actually, it often works to have multiple public radio stations whose signals overlap fundraising at the same time. As you yourself admitted, you tune to the HD stream to get away from the pitching. If you can't avoid it by switching to a non-fundraising feed (especially true for stations airing the NPR news magazines), then some folks might be more prompted to take it seriously and contribute to one of them. Seems to work from when I worked at stations that happened one year to all fundraise at the same time, but I can't guarantee everyone will improve in every market if their fundraising overlaps. But it's worth a try.
Only thing I can't understand is why anyone would fundraise in January, which has traditionally been the low economy month as people catch up after paying Christmas shopping bills, etc.