Comparing DSP to SCAF is not easy to do since they are not the same thing. In SCAF, you're dealing purely with the Analogue signal and varying the BW of the audio signal using switched capacitors. This is effective but lacks noise reduction. DSP on the otherhand will not only give you auto notch and allow you to vary the BW of a received signal, it also provides noise reduction by actively filtering out background noise to its allowable DB level. Unfortunately in doing so, digital artifacts can remain on the signal. In most cases, these artifacts are not very noticeable. Some have complained that DSP does not work well on CW. My personal experience is that the DSP for the K2 does an admirable job and in most instances is not needed with the already excellent filtering available as standard in the K2. SCAF filtering works well in narrowing the BW but does not have Noise Reduction like DSP has. In fact it is not always necessary to narrow the BW of a signal when using DSP. Many occasions Noise Reduction is all that is needed. I have 2 K2 radios and one has the DSP while the other has the SCAF filtering. I'm very pleased with both but the edge goes to my K2 with the DSP filter.
Robert VE3RPF ----- Original Message ----- From: "brian" <[EMAIL PROTECTED]> To: "Elecraft List" <[email protected]> Sent: Thursday, December 30, 2004 12:59 PM Subject: [Elecraft] K2 DSP vs SCAF audio filter > > Gentlemen and Ladies, > > Have any of you compared the K2 DSP with a SCAF audio filter ? I have a > SCAF and am considering the K2's integrated DSP but really wonder if > there, in the end, will be a significant change in my ability to copy > weak signal CW signals. > > Regards, > > Brian n6iz > > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > 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 > > > -- > No virus found in this incoming message. > Checked by AVG Anti-Virus. > Version: 7.0.298 / Virus Database: 265.6.6 - Release Date: 12/28/2004 > > -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.298 / Virus Database: 265.6.6 - Release Date: 12/28/2004 _______________________________________________ Elecraft mailing list Post to: [email protected] 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
