[TenTec] Tennessee Dreamin'
Martin Ewing
martin at aa6e.net
Thu Aug 5 21:14:28 EDT 2004
Well, when I switch in 6 dB of (power) attenuation on my Orion, the
S-meter goes down by 1 S-unit. Decibels usually measure _power_
ratios. Of course, you're right that the S-meter is traditionally
driven by the AGC voltage, but the meter scale will be marked to show
receiver input power.
In the Orion, the S-meter is driven by a digital-to-analog converter, so
the meter will say whatever the firmware wants it to say.
73 - Martin
>Mike, the 6dB of difference in S meters is VOLTAGE difference measured in
>the AGC.
>
>The doubling of transmitter POWER is 3dB power.
>
>Confusing, isn't it?
>73
>Stuart
>K5KVH
>
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