I'm sorry but I'm not going to sit idly by while some other ham who's in love with his 1980's FT-1000 dictates why I can't have a Q setting on my rig. The Q is a necessary part of this feature in my mind. This is NOT an FT-1000 this is a K3. Just because your old rig used to work well for you without a Q has nothing to do with my new rig. And if you must make comparisons, than you can use the FT-2000 and it's contour filter (APF) which does have it's variable Q and boost level... Both living in the menus... Sorry but times move on, and you should too. Only the IDEA of the APF was conceived from the FT-1000, not the entire design and implementation... Please don't limit the rest of us.
> Date: Fri, 29 Oct 2010 13:29:12 -0400 > From: [email protected] > To: [email protected] > Subject: Re: [Elecraft] APF in 4.16/2.63 works well! > > > > I would like to be able to ***VARY THE Q*** with the width control and > > LEAVE IT ON with a mild Q, and sharpen it as required. > > The design goal was to duplicate the FT-1000D APF. The FT-1000D has > no variable Q function. What you are proposing is completely different > than the design parameters ... you want an Autek QF1 not the FT-1000D APF. > > >> When APF is in there is no moderate setting, it takes over the > >> passband and makes copy of a signal up band difficult. > > That's the goal of the FT-1000D APF ... single signal reception in > noise and QRM. If you want a context filter, the original Dual PB > filter with it's variable with and shift fill that role. > > >> ONLY when APF is on could we have the WIDTH tap toggle between APF > >> Q displaying APF Q=3 in lower display and between Roofing/DSP > >> bandwidth displaying BW 0.40??? You could do the same thing with > >> SHIFT to go back and forth between adjusting Roofing/DSP SHIFT > >> displaying FC *0.45 and APF *0.45. > > Width/shift taps are already "taken" if the user has not chosen PB > Shift=.01. There is no current requirement to select PB Shift=.01 > in order to use APF and I hope that *someday* Wayne will give us the > ability to use LO-CUT-HI with PB Shift=.01. > > 73, > > ... Joe, W4TV > > On 10/29/2010 12:58 PM, Guy Olinger K2AV wrote: > > APF has a very significant improvement on weak signals in the noise. > > I completely agree with prior posters. HOWEVER... > > > > I would like to be able to ***VARY THE Q*** with the width control and > > LEAVE IT ON with a mild Q, and sharpen it as required. If I can back > > it out to 2 dB with a width function I would probably leave that on > > all the time and grind in as needed. I already do that with Width in > > weak cases that are on frequency. ONLY when APF is on could we have > > the WIDTH tap toggle between APF Q displaying APF Q=3 in lower display > > and between Roofing/DSP bandwidth displaying BW 0.40??? You could do > > the same thing with SHIFT to go back and forth between adjusting > > Roofing/DSP SHIFT displaying FC *0.45 and APF *0.45. Using WIDTH to > > control Q is intuitive. > > > > When APF is in there is no moderate setting, it takes over the > > passband and makes copy of a signal up band difficult. It will > > require repeated use of DUAL PB to go in and out for weak signals and > > back out for normal use. Use of a HOLD function as a frequent change > > is a problem. In trying to get used to the HOLD on DUAL PB to go in > > and out of APF to hear in the rest of the channel, I repeatedly hit > > NTCH instead. HOLD's are only good for settings that persist for a > > while during operation. > > > > E.g. I don't need APF ONLY as a better substitute for 50 Hz. I need > > it to work ALSO as a milder center emphasis inside the 400 Hz roofer, > > and be able to twist a knob somewhere to move between mild and sharp. > > Even with what appears to be only a 2 dB peaking around 450, the MP > > was improved inside its excellent dual INRAD 400 selectivity. > > > > If this is not done, it will be very difficult to use it well in a > > contest. No easy-to-use variable Q is a deal-breaker for me. In the > > end for contests it will cost Q's and will have to tell people to > > leave it off, just like NR. Only turn it on for a really weak one if > > you can remember how, and then turn it right back off. Then when I > > get home chasing weak DX I'll turn it all back on again, and work some > > stuff I couldn't hear before. > > > > 73, Guy. > > > > On Fri, Oct 29, 2010 at 11:01 AM, drewko<[email protected]> wrote: > >> Yes, I realize that. I would like to compare what is heard using the > >> APF filter to what is displayed by BeaconSee with its sub-noise signal > >> recovery algorithms. > >> > >> 73, > >> Drew > >> AF2Z > >> > >> > >> On Fri, 29 Oct 2010 10:55:38 -0400, you wrote: > >> > >>> > >>> I think you may be confused about what APF is. It is NOT a waterfall or > >>> any > >>> kind of visual indicator. It IS an Audio Peaking Filter (APF) meant to > >>> enhance weak signal audio using the processor between your ears. It will > >>> not automatically show you where weak signals are in a spectrum, but if > >>> you > >>> know approximately where to look (either from a Packet spot or waterfall > >>> trace) it can help your ear/brain decode the CW audio buried in noise. > >>> > >>> 73, Bill > >> > >> ______________________________________________________________ > >> 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 ______________________________________________________________ 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
