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<div>It just doesn't make sense to me? I thought the sound had to hit a more dense material than air to bounce back. it is great if it works- I will have to give it a try when the ice melts.</div><div>Hank</div><div><br></div>
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On Tuesday, February 5, 2019, 8:46:00 AM MST, Jon Wallace via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div id="yiv5509628618"><div><div style="color:#000;background-color:#fff;font-family:times new roman, new york, times, serif;font-size:16px;"><div><span>Pretty sure the beam reflects off the water surface.</span></div><div class="yiv5509628618qtdSeparateBR" id="yiv5509628618yui_3_16_0_ym19_1_1549334288735_25596"><br clear="none"><br clear="none"></div><div class="yiv5509628618yahoo_quoted" id="yiv5509628618yui_3_16_0_ym19_1_1549334288735_25600" style="display:block;"> <div id="yiv5509628618yui_3_16_0_ym19_1_1549334288735_25599" style="font-family:times new roman, new york, times, serif;font-size:16px;"> <div id="yiv5509628618yui_3_16_0_ym19_1_1549334288735_25598" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"> <div class="yiv5509628618yqt8761248782" id="yiv5509628618yqt30868"><div dir="ltr" id="yiv5509628618yui_3_16_0_ym19_1_1549334288735_25597"> <font id="yiv5509628618yui_3_16_0_ym19_1_1549334288735_25602" size="2" face="Arial"> </font><hr size="1"> <b><span style="font-weight:bold;">From:</span></b> hank pronk via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none"> <b><span style="font-weight:bold;">To:</span></b> Brian Hughes via Personal_Submersibles <personal_submersibles@psubs.org> <br clear="none"> <b><span style="font-weight:bold;">Sent:</span></b> Friday, February 1, 2019 10:54 AM<br clear="none"> <b><span style="font-weight:bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Blue Robotics Sonar<br clear="none"> </div> <div class="yiv5509628618y_msg_container" id="yiv5509628618yui_3_16_0_ym19_1_1549334288735_25604"><br clear="none"><div id="yiv5509628618"><div id="yiv5509628618yui_3_16_0_ym19_1_1549334288735_25608"><div class="yiv5509628618ydp7b7eb433yahoo-style-wrap" id="yiv5509628618yui_3_16_0_ym19_1_1549334288735_25607" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div></div>
<div id="yiv5509628618yui_3_16_0_ym19_1_1549334288735_25606">Brian, </div><div id="yiv5509628618yui_3_16_0_ym19_1_1549334288735_25610">Have you tested the Hummingbird pointing strait up? I didn't think that would work because there is nothing for it to bounce back against.</div><div id="yiv5509628618yui_3_16_0_ym19_1_1549334288735_25612">Hank</div><div id="yiv5509628618yui_3_16_0_ym19_1_1549334288735_25614"><br clear="none"></div>
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On Friday, February 1, 2019, 7:44:42 AM MST, Brian Hughes via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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In the original configuration of Harold, Maynard attached a transducer to the front of the starboard side thruster. I assume he did so as a way to easily shift direction, up to get depth bouncing off surface, spin the thruster down for depth, forward for collision
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Here's the upgrade:<br clear="none">
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1) transducer always pointed up for a Humminbird HDR 650. Basically a digital depth gauge. Small and accurate. Works well.<br clear="none">
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2) Raymarine Dragonfly 4 Pro aimed down to give depth below and detailed image of what's under me. Amazing little CHIRP sounder.<br clear="none">
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3) still debating on what to aim forward. Currently have an Interphase forward scanning sonar, but not real impressed with it. Older technology that works. Sort of.<br clear="none">
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Brian<br clear="none">
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Get <a rel="nofollow" shape="rect" target="_blank" href="https://aka.ms/ghei36">Outlook for Android</a></div>
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