This would be the direct successor to your unit:<br><br><a href="https://www.subsea-import.com/subphone-580---580tx.html">https://www.subsea-import.com/subphone-580---580tx.html</a><br><br>Sean<br><br><br><br><br>-------- Original Message --------<br>On Jan 10, 2019, 09:53, hank pronk via Personal_Submersibles < personal_submersibles@psubs.org> wrote:<blockquote class="protonmail_quote"><br><html><head></head><body><div class="ydp3bdc3423yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div></div>
<div>Sean,</div><div>I have a radio in the sub and a matching radio in the boat. Yes it is 9khz and probably very old school.</div><div>Hank</div><div><br></div>
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On Thursday, January 10, 2019, 8:32:42 AM MST, Sean T. Stevenson via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
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<div><div id="yiv8399011552"><div>A few questions:<br clear="none"><br clear="none">1) Who are you communicating with / what is the hardware on the receiving end?<br clear="none"><br clear="none">2) I presume you meant to type 9 kHz instead of 9 Hz? 9 Hz would be infrasonic and require an immense amount of power to transmit, in addition to not having sufficient bandwidth for voice comms. 9 kHz, on the other hand, still doesn't sound like a standard comms frequency. Human hearing covers 20 Hz - 20 kHz. 9 kHz would be audible, not ultrasonic. Active sonar transducer perhaps?<br clear="none"><br clear="none">Sean<br clear="none"><br clear="none"><br clear="none">-------- Original Message --------<br clear="none">On Jan 9, 2019, 18:01, hank pronk via Personal_Submersibles < personal_submersibles@psubs.org> wrote:<blockquote class="yiv8399011552protonmail_quote"><br clear="none"></blockquote></div><div class="yiv8399011552yqt1711844755" id="yiv8399011552yqt90669"><div><div class="yiv8399011552ydpe778c117yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div></div>
<div>Sean,</div><div>I have no clue what the wattage is. These are the original coms that came with Gamma, they are rack mount. The picture shows a spare 27 and the big one is a 10 hs but I need 9 hz</div><div>hank</div><div><br clear="none"></div>
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<div>----- Forwarded Message -----</div>
<div><b>From:</b> hank pronk <hanker_20032000@yahoo.ca></div><div><b>To:</b> hank pronk <hanker_20032000@yahoo.ca></div><div><b>Sent:</b> Wednesday, January 9, 2019, 5:58:41 PM MST</div><div><b>Subject:</b> </div><div><br clear="none"></div>
<div><div dir="ltr"><br clear="none"></div><div dir="ltr"><br clear="none"></div><br clear="none"><br clear="none">Sent from my iPhone</div>
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