Re: Power point

Posted by Alan Bloom on Sep 17, 2009; 4:48am
URL: http://elecraft.85.s1.nabble.com/Power-point-tp3651883p3660982.html

On Wed, 2009-09-16 at 20:11 -0700, KGØUS wrote:
...
> By just reviewing the ARRL test results, is there a simple way of comparing
> the FT1000 measured with 250 Hz bandwidth IF filters with other radios
> tested by the ARRL that were tested with 500 Hz bandwidth IF filters?
>
> 73,
> Dave

It makes the noise floor 3 dB lower.  So microvolts sensitivity would be
reduced by a factor 0.707 (e,g, .28 uV at 500 Hz would be 0.2 uV at 250
Hz), blocking dynamic range would be 3 dB greater, and third-order IMD
dynamic range would be 2 dB greater.

Al N1AL



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