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He worked on an expansion trick - sorry to see it didn't work.

Not sure of the kit used or what was done - but at least he found a failed cap that affects the detected audio - from the conversion process for SSB.

Just confused as to what was done to "expand" the channels - it appeared to work but something else wasn't right so until I know more - can't really say if it was a hijack or not...

But this goes back to another thread dealing with the "pump" charger on the 8719 that makes the PLL accelerate "frequency rises" or decelerate "frequency slows" and R95 a 1.5K that worked on one of the two inverters that are essentially designed to be free running "clockers" and between these two the radio determined if it had to go up in frequency (add a pulse "a charge - hence the term CHARGE PUMP" from internal clock - making the Varactor respond in one way) or slow down (Remove or sink some current from that loop) to make the Varactor respond the opposite. (from IC2) and with all the stuff going on I got confused too - one problem (here) then two and I had to sort it all out - whew...

Anyways...
When you remove the R95, you take away power from the clocks - those inverters - so when the PLL senses it needs to change the Varactors' response - that lack of power didn't help and puts the PLL in out of lock mode.

It needed two "clocks" running at a different speed so it can look to see if the one clock was off - which helped determine the way the PLL had to go to make the clocks "phase" in step again - by looking at not just that, it was off, but by phase detecting the status of the inverters - it can see if the loop was too fast or too slow and "step" accordingly.

Whew...again...
:+> Andy <+:

<blockquote data-quote="Handy Andy" data-source="post: 633973" data-attributes="member: 52309">He worked on an expansion trick - sorry to see it didn&#039;t work.Not sure of the kit used or what was done - but at least he found a failed cap that affects the detected audio - from the conversion process for SSB.Just confused as to what was done to &quot;expand&quot; the channels - it appeared to work but something else wasn&#039;t right so until I know more - can&#039;t really say if it was a hijack or not...But this goes back to another thread dealing with the &quot;pump&quot; charger on the 8719 that makes the PLL accelerate &quot;frequency rises&quot; or decelerate &quot;frequency slows&quot; and R95 a 1.5K that worked on one of the two inverters that are essentially designed to be free running &quot;clockers&quot; and between these two the radio determined if it had to go up in frequency (add a pulse &quot;a charge - hence the term CHARGE PUMP&quot; from internal clock - making the Varactor respond in one way) or slow down (Remove or sink some current from that loop) to make the Varactor respond the opposite. (from IC2) and with all the stuff going on I got confused too - one problem (here) then two and I had to sort it all out - whew...Anyways...When you remove the R95, you take away power from the clocks - those inverters - so when the PLL senses it needs to change the Varactors&#039; response - that lack of power didn&#039;t help and puts the PLL in out of lock mode.It needed two &quot;clocks&quot; running at a different speed so it can look to see if the one clock was off - which helped determine the way the PLL had to go to make the clocks &quot;phase&quot; in step again - by looking at not just that, it was off, but by phase detecting the status of the inverters - it can see if the loop was too fast or too slow and &quot;step&quot; accordingly.Whew...again...:+&gt; Andy &lt;+:</blockquote>

[QUOTE="Handy Andy, post: 633973, member: 52309"] He worked on an expansion trick - sorry to see it didn't work. Not sure of the kit used or what was done - but at least he found a failed cap that affects the detected audio - from the conversion process for SSB. Just confused as to what was done to "expand" the channels - it appeared to work but something else wasn't right so until I know more - can't really say if it was a hijack or not... But this goes back to another thread dealing with the "pump" charger on the 8719 that makes the PLL accelerate "frequency rises" or decelerate "frequency slows" and R95 a 1.5K that worked on one of the two inverters that are essentially designed to be free running "clockers" and between these two the radio determined if it had to go up in frequency (add a pulse "a charge - hence the term CHARGE PUMP" from internal clock - making the Varactor respond in one way) or slow down (Remove or sink some current from that loop) to make the Varactor respond the opposite. (from IC2) and with all the stuff going on I got confused too - one problem (here) then two and I had to sort it all out - whew... Anyways... When you remove the R95, you take away power from the clocks - those inverters - so when the PLL senses it needs to change the Varactors' response - that lack of power didn't help and puts the PLL in out of lock mode. It needed two "clocks" running at a different speed so it can look to see if the one clock was off - which helped determine the way the PLL had to go to make the clocks "phase" in step again - by looking at not just that, it was off, but by phase detecting the status of the inverters - it can see if the loop was too fast or too slow and "step" accordingly. Whew...again... :+> Andy <+: [/QUOTE]

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