An old post says it was shown in the mid-1966 Canadian catalog for use with the SB-300. <div><a href="https://puck.nether.net/pipermail/heath/1998-November/031810.html">https://puck.nether.net/pipermail/heath/1998-November/031810.html</a><br><br>On Wednesday, May 11, 2016, <a href="mailto:wa7zze@gmail.com">wa7zze@gmail.com</a> <<a href="mailto:wa7zze@gmail.com">wa7zze@gmail.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Doug's comments prompted me to recall noting that the speaker in mine has a Canadian manufacturers name on it.<span></span><br>
</blockquote></div><br><br>-- <br><div dir="ltr"><div>Nick England K4NYW<br></div><a href="http://www.navy-radio.com" target="_blank">www.navy-radio.com</a><br></div><br>