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I like the way you think - for now we're affecting the "Q" of the power choke - 9.1K and you're seeing something...

Ok, thanks for staying with me on this - for the ratio of R101 (original a 10K) and R138 (1K) - by L21 - are factors of 10. You just changed the Collector side...you are affecting the amplification but this will come at a price.

Another spot in an earlier message I talked to you about...

[ATTACH=full]23952[/ATTACH]

Swap R101 to a 15K to see if it "sharpens" that TP10 result. No guarantees. Just wondering if Current Starving it would help "smear" the waveform so PLL can see it. Again, we're going into 2MHz - usually this thing goes to about 1.8MHz "sample" bandwidth as its' upper limit.

And for tolerance issues, pull and measure R138 by L21 - you may need to install a fresh one here but ONLY after you measure - because the "window" and drive level are going to change with the fresh part. So you know, you are affecting an impedance level output - raising the ground resistor changes the P 2 P levels - but it comes at the price of Base Bias drive and linearity not just the waveforms power levels but voltage "Window" the thing works in.

Work slow, take it easy - nothing too fast - take your time.

:+> Andy <+:

<blockquote data-quote="Handy Andy" data-source="post: 628291" data-attributes="member: 52309">I like the way you think - for now we&#039;re affecting the &quot;Q&quot; of the power choke - 9.1K and you&#039;re seeing something...Ok, thanks for staying with me on this - for the ratio of R101 (original a 10K) and R138 (1K) - by L21 - are factors of 10. You just changed the Collector side...you are affecting the amplification but this will come at a price.Another spot in an earlier message I talked to you about...[ATTACH=full]23952[/ATTACH] Swap R101 to a 15K to see if it &quot;sharpens&quot; that TP10 result. No guarantees. Just wondering if Current Starving it would help &quot;smear&quot; the waveform so PLL can see it. Again, we&#039;re going into 2MHz - usually this thing goes to about 1.8MHz &quot;sample&quot; bandwidth as its&#039; upper limit.And for tolerance issues, pull and measure R138 by L21 - you may need to install a fresh one here but ONLY after you measure - because the &quot;window&quot; and drive level are going to change with the fresh part. So you know, you are affecting an impedance level output - raising the ground resistor changes the P 2 P levels - but it comes at the price of Base Bias drive and linearity not just the waveforms power levels but voltage &quot;Window&quot; the thing works in.Work slow, take it easy - nothing too fast - take your time.:+&gt; Andy &lt;+:</blockquote>

[QUOTE="Handy Andy, post: 628291, member: 52309"] I like the way you think - for now we're affecting the "Q" of the power choke - 9.1K and you're seeing something... Ok, thanks for staying with me on this - for the ratio of R101 (original a 10K) and R138 (1K) - by L21 - are factors of 10. You just changed the Collector side...you are affecting the amplification but this will come at a price. Another spot in an earlier message I talked to you about... [ATTACH=full]23952[/ATTACH] Swap R101 to a 15K to see if it "sharpens" that TP10 result. No guarantees. Just wondering if Current Starving it would help "smear" the waveform so PLL can see it. Again, we're going into 2MHz - usually this thing goes to about 1.8MHz "sample" bandwidth as its' upper limit. And for tolerance issues, pull and measure R138 by L21 - you may need to install a fresh one here but ONLY after you measure - because the "window" and drive level are going to change with the fresh part. So you know, you are affecting an impedance level output - raising the ground resistor changes the P 2 P levels - but it comes at the price of Base Bias drive and linearity not just the waveforms power levels but voltage "Window" the thing works in. Work slow, take it easy - nothing too fast - take your time. :+> Andy <+: [/QUOTE]

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