Guy, You are quite right about the ability to whistle softly - and I might add, with only a single tone - usually a whistle is multi-frequency.
I would suggest a better solution for testing than to 'whistle into the mic'. There are some PC based tone generators available as freeware - run the tone generator on the PC and direct the microphone in front of the speaker (or use the line input on the K3 to inject the audio - it depends on what you are trying to test). Google for "Marchland Function Generator" for a nice generator capable of several different waveforms or "ttg.exe" for a sine wave only generator with sweep capability. I use both and they work well, and I am certain there are others - you can use NCH tone generator for a trial period before it stops working, 73, Don W3FPR Guy Olinger K2AV wrote: > K3 is not an analog radio. Mic goes to a fixed gain op amp, an AF > multiplexer switch, and then to analog-digital conversion and number > soup. All sanity and/or weirdness is digital sanity and/or digital > weirdness. > > Whistling is usually 20-30 db louder than your spoken voice. That's > why people whistle when a shout doesn't make it. Takes a practiced > whistler to whistle softly. More like trying to play a woodwind > intrument. I'm sure some couldn't whistle soft to save their lives. > My mother couldn't, but she didn't need to. In my growing up > neighborhood, every mom had a distinctive whistle to round up their > kids. I could hear that whistle over the rumble of the big planes > over on the runways at Kirtland AFB, and she would never take "I > didn't hear it" as an excuse. But I digress... > > You're expecting hi-fi whistling into a mic? Not many voice mikes > will tolerate whistling and are already into distortion in the element > at that point. Why should a designer/manufacturer of a communication > rig spend any time/money to make sure a whistle is hi-fi? > > If you CAN whistle softly, try whistling at a level that only shows > ALC of 3 or 4 when the MIC/CMP is set up for your voice. Turn off MON > unless you are using headphones. Listening to MON on a speaker while > using a microphone seems to be third grade bad operating practice and > begs for SOME kind of distortion from looping audio. > > Since this is a digital radio, the artifacts from looping audio and/or > smash-mouth overload may not be the familiar analog symptoms. > > ______________________________________________________________ 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
