Well, I think the construction is important because the same trade
name was evidently used for multiple similar products. The web site is
not of good academic quality since it lacks dates and findable
citations. However, it does give some idea of the time line. I am
generally skeptical of statements made on hi-fi or electronic musical
instrument sites. The name "Bumble Bee" was never used by Sprague, of
anyone else, for a commercial product but seems to refer to the use of
RMA color coding stripes, something done on many capacitors.
I think that you, as am I, am interested in the particular caps that
failed so miserably in the Hammarlund receivers.
The web site I linked seems to suggest the author has a lot more
history than he is giving us. Maybe worth a search into the old trade
journals, which is, I suspect, where he got his information.
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On 4/30/2024 10:01 AM, Jim Whartenby via groups.io wrote:
Richard
I've found this site awhile ago.? No dates are shown for the ads or for
the data sheets.
My interest is in the time line, not the construction of the capacitor.
I've not seen Sprague capacitors earlier then the striped variation in
any radio that I have reworked.? ?I feel that Sprague was testing the
waters with the early ads as they developed the Black Beauty.? This is
just my opinion so I searched through the World Radio History site for
data to confirm this but I didn't find much.
Jim
Logic: Method used to arrive at the wrong conclusion, with confidence.
Murphy
--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998
