Nigel, Yes, a similar procedure can be used with the K2. The K2 ALC indication does indicate actual ALC, so the best setting for the K2 is to increase the audio until you see a flicker on the ALC meter and then back off slightly until it disappears.
Because there is no MCU compensation for band to band TX gain variations in the K2, you will likely find the proper setting will change from band to band. Unlike the K3, the K2 has no internal "fancy code" for data modes other than the addition of the RTTY filter set because PSK31 was not popular when the K2 was first designed. BTW - Do use the RTTY filter set for data modes on the K2 rather than SSB mode mainly because it gives you an independent compression setting (which should be 1:1). I set RTTY FL1 the same as SSB FL1 (the OP1 filter must be used for transmit), and then I set FL2= 1.00, FL3=0.70 and FL4=0.40 and center FL2 through FL4 at 1000 Hz. I tune the desired signal near 1000 Hz on the waterfall andin that way I am prepared to narrow the filter if QRM creeps in. The RTTY center frequencies must also be changed to 1000 Hz if the DSP filters are to be used in conjunction with the IF filters. 73, Don W3FPR Nigel wrote: > Don, > Can this approach be used with the K2 in digital modes and if so what are > the suggested settings for the 'bars' when the ALC is turned on? > > 73, Nigel ZL2DF > > > Snip > The K2 has operated this way all its life, but the K3 has a more > sophisticated detection mechanism, so control can be more precise than > the K2. It still takes a bit of output time for the power to settle > down, and that fact has caused a bit of 'wonderment' among users - if > the response is too fast, the power level will oscillate because of the > required high gain in the control loop, so it take a couple dit times > (or equal for SSB and Data modes) for the power to level out. The > control loop is reset with a band change, and a few other actions that I > cannot recall right now. > > 73, > Don W3FPR > > > > > > ______________________________________________________________ > 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 > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.409 / Virus Database: 270.13.76/2345 - Release Date: 09/04/09 > 05:51:00 > > ______________________________________________________________ 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
