[Boatanchors] Bird Termaline Question - Update (long)

[Jacques Fortin]

Hi Doug,
It was my first thought that the resistor inside was overheated, but it can
be something else..
What if it is the cooling oil slowly dissolving the carbon layer of the
resistor ?
Could it be a moisture contamination of the oil giving that result ?
If ever you dismantle everything and extract the resistor, it should measure
the same 72.6 ohms you got.
The other proof that the resistor is damaged, in your case, is that you got
a capacitive component of the impedance at most frequencies: it should not
be any reactance showing up to the GHz range.
I have a 6156 Thermaline that measures 51.8 ohms, and I believe it is still
good, but in the future, who knows ?

73, Jacques, VE2JFE