diy IF transformers: first attempt.

[ppppenguin]

Good explanation but unfortuantely the probe tip capacitance doesn't directly scale with attenuation. This is mainly due to the capacitance of the probe cable. A x10 probe usually presents 8 to 10pF at the tip. x100 probes (which are quite rare and often expensive) can get down to 2pF or so. Active FET probes can go even lower but they are electrically fragile and horribly expensive.

The capacitance at the tip of a x1 probe is often about 100pF, again mainly due to the cable. For almost all purposes x1 (and switchable x1/x10) probes should be banned. Nasty things that will mislead those who don't understand.