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/[email protected]/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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