Sprague Hypass Items in a SB-220

[John C Adkins]

Thanks for all the replies.  Joseph Pinner, KC5IJD sent me this specific
information.

>>>>They are 0.1 600V feedthrough type bypass capacitors. 

>>>>Probably used to filter some lines




As I deconstruct the circuit in my modified SB-220, the bottom side of the
tube sockets have been shielded.  The feedthru caps are connected to the
green filament supplies to the tubes, and the bifilar choke has been moved
inside the shielding enclosure.  Another, smaller, feedthru cap was used to
bring in the bias supply.

Apparently the previous owner had some kind of interference problem, so he
did this shielding.

73

John
w4kv

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