Kim,
Thanks
so much for your advice. I really couldn’t understand why this was such
a
huge issue. Didn’t seem like a huge deal to me to have a omni antenna
for
this AP.
Let
me run one more question by you. In your estimation, would it be a
correct statement to say that if you had a ANT-1360 (which I think are
intended for use with the MP-620’s), with the correct adapters to make
the cables match up, it should work as an omni for the 1602?
Jimmy
Payne, MCP
Forsyth
County Information Technology
Systems
Support Administrator
110
East Main Street
Suite
130
Cumming,
GA 30040
770-205-4558
From:
Kim Pedersen [mailto:[email protected]]
Sent: Friday, March 20, 2009 7:29 AM
To: Enterasys Customer Mailing List
Subject: Re: [enterasys] AP 1602
Hi Jimmy,
I think I can throw in a couple of cents worth here:
The 1602 (And 4102s too AFAIK/Remember) need the antenna to provide DC
Short or
else the external antenna port won't activate and remains "stuck"
using the internal antenna regardless of which antenna you set the AP
to use in
the software settings.
The Enterasys/Trapeze branded antennas all provide the DC Short, so
they work.
Most other 3rd party antennas don't.
Many amplifiers will provide the DC Short, so if you insert on of those
between
the omni and the AP, it will work correctly.
This bit us in the behind when we were installing a distributed antenna
system
using 70 1602s for the WiFi signal.
As a cheaper and simpler alternative to using amplifiiers, we found a
lightning
arrestor at L-Com that provides the DC short.
(http://www.l-com.com/productfamily.aspx?id=6194)
Our installation had 70 access points, and we ended up getting a 140 of
these
arrestors.
Yes, they are only rated for operation between 2.3-2.7GHz, but they do
the
trick for the 5GHz antenna port as well (With an increase in VSWR)
Hope it helps, and saves you some of the many hours we spent on the
problem.
P.S. We opened a product improvement case with Enterasys, but after a
year they
determined this couldn't be done. I think it must be a limitation in
the Trapeze
design of the hardware, as well as HiPath is the future now
Kind regards,
Kim Pedersen
CNCS Ltd.
Fitzville
Haggatt Hall
Barbados
+1 246 429 8682
Payne, Jimmy R. wrote:
No
they don’t work at all. There is a setting in RASM that
allows you to configure the type of antenna that you are connecting the
AP to.
Either internal or external. The antennas that I have tried, never
switch over
when you make that change and deploy it. I think at one time I heard
someone
say something about the antenna required to have a dc coupler. However,
I am
not sure I know what that means and how to determine if an antenna has
that or
not.
Jimmy
Payne, MCP
Forsyth
County Information Technology
Systems
Support Administrator
110
East Main Street
Suite
130
Cumming,
GA 30040
770-205-4558
From: Huber
Adrian TRAIL
[mailto:[email protected]]
Sent: Thursday, March 19, 2009 3:46 PM
To: Enterasys Customer Mailing List
Subject: RE: [enterasys] AP 1602
That’s
very interesting and odd. When you say they
don’t work, do you mean very poor performance? I noticed all antennas
that are supported by 1602 are 50 ohms, could it be possible that the
antennas
you tried were not 50 ohms? No matter what though, even if you used a
paperclip, you should get some kind of signal, otherwise I’d suspect
maybe it’s a config/defect issue.
Thank
you,
Adrian
G. Huber, CCNA, N+, ESE, ATHC
Network
Analyst
(250)
364 4805
Teck
Cominco Metals Ltd.
25
Aldridge Ave
Trail,
BC V1R 4L8
From: Payne,
Jimmy R. [mailto:[email protected]]
Sent: Thursday, March 19, 2009 12:27 PM
To: Enterasys Customer Mailing List
Subject: RE: [enterasys] AP 1602
No
I have omnis that will work for the 4102s but I need one that
I am certain will work with a 1602. This is the AP that looks like a
smoke
alarm. I have found a couple that will not work but none yet that will.
Jimmy
Payne, MCP
Forsyth
County Information Technology
Systems
Support Administrator
110
East Main Street
Suite
130
Cumming,
GA 30040
770-205-4558
From: Huber
Adrian TRAIL
[mailto:[email protected]]
Sent: Thursday, March 19, 2009 3:24 PM
To: Enterasys Customer Mailing List
Subject: RE:[enterasys] AP 1602
We
used just a regular omni from antennex on our 4102 with a
lightning arrestor. I think we used a 19dBi for max output power.
Unless
I’m mistaken, any antenna will work so as long as you
use the correct wavelength.
Thank
you,
Adrian
G. Huber, CCNA, N+, ESE, ATHC
Network
Analyst
(250)
364 4805
Teck
Cominco Metals Ltd.
25
Aldridge Ave
Trail,
BC V1R 4L8
From: Payne,
Jimmy R. [mailto:[email protected]]
Sent: Thursday, March 19, 2009 12:08 PM
To: Enterasys Customer Mailing List
Subject: [enterasys] AP 1602
Can anyone
advise me of an
omni directional antenna that will work with an AP-1602?
Enterasys
documentation does
not show support
for an omni attached to an AP-1602 however, I can’t imagine that
there isn’t
one that will work. Hope someone knows. Thanks for the help.
Jimmy
Payne, MCP
Forsyth
County Information Technology
Systems
Support Administrator
110
East Main Street
Suite
130
Cumming,
GA 30040
770-205-4558
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