Wow! I'm new to Elecraft (K3) and this list, and only enough time to read 25 or so posting each day, which leaves me in the dust. I'm too busy setting up my M/2 station for this season and getting used to the K3 which will be on one side for the first time. But, I gotta ask, what in the heck is APF? Clearly, I'm suffering from TMI (too much information). Being a cw contester for over 50 years, I guess I'm far less fussy on the details than most of you, which is probably why I've waited so long to add my first K3 and hopefully, the second very soon. John, N0IJ In a message dated 10/26/2010 19:28:32 Central Daylight Time, notforc...@hotmail.com writes:
Exactly Don, my point exactly, You DID miss the point. You DON'T understand why someone would want to do it. That's why you can't understand why he's asking for what he's asking. We're not all built out of stone. We don't all want to listen or send our CW at the same pitch all the time. If find that in Noisy conditions I like to lower my side tone down to 380Hz, yet when I'm in a casual QSO I find that I receive better at about 450Hz. When I have 2 stations that are close to each other, and I need the notch to do something for me that it doesn't do as well when I have the pitch set to a low freq. I like to have my pitch set up around 650Hz. It just depends on the conditions, the noise level, the stations that are in the pass band, and how I use the tools that the K3 has to deal with them. IE DSP, NR, NB, RF GAIN, Notch, Soon to be APF, REV CW mode, etc..... It's more than just my "comfort zone" when it comes to the IF pass band, or centering someone in it. We don't all use our radios the same, as I'm sure you already know. For this reason, I DO understand exactly why this person would want to be able to shift his IF WHILE in a QSO, WITHOUT having to interrupt it with the side tone pitch freq. as he's doing so. I've had this happen to me on more than one occasion. As for the Zero Beating, oh boy are you right. People out there have no idea that their side tone has anything to do with their IF Center. They all expect that you have your filter open up to 1KHz when they answer you... I can't tell you how many times people will answer me as much as 100Hz off of my IF center. But they can't all afford a K3 I guess. The new rigs these days don't all tell you when you're in the IF center. The ones that do pretty much have a little orange light that comes on, and most of the people that use these radios don't even understand why that's there. > Date: Tue, 26 Oct 2010 19:07:46 -0400 > From: w3...@embarqmail.com > To: notforc...@hotmail.com > CC: elecraft@mailman.qth.net > Subject: Re: [Elecraft] APF For K3: progress report > > Sorry, but I did not "miss his point". It simply boggles my mind that > someone would want to change his chosen sidetone pitch. I have chosen > mine carefully - that is the pitch where my mind/ears perceive the CW > with the best clarity and comfort over the 'long haul'. > I can understand why some might want to make a "change of pace" during a > long contest, and change the sidetone pitch a bit - but for normal > operating, I want the pitch to be the same as I have previously selected > -- that is the pitch where I can operate CW best. My own choice is 650 > Hz, but yours may be different. > To change the pitch for a particular QSO seems counterproductive to me. > If one is hearing a signal best at a pitch which is not the current one > set for the sidetone, I would think that to be an indication that I have > chosen the wrong sidetone pitch and I should think seriously about > changing to that pitch that I perceive to be the best in the midst of > signals on the band. > > I guess this is part of the reason we hear so many QSOs that are not > zero beat. We used to know how to do that very well with separate > transmitters and receivers, but in these days of transceivers, I think > we have lost that ability - it seems to me that if we can hear a signal > within our passband, that we should just transmit and expect to be > answered - with no need to zero-beat. Sorry, but it just does not work > that way - the other station may have narrow filters on and may not hear us. > > 73, > Don W3FPR > > On 10/26/2010 5:13 PM, The Smiths wrote: > > Wow Don, you really really missed his point. He's trying to say that the Pitch control turns on a tone generator while you're setting it. He's asking that when you push the button that sets the pitch freq. that the tone isn't generated.. That way he can hear the person he's talking to while adjusting the freq. of his IF's center pass band area. Plenty of us wish we had this ability.. There are MANY times when I feel like I want to adjust the tone of the persons signal without moving it away from the IF center, and then having to chase after it with the shift knob.. His idea would do exactly that. > > > >> Date: Tue, 26 Oct 2010 10:50:51 -0400 > >> From: w3...@embarqmail.com > >> To: drew...@verizon.net > >> CC: Elecraft@mailman.qth.net > >> Subject: Re: [Elecraft] APF For K3: progress report > >> > >> Drew, > >> > >> ?HUH? > >> The "pitch" function that you say you want - change the pitch of a > >> received signal - already exists, just turn the VFO knob, it will change > >> the pitch of the signals which are being received. Normally one would > >> want to tune the desired signal to the pitch which matches the sidetone, > >> not the other way around. Just tap the SPOT button to zero-beat, in > >> fact the K3 can do that automatically (within a limited range). > >> > >> Things that are changed by the PITCH control are the pitch of the > >> sidetone you listen to during transmission, the frequency offset used > >> for transmission and the CWT center frequency as well as the position of > >> the center of the CW passband - it does not change the pitch of signals > >> being received. > >> > >> Can you be more specific about what you want. > >> > >> 73, > >> Don W3FPR > >> > >> On 10/26/2010 9:37 AM, drewko wrote: > >>> Paul, > >>> > >>> I would be very happy to just have a "live" PITCH control, as has been > >>> requested a number of times. By "live" I mean being able to hear the > >>> received signals as you vary their pitch, without changing their > >>> location in the passband. That would be much better than having to > >>> first adjust RIT for a more suitable pitch tone then subsequently > >>> having to catch up to it with SHIFT as you describe below. > >>> > >>> As it is now, PITCH is a sidetone control, not a signal control. When > >>> you turn on PITCH the sidetone comes on and the signals go away. To me > >>> it is as nearly inconvenient as it would be having the signals go away > >>> every time I moved the AF Gain control. > >>> > >>> The peaking part of APF would be a nice enhancement but it's the live > >>> pitch control that I really want. > >>> > >> ______________________________________________________________ > >> 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 > > ______________________________________________________________ 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
