[TenTec] My new ORION

[Sinisa Hristov]

Barry Gross wrote:

> It measures 130-150hz at 6dB down, depending on roofing filter.


The length of Orion's DSP filters is insufficient for
bandwidths below ~300 Hz, and ruins performance below ~180 Hz.
There are probably also some computation inaccuracies.

The 100 Hz DSP filter is a joke. It's ripples settle below
-60 dB at 680 Hz bandwidth, and still hold above -75 dB
at 1200 Hz bandwidth.  GIF can be sent at request.


73,

Sinisa YT1NT, VE3EA