Interesting! I wonder if Ten-Tec did this to reduce the DSP workload thus
increasing overall performance (i.e.. sweep, and user input response). If I
understand correctly, if you cut the bandwidth that a DSP filter must contend
with by 2, you cut the "work load" by four; the filter requires half the
coefficients, and since the sampling rate can be cut in half as well,
(decimation is the term), a factor of one-fourth results!
73,
Lin
WB1AIW
Rick Williams wrote:
> Based on Sinisa' suggestion I have replotted my AM received signals on both
> the Main and Sub receiver. As he points out BOTH are limited with 2.056
> firmware to +/- 3 kHz.
>
> As opposed to sweeping the bandwidth with a controlled source I have used an
> amateur QSO on 80 metre AM and a commercial AM station on the Sub receiver.
> (It was quick and easy that way.)
>
> http://www3.telus.net/ve7tk/Orion_Sub.pdf
>
> AM is not a big issue for me so I have not gone back to V 1.xxx - I'll leave
> that to others. Thanks for the interesting discussion.
>
> 73,
> Rick
> VE7TK
>
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> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
>
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