<div>Brian - double check the frequency on those Orcatron units. IIRC those units used 28.5 kHz USB, same as OTS Channel 5.<br></div><div><br></div><div>Sean<br></div><div><br></div><div class="protonmail_signature_block protonmail_signature_block-empty"><div class="protonmail_signature_block-user protonmail_signature_block-empty"><br></div><div class="protonmail_signature_block-proton protonmail_signature_block-empty"><br></div></div><div><br></div><div>‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐<br></div><div> On Tuesday, November 10, 2020 12:29 PM, Brian Hughes via Personal_Submersibles <personal_submersibles@psubs.org> wrote:<br></div><div> <br></div><blockquote class="protonmail_quote" type="cite"><div style="color: rgb(33, 33, 33); background-color: rgb(255, 255, 255); text-align: left;" dir="auto">For the Psubs crowd the standard is 32.768 kHz, that's channel 1 or the "sport channel" on OTS systems. Ocean Reef uses the same frequency as did Soniwave before they went out of business. Nearly all of the Aquacom systems will have that one, except for the
military versions. All of my gear is discontinued, but it works well and was way cheaper than new.<br></div><div style="color: rgb(33, 33, 33); background-color: rgb(255, 255, 255); text-align: left;" dir="auto"><br></div><div style="color: rgb(33, 33, 33); background-color: rgb(255, 255, 255); text-align: left;" dir="auto">Helle and Scubaphone (Orcatron) use 27 kHz, at least that's the standard for them as I understand it. I have two Scubaphone surface units gathering dust as I was going to install them, but learned PSubs uses OTS channel 1. That way all our subs can talk to
each other. Cliff has the pinout designation on the PSubs site.<br></div><div style="color: rgb(33, 33, 33); background-color: rgb(255, 255, 255); text-align: left;" dir="auto"><br></div><div style="color: rgb(33, 33, 33); background-color: rgb(255, 255, 255); text-align: left;" dir="auto">Brian<br></div><div style="color: rgb(33, 33, 33); background-color: rgb(255, 255, 255); text-align: left;" dir="auto"><br></div><div style="color: rgb(33, 33, 33); background-color: rgb(255, 255, 255); text-align: left;" dir="auto"><br></div><div dir="auto" style="text-align: left;"><div><br></div><div>Get<a href="https://aka.ms/ghei36">Outlook for Android</a><br></div></div></blockquote><div><br></div>