.273.4145
-Original Message-
From: [EMAIL P
Mike,
Now that I've read those posts of yours, I better understand your position.
I was not taking reduced power into consideration. I just had in my mind
the 25watts EIRP often mentioned in FCC precentations over the years.
To the best of my knowledge, the AirSpan product that I am familiar wi
Is this because they are pulls from de-installed customers?
Or new, because they buy quantity.
Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless Broadband
- Original Message -
From: Brian Rohrbacher
To: WISPA General List
Sent: Saturday, January 12, 2008 12:23 PM
On a side note... I generally pay less to be on a cell tower than I do to
pay to be on a commercial building roof top of equivellent height.
Cell Towers- More expensive to climb and mainteain, there fore less valuable
Cell Towers- Dont have office space tenants, there fore only valued for the
va
Two issues
1) People so quickly forget the scale involved. It is more hassle for these
companies to do business with a small entity than the revenue they would
receive. Think about it. A sales office with 5-6 agents to manage the sales
for the towers they own. Then there are 5-10,000 tower
Yes, to not use an Omni, but to use an Array.
Max Rad made some of the first ones for 2.4G.
Hyperlinktech makes some 4 sector arrays for 5.8Ghz.
If needing only Verticle polarity, this is easy. Thats the configuration
they sell them in.
Will probably cost you around $600, for the kit with all ant
yikes. Not me! Not ever!
marlon
- Original Message -
From: "Doug Faunt N6TQS +1-510-655-8604" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, January 12, 2008 10:00 PM
Subject: [TowerTalk] How it used to be done!
> http://www.youtube.com/watch?v=6W_7uIapoHc
>
> Free-c
I have an application where I need a 5.8 omni antenna with downtilt.
The coverage diameter of the area is only about 1/10th of a mile total, and
my HAAT is about 50 ft so I will need some pretty severe downtilt.
Gain doesn't really matter, but a higher gain antenna is going to give me a
flatter pat
Parque Montebello community.
JohnnyO
- Original Message -
From: "Gino Villarini" <[EMAIL PROTECTED]>
To: "WISPA General List"
Sent: Sunday, January 13, 2008 8:54 AM
Subject: Re: [WISPA] Service Needed in San Juan
> Hey johhny, I think we might be there is this in the Encantada
>
It's not ATT LOL My NDA doesn't allow me to discuss at this point. I am
hashing out the final details. I will let you know once and if we are in
market so we can spend some time together.
JohnnyO
- Original Message -
From: "Gino Villarini" <[EMAIL PROTECTED]>
To: "WISPA General Lis
They are the biggest here ... currently running hsdpa on the data
network. If you have a national plan, I think you're covered...
What cell project you'll be working on?
Gino A. Villarini
[EMAIL PROTECTED]
Aeronet Wireless Broadband Corp.
tel 787.273.4143 fax 787.273.4145
-Original M
Hey johhny, I think we might be there is this in the Encantada
community?
Gino A. Villarini
[EMAIL PROTECTED]
Aeronet Wireless Broadband Corp.
tel 787.273.4143 fax 787.273.4145
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of JohnnyO
Sent: Sunday
Back when it was Cingular, I tried getting on a tower they own. They
wanted $1600/mo and an engineering study done (usually $2500 or so). I
just talked to the land owner, and he let me build a tower on equally
high ground and I am spending WAY less than $1600/mo and I OWN the tower
for co-locatin
28 matches
Mail list logo