WiNRADiO G315 VHF/UHF Receiver
56
S-meter
The WiNRADiO G315 receiver is equipped with a very sensitive and selective
Signal Strength Meter
(
S-meter
) which makes it possible to measure peak or
RMS signal level dBm, µV or S-units, within the IF filter passband. The
measurement units are selected by appropriately marked buttons at the
bottom of the display.
The
S-meter
also shows the currently selected value of the squelch (the red
section at the bottom side of the scale). When the signal strength falls under
the squelch level (i.e. the needle falls in the red region and turns red also), the
receiver audio will be muted.
The squelch value is always indicated in dBm (even if the signal strength is
displayed in S-units or microvolts).
The
Peak
and
RMS
buttons select between peak and RMS values (calibrated
for sine wave modulation).
The
S-meter
is very selective, and acts only upon signals within the actually
selected IF bandwidth (shaded area in the real-time spectrum display). The
Range
button splits the
S-meter
“needle” into two, and makes it possible to
observe the dynamic range of the input signal (i.e. the minimum and the
maximum values within the signal bandwidth):
