... and that being said, when we did testing on our radios for CE, tests included "conducted emissions" which meant in one test, emissions from the cat5 cable connecting our radio unit to the POE injector.
A well-known brand, clearly stamped "CE" and "FCC" approvals on the base, failed miserably. All the other ones we had passed the test. We tested others from the same "rogue vendor", those failed too.
Fortunately, we caught this at the appropriate time and we only recommend/sell the good ones.
Bottom line, some people cut too many corners, and the stamped "approval label" may mean nothing.
Best regards
Stephen
======================================
Cablefree Solutions Ltd
Tel: +44(0)20 8941 7975
Fax: +44(0)20 8941 2410
Web: www.cablefreesolutions.com
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: 28 June 2006 19:43
To: 'WISPA General List'
Subject: RE: [WISPA] $100 CPE?
You also need to certify for CE/UL which is in part the power system.
Sincerely, Tony Morella
Demarc Technology Group, A Wireless Solution Provider
Office: 207-667-7583 Fax: 207-433-1008
http://www.demarctech.com
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On
Behalf Of Sam Tetherow
Sent: Wednesday, June 28, 2006 2:05 PM
To: WISPA General List
Subject: Re: [WISPA] $100 CPE?
Not that I disagree with your statement about cheap equipment and getting
what you pay for, but the uncertified comment doesn't make any sense. You
don't certify a POE, you certify the radio and antenna, or am I missing
something here?
Sam Tetherow
Sandhills Wireless
Charles Wu wrote:
>Cheap Taiwanese / Chinese / Foreign products also contain other "hidden
>costs" -- let's think conspiracy theories here =)
>
>There was a recent thread (on this list?) about Mikrotik RB532 boards
>spewing <1 Ghz OOB Noise when being powered w/ -48 VDC PoE (a faulty /
>cheap regulator -- wasn't following that closely) -- effectively taking
>down some ambulance communications service / etc
>
>What would happen when the DIY WISP deploys such a system -- and takes
>down some critical communications system, and on the extreme end,
>someone dies as a result of this -- then they investigate and you
>realize that you were inadvertently interfering w/ them by using an
uncertified system...
>
>-Charles
>
>
>-------------------------------------------
>CWLab
>Technology Architects
>http://www.cwlab.com
>
>
>
>-----Original Message-----
>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On
>Behalf Of [EMAIL PROTECTED]
>Sent: Wednesday, June 28, 2006 11:08 AM
>To: 'WISPA General List'
>Subject: RE: [WISPA] $100 CPE?
>
>
>I am sure Charles and some are you are thinking the same thing I am on
>the 400mW unit, something just does not add up when manufactures are
>doing the same power and the cost of the card is the more then the cost
>of the full unit! I have not see this exact board but I have see a
>RTl8186 design that looks just like this one that's 80mW-100mW where
>the software was changed to output 400mW. When you use a basic power
>meter the "AVERAGE" power was 400mW but this is a false positive. With
>this setup the true power output of the DSSS channel did not go up very
>much. What did go up was the side lobes (2nd to 5th!) where on channel
>6 it took up a full 70Mhz where is can only use 20Mhz! An basic average
>power meter looks at the full band when taking a power reading which is
>confusing if you do not have a SA to back up the info.
>
>Look at the spec what did no look right was the power output of the
>OFDM
>(13.5dBm) vs. the DSSS (26dBm). If they where using a PA is would amp
>both in DSSS and OFDM modes equally, which is why I think they are just
>changing the firmware to increase the power on DSSS only. Looking at
>all the RTL8186 designs I have seen over the past 24 months 13.5 OFDM
>is 18-20dBm DSSS not 400mW
>
>We will have to wait in see what the true case is, most of the WISP
>that have been in this for a year or so have some type of SA and can do
>a basic level test to see for themselves. We of course plan on getting
>one and doing our own level of testing using high end Agilent to test
>QAM, spectral mask, EVM etc and see what this unit truly is.
>
>Bottom line if this is a software patch and not designed to a true
>400mW its going to adversely effect WISP network in a major way.
>
>Sincerely, Tony Morella
>Demarc Technology Group, A Wireless Solution Provider
>Office: 207-667-7583 Fax: 207-433-1008 http://www.demarctech.com
>
>
>
>-----Original Message-----
>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On
>Behalf Of Charles Wu
>Sent: Wednesday, June 28, 2006 10:32 AM
>To: 'WISPA General List'
>Subject: RE: [WISPA] $100 CPE?
>
>And don't forget that it's WiFi vs. a proprietary engineered outdoor
>WISP protocol
>
>-Charles
>
>-------------------------------------------
>CWLab
>Technology Architects
>http://www.cwlab.com
>
>
>
>-----Original Message-----
>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On
>Behalf Of Travis Johnson
>Sent: Tuesday, June 27, 2006 11:23 PM
>To: WISPA General List
>Subject: Re: [WISPA] $100 CPE?
>
>
>That they are working on "developing" a new product that will have
>bugs, hardware issues, etc. for the first 6-12 months. Trying to get to
>$100 (without antenna, BTW).
>
>Trango has a $149 unit that is from a company that is established, it
>has a built in antenna, PoE, etc. and is ready to go today. For $30
>more, the range goes from 3 miles to 13 miles. ;)
>
>Travis
>Microserv
>
>Brian Rohrbacher wrote:
>
>
>
>>http://www.dslreports.com/forum/remark,15749577
>>
>>http://www.dslreports.com/forum/remark,16364972
>>
>>
>>
>>What does everyone think?
>>
>>
>>
>>
>>
>--
>
>
>
>
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