[Boatanchors] Theory Question

[Jim Liles]

Good morning Keith,

The .01uf is adequate for 80, 40, meters and the .001 for 20, 15, and 10 
Metres.

The .01 cap becomes an inductor at around 18Mc depending on lead length. 
With 1/2 inch leads about 15Mc.

The .001 well above 10 Metres


Kindest regards Jim K9AXN


-----Original Message----- 
From: Keith Densmore
Sent: Wednesday, July 29, 2015 9:55 AM
To: boatanchors at mailman.qth.net
Subject: [Boatanchors] Theory Question

Have a question I know someone will know the answer to.
Very often in tube bypass capacitors, both b+ and cathode, two caps are 
used, a
lower value and a higher value, ie .01 and a .001.
What is the purpose of this, would not the .01 do the job alone? Never seen
this addressed.

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Thanks,
Keith ve3ts


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