[Elecraft] Re: Amplified Speakers for KX1 (and other rigs)

[Don Wilhelm]

Dave and all,

I can't imagine Gary getting it wrong, so I will attribute it to a typo ---
28.28 Vpp is required to produce 2 watts power - 25.28 will be only 1.6
watts.

BTW - for a 50 ohm load, an easy formula for power is (Vpp squared divided
by 400).  There are other variations, but it does save going through the
conversion to RMS with the accompaning SQR 2 factor.  It is often difficult
to remember when to use 1.414 or 0.707 (or even 2.828) for the conversion.

73,
Don W3FPR

----- Original Message -----
 >
> Here are some pk-pk RF voltages, and the corresponding power level across
a
> 50 ohm load:
>
> 1w      20vpp
> 2w      25.28Vpp
> 3w      34.64Vpp
> 4w      40Vpp
> 5w      44.7Vpp
>
> Hope this info helps somebody.
>