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. 73, Drew AF2Z On Mon, 25 Oct 2010 23:12:51 -0400, Paul, W9AC wrote: > >Here's an example of using APF in conjunction with RIT. I normally leave my >CW offset at 650 Hz. Some of my CW operating is very weak signal DX on the >low bands. When copying extremely weak DX in the midst of static crashes, I >need to temporarily shift pitch to less than 400 Hz. Some ops, including >W4ZV, have noted that weak CW copy can improve when low pitch is used. I >also don't want to tamper with my normal CW offset if I don't need to. > >By engaging in RIT, I would like to temporally dip the incoming pitch, leave >my CW offset alone where I want it 95% of the time, and then adjust the >frequency of the APF to match/peak the incoming pitch selected by RIT. If I >want to experiment with different pitch settings based on band conditions, I >also want the ability for the APF peak to track the pitch I've selected on >RIT. That requires a tunable APF. This is precisely what the FT-1000/D >gave its users. > >Of course, the greater the departure of the RIT pitch from the offset may >require a wider DSP filter setting and/or roofing filter. But under these >weak band conditions, wide DSP and roofing filters are just fine when band >activity and adjacent interference is low or moderate. When I'm working >early morning grayline DX on 80m or 40m, I rarely encounter strong adjacent >stations since conditions are long and stateside is not heard much of the >time. Because of this, my overall Rx bandwidth is generally set to 2.8 kHz >or greater. Even when weak DX is running split and listening up 2 kHz, >there's ample separation to allow a filter settings wide enough to depart a >few hundred Hz from the CW offset. > >Paul, W9AC > ______________________________________________________________ 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
