O cenário
A satellite installer inserts this passive detector in the LNB coax run to align the dish by peaking the IF signal level on an analog meter while adjusting the sensitivity control.
O que há neste desenho
Entenda as decisões por trás dele.
01
Use a 1N4148 RF detector diode with a 10 nF coupling capacitor to rectify the IF without loading the LNB line.
02
Use a 10 kΩ sensitivity resistor to scale the rectified DC into the 1 kΩ meter load for a visible deflection.
03
Represent the analog meter as a 1 kΩ load resistor for a clean two-terminal schematic symbol.
Reuse this netlist for any simple satellite finder or signal strength indicator where an analog meter and a single sensitivity control are required.