<div dir="ltr">I believe that's Bill Brown's WB8ELK's software <a href="https://gmigliarini.wixsite.com/wb8elksoftware">https://gmigliarini.wixsite.com/wb8elksoftware</a><br><br>There are competing designs for WSPR Type 3 messages. I have been holding off experimenting with that to see who wins. The second (Type 3) message depends on the successful decode of the first message if I understand correctly. <br><br><div>Martin<br><br><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, May 26, 2021 at 8:46 PM Jacek Radzikowski <<a href="mailto:jacek.radzikowski@gmail.com">jacek.radzikowski@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif">W5KUB did an interesting hack to WSPR to send much more data in the frame. In 2 frames they can send 6-character grid square and a bunch of telemetry data <a href="https://youtu.be/KluPoJsOcm4?t=1903" target="_blank">https://youtu.be/KluPoJsOcm4?t=1903</a></div><div class="gmail_default" style="font-family:tahoma,sans-serif"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">Jacek</div><div class="gmail_default" style="font-family:tahoma,sans-serif">kw4ep</div><div class="gmail_default" style="font-family:tahoma,sans-serif"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, May 26, 2021 at 11:37 PM Martin <<a href="mailto:dcmk1mr2@gmail.com" target="_blank">dcmk1mr2@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">I have caught the pico balloon craze and have started building my own trackers. I'm new to RF PCB making and have made several PCB versions that worked well. I recently started running into GPS noise problems that seem to emanate from the Si5351A chip used to generate the 20 m, 10 mW WSPR signal. <div><br></div><div>I have tried via stitching on a two layer board with plenty of decoupling caps with no joy. <br><br>Could anyone help?<br><br>I do have GPS working good enough to fly. Here is my best result so far on 2 - $2 party balloons. WSPR only sends 4 characters of maidenhead grid square to only coarse position reports for now. We're working on it.<br><img src="cid:ii_kp6c9mmq0" alt="image.png" width="526" height="255"><br></div><div><br></div><div> </div><div>73 Martin W6MRR</div></div>
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</blockquote></div><br clear="all"><br>-- <br><div dir="ltr">Given a choice between two theories, take the one which is funnier </div>
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