Due to the rail frequency's being on 160-161.7 + you need a narrow deep notch filter. This is the type of filter I recommend. This is a single 'can' and you tune it to the interfering NOAA transmission. These may not be cheap new but many ham flea markets sell them as 2 meter duplexers. In a duplexer there may be 4 or 6 even 8 cans. You only need one. NOTE: Make sure its the right frequency range VHF(150-174) and not VHF 136-155 or worse UHF or 800Mhz. Some cans cover the full VHF band some do not. Do your R&D first.
I recommend that a proper service monitor be used to tune the cavity properly. I am mentioning this for those without access to a service shop or monitor. Tuning a single cavity is not hard and can be 'ball parked'. Connect the cavity to the scanner go to the NOAA frequency and adjust the plunger until NOAA gets noisy or weak.
The usual CYA rules apply. If you do not know what your doing or buying do not do it. This is highly general information. I make no promises, offers for support or anything else.
I recommend that a proper service monitor be used to tune the cavity properly. I am mentioning this for those without access to a service shop or monitor. Tuning a single cavity is not hard and can be 'ball parked'. Connect the cavity to the scanner go to the NOAA frequency and adjust the plunger until NOAA gets noisy or weak.
The usual CYA rules apply. If you do not know what your doing or buying do not do it. This is highly general information. I make no promises, offers for support or anything else.
