Here are some hints and tips for construction of a good preamp for satellite work.
It's main characteristics are :
To check (adjust) the bandstop filter, I used a wideband noise source and observed the results.(Click on any picture to zoom)
|The compact inline housing with BNC in/out - it is not waterproof. I have used to power the unit with a feedthrough capacitor instead of coax.|
The box conveniently opens by removing only one screw.
View on the PCB with SMD components (the BF998 is as well a SMD)
The input coil is mounted under the PCB.
The PREAMP is of wideband design. Please note that for certain
applications, a narrow band design would be more desirable. Be sure that
the preamp is not overloaded by nearby FM broadcast or utility
The actual performances: