[Elecraft] K3 Filter Gain question.

[Bill W4ZV]

John Ronan wrote:
> 
> 
>> Regarding the warbling sound you're hearing in diversity, it's  
>> because your
>> filters are set to different offsets.  In your case you should set  
>> both 500s
>> to -0.74 and both 2.7ks to the same (either -0.76 or -0.77).
> 
> Ok, I assume though that this will make the (moved) filters slightly  
> asymmetric then in the passband.  Also I found this post from Wayne  
> that says it's ok :)
> http://www.mail-archive.com/elecraft@mailman.qth.net/msg71951.html
> 

You'll never notice the difference in shifting your 500s by + and - 10 Hz
(i.e. both to -0.74) since 10 Hz is only 2% of total bandwidth.  However
both offsets should be identical to avoid the warbling sound you're hearing
in diversity.  Of course the 2.7k is even less sensitive to a 10 Hz shift
since it's a much wider BW.

Thanks for locating that post by Wayne (which W7TEA had asked about).

73,  Bill

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