[Elecraft] KPA1500 reduces power as it gets warmer?

Jim Brown jim at audiosystemsgroup.com
Sat Jun 4 15:34:41 EDT 2022


On 6/4/2022 6:52 AM, Kevin Robertson via Elecraft wrote:
> FT8 is a weak signal mode, designed for low power. 

As others have observed, that is WRONG.

Given its high duty cycle, you are asking for trouble if you operate 
your power amplifier in FT8 mode using your KPA1500 at anywhere near 
high power.

That's a different issue, and it IS wise to be cautious about LONG 
sessions at rated power, especially on 6M.

I burned out my final on my K2 at 15 watts on FT8.

That's because at 15W, the K2 is likely still on the driver, not the 
100W amp.

73, Jim K9YC



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