[hpsdr] Dynamic range.

[Graham / KE9H]

Frank:
Where does the overload light come on with this test set-up?
-12 or +8 dBm ?
--- Graham


FRANCIS CARCIA wrote:
> Hi All.
> I finally got a chance to check the dynamic range with the latest 
> software on 75 meters. I started with two signals spaced 2.5 KHz apart 
> and worked out to 50 KHz spacing. The spur made audio with both 
> signals around -26 dBM. So with an MDS around -136 dBM at 500 Hz. 
> bandwidth we are looking at a dynamic range of 110 dB. Blocking 
> happens when listening to one signal at MDS and the other at around 
> -14 dBM.
> I'm impressed.
> Above tests with no attenuator switched in. I have not replaced the 
> relay yet.  
> Frank WA1GFZ
>


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