[Elecraft] K2 IF amp alignment

Wed Apr 23 16:35:01 2003

And it will get even "funner."  You are in for a wonderful experience.

Bruce - W8FU

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Paul Bartlett
Sent: Wednesday, April 23, 2003 12:08 PM
To: [email protected]
Subject: Fw: [Elecraft] K2 IF amp alignment

----- Original Message -----
From: "Paul Bartlett" <[email protected]>
To: "Eddy Avila" <[email protected]>
Sent: Wednesday, April 23, 2003 4:55 PM
Subject: Re: [Elecraft] K2 IF amp alignment

> Hah!
>
> It's working! Discernable note at -127 dbm into antenna socket. And it
> sounds like a radio when connected to lump of wire lobbed outside of
garage
>
> This is FUN!
>
> Paul M3CRQ K2#3363 SOC#529
>
> ----- Original Message -----
> From: "Eddy Avila" <[email protected]>
> To: <[email protected]>
> Sent: Wednesday, April 23, 2003 4:40 PM
> Subject: Re: [Elecraft] K2 IF amp alignment
>
>
> > I left on a key capacitor in the IF amp circuit AND a wrong cap in
the
> same
> > circuit as well!!! E G A D S!!! No wonder my receiver was numb in
the
> > being....73....ed
> >
> >
> >
> >
> >
> >
> > >From: "Paul Bartlett" <[email protected]>
> > >To: "Eddy Avila" <[email protected]>,<[email protected]>
> > >Subject: Re: [Elecraft] K2 IF amp alignment
> > >Date: Wed, 23 Apr 2003 16:22:14 +0100
> > >
> > >Aaahhhhh.
> > >
> > >T7. I was supposed to wind and fit that, I seem to have missed it.
> > >
> > >T5's wound and fitted but not ticked off. T7's ticked off and
missing
> from
> > >the board. Bugger.
> > >
> > >It's the gin....
> > >
> > >Oh well.
> > >
> > >Paul :-(
> > >
> > >----- Original Message -----
> > >From: "Eddy Avila" <[email protected]>
> > >To: <[email protected]>
> > >Sent: Wednesday, April 23, 2003 2:16 PM
> > >Subject: Re: [Elecraft] K2 IF amp alignment
> > >
> > >
> > > >
> > > > Hi Paul...I just went through this question with the guru's of
> Elecraft
> > >and
> > > > the reflector. Yes indeed, L34 is flat! The peak is subtle and
broad
> but
> > >on
> > > > my K2 SN3345 it makes some difference. I ended up using the
> Spectrogram
> > > > software to "see" the peak....I really recommend spending the
$25
for
> > >this
> > > > program...invaluable! As for not hearing the birdie at 7.000 you
won't
> > >hear
> > > > it if an antenna is connected because  the band noise masks the
> signal.
> > >Mine
> > > > is pretty strong so I'm guessing you probably do have a problem
in
the
> > > > receiver.
> > > >
> > > > All my problems, by-the-way, were self-inflicted....and they
were
> > >many!!!
> > >AS
> > > > suggested by Gary at Elecraft my most successful troubleshooting
tack
> > >was
> > >to
> > > > start from the beginning and check every installed component. I
found
> my
> > > > mistakes this way.
> > > >
> > > > 73...and good luck! ed
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > >From: "Paul Bartlett" <[email protected]>
> > > > >To: <[email protected]>,
> > ><[email protected]>,<[email protected]>,
> > > > ><[email protected]>
> > > > >Subject: [Elecraft] K2 IF amp alignment
> > > > >Date: Wed, 23 Apr 2003 10:53:38 +0100
> > > > >
> > > > >Hi Gang,
> > > > >
> > > > >I'm up to page 61 in the manual (IF amplifier alignment). I
could
> find
> > >no
> > > > >trace of the internally generated signal near 7000 kHz.
> > > > >
> > > > >I have the benefit of a rather nice Marconi sig-gen and stuffed
> 7.15000
> > >MHz
> > > > >into the antenna socket. The manual suggests -100 dbm but I
find
the
> > > > >recovered signal disappears to the point of inaudibility at
about
> > >-85dbm.
> > > > >
> > > > >The 40m bpf inductors peaked up nicely but tuning L34 was
pretty
> flat.
> > > > >
> > > > >Does this seem right or should I investigate further?
> > > > >
> > > > >Best,
> > > > >
> > > > >Paul M3CRQ
> > > > >
> > > > >
> > > > >_______________________________________________
> > > > >Elecraft mailing list: [email protected]
> > > > >You must be a list member to post to the list.
> > > > >Postings must be plain text (no HTML or attachments).
> > > > >See: http://mailman.qth.net/mailman/listinfo/elecraft
> > > > >Elecraft Web Page: http://www.elecraft.com
> > > >
> > > >
> > > >
_________________________________________________________________
> > > > Add photos to your e-mail with MSN 8. Get 2 months FREE*.
> > > > http://join.msn.com/?page=features/featuredemail
> > > >
> > > > _______________________________________________
> > > > Elecraft mailing list: [email protected]
> > > > You must be a list member to post to the list.
> > > > Postings must be plain text (no HTML or attachments).
> > > > See: http://mailman.qth.net/mailman/listinfo/elecraft
> > > > Elecraft Web Page: http://www.elecraft.com
> > > >
> > >
> >
> >
> > _________________________________________________________________
> > MSN 8 with e-mail virus protection service: 2 months FREE*
> > http://join.msn.com/?page=features/virus
> >
> >
>

_______________________________________________
Elecraft mailing list: [email protected]
You must be a list member to post to the list. 
Postings must be plain text (no HTML or attachments). 
See: http://mailman.qth.net/mailman/listinfo/elecraft
Elecraft Web Page: http://www.elecraft.com