Capacitors

[DonaldF F Christensen]

To minimumize drift in the Heath rx Model SW7800, it is suggested to
replace two
existing capacitors with negative temperature coefficient units. My
references show
an SL and NPO types. I assume the NPO is a neg. temp. cap but not sure.
What do
the letters SL and NPO stand for? Thanks in advance. 73 Don W8WOJ

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