[Elecraft] [K3] KXV3A fails 1 mW calibration

[Don Wilhelm]

Even if the scope has a 1 Mohm input, it has considerable capacitance, 
so yes, you need a 10X probe.
is needed to display the proper amplitude of an RF voltage.

73,
Don W3FPR

On 2/12/2012 1:52 PM, Pierfrancesco Caci wrote:
> Thanks for this info. Now, please pardon my total ignorance in using
> these instrument. If the scope has an input impedance of 1 Mohm, do I
> still need to use the probe, or can I just use the BNC T ? I have the 50
> ohm dummy on the other side of the T of course.
> With the scope directly connected, I read slightly over 600 mV peak to
> peak. Should be almost there, right?
>
> Pf
>