Posted by
JEAN-FRANCOIS MENARD-2 on
Jul 16, 2004; 1:57pm
URL: http://elecraft.85.s1.nabble.com/K2-transmitter-alignment-need-help-tp368826p368827.html
Thanks,
I now understand how the K2 react when tuning. But, I was suspecting
something, because I found that my power output seems to be more lower
that is suppose to be. Correct me if i'm wrong, but when I test the
output power, U use the DL1 dummy load, I set my K2, for example at
10W, and push the tune button. While I have my DMM meter set to DC
connected to the two tips on my dummy load, I read the vDC. After I
calculate V * V / 50 omhs, I also check that the dummy load I built is
effectively 50 ohm.
And the result are really lower that is suppose to be. Am I doing
something wrong, I guess ? ;-)
Thanks for your patience....
Le 04-07-16, à 01:40, Tom Hammond a écrit :
> Jean-Francois:
>
>> In alignment section 3, on page 75, the first step of the 40m
>> alignment, I can experiment something strange. Ajusting my power at
>> 2W like in manual, when I press the "TUNE" button and adjust L1 and
>> L2 for there maximum watt peak, I can see that after the ajusment, if
>> I press "TUNE" butto to test the alignment a few times, I can see
>> that the watt meter do not indicate always the same value each
>> time.... sometimes 1.9, sometimes 3.0...
>>
>> Am I missing something ???
>
> When you are in TUNE mode, the ALC does not activate. Therefore, while
> you are adjusting the various controls you CAN obtain more power
> output than the POWER setting is set for... for instance, if you have
> the POWER control set to 2W and you are adjusting the capacitors or
> inductors for max. power output, you may be able to obtain 3-4 W
> output. BUT, when you exit the TUNE mode and then go back to TUNE
> again, the ALC should then limit the power to 2W unless you make
> another adjustment to the C or L.
>
> This is normal action for the K2. In fact, when you are adjusting C
> and L for max. output, if you find that you are getting much higher
> power than you want to get at that point, just exit TUNE and re-enter
> it and the power will again be back at a lower value. Wen you exit
> TUNE and operate normally, the ALC will control max. power output
> based upon the POWER level you have selected.
>
> 73,
>
> Tom Hammond N0SS
>
===============================================
Jean-François Ménard / VA2VYZ
[hidden email]
Club d'Astronomie Amateur de Sherbrooke
Club Radio Amateur de l'Estrie
Mon site web personnel :
http://homepage.mac.com/jfmenard===============================================
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