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# Conversion of EVM measured in db to % - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.

 Post subject: Conversion of EVM measured in db to % Posted: Wed Dec 26, 2007 3:21 am
 Captain

Joined: Sun Jun 26, 2005 11:47 pm
Posts: 5
Location: India
Hi
any body can help me on a direct formula for converting EVM measured in db to %

 Post subject: Posted: Thu Dec 27, 2007 12:59 pm

Joined: Sun Aug 03, 2003 2:02 pm
Posts: 476
Location: Erie, PA
 Greetings tyjose: Since EVM concerns voltage and not power, the conversion is simply 10^(EVM in dB/20) Multiply by 100 to get % Example: EVM = -15 dB = [100 * 10^(-15/20)] % = [100 * 0.17782] % = 17.8 % _________________- Kirt Blattenberger RF Cafe Progenitor & Webmaster

Posted  11/12/2012
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