Tim O'Rourke wrote: > When I am on 12 meters and select DSP menu with Display button I detect loud pulses while in this menu > Normal? Yes, when you are in the DSP or RTC menus you may hear auxbus traffic. Since you never operate in this mode, it's not a problem. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco