[Elecraft] Elecraft K4 Vs. Flex 6400

[Bob McGraw]

As I read the numbers the FT-DX101D is not necessarily the top radio.   
Here's why:

Noise Floor ----        FT-DX101D -127 dBm     Elecraft K3S  -135 
dBm      FLEX 6700  -118 dBm

AGC Threshold ----  FT-DX101D 4.5 uV         Elecraft K3S  1.5 uV       
        FLEX 6700 4.2 uV

100kHz Blocking--- FT-DX101D 147 dB        Elecraft K3S  150 dB         
      FLEX 6700  130 dB

Sensitivity ----         FT-DX101D .60 uV         Elecraft K3S .27 
uV              FLEX 6700  2.0 uV

LO Noise -----         FT-DX101D 154 dBc       Elecraft K3S  144 
dBc           FLEX 6700  145 dBc

Dynamic Range wide spaced ---   FT-DX1010D  110 dB     Elecraft K3S    
107 dB    FLEX   99 dB

So you see, one needs to look at ALL the numbers, not just the ranking, 
based on Dynamic Range narrow spaced.

All numbers from Sherwood Engineering 3/7/2022 Receiver test data.

73

Bob, K4TAX



On 3/7/2022 2:18 PM, elecraft-request at mailman.qth.net wrote:
> Message: 2
> Date: Sat, 5 Mar 2022 21:42:35 -0600
> From: Kurt Pawlikowski<kurtt at pinrod.com>
> To:"elecraft at mailman.qth.net"  <elecraft at mailman.qth.net>
> Subject: Re: [Elecraft] Elecraft K4 Vs. Flex 6400
> Message-ID:<6eeff195-f4ba-5836-39b5-07baecf1c73c at pinrod.com>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> Scott,
>
>   ??? Well, yes: The "numbers" say one thing (or several things!), but,
> like I said, I'm in love with Elecraft... So, yes, I'm prejudiced! Of
> course the "top radio (FT-DX101D)" is somewhat more expensive then the
> 6400, and does seem to have some nice whistles and bells. Who knows?
> Maybe I'll do a switch to Yaesu... {'-)
>
>   ??? k WB9FMC
>
> On 3/5/22 18:46, Scott Manthe wrote:
>> Actually, the Yaesu FTDX101D/MP has the best receiver numbers on
>> Sherwood's list. That doesn't mean that it's the best radio for you,
>> but the Flex and the K4 aren't "far and away" better receivers than
>> anything else in the amateur market. Ironically, Rob seems to really
>> like Icoms...
>>
>> 73,
>> Scott N9AA