You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
The Feb 2025 Radioddity Giveaway Results are In! Click Here to see who won!

Reply to thread

Message

At 1:49 in your latest vid - did you notice the "offset" voltage change on the scope screen - you had to re-center the wave. What are the details of this - did you have to go back and adjust - why? Was it a centering error or did I just see a bias "glitch".

Go back to the 0:38 second mark of the vid for your 27.965 read, AM mode - I see your wavform out of lock - but I also see a "sag" motion with this. Not quite sure how to interpret it, but I still think you have a voltage "sag" issue in and around the two modes of AM and USB - as if there is a "Fault" caused by poor contacts.

Ok, the one area you had the "offset" power issues is fed directly by the 8 volt constant from the MB3756.

The Coils associated with the tripler L21 output - are off of the S403 switch all tied into that area.

Again, a power supply difference...

I'll review more - right now I've got some chores to do...
:+> Andy <+:

<blockquote data-quote="Handy Andy" data-source="post: 628292" data-attributes="member: 52309">At 1:49&nbsp; in your latest vid - did you notice the &quot;offset&quot; voltage change on the scope screen - you had to re-center the wave. What are the details of this - did you have to go back and adjust - why? Was it a centering error or did I just see a bias &quot;glitch&quot;.Go back to the 0:38 second mark of the vid for your 27.965 read, AM mode - I see your wavform out of lock - but I also see a &quot;sag&quot; motion with this. Not quite sure how to interpret it, but I still think you have a voltage &quot;sag&quot; issue in and around the two modes of AM and USB - as if there is a &quot;Fault&quot; caused by poor contacts.Ok, the one area you had the &quot;offset&quot; power issues is fed directly by the 8 volt constant from the MB3756.The Coils associated with the tripler L21 output - are off of the S403 switch all tied into that area.Again, a power supply difference...I&#039;ll review more - right now I&#039;ve got some chores to do...:+&gt; Andy &lt;+:</blockquote>

[QUOTE="Handy Andy, post: 628292, member: 52309"] At 1:49 in your latest vid - did you notice the "offset" voltage change on the scope screen - you had to re-center the wave. What are the details of this - did you have to go back and adjust - why? Was it a centering error or did I just see a bias "glitch". Go back to the 0:38 second mark of the vid for your 27.965 read, AM mode - I see your wavform out of lock - but I also see a "sag" motion with this. Not quite sure how to interpret it, but I still think you have a voltage "sag" issue in and around the two modes of AM and USB - as if there is a "Fault" caused by poor contacts. Ok, the one area you had the "offset" power issues is fed directly by the 8 volt constant from the MB3756. The Coils associated with the tripler L21 output - are off of the S403 switch all tied into that area. Again, a power supply difference... I'll review more - right now I've got some chores to do... :+> Andy <+: [/QUOTE]

Top Bottom