[Elecraft] FW: [Elecraft-K3] K3S Comparison table finalized (link attached)

Jim N7US n7us at arrl.net
Mon Jan 28 20:18:43 EST 2019


I'd be interested in seeing a similar comparison of the K3S to the
FlexRadio.

Jim N7US

-----Original Message-----

My two cents:


> Rob wrote:
> 
> I would count the order differently if numbering is of interest.  The
radio at #1 cannot be reproduced with current software.

Clarified recently in footnote "y" of the RX performance table.


> That makes the K3S #1 and the 7610 #9 if you want to count for some
reason. The difference in 2 kHz dynamic range is 106 dB compared to 98 dB.

The table is sorted on 2 kHz IMDDR3. However, the table also shows dramatic
differences in blocking dynamic range. For example, the K3S is 20 to 30 dB
stronger in this regard than all of the direct-sampling radios in the table.
This is due to the K3S having narrow-band filtering (crystal filters) ahead
of the ADC. This can greatly reduce desense and other artifacts in any
high-signal situation (Field Day, KW neighbor, multi-TX station, etc.).

Wayne
N6KR




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