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ATU's - often coveted, you would be forgiven for thinking they are perfect and even desirable devices given statements such as : "It'll match a bit of wet string" Losses ? Rarely ever spoken of. From what I can gleen it seems you lose around 1dB on an average expected match. Of course this is a gross over simplification which suits me, and seemingly everyone on here it seems given the lack of answers.

1dB is hard to find when it comes to single wire antenna design especially for much of HF given the sizes of an efficient antenna.

https://owenduffy.net/blog/?p=7035

https://www.ab4oj.com/atu/main.html

For multi band use of a wire I suppose it is a reasonable necessary loss. I would prefer to have 1dB gain myself. As that is a gain of 2dB over use of an ATU.

2dB is really hard to find in single bits of wire.

<blockquote data-quote="TheBlaster" data-source="post: 778710" data-attributes="member: 58745">ATU&#039;s - often coveted, you would be forgiven for thinking they are perfect and even desirable devices given statements such as&nbsp; : &quot;It&#039;ll match a bit of wet string&quot; Losses ? Rarely ever spoken of. From what I can gleen it seems you lose around 1dB on an average expected match. Of course this is a gross over simplification which suits me, and seemingly everyone on here it seems given the lack of answers.1dB is hard to find when it comes to single wire antenna design especially for much of HF given the sizes of an efficient antenna.<a href="https://owenduffy.net/blog/?p=7035" target="_blank">https://owenduffy.net/blog/?p=7035</a><a href="https://www.ab4oj.com/atu/main.html" target="_blank">https://www.ab4oj.com/atu/main.html</a>For multi band use of a wire I suppose it is a reasonable necessary loss. I would prefer to have 1dB gain myself. As that is a gain of 2dB over use of an ATU.2dB is really hard to find in single bits of wire.</blockquote>

[QUOTE="TheBlaster, post: 778710, member: 58745"] ATU's - often coveted, you would be forgiven for thinking they are perfect and even desirable devices given statements such as : "It'll match a bit of wet string" Losses ? Rarely ever spoken of. From what I can gleen it seems you lose around 1dB on an [I]average[/I] expected match. Of course this is a gross over simplification which suits me, and seemingly everyone on here it seems given the lack of answers. 1dB is [I]hard[/I] to find when it comes to single wire antenna design especially for much of HF given the sizes of an efficient antenna. [URL]https://owenduffy.net/blog/?p=7035[/URL] [URL]https://www.ab4oj.com/atu/main.html[/URL] For multi band use of a wire I suppose it is a reasonable necessary loss. I would prefer to have 1dB gain myself. As that is a gain of 2dB over use of an ATU. 2dB is [I]really[/I] hard to find in single bits of wire. [/QUOTE]

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