I have two K3s, one has the new DSP board, so I hooked them up together and listened to low frequency tones. The higher SN radio definitely has more bass. In fact I have noted a few times, just how low it goes. It seemed very unusual for a communications radio to do that. So I listened to the older one and it has less bass, but to be honest, I don't see a problem with it. It sounds just fine to me. Now if it was my stereo FM receiver I would heave it out, but I chase DX with it and see no big reason to update it. I guess it is a personal decision for folks. I am using a Heil headset to make the comparison. I am almost 65 years old and my hearing is hosed on the high end. I am not sure if it is from the several decades of weak signal work, or having way too much fun in the 60's, but my upper limit is now a bit over 6 or 8 kHz. I tune in CW at about 450-500 Hz.
Dave K1WHS ----- Original Message ----- From: "Vic K2VCO" <v...@rakefet.com> To: "k4pi" <k...@bellsouth.net> Cc: <elecraft@mailman.qth.net> Sent: Thursday, December 17, 2009 9:43 PM Subject: Re: [Elecraft] K3 Rev C +AF filter > k4pi wrote: >> I am anxious to see what the new board will do. I have used QF1A for >> many >> years and never found a radio yet where it did not enable me to copy >> signals >> much better. I treat my QF1As like gold and never operate without one in >> the Peak mode. > > All the board changes do is improve low end response, which in my opinion > is already more > than good enough for CW and SSB work. > > The 'filter' mentioned is not a peak or null filter, but just a lowpass > filter to remove > some very high-pitched DSP artifacts that bother some operators. > > In my opinion, this replacement board is not something that everyone > needs. I will > probably order the filter sub-board by itself when it becomes available > even though I'm > probably too old to hear the DSP artifacts in question, but don't intend > to bother with > replacing the DSP board. > -- > 73, > Vic, K2VCO > Fresno CA > http://www.qsl.net/k2vco > ______________________________________________________________ > 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 ______________________________________________________________ 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
