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Ligne 69 : − === Les types de Core ===+ + + + + + + + + + + + + +
→Les types de Core
The transmission loss for the u.FL connector has been measured to be approximately 0.5 to 0.75dB.
The transmission loss for the u.FL connector has been measured to be approximately 0.5 to 0.75dB.
== Les types de Core ==
Currently the Core is available in two flavors. With an on-board chip antenna or an uFL connector to connect an external antenna.
Currently the Core is available in two flavors. With an on-board chip antenna or an uFL connector to connect an external antenna.
=== Avec antenne intégrée ===
This version of the Core comes with an on board chip antenna that gives a signal strength similar to a mobile phone. In most cases, a simple plastic enclosure will not affect the signal strength of the chip antenna.
{{SPARKImage|Spark.IO-Core-TechInfo-ChipAntenna.jpg|320px}}
=== Avec connecteur uFL ===
If you want to improve the signal strength of the Core, you can connect an external antenna with the help of the [http://en.wikipedia.org/wiki/Hirose_U.FL connecteur uFL (micro FL)] (''Wikipedia, anglais''). Most antennas that are designed to operate at 2.4GHz or are WiFi rated will do the job. You can also make your own [https://community.spark.io/t/extending-the-core-wifi-range-with-a-cantenna/1357 cantenna]!
{{SPARKImage|Spark.IO-Core-TechInfo-microFL.jpg|320px}}
Cantenna est une antenne à base d'une boite de conserve dont bon marché mais aussi avec une meilleure portée. En anglais, ce type de boite s’appelle ''can'' et une antenne ''antenna'' d'où le petit jeu de mot "Cantenna" ;-) )!
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