<story><title>ADSL works over wet string (2017)</title><url>https://www.revk.uk/2017/12/its-official-adsl-works-over-wet-string.html</url></story><parent_chain><item><author>giardini</author><text>ADSL, being essentially a form of alternating current, will pass through an air gap. I was enlightened on this by an AT&amp;amp;T tech who pointed out that one of my ADSL lines had several breaks and could not carry DC but the ADSL signal still came through. The other line was dead so I was running essentially on one wire with an earth ground. Here is an interesting discussion:&lt;p&gt;&amp;quot;Phone line with 1 broken wire still gets ADSL2&amp;quot;&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;forums.whirlpool.net.au&amp;#x2F;archive&amp;#x2F;9yzp5wr3&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;forums.whirlpool.net.au&amp;#x2F;archive&amp;#x2F;9yzp5wr3&lt;/a&gt;&lt;p&gt;Anyway, my hat is off to the people who designed and implemented ADSL.</text></item></parent_chain><comment><author>DaiPlusPlus</author><text>&amp;gt; Anyway, my hat is off to the people who designed and implemented ADSL.&lt;p&gt;It&amp;#x27;s a blessing-and-a-curse: too many incumbent ISPs in highly-developed nations used ADSL&amp;#x27;s ability to run on anything as an excuse to put-off FTTH deployments (looking at you, BT).</text></comment>
<story><title>ADSL works over wet string (2017)</title><url>https://www.revk.uk/2017/12/its-official-adsl-works-over-wet-string.html</url></story><parent_chain><item><author>giardini</author><text>ADSL, being essentially a form of alternating current, will pass through an air gap. I was enlightened on this by an AT&amp;amp;T tech who pointed out that one of my ADSL lines had several breaks and could not carry DC but the ADSL signal still came through. The other line was dead so I was running essentially on one wire with an earth ground. Here is an interesting discussion:&lt;p&gt;&amp;quot;Phone line with 1 broken wire still gets ADSL2&amp;quot;&lt;p&gt;&lt;a href=&quot;https:&amp;#x2F;&amp;#x2F;forums.whirlpool.net.au&amp;#x2F;archive&amp;#x2F;9yzp5wr3&quot; rel=&quot;nofollow&quot;&gt;https:&amp;#x2F;&amp;#x2F;forums.whirlpool.net.au&amp;#x2F;archive&amp;#x2F;9yzp5wr3&lt;/a&gt;&lt;p&gt;Anyway, my hat is off to the people who designed and implemented ADSL.</text></item></parent_chain><comment><author>geofft</author><text>In some sense, that&amp;#x27;s &amp;quot;just&amp;quot; radio. An antenna is a wire... it&amp;#x27;s sending a signal and picking it up from a very nearby antenna. Radio transmissions are all AC.&lt;p&gt;(Arguably, the real insight here is that the very existence of radio is impressive &amp;#x2F; unintuitive.)</text></comment>