Re: Airspy HF+ BDR 110dB


On Mon, Nov 13, 2017 at 12:29 am, adam9a4qv wrote:
Can somebody explain how this number is calculated or measured?
BDR 110dB?
The method used ?

Measured with a weak signal at -115 dBm and a blocker 20kHz away. The blocker is increased until the weak signal decreased by 1 dB - and we are still conservative here. The datasheet says 113 dBm typ.
Also, given all the AGC loops involved, the whole gain distribution is optimized for best sensitivity while all the stages are continuously operating in a comfortable region.

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