User talk:103.206.105.186

April 2017
Hello, I'm Adamgerber80. I noticed that you made a change to an article, Global Positioning System, but you didn't provide a reliable source. It's been removed and archived in the page history for now, but if you'd like to include a citation and re-add it, please do so! If you need guidance on referencing, please see the referencing for beginners tutorial, or if you think I made a mistake, you can leave me a message on my talk page. Thank you. Adamgerber80 (talk) 07:05, 7 April 2017 (UTC)
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Please refrain from making unconstructive edits to Wikipedia, as you did at 20 (number). Your edits appear to constitute vandalism and have been reverted. If you would like to experiment, please use the sandbox. Repeated vandalism can result in the loss of editing privileges. Thank you. &#9790;Loriendrew&#9789;  &#9743;(ring-ring)  02:12, 8 April 2017 (UTC)
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July 2018
Please stop your disruptive editing. If you continue to vandalize Wikipedia, as you did at Dipole antenna, you may be blocked from editing.  Λυδ α  cιτγ  09:08, 18 July 2018 (UTC)
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