[Elecraft] IC-7610 added to Sherwood's list

[Wayne Burdick]

Alan,

Maybe this (low BDR) explains why the ‘7610 provides such a huge amount of user-selectable attenuation. I think it’s on the order of 45 dB.  

Wayne
N6KR

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http://www.elecraft.com

> On Dec 24, 2017, at 9:27 PM, Alan <n1al at sonic.net> wrote:
> 
...

> In my opinion, the best apples-to-apples comparison of direct-sampling and superhet receivers is blocking dynamic range (BDR).  It is a simple measurement of the ratio between the strongest signal the receiver can handle and the weakest signal it can hear.
> 
> BDR tends to be limited by phase noise when the interfering signal is close to the desired signal.  This is not a measurement artifact but reflects actual on-the-air performance.  Direct-sampling receivers tend to have an advantage close-in, although a superhet can also do well if the synthesizer is carefully designed (for example the K3s :=)
> 
> Alan N1AL
>>