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<blockquote data-quote="Art Welter" data-source="post: 107944" data-attributes="member: 52">Re: HyperboLine ™ new Player in the Old GameThe HF attenuation from the dry air in the high desert is specifically what drove my interest in a more efficient means of making HF travel further.Being was used to the Land of 10,000 Swamps, 50% humidity 85 degree weather outdoor shows were typical, with HF attenuation of 7.3 dB per 100 feet at 15 kHz (23.8 dB at 100 meters) in addition to the usual inverse distance losses.Reduce the humidity to 20% (&quot;a dry heat&quot; (^<img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f609.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=";)" title="Wink&nbsp; &nbsp; ;)"&nbsp; data-smilie="2"data-shortname=";)" />, and the attenuation nearly doubles, 14.4 dB per 100 feet, 47 dB at 100 meters- when I first started doing shows in New Mexico with different equipment than I was used to, I thought the gear was the problem, it was several years later that I found out it was the dry air that was killing the HF.Art</blockquote>

[QUOTE="Art Welter, post: 107944, member: 52"] Re: HyperboLine ™ new Player in the Old Game The HF attenuation from the dry air in the high desert is specifically what drove my interest in a more efficient means of making HF travel further. Being was used to the Land of 10,000 Swamps, 50% humidity 85 degree weather outdoor shows were typical, with HF attenuation of 7.3 dB per 100 feet at 15 kHz (23.8 dB at 100 meters) in addition to the usual inverse distance losses. Reduce the humidity to 20% ("a dry heat" (^;), and the attenuation nearly doubles, 14.4 dB per 100 feet, 47 dB at 100 meters- when I first started doing shows in New Mexico with different equipment than I was used to, I thought the gear was the problem, it was several years later that I found out it was the dry air that was killing the HF. Art [/QUOTE]

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