I must admit that understanding those figures are beyond my knowledge. In practical terms, if I can now hear a below S1 cw weak signal 10KHz away from a S9+60db station before upgrade, what will be the improvement after the installation of KSYN3A assuming operating under the same condition? Such a demonstation was given to me when I visited Icom HQ in Osaka last year in the announcement of the IC7850/IC7851. Again, IC7850 is known foir extremely low phase noise. Can any elecrafters interpret the improvements in an understandable layman terms? 73 Johnny VR2XMCK-Line + KX3 + HR50 寄件人︰ Wayne Burdick <[email protected]> 收件人︰ Elecraft Reflector <[email protected]> 副本(CC)︰ "[email protected]" <[email protected]> 傳送日期︰ 2015年02月14日 (週六) 7:34 AM 主題︰ [Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers) Hi all,
I've updated the KSYN3A FAQ with the following information regarding testing of a K3 with the new synthesizer performed by Rob Sherwood, NC0B. * * * Q: What is the approximate 2-kHz dynamic range (IMDDR3) of the K3 when using the new synthesizer? A: Our tests show in excess of 105 dB with the narrowest filters, though there are many factors, and this should be considered approximate. (A very robust test setup is required to make these measurements.) Rob Sherwood tested a K3 with a KSYN3A and obtained the following results: 2-kHz IMDDR3 with 200-Hz roofing and DSP filter = 106 dB 2-kHz IMDDR3 with 400-Hz roofing and DSP filter = 103 dB Rob will be posting this information in his receiver performance chart (http://www.sherweng.com/table.html) after he completes his full suite of tests. * * * The above numbers were used with Rob's permission. 73, Wayne N6KR ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
