[TowerTalk] perspective

[Brian Alsop]

Examining the TS850 specs, S1 kicks in at 1 microvolt.  These are LED
bar s meters.  I don't know how the threshold is set.  However, I dug
into the manual and the S-Meter is adjusted so that the S1 LED just
comes on at 1 microvolt.  Thus you have the entire range between 1
microvolt and zero microvolts for potential "S0" signals.  That's an
infinite number of DB's.

On 10 and 15 meters, I've seen figures like  <.2 microvolts being quiet
location noise levels.  If it is 0.1 microvolt, then there is a 10 db
range of "S0" signals one can hear.

The other thing -- all S meters lie.  "SO" on the Kenwood is by the
above calibration just under one microvolt.  It may be anything on other
Rx's
You can change it to anything you want.

73 de Brian/K3KO

David Jordan wrote:
> 
> YES Brian,
> 
> I have no noise level in my country place...and hear most stations as if
> they were "S"9.  But my question was...how many db above the noise floor
> but still under "S" 0.  Obviously, there is significant signal strength
> that lies in between.  I just wonder if there is enough between the
> noise floor of the receiver circuits and "S" 0 to be measured in db.
> 
> dave

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