The initial patent for the concept of a separate "noise receiver" detecting noise and blanking the IF system was issued to Motorola for use in their "low band" ... 27 - 54 mHz ... 2-way radios. They called it a "range extender", and this was the label on the control heads that turned the feature on and off.
73! Ken Kopp - K0PP elecraftcov...@rfwave.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html