How to measure EIRP in Wireless Service Providers http://www.dslreports.com/forum/r20433090 en Fri, 09 Jan 2009 02:48:38 EDT Fri, 09 Jan 2009 02:48:38 EDT Re: How to measure EIRP http://www.dslreports.com/forum/remark,20444112 rfnut : I thought they were out of business. Last time I walked uptown, I could of swore the sign was gone off the building. Maybe the last storm got it.]]> http://www.dslreports.com/forum/remark,20444112 Wed, 07 May 2008 06:46:53 EDT Re: How to measure EIRP http://www.dslreports.com/forum/remark,20440266 EMC_guy : Anyone wishing to measure 802.11a/g TX power please read this post and follow the Praxsym and Anritsu links:
»Re: Gain of mini pci card in dBm

Praxsym is not suitable for accurate OFDM power measurement. You can buy an used professional quality RF power meter (Anritsu, Agilent, Keithly, etc) for much less. These are sold off by test labs all the time as they acquire better units.]]> http://www.dslreports.com/forum/remark,20440266 Tue, 06 May 2008 14:22:10 EDT Re: How to measure EIRP http://www.dslreports.com/forum/remark,20435950 viperm : We use this unit all the time. Best bang for the buck!!!

said by John Galt See Profile :

In-line...

»www.praxsym.com/t-meter.html
]]> http://www.dslreports.com/forum/remark,20435950 Mon, 05 May 2008 17:57:06 EDT Re: How to measure EIRP http://www.dslreports.com/forum/remark,20434785 LLigetfa : For comparisons, you could do side-by-side tests with a known value and compare the RSSI at both ends. If you are looking for test results that come with a get-out-of-jail-free card, it would take expensive gear.
--
Strange as it seems, no amount of learning can cure stupidity, and formal education positively fortifies it. -- Stephen Vizinczey]]> http://www.dslreports.com/forum/remark,20434785 Mon, 05 May 2008 14:14:11 EDT Re: How to measure EIRP http://www.dslreports.com/forum/remark,20434743 EMC_guy :
said by Equis See Profile :

I would like to know exactly how much power output some of my links are.
You could do this at any open-air test site (OATS) for a nominal fee.

Otherwise for in-situ EIRP measurements, you use a calibrated log-periodic antenna hooked up to a power meter and located in the far field along the main lobe. For 2.4Ghz, measure minimum 10 meters away. Even then you may need a claibrated attenuator to lower power level to the acceptable range of the meter.]]> http://www.dslreports.com/forum/remark,20434743 Mon, 05 May 2008 14:07:01 EDT Re: How to measure EIRP http://www.dslreports.com/forum/remark,20433943 John Galt : In-line...

»www.praxsym.com/t-meter.html
--
A is A]]> http://www.dslreports.com/forum/remark,20433943 Mon, 05 May 2008 11:27:19 EDT Re: How to measure EIRP http://www.dslreports.com/forum/remark,20433768 AMD Phreak : You'd use an RF watt meter at the antenna port on the radio and take a measurement there, and then add the antenna gain from the manufacturer minus off connecting losses. You could take it one step further and make your measurement at the coax cable before it connects to the antenna.]]> http://www.dslreports.com/forum/remark,20433768 Mon, 05 May 2008 10:51:58 EDT How to measure EIRP http://www.dslreports.com/forum/remark,20433090 Equis : Hello

I would like to know exactly how much power output some of my links are.

Some I need to squeeze every db I can get.

Can I trust what the manufacture says the card will do?

Is there a gadget to measure whats at the tip of the antenna?

Thanks :-)]]> http://www.dslreports.com/forum/remark,20433090 Mon, 05 May 2008 06:23:38 EDT