Steve wrote:
Someone over at Free Radio Network posted the following today:

"6900USB 2308-2322 SIO444 hearing this again. Data burst, then Yosemite
Sam making funny noise and "take me to the Casbah". no code this time.
repeated 7 times and off. Then on again after 3 mintues with same
routine."

Could this be the Return of Sam?

Sure enough...I just heard it. Here's about 20 seconds of audio:

http://renopithicus.tripod.com/yosemitesam.wav