I don't give a hoot about resurrecting an FT1000D, I need the variability. I stand by what I said. The goal is whatever Wayne makes of it. He's the only one I'm trying to convince here. 73, Guy.
On Fri, Oct 29, 2010 at 1:29 PM, Joe Subich, W4TV <[email protected]> wrote: > > > 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
