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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