[Elecraft] K3 tuning power question

Neil Martinsen-Burrell neilmartinsenburrell at gmail.com
Sat Jan 17 21:41:32 EST 2015


Would the same reasoning apply to the K2/100 as well? I have recently
acquired one and would like to take good care of the final transistors
(after a scary experience of trying to test power output while using the
wrong antenna connector). I know that 20W is the default with the tune
button, but one could then adjust it with the power knob.

-Neil N0FN

On Sat, Jan 17, 2015 at 10:06 AM, Don Wilhelm <w3fpr at embarqmail.com> wrote:

> Dick,
>
> It is easier on the K3 to tune at 15 or 20 watts.
> Reason -- at 10 watts, only the low power PA is active and it will be
> operating near the upper end of its range.
> Increasing the power activates the 100 watt amp and at 15 or 20 watts,
> everything is loafing along at much less than its full output.
>
> 73,
> Don W3FPR
>
> On 1/17/2015 10:00 AM, Richard Fjeld wrote:
>
>> I want to verify my understanding. In the interest of protecting the
>> output transistor(s) against a mishap in one's antenna system, would it be
>> better to tune at 10 watts (finals off) or at 15 watts (finals on)?
>>   Or is the driver so well protected that it doesn't matter?
>>
>>
>>
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