[Elecraft] [K3] K3 Power Output

[hb9ari]

Ok! It's in the "to do" list!

73,
Rudolf

Alexandr Kobranov wrote:
> Absolutely!
> One thing is to have uniformity of power out (this is what we need as 
> a final), the other is to know levels of AF out per tone from the 
> sound card and then characteristic of the rest of line.
>
> Let me know your results, my setting was very fast and without any 
> remarks so no table of tone/af level/power out level per WSJTx mode 
> done yet. Will try in some spare time and we can compare :-)
>
> 73!
> L. -dst-
>
> hb9ari napsal(a):
>> Hi Lexa,
>>
>> Very good info, i will do some tests this week-end.
>>
>> At the same time, a verification of the audio level
>> response (WSJT/Sound card) should be a good precaution...
>>
>> 73 QRO de Rudolf, HB9ARI
>>
>> Alexandr Kobranov wrote:
>>> Hi Markus,
>>> you prabably know but maybe good for the others trying WSJT/WSPR:
>>> You can try very simply power levels per tone by using WSJT menu 
>>> Setup - Generate messages for test tones.
>>> Then you have @A - @D and @1000 and @2000 in TX1 - TX6 windows
>>> You can test each tone separately and try to adjust level of TX EQ 
>>> to obtain the best distribution.
>>> Yes, there are differencies, very big sometimes.
>>> Maybe later when TX EQ will be -per mode- saved and (if any chance) 
>>> user selected  frq of setting point possible there will be better 
>>> game with it.
>>>
>>> Good luck,
>>> 73!
>>> Lexa, ok1dst
>>> K3/10 #727
>>>
>>>
>>>
>>> hb9brj napsal(a):
>>>  
>>>> hb9ari wrote:
>>>>    
>>>>> I work essentially with JT65A mode; as this mode
>>>>> is a single tone mode, i've set the modulation
>>>>> level just before full ALC and power to 50W
>>>>> (for DX only...). At the beginning of a
>>>>> JT65A transmit sequence, the power start
>>>>> at ~ 25W and go up to ~ 48W in 3 to 5 sec.
>>>>>
>>>>>       
>>>> I'm active in WSPR mode, which is a single tone as well.
>>>> Mode = "DATA A", ALC = 4 bars, PWR = 5W.
>>>> An external wattmeter shows an absolutely steady power throughout 
>>>> the entire
>>>> 2-minute TX cycle.
>>>> The bottom cover just underneath the LPA gets pretty hot, but at 5W 
>>>> the KPA3
>>>> is bypassed.
>>>> Will run a test at higher power to see whether or not it makes a 
>>>> difference.
>>>>
>>>> 73, Markus HB9BRJ
>>>>     
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>