Spokane PD/SO

Not sure if this is the proper place to post this question but here goes. I have a BCD436HP and have only done programming by entering zip code. I just updated the data base. It seems any of the agencies using digital, Spokane PD, SO and WSP, as an example the transmissions generally sound like they are underwater and very "choppy"; miss lots of what is said. What am I missing? Hoping someone else in Spokane has the same scanner and can share their experience and give advise?

Thanks for any info

Chris.