KXPA100 DC current at 20 50 watts

[Jan-10]

Power readings here in Ypsilanti . . .Using the KX3/PX3/KXPA100 for
several years now AND enjoy it very much; including a keyboard into the
PX3 for some fun on CW too ~ but mostly use the Navy flame-proof key
with SKCC activity (# 6099T)

Here are my reading on the METERS on the SEC-1235 power supply  . . . a
good power supply . . .

At 5W       1.5A  and 14V        KX3 alone

At 10W    3.0A  and 14V        KX3 alone

At 20W    10A   and 14V        KX3 + KXPA100

At 50W    15A   and  14V      KX3 + KXPA100

AT 75 W   17A   and 14V      KX3 + KXPA100

At 100W  23A  and 14V       KX3 + KXPA100

Cheers, Jan  K1ND
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[John Oppenheimer]

Thank you Jan!

Also a thank you to the private direct reports.

I'm in a temporary limited shack condition. To KIS, using a K2/10 with a
battery. While sending an endless string of auto-keyer 10W CQs on 20M my
mind wondered to: what is the addition battery drain for 3 dB?

Testing a K3, the bias current for the 100W amplifier is about 5A. I
wondered what the KXPA100 bias current is? Based on the reported
numbers, it's about 7A.

There's been a bunch of list comments about the amazing K2. I agree!
Looking at the Elecraft shipping page, there's been a K2 run. Long live
the K2.

John KN5L

On 03/12/2018 07:56 AM, Jan wrote:
> At 10W    3.0A  and 14V        KX3 alone
>
> At 20W    10A   and 14V        KX3 + KXPA100
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[Mike Maloney]

Interesting readings.  Would have thought KXPA more efficient.   Is this into dummy load and what frequency was test?
73, Mike AC5P

    On Monday, March 12, 2018 7:57 AM, Jan <[hidden email]> wrote:
 

 Power readings here in Ypsilanti . . .Using the KX3/PX3/KXPA100 for
several years now AND enjoy it very much; including a keyboard into the
PX3 for some fun on CW too ~ but mostly use the Navy flame-proof key
with SKCC activity (# 6099T)

Here are my reading on the METERS on the SEC-1235 power supply  . . . a
good power supply . . .

At 5W       1.5A  and 14V        KX3 alone

At 10W    3.0A  and 14V        KX3 alone

At 20W    10A   and 14V        KX3 + KXPA100

At 50W    15A   and  14V      KX3 + KXPA100

AT 75 W   17A   and 14V      KX3 + KXPA100

At 100W  23A  and 14V       KX3 + KXPA100

Cheers, Jan  K1ND
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