Bob: This is becoming somewhat off topic... While I agree in principle, in practice, there are some high frequency sibilance "formants" that need bandwidth up to and including 2.8kHz to almost 3kHz to be well understood. There are also some harmonics, especially in male voices, that go down below 300-400 Hz. This is all variable with each person's individual voice, so YMMV.
Joe, W4TV, clued me in to a small nuance that I had completely neglected a few months back. He listened to my EQ settings and mentioned that my audio was punchy but "thin" as he put it. I listened to a recording that AD4C made of me and I realized that I was clipping off some low harmonics by completely dropping everything below 400Hz. I now add a little +3dB bump to my EQ settings around 200Hz. It gives me some added "presence". That little hump sort of "fattens" my voice and helps lift it over hissy band noise a bit. Im setting up the NQ4I Orions the same way, too, and its made quite a difference. I also like a little hint of "Harmonic Distortion" in my audio, especially in the DVK. Just my personal preference, it adds what I call "edge" to the a CQ Message Loop. My TS850 did this with "high boost" on by itself, and I can duplicate it with the MicroKeyer's recording path. I record ALL DVK through the MicroKeyer's recording facility now, with consistently repeatable results. I play out through N1MM's DVK through the MicroKeyer2's soundcard. I have almost gotten used to the "different" EQ band center frequencies in the K3 Equalizer, too :) I have owned K3 #3192 for almost 6 months now. It has taken me almost all that time to feel comfortable with the audio chain to the extent that I was comfortable with my former TS850S equipped with a slew of Behringer and Radio Design Labs outboard processing toys. The only things that I would add to the K3 transmitter processing chain would be a bit more headroom, a Pre-DSP two band audio leveler/AGC and handles for Attack, Decay and Ratio on the RF Clipper. If Lyle could do this I would kiss the ring! They should hold a seminar on this at Elecraft and not let anybody access the last three adjustments until they passed a certification test, however! It would be like giving Nuclear Missiles to Mohmar Khadaffi in the hands of the uninitiated :) -lu-w4lt- ----- Original Message Follows ----- From: "Bob McGraw - K4TAX" <[email protected]> To: <[email protected]>, <"Elecraft List <elecraft"@mailman.qth.net> Subject: Re: [Elecraft] W2IHY 8 band equalizer and EQ Plus Date: Tue, 27 Apr 2010 20:40:25 -0500 >One of the things we often fail to implement is the >transmit bandwidth being adjusted much like the receiving >bandwidth on the other end. In a contest situation likely >the receiving station is using a 1500 to 1800 Hz receiver >bandwidth with likely band pass tuning such that the lower >300 to 500 Hz of that is attenuated. This makes for an >effective receive bandwidth of some 1300 Hz or so. > >Now then with our transmitter setting for a "full width" >normal SSB bandwidth of say 2.6 or 2.8 KHz and a low end >roll off of say 120 Hz this make for an effective >bandwidth of some 2600 Hz. Yes our transmitter power is >spread over that bandwidth. Wouldn't it make more sense to >concentrate the transmitter power over say 1300 Hz rather >than 2600 Hz? In doing so one gains almost 3 dB of >effective power increase with actually no increase in PEP. > Plus the other folks on the band will appreciate the >narrow signals. > >Yes of course it will sound pinched up but in reality there >is little information in the male voice spoken range below >400 Hz and little above 1500 to 1800 Hz. But hey, some of >the compressed and processed signals only serve to occupy >the full 2600 Hz of bandwidth, with what? It's not pretty >for sure. So if you want a screaming DX pileup busting >signal, squeeze in the bandwidth and don't worry about the >EQ or the special purpose mike. Your good sounding SSB >mike into that transmitter bandwidth will do the job just >fine and the neighbors on either side of your frequency >will appreciate your efforts. > >73 >Bob, K4TAX > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
