[Elecraft] Product Idea - 25 Watt PA for the K3

[briancom]

Have you done the RF exposure calcs?  I have the same issues.  It turns out that on all HF bands, it is difficult to exceed the limits at 100 watts.  Just 5 to 10 ft from the antenna provides enough distance.
73 de Brian K3KO


Sent from my iPad

> On Feb 22, 2017, at 10:06 PM, Aaron Lee <alee at aaronosaur.us> wrote:
> 
> I'm dealing with indoor and hidden antennas for the next few years, 25
> watts makes it much easier to stay within uncontrolled exposure limits
> than 100 watts. 25 watts is much more appropriate for my confined urban
> environment. It's also enough to have fun with the CW and digital modes
> I enjoy. I get nervous pushing my KX3 past 5 watts some of the 100% duty
> cycle digital modes. However, I would feel much more comfortable with a
> desktop rig that could push 25 watts all day long.*
> 
> Aaron Lee
> AC9OH
> 
> * Right now I'm debating between a 100 watt rig and trying to keep my
> fingers off of the power knob or saving my money in hopes that something
> better is on the market after I move.
> 
>> On Wed, Feb 22, 2017, at 03:25 PM, Harry Yingst via Elecraft wrote:
>> 
>> Seeing how the KPA- 500 tends to need less than 25 watts to drive it to
>> full output (500 watts) It got me thinking about a 25 watt PA Option. 
>> Would it be possible to replace the existing 10 watt PA board with a 25
>> watt PA board that would use a larger heatsink instead of the case.
>> 
>> If the stock Filters and Relays can handle the 25 watts it would seem
>> that it would be a more inexpensive option for those who plan on going
>> with the KPA500.
>> 
>> Just a thought...
>> 
>> 
>> 
>> 
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to alee at aaronosaur.us
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to alsopb at comcast.net