Alantina can be made from any of the Ashe mailbox obesity or a pack of Bouët old but must have a length greater than the diameter of the box
1 - Measure the diameter of any inch box Balanc
2 - let's measure the diameter of the can by a ruler lawn Balanc
3 - put that measurement in the calculator found on the following link
4 - find the distance that should be Nthagb then check the box Bdqpvi 1 / 4 Guide Wavelength (http://www.turnpoint.net/wireless/cantennahowto.html)
5 - Nakecr the wire and be a visible part of the wire only 31 mM of copper procedure
6 - so you get the signal transmission or reception distance of one kilometer is very strong
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