[Boatanchors] Using a SG-230 tuner on AM

[rbethman]

John,

You are at it once again.

Where is your reference?  I've even supplied the formula that the author 
and his editors used to derive the table.  I've given three separate 
editions.  The third edition is the 21st by the way.

So you go off on a tangent that is saying you are the only one correct.

Please stay out of a topic that doesn't concern you.  You don't even 
belong to the hobby and NEVER cite your references.

Bob - N0DGN

J. Forster wrote:
> A table that shows 0 dBm = .006 Watts is WRONG.
>
> dB is a power RATIO and is dimensionless. It is NOT Volts, Amps, Watts or
> any other physical unit (except when measuring sound pressure level, where
> a reference level is assumed by convention).
>
> dBm is a power LEVEL referred to 1 milliWatt
> dBW is a power LEVEL referred to 1 Watt
> dBM is a power LEVEL referred to 1 MegaWatt
>
> To say "my transmitter puts out +13 dB is meaningless"
> To say it puts out +13 dBW has meaning, it equals 20 Watts.
>
> To say "my antenna has +10 dBm of gain" is meaningless.
> To say "my antenna has +10 dB of gain" makes sense.
>
> So, a station that has a transmitter output of +13 dBW and an antenna with
> +10 dB of gain, will put out an EIRP of +23 dBW or 200 Watts. (A big RADAR
> can put out EIRPs of many dBMs)
>
> -John
>