Hi Dick, The variable crystal filters in the K2 are very good. In fact the best I have ever used. As Don says, unless you have a bad component, crystal filtering should be excellent down to about 250 Hz, and the DSP down to 100 Hz before you get a bit of attenuation of signal. You can even boost the volume a bit in the DSP adjustments. I originally had similar problems to you when I first built the rig in 1999. Now I use MixW to check the filters visually. You can also use Spectrogram.
Pictures don't lie. I have some MixW screens shots on my website here. I think it would be hard to get these kind of results with most other ham transceivers. http://users.ev1.net/~spituch/Steve's%20Page/Radio/RTTY/RTTY.html >From the photos alone the performance of the filters look phenomenal. If you adjust the filters while looking at the MixW screen you can get instant feedback on the adustments you are making and easily adjust the filters perfectly. Centering the filters this way is a snap. One of the reasons for the great popularity of the K2 is that you don't need to add any filters. Regards, Steve, W2MY -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.405 / Virus Database: 268.10.9/416 - Release Date: 8/10/2006 _______________________________________________ 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
