I found this post from 2008. Interesting and somewhat accurate perception but I credit SXM for finding a way. 40's Junction was already on when i got home a little after midnight. It took about 45 minutes before i heard the first channel id. My radio automatically switched from the old channel to the new channel but i hope all the listeners got the message about the new channel. They certainly announced it every 15 minutes on 40's on 4 for the last week.Cross your fingers... hope it stays!
I wish there was a way to send a "thumbs up" to Sirius about the '40's channel. One of the reasons I signed on 4 years ago was because of the original Swing channel. They've tossed it around, renamed it, deleted it and generally treated it like dirt. I don't trust that it'll be around for a long time if it's buried amongst the Rock channels - (1-20) rather than up in the Jazz/Swing channels (70's). There's little mention of it on their website.
My guess is that they'll wait until they really need channel 4 for a new rock genre and then blow off "40's on 4". I hope I'm wrong.
I also hope that they can weather the financial storms. Sirius is the best money I spend even though I listen to every other form of media from AM to CD's to internet radio.
I wish them huge success and more channel space for "old" radio.