I figured I'd mention it as we now know its possible and I'm hoping to get this extended frequency response to continue on "and hopefully come back"...
~Brett On Tue, 2009-08-25 at 21:16 -0400, Steve Ellington wrote: > The low frequency audio is gone now. Yes it was certainly nice while it > lasted. > Have to revert to 3.25 if you want LF audio. > Steve > N4LQ > [email protected] > ----- Original Message ----- > From: "Brett Howard" <[email protected]> > Cc: <[email protected]> > Sent: Tuesday, August 25, 2009 9:00 PM > Subject: Re: [Elecraft] K3 Future Factory Hardware Updates;+ New beta f/w > release 3.27 > > > I've not had a chance to spend a lot of time with the new firmware but > here are my initial impressions. > > The NR seems to be really great in CW (but I liked it a lot in 3.25 as > well). It seems to fade into the new settings a bit quicker and not > need to be turned off and back on again. Although I find myself being > impatient and still doing that at times. I did however go up and try > it out on some SSB stuff and it seems to really round out and muffle > some of the SSB stuff. I found the signals easier to copy with the NR > off than on. However the NR in CW is quite impressive at pulling out > some of the weak ones. Its not doing such a good job that I'd not be > able to make copy with out it but for me who is a bit green on copying > its nice to be able to take many signals and make them sound near > perfect. > > One detriment is that when setting the radio to PB CTRL = 0.1 before > it seemed like there was a lot more low frequency response and that > the bottom two bands in the EQ finally did something for a change. Is > there something that one can do to get that audio back? > > Testing the auto notch in a labratory type environment I inject an S9 > signal and then notch it I get 43dB of attenuation. Inject a 1uV > signal and I get 10dB of attenuation. Both make the signal generator > sound as if its been turned off. > > ~Brett > > On Tue, Aug 25, 2009 at 10:52 AM, Eric Swartz - WA6HHQ, > Elecraft<[email protected]> wrote: > > Hi Roy, > > > > As of today, we have made the following enhancements to all K3s leaving > > the factory: > > > > K3 VFO TUNING NOISE REDUCTION (requires f/w 3.25 or later) > > K3 AUTOMATIC FRONT END PROTECTION (1 wire mod) > > K3 IF OUTPUT BUFFER GAIN MOD (For the P3, LP-PAN etc) (1 resistor value > > change) > > > > Based on feedback form those that have tried the preliminary release of > > these changes, we are comfortable with adding them as standard K3 > > features. > > > > Please note that the last item, the IF Output Buffer Gain mMod, is > > slightly different than the similar N8LP mod some have been performing > > on their K3s independently. We determined that only one value needs to > > change to implement the gain increase for the IF output. We are changing > > R8 from 1K ohms to 13K ohms. (Those that have made the N8LP mod may > > also leave it as is.) > > > > Also, we are releasing new beta f/w today, MCU 3.27/DSP 2.24. This is > > already available on the web page at: > > > > http://www.elecraft.com/K3/k3_software.htm > > > > This release includes: > > > > *ADDITIONAL NOISE REDUCTION (NR) IMPROVEMENTS. > > *AUTONOTCH depth improved. > > *SHIFT=.01 FIXED WITH LOW SIDETONE PITCH (300 Hz). > > *VFOs NOW TUNE DOWN TO 490 kHz. > > > > We never sleep in Aptos! :-) > > > > 73, Eric WA6HHQ > > > > Roy Morris wrote: > >> I would like to know if is the intention of Elecraft to incorporate the > >> K3 AUTOMATIC FRONT-END PROTECTION mod and the K3VFO TUNING NOISE > >> REDUCTION mod in future PC boards. If so, I plan to install these mods in > >> my K3s. Roy Morris W4WFB > >> > > ______________________________________________________________ > > 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 > > > ______________________________________________________________ > 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 > ______________________________________________________________ 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
