Re: [Elecraft] Changing CW pitch on K2
I aligned the filters on my K2 for several different pitches and wrote down the values for each. Then I was able to change pitch fairly quickly, within a minute or two, by dialing in the recorded values. 73, Drew AF2Z On Wed, 23 Oct 2013 16:08:30 -0700 (PDT), you wrote: If I change the CW pitch on my K2, do I then need to realign any of the filters? Thanks, 73 __ 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
Re: [Elecraft] Changing CW pitch on K2
I few years ago, I built a tiny transmitter box using a simple Canned Crystal Oscillator that runs at 7.385mhz. Pop a 9 volt battery on it and lay the wire lead near the K2 when I’m re-adjusting the filters. I know it’s not the conventional method, and I’ve tried the others. But it’s quick and easy and gives me good results. Have fun with your K2!! :-] N1BBR -- bw...@fastmail.net __ 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
Re: [Elecraft] Changing CW pitch on K2
Eddy, The answer is maybe. If you are changing only by a small amount, then you will not have to realign the filters. If you change the pitch by a goodly amount, then the answer is yes. Look at it this way - if you have the most narrow filter set for a center frequency of 600 Hz and the filter width is 200 Hz, that filter will reproduce a frequency of 500 Hz to 700 Hz and still be within the bandpass (although the extreme frequencies will be on the edge of the filter bandpass). If your change is greater than that range, you will want to re-align the filters. I would suggest that if you are experimenting with your preferred CW pitch, you should not change the filter alignment, but after you settle on a given pitch, then align the filters to center at that pitch. If you have the KAF2 or KDSP2 installed, I would strongly recommend that you adjust the center frequencies for those options to your new chosen CW pitch. For information about setting the filters to your chosen pitch, refer to Part 3 of the K2 Dial Calibration article on my website www.w3fpr.com. 73, Don W3FPR On 10/23/2013 7:08 PM, Eddy wrote: If I change the CW pitch on my K2, do I then need to realign any of the filters? __ 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] Changing CW pitch on K2
If I change the CW pitch on my K2, do I then need to realign any of the filters? Thanks, 73 __ 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
Re: [Elecraft] Changing CW pitch on K2
Yes, if you want to center the new pitch in the filter. On 10/23/2013 4:08 PM, Eddy wrote: If I change the CW pitch on my K2, do I then need to realign any of the filters? Thanks, 73 __ 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 -- 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
