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home:special:emf:measure:meters [10.26.2018] – [alternative indicator] sallieqhome:special:emf:measure:meters [09.14.2022] (current) – external edit 127.0.0.1
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 Usually you can recognize them by their bulky/boxy shape. Some of these are made of a good enough quality that they don't produce excess "E-smog". Many of them are very poorly made and some of them appear to be of concern..  Usually you can recognize them by their bulky/boxy shape. Some of these are made of a good enough quality that they don't produce excess "E-smog". Many of them are very poorly made and some of them appear to be of concern.. 
 +
 +==== The spectrum ====
 +
 +{{:home:lifestyle:light:enc_brit_spectrum1.jpg?400|spectrum}}
 +
 +Frequencies and wavelengths
 +{{:home:lifestyle:light:enc_brit_spectrum2.jpg?400|}}
  
  
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 There is a nice user-supported project, however, the "RF-Explorer" device, and associated software. For those of you who are technically inclined, preferably with a radio background, this device seems to do just about all one could want in a portable Spectrum Analyzer (15MHz to 2.7GHz). There is a nice user-supported project, however, the "RF-Explorer" device, and associated software. For those of you who are technically inclined, preferably with a radio background, this device seems to do just about all one could want in a portable Spectrum Analyzer (15MHz to 2.7GHz).
  
-The designer's website is at: [[http://goo.gl/ltyJp|RF designer's website]]+The designer's website is at: [[https://goo.gl/ltyJp|RF designer's website]]
  
 I have used it to look at radiation from my neighbors' DECT phones, (I was so horrified by our own that I immediately replaced it with wired phones), to look at the Smart-meter network in a little more detail, and generally to make sure there are no unexpected sources of radiation around (like the ROKU). I have used it to look at radiation from my neighbors' DECT phones, (I was so horrified by our own that I immediately replaced it with wired phones), to look at the Smart-meter network in a little more detail, and generally to make sure there are no unexpected sources of radiation around (like the ROKU).
  
-Here is a link to a convenient supplier: [[http://www.amazon.com/gp/product/B00GM72CGU|supplier]]+Here is a link to a convenient supplier: [[https://www.amazon.com/gp/product/B00GM72CGU|supplier]]
  
 It is relatively expensive because it is pretty sophisticated. Note that I am not suggesting this is worth every member rushing out and buying, but if you know you want a spectrum analyzer, I have given this one a through checking-out, and you won't find anything much better at anywhere near the price. It is relatively expensive because it is pretty sophisticated. Note that I am not suggesting this is worth every member rushing out and buying, but if you know you want a spectrum analyzer, I have given this one a through checking-out, and you won't find anything much better at anywhere near the price.
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 The new SDR (Software Defines Radios) are an inexpensive way to look at a range of frequencies. You can buy a dongle, and an assortment of antennas,  for just a few dollars which connects to a computer (Windows, Mac Linux and Android) and allows you to tune from the bottom of the AM broadcast band (500KHz) to 1.8GHz. This takes you through the smart meter and 4G regions and well beyond the FM and TETRA radio sources. It does not reach WiFi at 2.45GHz, however, or the higher UMTS and 2G / 3G regions around 2Ghz. The new SDR (Software Defines Radios) are an inexpensive way to look at a range of frequencies. You can buy a dongle, and an assortment of antennas,  for just a few dollars which connects to a computer (Windows, Mac Linux and Android) and allows you to tune from the bottom of the AM broadcast band (500KHz) to 1.8GHz. This takes you through the smart meter and 4G regions and well beyond the FM and TETRA radio sources. It does not reach WiFi at 2.45GHz, however, or the higher UMTS and 2G / 3G regions around 2Ghz.
  
-In the lab I also have a KiwiSDR, and it covers lower frequencies from 4KHz to 30MHz. You can access these free of charge  from all around the world from the list at http://SDR.hu+In the lab I also have a KiwiSDR, and it covers lower frequencies from 4KHz to 30MHz. You can access these free of charge  from all around the world from the list at https://SDR.hu
  
 I see little to no advantage with upgrading to the new Cornets. If you have one measuring to -65dBm, it will seve you well for a specific type of peak, quick-and-dirty measurement. I see little to no advantage with upgrading to the new Cornets. If you have one measuring to -65dBm, it will seve you well for a specific type of peak, quick-and-dirty measurement.
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 </blockquote>  </blockquote> 
  
-{{tag>EMF Lifestyle_modifications meter incomplete}}+===== Update ===== 
 + 
 +<blockquote>I would avoid the ED85EXplus as it doesn't have any audio capability. Stay with the ED85EXS, Cornet's website still shows it as a current model. 
 + 
 +Antenna recommendations have not changed since I made them earlier . The SRH789 covers all the bands, you need the SMA Male version, not the one 'compatible with Baofeng'. 
 + 
 +I suggest not purchasing an RFexplorer until you have grasped all the things there is to learn with the Cornet ED85EXS and the Kaito. 
 + 
 +//Prof. Marshall Jan. 2019//</blockquote> 
 + 
 +<blockquote>I see there is a new omni-directional antenna available for microwave frequencies: 
 +https://www.ebay.com/itm/700-MHz-26-GHz-Planar-Antenna-with-Connector-by-WA5VJB/254094003099 
 + 
 +You need ask for the "sma male" connector on it. 
 + 
 +Here is a directional antenna with connector for the 2G/3G/4G/WiFi frequencies, you will need a cable to connect it with your Cornet. You might write WA5VJB (the seller) to see if he has a similar version with a connector and cable on it.. 
 +https://www.ebay.com/itm/850-6500-MHz-Log-Periodic-Antenna-with-Connector-a-WA5VJB-Antenna/254076111369 
 + 
 +==== A Cornet ED85EXSa used to test mobile phone radiation ==== 
 + 
 + 
 +[[https://www.youtube.com/watch?v=sMWkde5FlK8&feature=youtu.be|Testing mobile phone radiation levels]] 
 + 
 +A short video made by Dmitry measuring his mobile phone radiation  
 + 
 +{{tag>EMF Lifestyle_modifications meter }} 
 +<nodisp>
 ===== Notes and comments ===== ===== Notes and comments =====
  
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 +</nodisp>
  
home/special/emf/measure/meters.txt · Last modified: 09.14.2022 by 127.0.0.1
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