Nady Systems 8W-1KU Owner's manual - page 21

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When using the BT-1KU bodypack for 

instrument use: Scratchy noises can 

sometimes occur when an electric 

guitar with dirty pots or connections 

is used with a wireless system. 

Therefore, the supplied capacitor 

provides first-order filtering of the RF 

signal from the cord into the guitar and 

eliminates virtually all scratchy noises. 

Should your equipment still produce 

scratchy noise, we suggest these 

steps to eliminate problems:

1) Make sure all guitar volume and tone 

pots are clean and all contacts are solid. 

This is very important.

2) Solder a 47pF capacitor across the pot to 

ground terminal of the guitar’s volume and 

tone pots to provide extra filtering.

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