Fwd: [Elecraft] Bandpass filter and IF amp adjustment question

JEAN-FRANCOIS MENARD jfmenard at mac.com
Sun Jan 8 09:42:44 EST 2006


Hi Tom,

It is fun to see and calculate an average of the compromise between  
160M and 80M we must do to adjust the filter properly.

But what do you mean about "usable" peak ?

Le 06-01-08 à 09:32, Tom Hammond a écrit :

> Jean-Francois:
>
> You will generally obtain a more definitive (and usable) peak, in  
> the adjustments if you set the K2 to 1W output and then align it in  
> TX mode.
>
> 73,
>
> Tom   N0SS
>
> At 07:56 AM 1/8/2006, you wrote:
>> I trying to adjut more precisely all my band pass filters and IF amp
>> and I would like to know if the method I use is good.
>>
>> I using my Palstar ZM-30 antenna analyzer that can generate and
>> transmit a tone at a specific desired frequency, the "VFO" feature.
>> So I put my ZM-30 near the K2 antenna connector to hear the tone in
>> my headphone. I turn off the AGC, RF gain set to mid range and AF
>> gain set around 9 o'clock.... After, I use my MM, set to ACrms, now
>> connected into the headphone jack of the K2.
>>
>> I figured that I can now read precisely on my MM all signal variation
>> that I can made when adjusting all filters including IF amp. I think
>> this way is more precise and more steady than reading POWER output on
>> a dummy load that could be less stable...
>>
>> Am I wrong or right or just paranoiac ??? ;-)
>>
>> Anyway, I'm just suggesting probably another way to adjust  
>> filters ???
>>
>> So, let me know...
>>
>> 73
>>
>> =============================================
>> JEAN-FRANÇOIS MÉNARD / VA2VYZ
>>
>> ELECRAFT KX1 #999, K2 #4130
>> FISTS #11896
>>
>> Pour visitez mon site Internet / To visit my website :
>>
>> http://homepage.mac.com/jfmenard
>> =============================================
>>
>>
>>
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=============================================
JEAN-FRANÇOIS MÉNARD / VA2VYZ

ELECRAFT KX1 #999, K2 #4130
FISTS #11896

Pour visitez mon site Internet / To visit my website :

http://homepage.mac.com/jfmenard
=============================================




=============================================
JEAN-FRANÇOIS MÉNARD / VA2VYZ

ELECRAFT KX1 #999, K2 #4130
FISTS #11896

Pour visitez mon site Internet / To visit my website :

http://homepage.mac.com/jfmenard
=============================================





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