[R-390] Technical Question somewhat related to R-390s

[Barry]

> Yes, Barry.
> 
> You've got the explanation exactly right. The function generator has a
> lowimpedance - probably 50 Ohms - maybe even less.
> 
> This kills the Q of whatever side of the transformer it's connected to.
> 
> To avoid this, connect a resistor (anywhere from 1k to 10k) in series
> withthe function (or signal) generator.
> 
> Of course, this will substantially reduce the input level to the scope.
> 
> Miles B. Anderson, K2CBY

It's funny.  I was writing the original email and it wasn't until I was almost finished with it when the "aha!" moment occurred to me and I wrote that last paragraph.

Thanks for the reply and confirming what I thought might be the problem.

73,
Barry - N4BUQ