Great to hear from you, Rex. Maybe the apidictor is a device whose time has come. With modern electronics and laptop portable computers and spectrum analysers, it is possible that this idea could be pursued further and get into common usage. To find what has been said here about it, a simple search at the site below, using 'apidictor' as the key will bring up over 30 hits. allen ----- See if your questions have been answered in over a decade of discussions. BEE-L archives & more: http://www.internode.net/HoneyBee/Bee-l.htm Search sci.agriculture.beekeeping at http://www.deja.com/ or visit http://www.internode.net/HoneyBee to access both on the same page.