|[AMRadio] Parasitic Suppressors (or lack thereof) in the Olden Days|
ne1s at neandertech.com
Wed Apr 11 12:08:57 EDT 2007
Olden Days being pre-WWII, that is.
I've noticed most (if not all) if the PP-triode RF PAs of that period don't
show the use of any parasitic suppressors in the grid or plate leads. Also a
deck I have (exact vintage unknown) using PP triodes doesn't include them.
How did they get away with this?
I've never put power to the above-mentioned deck, but have another one where
I tried to follow the same practice (I just used copper strap for the plate
leads) and I appear to have an intermittent parasitic, so will be
incorporating some suppressors in the plate leads.
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