[Elecraft] KX2 heatsinks for CW-only ops?

Julia Tuttle julia at juliatuttle.net
Wed Jul 16 16:02:55 EDT 2025


Oh, hm, maybe I'm thinking of WSPR or another mode; I know one of them was
30 seconds on, 30 seconds off.

In any case, though, modes that modulate at 100% duty cycle during the
transmit portion are still going to get the rig hotter than CW will.

But, yes, agree, just get a heatsink. Worst case, your finals are extra
comfy.

73,

Julie

On Wed, Jul 16, 2025, 15:55 Rick Bates, nk7i <rick.nk7i at gmail.com> wrote:

> 13.5 seconds key down, twice a minute, or 7.5 seconds four times a minute
> about 47% duty cycle; just to be clear.
>
> Add the heatsinks, they may help and they won't hurt a thing.
>
> 73,
> Rick nk7i
>
>
> On 7/16/2025 12:44 PM, Julia Tuttle via Elecraft wrote:
>
> 3. Additional heatsinking is necessary only to avoid foldback while
> operating digital modes like FT8 that transmit at 100% duty cycle for 30
> seconds straight.
>
>


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