Re: ICOM SSB and ADSP filter kit?
They work well, but I haven't seen the need for one. I too get a lot of noise from the refigerator, freezer and the inverter/charger system. I just shut off the sources while on the radio and the noise level drops down. You would also need to take a look at the solar, as the controllers also can generate a lot of interference. And also keep in mind that the noise level in your marina is going to be high from all the other sources around you, as well as all the masts on the other boats.
You can always give me a call for a signal report, as I'm just up the coast in San Pedro.