[Amps] FT8 power with the KPA1500

[Jim]

I love it!


Thanks
73
Jim W7RY

On 7/8/2021 3:31 PM, Thomas Walsh wrote:
> Well if you read the ft8 manual, it suggested not running more than say 35 or 40w,
> this is (or was) a low power weak signal mode! With all you guys running legal limit
> it has become the channel 19 of the ham bands. Sure glad I'm proficient on CW!
> Where the real DX is..
> De W2CO
>
>
> On Jul 8, 2021, at 12:50, <john at kk9a.com> <john at kk9a.com> wrote:
>
>  From an amplifier heating standpoint it probably makes very little
> difference what power level you use with an Elecraft KPA1500. See the
> Elecraft post on efficiency in the link below. I am not an amp guru but I
> believe SPE Expert amps have different PA voltages which increases their
> lower power efficiency.
>
> http://mailman.qth.net/pipermail/elecraft/2018-August/259502.html
>
> 73,
> John KK9A
>
>
> Ron kh6dv wrote:
>
> How much power can I run on FT8/FT4 with my new KPA1500 ?
> A friend with the Expert amp limits his output to 1000 watts.
>
> Ron KH6DV
> Kaneohe Bay Hawaii
>
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