I'm putting together a 2m Fox (for Fox Hunting), and I needed a 2m low-pass filter. I copied what was done here.
Measuring
-.69dB at 145MHz.
-3.7dB at 174.2MHz
Knocking down the spikes
Before:
25.2@145MHz
-13db@292MHz
12db@433
-9.8@586MHz
2.3db @733MHz
-7@879MHz
After:
25.2@145MHz
-20db@433MHz
-20db @733MHz
