What's the best way for angry listeners to prevent CBC from acquiring bigger audience access in BC via FM?

I doubt you will prevent it but you can try as each application for changes in broad casted mediums, bands etc must be approved by the CRTC. The complaint or lack of support is waged against the CBC through the CRTC not CBC directly. The CBC would just ignore you but if enough people were to complain to the CRTC about the changes then the CRTC might actually consider it, but again I doubt it. 100 people wouldn't make open a book but 1000 might. A direct complaint about the broadcast standards of the early edition should be sent to the station manager not CBC br as again they will just ignore you. Years and years ago I sent a complaint to the CBC head office as in Alberta, at 3:00 pm just after the afternoon kids shows a very adult show with that blonde Jonathan guy came on. The show should have been on much later in my opinion as the content was very adult, ual and crude content. I got the signatures of over 1400 mothers in the town we lived in who agreed with me and sent to CBC head office. Got a letter back saying too bad, so sad. Sent the same petition to the CRTC, who reviewed the show and time that it was on in western Canada and they made the CBC Calgary (where the broadcast came from) change the programming. We were pleased.