[1000mp] 1000Mp Noise blanker

Mon, 21 Jul 2003 11:33:22 -0500

Seems strange.  Here are a few figures from the OH8NJ site:

Frequency separation is 6khz
NO noise blanker mod

NB setting         IMDR NB OFF    ON

b15                          74.4       83.7
b14                          75.8       83.7
b13                          78.6       83.7
b12                          82.1       83.7
b11                          82.9       83.7
b10                          83.7       83.7
b9                            83.7       83.7

k1xt  Bill

>From: Pete Smith <n4zr@contestin
g.com>
>Reply-To: [email protected]
>To: [email protected]
>Subject: Re: [1000mp] 1000Mp Noise blanker
>Date: Mon, 21 Jul 2003 10:30:53 -0400
>
>At 09:05 AM 7/21/03 -0500, you wrote:
>>Has anyone tried the W8JI NB mod on the MkV or MP?  OH8NJ has measurements 
>>posted on his website. He shows IMDR with and without the mod.  His 
>>numbers show increased IMDR with the NB ON and NO mod as opposed to OFF 
>>and NO mod.
>>Certainly this is a typo???
>
>OH8NJ said in a message to me that it was not -- but attributed the 
>difference to use of a 2-tone signal for testing, and opined that the 
>result would be worse with NB on if a pulse signal were used.
>
>I wish Tom would comment....
>
>73, Pete N4ZR
>
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