https://kd3ee.johnflinchbaugh.com/tags/fm/ Recent content in Fm on John Flinchbaugh KD3EE Hugo en Sat, 20 Dec 2025 00:00:00 +0000 https://kd3ee.johnflinchbaugh.com/post/2025-12-20-fm-am/ Sat, 20 Dec 2025 00:00:00 +0000 https://kd3ee.johnflinchbaugh.com/post/2025-12-20-fm-am/ <p>I found an <a href="https://www.youtube.com/watch?v=AzvxefRDT84">old training video about AM vs FM</a>. It explain grid voltage in tubes along the way.</p> https://kd3ee.johnflinchbaugh.com/post/2024-11-22-antenna-maintenance/ Fri, 22 Nov 2024 00:00:00 +0000 https://kd3ee.johnflinchbaugh.com/post/2024-11-22-antenna-maintenance/ <p>The home-brew yagi blows around in the wind a bit, so I brought it down this morning as it started to snow, so I could straighten and tighten the elements. I realigned it for the 985 repeater, and checked it to be giving -96dBm.</p> <p>I also resoldered some radials on the 1/4-wave ground plane antenna that go knocked loose in the tree.</p> <div class="gallery caption-position-bottom caption-effect-slide hover-effect-zoom hover-transition" itemscope itemtype="http://schema.org/ImageGallery"> <link rel="stylesheet" href="https://kd3ee.johnflinchbaugh.com/css/hugo-easy-gallery.css" /> <div class="box" > <figure itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject"> <div class="img" style="background-image: url('https://kd3ee.johnflinchbaugh.com//img/2024/2024-11-22-yagi-1.jpg');"> <img itemprop="thumbnail" src="https://kd3ee.johnflinchbaugh.com/img/2024/2024-11-22-yagi-1.jpg" alt="flag pole mast"/> </div> <a href="https://kd3ee.johnflinchbaugh.com/img/2024/2024-11-22-yagi-1.jpg" itemprop="contentUrl"></a> <figcaption> <p>flag pole mast</p> </figcaption> </figure> </div> <div class="box" > <figure itemprop="associatedMedia" itemscope itemtype="http://schema.org/ImageObject"> <div class="img" style="background-image: url('https://kd3ee.johnflinchbaugh.com//img/2024/2024-11-22-yagi-2.jpg');"> <img itemprop="thumbnail" src="https://kd3ee.johnflinchbaugh.com/img/2024/2024-11-22-yagi-2.jpg" alt="straightened yagi"/> </div> <a href="https://kd3ee.johnflinchbaugh.com/img/2024/2024-11-22-yagi-2.jpg" itemprop="contentUrl"></a> <figcaption> <p>straightened yagi</p> </figcaption> </figure> </div> </div>