[Elecraft] KPA-1500 Efficiency

[Paul Baldock]

Are you saying it took exactly 40W input on each band to produce 1500W out..

I find the gain of the amp very different from band to band. For 
example on 80M mine takes 32W to produce 1500W into a dummy load, and 
15M it takes 47W to produce 1500W in to a dummy load. That's a 
variation of 1.7dB, not very flat.

Also as others have reported as the amp warms up the gain decreases a 
little (requires a bit more drive).

- Paul KW7Y

At 07:40 PM 8/15/2018, you wrote:
>Just curious what other users of the KPA-1500 see as the efficiency 
>reported by the KPA-1500 utility app.
>
>The following efficiencies are being report by my KPA-1500 utility 
>app by band into a dummy load running 40 watts input and 1500 watts output:
>
>80M CW:   61%
>80M SSB:  64%
>40M CW:   54%
>40M SSB:  59%
>20M CW:   52%
>20M SSB:  52%
>17M CW:   55%
>15M CW:   64%
>15M SSB:  62%
>12M CW:   68%
>10M CW:   56%
>10M SSB:  58%
>
>Does this compare favorably with other KPA-1500 owners?
>
>Charles  K5UA
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