[Elecraft] help with improving transmit eq

[Walter Underwood]

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 <jim at audiosystemsgroup.com> 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:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to wunder at wunderwood.org