[TenTec] DSP dynamic range

Sinisa Hristov shristov at ptt.yu
Mon Jul 19 14:55:47 EDT 2004


"Zivney, Terry L." wrote:

 
> According to Doug Smith's web site, the DSP engine in the Orion should
> have 100 dB dynamic range before the analog AGC kicks in.  This is based
> on the 24 bit A to D conversion.


Orion's ADC chip has S/(N+D) specification of 84 dB minimum, 90 dB "typical".
This specification applies to manufacturer's test circuit only,
and one has to consider Orion's actual circuit.


> So, the question is, is the basic analog radio only a 70 or 80 dB dynamic
> range radio,

Looks like that, which isn't very bad,
i.e. most other radios are even worse.


73,

Sinisa  YT1NT, VA3TTN


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