Resistors?

[Penthode]

A silver fourth band is 10% and a gold fourth band is 5%. No fourth band is 20%.

Drifting resistors should not pose much of a problem. In most cases 50% will work just fine.

I wouldn't get hung up because a resistor is 10% off.

[Electronic M]

Originally Posted by Penthode

A silver fourth band is 10% and a gold fourth band is 5%. No fourth band is 20%.

Drifting resistors should not pose much of a problem. In most cases 50% will work just fine.

I wouldn't get hung up because a resistor is 10% off.

In radio yes, but in TVs 3% outside manufacturer tolerance spec may be the difference between linear on frequency sweep and the opposite of that, or the difference between the factory alignment being good enough and not.