Thread: 52 dB any good?
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Old April 28th 06, 05:32 AM posted to uk.rec.audio
Stewart Pinkerton
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Default 52 dB any good?

On Thu, 27 Apr 2006 17:49:12 +0100, Chris Isbell
wrote:

On Thu, 27 Apr 2006 13:44:00 +0100, "Serge Auckland"
wrote:

If the signal strength is -52dBm into 75 ohms, then that's a voltage level
of 687uV which is a bit low.


My Sony ST-S311 tuner gives the signal strength in dBf, which I
believe is relative to one femtowatt (10E-15W). If my calculations are
correct, then 52dBf would equate to 109uV, which is not very good at
all.

The OP's manual should hopefully define the measurement units used.


The trouble here of course is that Keith is obsessed with
measurements. What really matters is how the signal *sounds*! Is it
clean, with no multipath distortion and no noticeable hiss? Then you
have enough signal strength. :-)

--

Stewart Pinkerton | Music is Art - Audio is Engineering