The manual of my RF signal generator says that I should use a 1-5 pf capacitor in line when checking RF an IF amplified circuits to prevent detuning effects. So this is applicable when I am injecting a signal into my radio to set the receive on a VU meter? I have looked at charts but get even more confused when trying to work out the values of said capacitor.. I have a pack of ceramic capacitors labeled 0.1 mfd I have another box of electrolytic capacitors that range from 0.1 uf and go up to 470uf. Will any of this work? Or are al of these way out of range? And if they do, and I can use one of the electrolytic types, those have a negative and positive side, which way should it be oriented? The negative side towards the generator?