[Elecraft] K2 RECEIVER: WHERE ARE THE SIGNALS?

[Manuel Wilches]

Gentlemen: the signals are here!

I had my 160 plug-in Rework Eliminator plugged-in backwards... (my apologies 
to Gary and Ken!) I had looked at all headers so many times and it never 
looked wrong to me until Don wrote the word "position" in his message. The 
good part is, indeed these Rework Eliminators do their job. Now I can go 
ahead and install all options with no fear.

Thank you very much indeed Don, Bob, Jim and José for your words of wisdom 
and guidance.
I woke up this morning, saw your messages, went to the radio, change de the 
Header's position and my faithful GP gave me a lot of signals, and strong 
ones too, immediately. What a relief!

Because of the header's position shall I do the whole calibration/alignment 
step-by-step  (page 60 to page 64) procedure of PART II all over again? I am 
also concerned about final adjustments of L34 and L1+L2 as I have to rely on 
regular noise to do that. No signal generator here. The 7000 khz weak 
internally-generated signal is there.

By the way: my good old childhood friend, José - CT1AOZ, knows my 
inabilities to deal with components and soldering irons since we were high 
school kids and he has been very worried about me hi hi
Relax Zé...the K2 is coming on with a little help from my friends...Be proud 
old chap.

73
Manuel
LU5OM
CT4IK
----- Original Message ----- 
From: "J ALBU" <ct1aoz at netvisao.pt>
To: "Manuel Wilches" <manuelwilches at arnet.com.ar>; 
<elecraft at mailman.qth.net>
Sent: Saturday, February 25, 2006 4:26 AM
Subject: Re: [Elecraft] K2 RECEIVER: WHERE ARE THE SIGNALS?


> Hi Manuel
>
> Look and re-look for an
> incorrectly placed component (or a component with improper orientation) 
> this is the most common problem
> Now in Portuguese...
> Ve os componentes pois o mais frequente é teres trocado a posição 
> (transistors o contrário ou os diodos).
>
> Good luck Manel I'm very proud with you my good friend
> GOD bless you
>
> 73 de Jose CT1AOZ
>
>
> ----- Original Message ----- 
> From: "Manuel Wilches" <manuelwilches at arnet.com.ar>
> To: <elecraft at mailman.qth.net>
> Sent: Saturday, February 25, 2006 3:01 AM
> Subject: [Elecraft] K2 RECEIVER: WHERE ARE THE SIGNALS?
>
>
>> Greetings from Argentina.
>> I am building K2 # 5310
>> I have purchased all Rework Eliminators (they were a breeze to install, 
>> by the way and are very neat indeed!) and I have all K2 options except 60 
>> meters, i.e. 160mtrs - DSP - NB - K2/100 - SSB.
>>
>> I have completed part II of the RF board and the "Alignment and Test, 
>> Part II". All values tested, calibrations, voltage measurements etc. were 
>> within the specs indicated in the K2 manual. During assembly of the FP 
>> and CB all tests required were also on target. I have built and used the 
>> Frq. probe, the RF probe and the N0SS probe. I do not have a signal 
>> generator or any other instrumentation. I have a DMM. All my Rework 
>> Eliminators are plugged in.
>>
>> The problem: the receiver has full noise (as though it worked ok) but 
>> when I connect an antenna (40 meters GP) I do not hear any signals. I 
>> heard a CP4 perhaps RST 519. Extremely weak.
>>
>> I tried N0SS's probe and I pick up a strong signal through all test 
>> points up to C225. I have no signal pick up there nor at C226 or C227. I 
>> did not check W6 and W1 because I did not install those jumpers (I 
>> followed the Rework Eliminators instructions that call for other steps). 
>> I do not know if there is an alternative test point for those. I have 
>> been through the usual checks for bad solders etc.
>>
>> I have used the proper solder and a controlled temp soldering station.
>>
>> I would very much appreciate your assistance and guidance. I have had the 
>> K2 on for hours now (playing with the keyer) and there has been no 
>> change. It looks great, that is for sure!
>>
>> Thank you very much
>> 73
>>
>> Manuel
>> LU5OM
>> CT4IK
>> K2 # 5310
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>
>
>
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