Even before that KPO / KNBR had STA to operate FSK for the US Navy. Bill Ruck San Francisco At 07:04 AM 8/26/2011, you wrote: >In the 60s Florida had several AM stations use 10 Hz fsk set up for >EBS. I was told it worked flawlessly. +5 & -5 Hz. It could still >work with ascii. > >Robin Cross >Chief Engineer KCUR >816-235-2880 W >816-235-2865 Fax >816-235-1551 Receptionist