>
>Jon wrote:
>
>> > . Unless you specifically know what
>> >their state was prior to the "bang" then you cannot comment on what
>> >caused their state after the "bang."
>> >
>> >The resistors could have been bad already from heating effects, age, etc.
>
>Rich replied:
>
>> Surely, Jon. 10m FM and RTTY often leave bubbles on the surface of
>> R-supp, however, with VHF parasite damage, the surface typically looks
>> shiny new and the resistance may increase 3x to 4x. > later, Jon
>
>Please Rich, enlighten me on how the shiny surface means it was
>a parasitic, and the bubbled surface means it was HF heating.
I did not say that a shiny surface means it was a parasitic oscillation.
A shiny surface indicates that the outside of the resistor did not get
hot. A bubbled surface indicates that the outside of the resistor was
hot for an extended period. A >3x increase in R indicates that the
insides were severely damaged Add a shiny case, and the >3x change
suggest that the change probably happened quickly. . .
My guess is that big bang oscillations last perhaps a few milliseconds
>
>I'm sure you have a good explanation for that one!
>'
cheers, Tom
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