[TowerTalk] Fair rite materials for choke baluns

[Grant Saviers]

Why would an RF choke ferrite core be "ruined" if saturated?  And if 
saturated, why can't it be demagnetized?

Wouldn't the modern rig envelope amplitude decay of a "dit" or of voice, 
tend to demagnetize the core out of saturation?  Since RF chokes aren't 
square loop ("hard") ferrites, wouldn't normal amplitudes tend also to 
return to lower remanent magnetization as minor loops are traversed?

OTOH, it would be interesting to add a DC current winding to a choke and 
run some experiments.  Why would the results would be any different than 
with a laminated metal core choke designed for a power supply?

However, from what little I know about ferrites, it is possible with 
overheating to irreversibly damage them.

Grant KZ1W