tag:blogger.com,1999:blog-35901825.post1295931649581261441..comments2024-03-19T06:03:40.451+10:00Comments on marxy's musing on technology: VK3HN's Si5351 VFO in a DC receiverPeter Markshttp://www.blogger.com/profile/13007012724570360389noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-35901825.post-87553351045632023902023-02-20T11:38:24.326+10:002023-02-20T11:38:24.326+10:00Perhaps with some fancy programming you could make...Perhaps with some fancy programming you could make a PTO simulator. Just dial up a pre-stored drift profile according to whatever takes your fancy at the time.<br /><br /><br />Cheers,<br />Steve VK2AAVFrederick Fredrickshttps://www.blogger.com/profile/08815378963009131582noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-33258527116494541012023-02-18T15:38:03.694+10:002023-02-18T15:38:03.694+10:00Peter and Bill,
I think I have the solution. Peter...Peter and Bill,<br />I think I have the solution. Peter should build *both* VFOs, a PTO and an si5351, and switch between them in his DC receiver. This will provide the ultimate choice -- between authenticity and soul, and clinical digital icy perfection. He can then choose one or the other, depending on his mood. Maybe the slow drift and analog fluidity of the PTO will get under his skin,Unknownhttps://www.blogger.com/profile/06999873048480149939noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-87116553871250186332023-02-18T10:18:56.610+10:002023-02-18T10:18:56.610+10:00Just kidding Peter! All in good fun. I really li...Just kidding Peter! All in good fun. I really like the looks of your PTO. <br /><br />Just today Dean KK4DAS and I worked with the high school kids and managed to get EIGHT of these things oscillating. The students are off to a good start and will soon have their receivers built. <br /><br />73 and regards to Paul VK3HN. Bill N2CQR Bill Mearahttps://www.blogger.com/profile/07662500663603350847noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-6491319014022430962023-02-18T05:27:59.673+10:002023-02-18T05:27:59.673+10:00Dear Bill,
I didn't mean any negativity! This...Dear Bill, <br />I didn't mean any negativity! This is all great fun and lots to learn.<br />Thank you for your inspiration and encouragement. I shall order some NP0 capacitors.<br />Best 73s.Peter Markshttps://www.blogger.com/profile/13007012724570360389noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-86482533097587073572023-02-17T20:14:17.787+10:002023-02-17T20:14:17.787+10:00Peter, Paul: Step back from your soldering irons...Peter, Paul: Step back from your soldering irons. Stop with the negative vibes. Don't give in to the siren calls of the Si5351. It is possible to make that BEAUTIFUL analog discrete PTO that Peter built stable. Even down under! See: https://soldersmoke.blogspot.com/2023/02/vk2blq-builds-high-school-direct.html <br /><br />Sure, it will behave like a Theremin if you wave your hand nearBill Mearahttps://www.blogger.com/profile/07662500663603350847noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-28731815309325873682023-02-17T12:42:00.265+10:002023-02-17T12:42:00.265+10:00Thanks for including the links Peter. This board ...Thanks for including the links Peter. This board was factory fabricated and populated at JLCPCB. Unfortunately they soldered in ATMega328 instead of 328P hence the need to set up a different board profile. When I do a Rev 2.0 I'll use a socket to avoid this problem and I have a bag on 328Ps anyway. Please note that there are various minor bugs on the board which I ironed out manually on theUnknownhttps://www.blogger.com/profile/06999873048480149939noreply@blogger.com