Decimation can help but it is not a magic bullet that eliminates
the effects of ADC overflow and/or blocking due to gain reduction.
73,
... Joe, W4TV
On 5/19/2012 7:57 PM, Tom Azlin N4ZPT wrote:
> decimation counts
>
> On 5/19/2012 7:29 PM, Joe Subich, W4TV wrote:
>> The issue will be the severely limited dynamic range of the 16 bit
>> ADC. Without effective AGC ahead of the ADC there *will* be overload
>> problems on crowded bands (e.g. 160/80/40) where any transceiver must
>> deal with many extremely strong ("local") signals while maintaining
>> maximum sensitivity. With AGC, the strong local signals will cause
>> "blocking" as the gain is reduced to prevent overflow of the ADC.
>
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