Hay Jim those are known as SUB Audible tones...When I worked for MUZAK every city had six SCULLY decks and a controller to run the music,,, It would switch from deck to deck so that the same music would never be played in the same sequence. All with sub audible tones. Was my job to change tapes one day a week and clean and replace heads when needed until Sat came in around 1981. Now even the SCA has gone away. I have one dealer that still uses SCA in Mo.
Bob W1PE -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jim Wilhite Sent: Monday, August 18, 2008 11:07 AM To: Discussion of AM Radio in the Amateur Service Subject: Re: [AMRadio] Automated Ole Buzzards? KOMA in Oklahoma City, a 50 KW R & R station used a Schaffer automation system in the 60s. All the music was on 10" tapes run on Ampex playback machines. The commercials were on carts like these and they used the Gates carousels. They were a maintenance headache for sure. When the engineer took down the main transmitter for maintenance he also had to do a lot of head and capstan cleaning. They used a non audible tone to control everything and sometimes there would be a musical note that would last long enough to fire the next sequence leading to two sound tracks at the same time. Even today with the compute control, I hear that happen. It was mesmerizing to watch that thing in action. Two complete systems, one for operation and one for back up. Jim/W5JO ----- Original Message ----- From: "Todd, KA1KAQ" > On Mon, Aug 18, 2008 at 11:05 AM, Robert Nickels > <[EMAIL PROTECTED]> wrote: >> Here's everything you'd ever need to achieve AM Immortality - >> just program >> it to turn on the receiver once in a while, otherwise there >> should be enough >> capacity here to keep your AM station ole buzzarding long after >> your key has >> become silent ;-) > > Ugh.....maintenance nightmare, migraine alert! Was just discussing > these beasts recently with a list member. Yes - they look much > cooler > than they [reliably] worked! > > Jack K9ACT actually built a nifty little loop system for calling > CQ a > year or so back. Works pretty well. Don K4KYV followed suit > sometime > after. That's as much automation as I'd ever want to have in my > station. And those rotary 8-Track-looking beasts are the reason. > There > has to be some audio evidence out there of one going berserk on > the > air. Makes HAL seem like a pre-schooler. > > No sleep tonight, the carousel nightmare is sure to return. Thanks > Bob. Thanks a lot. > > ~ Todd, KA1KAQ (o: ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/[email protected]/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected] To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body. ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/[email protected]/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected] To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
