[Boatanchors] Using a SG-230 tuner on AM

[J. Forster]

The 3,6,9 dB values are approximations:

The higher accuracy figures are:

 2x = 3.0103 dB    [10*Log(2) ]
 4x = 6.0206 dB    [10*Log(4) ]
 8x = 9.0309 dB    [10*Log(8) ]
10x = 10.000 dB        [10*Log(10)]

-John

==============





> You are trying to tell me the reference does not apply at the wattage
> being discussed.
>
> A reference point MUST be specified when beginning a table.
>
> The fact that the Author began at 0.006 Watts isn't really relevant.
>
> If the power is doubled, it IS a 3dB increase, no matter where you
> begin.  To go from 100W to 200W is a 3dB increase in power.  if you go
> from 100W to 400W it is a 6dB increase in power.
>
> Getting hung up on the reference point isn't the issue.  That is where
> it was chosen to begin the table, and I've also pulled out "The Radio
> Engineer's Handbook", Terman, 1943, page 1.
>
> Guess what?  Same results.  Actually, very slight difference as they
> used a slide rule in that time frame.  So 3.0 dB increase in power shows
> as 1.99 times the original power.
>
> Bob - N0DGN
>
> Gary Schafer wrote:
>> Then why are you arguing about and using .006 watts as a reference when
>> everyone else was talking about a 100 watt transmitter?
>>
>>
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