Signal amplification

[hahs2002]

greeting ,,

could you advice why the image have Signal amplification more than 0.5DB in every frequency

EX

frequency x read through finder 15.8 db but in receiver reading 16.4

could you please fix this issue

 

[el bandido]

What is the make and model number of your signal finder? OR what finder are you using that shows 15.8 db?

What is the make and model number of your receiver?