[Elecraft] K4 RX dynamic range

[Lyle Johnson]

Mark,

The "20 dB lower than a K3" figure is an estimate for 100 kHz Blocking 
Dynamic Range rather than the 2 kHz Narrow Spaced Dynamic Range.

The K3 is listed at 140 to 150 dB (depending on model, synthesizer, etc) 
on Sherwood's Receiver Test Data page.  The K4 series without the "HD" 
option are estimated to be in the 120 to 130 dB range, typical of other 
direct sampling SDR products (Flex, Apache, Icom, ...).

73,

Lyle KK7P

On 6/4/19 4:00 PM, mark roz via Elecraft wrote:
> Before putting my money up front for the first run of K4D I need to know what is the dynamic range
> of the K4D RX at 2kHz spacing. K3 is 105 dB and K4D? If it is 20dB lower than K3 than it would be 85dB-correct?