[Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)

[Joe Subich, W4TV]

Argh!  That will make the K3 second to the Flex 6700 in Sherwood's
table <G> although the 100 KHz blocking will be better than the "A/D
Limited" for the 6700.

73,

    ... Joe, W4TV


On 2015-02-13 6:34 PM, Wayne Burdick wrote:
> 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
>
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