Bob said: > I used it after modification to inprove the filter rejection (positive) and it helped a lot. > But I was not very glad with the results ! > CW 1.0 - 0.7 - 0.4 - 0.2 > LSB 2.4 - 2.0 - 1.8 - 1.6 > USB 2.4 - 2.0 - 1.8 - 1.6 > RTTY 1.8 - 1.5 - 1.0 - 0.6
Hi Bob, I use MixW too. I was using it with my TS850 with its nice 8.8 mHz 270 Hz filter for PSK31. With the MixW waterfall I could see that the Kenwood filter was pretty much about 300 Hz wide. It was a pretty nice setup for PSK31. I have an old K2 (s/n 402) that has not yet been upgraded with all the filter mods. I put the K2 in line with MixW and put in the 100 Hz wide CW filter. Note that I have not aligned this rig in 5 years. The 100 Hz K2 filter outperformed the 270 Hz filter in the TS850. I would say that the K2 filter at the nominal 100 Hz setting was about 175 Hz wide as judged by looking at the MixW waterfall and spectrum views. I'm sure using Spectromgram would give a better esult. I sold the TS850 to help pay for some K2 upgrades. So the K2 filtering stands up to and surpasses one of the better analog radios ever made. True - the filtering will not be IF Digital brick wall, but with the addition of the AF DSP unit, and the good BDR and IMD numbers that the K2 has, it should be tough to beat. Regards, Steve --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.802 / Virus Database: 545 - Release Date: 11/26/2004 _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
