I seem to remember that the 3-6 dB boost in the top band was to correct for rolloff in analog receive filters. I have no idea where I read that, but it was probably back in the 1970’s.
If so, it is probably rarely needed today. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Feb 3, 2016, at 10:17 AM, Jim Brown <[email protected]> wrote: > > On Tue,2/2/2016 10:09 PM, Steve Wilson via Elecraft wrote: >> If I need to increase the low and mid, does this mean I should increase the >> values of the first half of the 8 settings and decrease the second half..or >> something similar? > > You've gotten pretty good advice, but I'll try to summarize it to > step-by-step. > > With speech, content below 400 Hz makes almost no contribution to speech > intelligibility but uses a lot of transmitter power. That low frequency > energy gives the voice more "body," but it also contains breath pops, > handling noise, and room noise. We will be louder and easier to copy if we > get rid of that low frequency content. That typically gives us 3 dB, > Compression adds 10 dB more. The result is to give our 100W radio the > effectiveness of a 2kW radio. > > 1) Go to TXEQ in the menu and check the settings of all the bands. Like Don > and Bob, I suspect that the prior owner has set them badly. > > 2) Set all bands to 0 dB (flat). > > 3) Now, set the three lowest bands (50 Hz, 100 Hz, and 200 Hz) for maximum > CUT (-18). Set the 4th band (400 Hz) for a cut of -3 dB. > > 4) Make sure Compression is turned all the way down. > > 5)Now that we have EQ set properly, adjust Mic Gain per the manual. > 6)Turn up Compression and adjust it until you see 10 dB on voice peaks in the > Comp display when you transmit. > > 7) Get some signal reports. Ask those listeners to set their receive IF to a > fairly wide setting, like 2.7-2.8 kHz. Depending on your voice and your mic, > you may want to cut the 400 Hz band a bit more or less, and you may want 3-6 > dB peak for the top two bands (this will make you "brighter"). > > 73, Jim K9YC > ______________________________________________________________ > 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 > Message delivered to [email protected] ______________________________________________________________ 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 Message delivered to [email protected]
