[Elecraft] Field Day experience with K3

[Wayne Burdick]

If your supply voltage is too low for a given application, I suggest  
dropping TX power. In the case of PSK31, which works well at very low  
S/N ratios, I suspect 50 W would have worked just as well as 100 W for  
99% of contacts.

73,
Wayne
N6KR


On Jun 28, 2012, at 11:54 AM, Elecraft K3 wrote:

> I would not want to be running an IMD sensitive mode like PSK with  
> 11 V.
>
> We came close at our location a few times between generator runs -  
> 11.3 V  or so and my outboard IMD meter still showed an acceptable  
> signal - IMD -25db or less.
>
> 73 de Eric, KG6MZS
>
> On Jun 28, 2012, at 11:44 AM, Wayne Burdick wrote:
>
>> The K3/100 needs 11 V to make 100 W on most bands (and higher on some
>> bands), but it should not shut down completely until you hit that 9.0
>> V level. The radio will automatically reduce power (or drop  
>> completely
>> out of QRO mode, bypassing the KPA3) as required.