[Elecraft] KPA1500 on AM

[donovanf at erols.com]

Morgan, 


The amplifier will actually be outputting its full rated 1500 watts 
PEP but because of the 375 watt carrier the heat dissipation 
in the amplifier and power supply may be to higher than 
they were ever designed or tested for. 


If I were you I'd limit the KPA1500 carrier output power to about 
200 watts, that should be safe. 


73 
Frank 
W3LPL 

----- Original Message -----

From: "Morgan Bailey" <mbaileycrna at gmail.com> 
To: "Louis Fiore" <ltfiore at aol.com>, Elecraft at mailman.qth.net 
Sent: Thursday, February 4, 2021 7:22:13 PM 
Subject: Re: [Elecraft] KPA1500 on AM 

The max that you can legally run is 375 watts carrier. That on AM will get 
you 1500 watts PEP. YMMV. I do not know the spex on the 1500 but that may 
put you in the ballpark. Understanding linearity, for AM is covered here: 

https://www.w8ji.com/am_linear_amplifiers.htm 

If you want to run AM, this is where I would start reading. 

73, Morgan NJ8M 

BS + MS + $2.98 = COFFEE 
Real Life Experience = Priceless, says the man who set his back yard on 
fire with a bread board tuner loading a 160 meter inverted L with 1000 
watts. LOL 


On Thu, Feb 4, 2021 at 1:06 PM Louis Fiore via Elecraft < 
elecraft at mailman.qth.net> wrote: 

> Good afternoon, 
> 
> Does anyone have any tips on running the KPA1500 amp in the AM mode? 
> 
> 73, Lou W2LTF 
> 
> H 973-726-8300 
> C 917-270-5421 
> 
> Sent from my iPhone 
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