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

[Joe Subich, W4TV]

On 12/24/2017 5:32 PM, Don Wilhelm wrote:
 > The real shocker is the BDR: only 119 to 122 dB. That’s 30 dB weaker
 > than the K3S and only 1 dB better than the IC-7300.

My guess is that the "Front end selectivity" is not an "A tracking
preselector" but rather a "B Band Pass" and that the bandpass is
wider that that of the 7300 in order to support the "dual RX"
capability of the 7610.  It's either that or the design/hardware
has some significant bugs.

The other explanation would be simply that direct sampling SDR has a
far wider measurement variability than traditional receiver topology.
Note the 12 dB difference in IMDDR3 between Flex 6700 on 9/29/14 and
the Flex 6700 measured on 3/17/17.

73,

    ... Joe, W4TV


On 12/24/2017 5:32 PM, Don Wilhelm wrote:
> Rob’s IC-7610 RX performance measurements are now posted, at 
> sherweng.com. The ‘7610 came in twelfth on his list.
> The real shocker is the BDR: only 119 to 122 dB. That’s 30 dB weaker 
> than the K3S and only 1 dB better than the IC-7300. I guess no one is 
> using these rigs in high-signal conditions.
> 
> Bragging rights for the K3, KX3 and K3S owners.
> 
> 73,
> Don W3FPR
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