You are droning on and on.
Can you perform the calculations I asked for above or are you just going to go on and on about changing transistors to fix a non-linearity problem that may not even exist?
Do you understand that these spurious signals may not even make it to the final stage to start with?
Let's try this again.
I saw a few "Fine Tune CB Shop" videos of Lincoln 2 radios or Stryker radios that are virtually identical
To generate a carrier at 28Mhz it takes 38.695Mhz and mixes 10.695Mhz to get there.
Now what "Fine Tune" seems to do frequently is set his span to what I assume is 30Mhz. If there was any leakage getting by we should see the 38Mhz signal but we won't see the 10.695Mhz because it's beyond 15Mhz to each side of center.
But we don't see the 38Mhz signal do we? It's gone. filtered. As it should be.
We don't see the ~49Mhz signal either, which is the sum of the 38 and 10Mhz signals.
That's off to the opposite side.
When he goes to look at the second harmoic @ ~54Mhz we still don't see the ~49Mhz signals.
That is because the system is operating properly, as designed!
If anything would be intermodulated it would be those signals along with the desired frequency. But they are not there.
Why is that?
If these signals are not present or at such small amplitudes to be in the thermal noise then there is no concern that it could be amplified now is there? All of the noise would be amplified along with them so why are we trying to prevent amplification of imaginary signals?
So please stop. It's nonsense. Show me where these mixing products are even getting past the bandpass filter to start with.
He posted his workbench in another thread.
I know you saw it.
And yes, he has the proper equipment to see it.
Don't act like a two year old because you are being asked to back up your assertions and that of "Fine Tune CB shop"
Some of us that actually know a thing or two can sniff out the inaccuracies, double talk, and projection.
Eating some popcorn hoping to learn something.
