[Elecraft] K3 power reduction after using TEST mode

[Mike K2MK]

Hi Guy:

Additional information.

Firmware MCU 3.79, DSP 2.54
No antenna involved. Dummy load only.
VOX on (not QSK)
CWT on
TEXT DEC off
Internal keyer used, set to 23 WPM but other speeds do it too
External paddle (non-iambic).
CONFIG:CW IAMB.......A
CONFIG:CW PADL......tip=dot
CONFIG:CW WGHT....1.05

73,
Mike K2MK




Guy, K2AV wrote:
> 
> Firmware & DSP versions?
> 
> On Tue, Apr 13, 2010 at 10:40 AM, Mike K2MK <k2mk at comcast.net> wrote:
>>
>> My fist has been getting rusty so I've begun practicing sending CW by
>> putting
>> the K3 into TEST mode and sending paragraphs of text. I discovered that
>> when
>> going back to normal TX mode, the power output was drastically reduced.
>> At
>> first I thought I was accidentally turning the power knob to adjust
>> keying
>> speed so today I conducted a controlled experiment.
>>
>> I set the K3 keying speed to 23 WPM and did not readjust it. I found that
>> it
>> is necessary to send CW in TEST mode for about 5 minutes for the
>> condition
>> to occur. I tried it on 3 bands at 3 different power levels. In each case
>> I
>> noted the power before going into TEST mode and then after 5 minutes I
>> noted
>> the power after exiting TEST mode. The power was read on my PowerMaster
>> meter into a dummy load but a touch of the K3 POWER knob confirmed that
>> the
>> K3 and the PowerMaster agreed with each other.
>>
>> Here's what I found.
>>
>> 17 meters: power reduced from 29 watts to 5.2 watts
>> 20 meters: power reduced from 24 watts to 5.1 watts
>> 30 meters: power reduced from 100 watts to 5.0 watts
>>
>> Give it a try.
>>
>> 73,
>> Mike K2MK
>> --
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