[Fwd: LF: Rcvr - why not measure noise floor?]

[Andre' Kesteloot]

M. Bruno wrote:

> I agree that the sensitivity is not of great value to extimate an LF RX.
>
> But why those tests are not done measuring the usual 3 db S+N/N ratio?
> This will be much more useful, and not ear-depending. Knowing this number
> you may scale the signal to other BW and other ears.
>
> Also, since the 3 dB MSD/noise floor level is higher you reduce the
> possibility
> of ground loops and so ...
>
> Oh well, you need a true RMS audio voltmeter, but today it is really
> inexpensive
> (few US$ or £ or Euro for an HP 3400A).
>
> 73 - Marco
>
> Marco Bruno - IK1ODO
> spin@inrete.it
>
> SPIN Electronics - www.spin-it.com