[Elecraft] [Elecraft_K3] New from Elecraft: KPA1500 amplifier with built-in ATU, separate power supply

[Clay Autery]

Excellent point....  I look forward to deploying more/better copper!  :-)

______________________
Clay Autery, KY5G

On 4/21/2017 11:32 AM, Alan Bloom wrote:
> With 1500W of power, if the SWR is greater than 3:1 you may be
> exceeding the ratings of the feedline.  For example, Belden 9914 is
> rated at a maximum of 300 VRMS, which is 1800W with a 50-ohm feedline
> or only 600W with a 3:1 SWR.  At 30 MHz, RG-8/213 style coax is
> typically rated at 1500W with a 1:1 SWR.
>
> It's true that you can do more than that with low-duty-factor modes
> like CW and SSB, but if you are running much more than 3:1 SWR you may
> be in danger of damaging the feedline.
>
> Alan N1AL
>
>