<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content=text/html;charset=utf-8 http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 10.00.9200.17606"></HEAD>
<BODY id=MailContainerBody
style="PADDING-TOP: 15px; PADDING-LEFT: 10px; PADDING-RIGHT: 10px" leftMargin=0
topMargin=0 CanvasTabStop="true" name="Compose message area">
<DIV><FONT color=#d5372d>Dear Scott,</FONT></DIV>
<DIV><FONT color=#d5372d></FONT> </DIV>
<DIV><FONT color=#d5372d>Thank you for the detailed answer. It looks like I will
have to add CODEC to my board.</FONT></DIV>
<DIV><FONT color=#d5372d></FONT> </DIV>
<DIV><FONT color=#d5372d>BTW, I have packed 4 receivers and one transmitter into
EP4CE22E22. Still have approx. 10% of the FPGA unused, it should be enough to
add CODEC support and some other features.</FONT></DIV>
<DIV style="FONT: 10pt Tahoma"><FONT color=#d5372d size=3
face=Arial></FONT><FONT color=#d5372d size=3 face=Arial></FONT><FONT
color=#d5372d size=3 face=Arial></FONT> </DIV>
<DIV style="FONT: 10pt Tahoma"><FONT color=#d5372d size=3
face=Arial>Best!</FONT></DIV>
<DIV style="FONT: 10pt Tahoma"><FONT color=#d5372d size=3
face=Arial>Oleg</FONT></DIV>
<DIV style="FONT: 10pt Tahoma"><FONT color=#d5372d size=3 face=Arial>73 de
UR3IQO</FONT></DIV>
<DIV style="FONT: 10pt Tahoma">
<DIV><BR></DIV>
<DIV style="BACKGROUND: #f5f5f5">
<DIV style="font-color: black"><B>From:</B> <A title=scott.traurig@gmail.com
href="mailto:scott.traurig@gmail.com">Scott Traurig</A> </DIV>
<DIV><B>Sent:</B> Sunday, April 21, 2019 2:57 PM</DIV>
<DIV><B>To:</B> <A title=olegskydan@gmail.com
href="mailto:olegskydan@gmail.com">Oleg Skydan</A> </DIV>
<DIV><B>Cc:</B> <A title=hpsdr@lists.openhpsdr.org
href="mailto:hpsdr@lists.openhpsdr.org">hpsdr</A> </DIV>
<DIV><B>Subject:</B> Re: [hpsdr] Thetis, CW and sidetone</DIV></DIV></DIV>
<DIV><BR></DIV>
<DIV dir=ltr>
<DIV>Short answer: no.</DIV>
<DIV><BR></DIV>
<DIV>Longer answer: fully virtualized CW is possible. You can attach a key or
paddle to a PC serial port and Thetis (and PowerSDR) will use it. And you
obviously can receive CW signals using speakers plugged into the PC instead of
the radio hardware. But the dev's never tackled the problem of locally generated
(Thetis or PoweSDR) sidetone. Initial efforts had far too much latency from key
to speakers and they abandoned it.</DIV>
<DIV><BR></DIV>
<DIV>Now that we are much smarter about latency in the radio, audio and
otherwise, local sidetone should be possible, but it is not on the dev's
priority list.</DIV>
<DIV><BR></DIV>
<DIV>Two possible solutions (neither of which I've tried, I'm not a CW
operator):</DIV>
<DIV><BR></DIV>
<DIV>1. Use the new QSK mode. Your sidetone is essentially your own signal from
off-the-air. Make sure to be using the Low Latency filters in Setup > DSP
> Options.</DIV>
<DIV>2. Go old school and attach a sidetone generator across your key or paddle,
or use a desktop keyer with built-in sidetone.</DIV>
<DIV><BR></DIV>
<DIV>73,</DIV>
<DIV><BR></DIV>
<DIV>Scott/w-u-2-o</DIV><BR>
<DIV class=gmail_quote>
<DIV class=gmail_attr dir=ltr>On Sun, Apr 21, 2019 at 1:21 AM Oleg Skydan <<A
href="mailto:olegskydan@gmail.com">olegskydan@gmail.com</A>> wrote:<BR></DIV>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid"><BR>Hi,
List!<BR><BR>Can Thetis generate CW sidetone locally on the computer (and send
it to the <BR>computer speakers via VAC)?<BR><BR>Thanks!<BR>Oleg<BR>73 de
UR3IQO <BR><BR></BLOCKQUOTE></DIV></DIV></BODY></HTML>