[Elecraft] [KPA1500] Input Power

[Dr. William J. Schmidt]

All of those popular devices have gain more than 15 dB... so there is a pad in the amp to keep the gain at 15 dB. One would think that a "tweak" will evolve to modify the pad (and possibly the firmware) to eliminate this bothersome limit. 


Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ
 
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Staunton, Illinois
 
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email:  bill at wjschmidt.com
 

> On May 11, 2017, at 4:49 PM, Ingo Meyer, DK3RED <mails at qrp4fun.de> wrote:
> 
> Hello Mike,
> 
>> Hi,  Did you get answer for AC input power demand?    VA or power factor?Â
> 
> No, only for the input power (see below), which I want to know.
> 
> 1500 watts output = 61.8 dBm --> 15 dB gain --> 46.8 dBm = 47.5 ... 48 watts input
> 
>>> The gain limit of 15 dB is set by the FCC. ...
> 
> 73/72 de Ingo, DK3RED - Don't forget: the fun is the power!
> www.qrp4fun.de - dk3red at qrp4fun.de
> 
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