Rich says:
> However, when R-sup fails on 15m, 20m, 40m or 80m,
>there is seemingly no way that enough fundamental potential could
be
>developed across L-sup to damage R-sup.
Not so sure about 15, though. However, this argument assumes that the
ambient temperature of the environment in which that resistor sits is low
enough that the resistor still has dissipation capability available
sufficient for the reduced dissipation in it resulting from the lower RF
voltage across it, on lower frequency bands. For example, if the dissipation
on 10 metres is say, 10 watts, then it will be 2.5 watts on 20. If the
resistor has to be derated because the ambient is 80 deg C, then even the
lower dissipation on the lower bands may well be enough to 'cook' it.
73
Peter G3RZP
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