<DIV style="font-family:Arial, sans-serif; font-size:10pt;"><FONT size="2" style=""><FONT face="Arial, sans-serif">What is interesting is that 28kHz is ultrasonic , so just above our hearing range. Was looking at devices that use this frequency, ultrasonic cleaning devices operate at around 28kHz. I'm exploring converting a 2 meter ham radio to operate at the 28kHz frequency possibly using existing transducers that are cheap and available. </FONT></FONT><DIV><FONT size="2" style=""><FONT face="Arial, sans-serif"><BR></FONT></FONT></DIV><DIV><FONT size="2" style=""><FONT face="Arial, sans-serif">Brian</FONT></FONT></DIV><DIV><FONT size="2" style=""><FONT face="Arial, sans-serif"><BR></FONT></FONT></DIV><DIV><FONT size="2" style=""><FONT face="Arial, sans-serif"> </FONT></FONT><BR><BR><SPAN style="font-family: Arial, sans-serif; font-size: 10pt;">--- personal_submersibles@psubs.org wrote:</SPAN><BR><BR><SPAN style="font-family: Arial, sans-serif; font-size: 10pt;">From: Alan via Personal_Submersibles <personal_submersibles@psubs.org></SPAN><BR><SPAN style="font-family: Arial, sans-serif; font-size: 10pt;">To: Personal Submersibles General Discussion <personal_submersibles@psubs.org></SPAN><BR><SPAN style="font-family: Arial, sans-serif; font-size: 10pt;">Subject: Re: [PSUBS-MAILIST] Adding an OTS surface unit inside sub</SPAN><BR><SPAN style="font-family: Arial, sans-serif; font-size: 10pt;">Date: Thu, 12 Nov 2020 21:26:18 +1300</SPAN><BR><BR><DIV style="font-family: Arial, sans-serif; font-size: 10pt;"></DIV><DIV style="font-family: Arial, sans-serif; font-size: 10pt;">Brian,</DIV><DIV style="font-family: Arial, sans-serif; font-size: 10pt;">might destroy them.</DIV><DIV style="font-family: Arial, sans-serif; font-size: 10pt;">I emailed them some time ago about increasing the power, but got no reply.</DIV><DIV style="font-family: Arial, sans-serif; font-size: 10pt;">Alan</DIV><DIV style="font-family: Arial, sans-serif; font-size: 10pt;"><BR>On 12/11/2020, at 5:19 AM, Brian Cox via Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>> wrote:<BR><BR></DIV><BLOCKQUOTE style="font-family: Arial, sans-serif; font-size: 10pt;"><DIV><DIV style="font-family:Arial, sans-serif; font-size:10pt;"><FONT size="2">What about uping the wattage on those things ? Would that help?</FONT><DIV><FONT size="2"><BR></FONT></DIV><DIV><FONT size="2">Brian</FONT></DIV><DIV><FONT size="2"><BR></FONT></DIV><DIV><FONT size="2"><BR></FONT><BR><SPAN style="font-size: 10pt;">--- <A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A> wrote:</SPAN><BR><BR><SPAN style="font-size: 10pt;">From: Steve McQueen via Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>></SPAN><BR><SPAN style="font-size: 10pt;">To: Personal Submersibles General Discussion <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>></SPAN><BR><SPAN style="font-size: 10pt;">Subject: Re: [PSUBS-MAILIST] Adding an OTS surface unit inside sub</SPAN><BR><SPAN style="font-size: 10pt;">Date: Wed, 11 Nov 2020 08:31:11 -0500</SPAN><BR><BR><DIV dir="ltr" style="font-size: 10pt;">Jon, regarding earbuds. I believe they have commercial (Motorola) wireless (Bluetooth) adapters available. However converting one to the OTS unit would be the challenge. Would be cool.<DIV><BR></DIV><DIV>Steve</DIV></DIV><BR><DIV style="font-size: 10pt;"><DIV dir="ltr">On Tue, Nov 10, 2020 at 9:00 PM Jon Wallace via Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>> wrote:<BR></DIV><BLOCKQUOTE style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><DIV><DIV style="font-family:"times new roman","new york",times,serif;font-size:16px"><DIV></DIV>
<DIV dir="ltr">Yeah, I don't know...I can only say that my personal experience is that the clarity of SSB-2010 with headset is superior to the STX-101 speaker. I think part of that reason is because the STX-101 has a plastic/cellophane cover over the speaker to protect it from water splashes which adds a layer of timber distortion on top of that already inherent with side band comms. Add the hollow echo you get from being surrounded by steel and I'm not sure how clear it's going to be. Time will tell. I'm using the STX inside the sub as well, but for different reasons. Planning on bringing a headset just in case, but not the heavy kind OTS issues with their gear. I wonder how earbuds would do.</DIV><DIV dir="ltr"><BR></DIV><DIV dir="ltr">Jon</DIV><DIV dir="ltr"><BR></DIV><DIV><BR></DIV>
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On Tuesday, November 10, 2020, 08:06:55 PM EST, Brian Hughes via Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>> wrote:
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Jon,</DIV>
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Switch has 8 channels and OTS 1 is actually channel 3 on the dial so that tells me the first two are something else - what I have no idea. My main attraction is not having to wear a headset.</DIV>
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Brian</DIV>
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<DIV style="text-align:left">Get <A href="https://aka.ms/ghei36">
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