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The 33 amp statement applies only to the maximum current rating when using the amp on 120 VAC.? That's not its nominal draw, that is the maximum that the amp can tolerate.? Above 33 amps and the amplifier shuts down.? Taken from page 8 of the online manual in the LA-1K section:
?


As I said earlier, the rule-of-thumb for long-term viability of solid state amps is:? if the supply voltage is 120 VAC, one should limit RF output to 500 watts; if the supply voltage is 240 VAC, one can run a 1000-watt rated amp at 1000 watts RF output.

End of my end of the discussion.

73,
Kent
K9ZTV

On Tue, Dec 5, 2023 at 05:07 PM, Kent Trimble, K9ZTV wrote:

The 33 amp statement applies only to the maximum current rating when using the amp on 120 VAC.? That's not its nominal draw, that is the maximum that the amp can tolerate.? Above 33 amps and the amplifier shuts down.? Taken from page 8 of the online manual in the LA-1K section:

So glad to see that you have responded as to the identity of the manual in question, Kent.

1.? To be accurate, the "33 amp" information you referenced in the online manual is located on page 15, not page 8!? "OTHER MENU OPTIONS" is the heading of page 8.

2.? You stated "Above 33 amps and the amplifier shuts down."? Is that "33 amps" alternating current (AC) or direct current (DC), sir?

Btw when I asked Mark Ward of Palstar to provide me with a copy of the data sheet (i.e. OEM marketing material) for the power supply currently being installed in the production units of the LA-1K, Mr. Ward advised me in writing that Mr. Paul Hrivnak (chief engineer, president and CEO of Palstar) stating that "no information will be provided on the P/S type and specs sheet."

73
Ray
KJ5MI

Kent K9ZTV, so sorry in my post yesterday /g/la1k/message/1474 I neglected to address the first two (2) sentences of your post, stating that "The 33 amp statement applies only to the maximum current rating when using the amp on 120 VAC.? That's not its nominal draw, that is the maximum that the amp can tolerate."

With your two sentences (above) taken in context... If you were referring to the inrush current of the LA-1K power supply in question, during the initial power-up sequences of the LA-1K amplifier, I'd think you are close to being accurate in your assessment.

Still, Kent, please kindly address the question I raised in my post yesterday /g/la1k/message/1474 as to you stating that?"Above 33 amps and the amplifier shuts down."

Is that "33 amps" alternating current (AC) or direct current (DC), sir?

73
Ray
KJ5MI
PS - Hey, that isn't a trick question at all, sir, you have a fifty-fifty chance of answering it correctly.

On Thu, Dec 7, 2023 at 08:46 AM, tuneupmagic (null) wrote:

Still, Kent, please kindly address the question I raised in my post yesterday /g/la1k/message/1474 as to you stating that?"Above 33 amps and the amplifier shuts down."

Is that "33 amps" alternating current (AC) or direct current (DC), sir?

Hey Kent K9ZTV,

My bad.? If I had read the 4-Dec-2023 post /g/la1k/message/1469 by Claus (AE0S) all the way to end of his post, I wouldn't have wasted your time yesterday asking you the question: Is that "33 amps" alternating current (AC) or direct current (DC), sir?

So, Kent, please read the sentence just before the final sentence in Claus' post /g/la1k/message/1469 I am sure you can figure out for yourself the correct answer to my rhetorical question, sir.

73
Ray
KJ5MI