Filter alignment, once more with gusto!

[john-477]

About 9 months or so ago, I went through  the CW and SSB alignment process
using Spectrogram. I was able to get the software loaded and running, but I
could not get the filters aligned correctly using that method.

I then re-tried the method used in the manual, and was able to get
them aligned in such a fashion that as I stepped through progressively
tighter filter bandwidths, the signal stayed dead on in the passband, and
that I was listening where I was transmitting (with the associated
offset)... almost... I still had to manually offset the receiver with the RIT.

I'd like to attack this again this weekend and do it right. I keep reading
how easy it is to do this with Spectrogram, and I'm going to give it
another go, but where is the latest and greatest guide to filter alignment
these days?

Can someone point me to the docs outlining most clearly, the filter alignment
with Spectrogram?

Thanks for your patience!

John


---

Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.727 / Virus Database: 482 - Release Date: 7/26/04

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft   
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Don Wilhelm-3]

John,

For filter alignment with Spectrogram, you should be using a source of
broadband noise at the K2 antenna input (like the Elecraft N-Gen or
'dead-band' noise).  Attempting filter alignment with a single signal input
(such as from a signal generator) can lead to confusion and frustration.

If you haven't done so already, look at the K2 Dial Calibration article on
my website www.qsl.net/w3fpr.  The CAL FIL part is covered in depth as 'Step
3'.

The links provided can provide you with a lot of additional information
should you need or want it.

73,
Don W3FPR

----- Original Message -----

> ...snip...
> Can someone point me to the docs outlining most clearly, the filter
> alignment
> with Spectrogram?
>


_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft   
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Terry W9TRB]

W3FPR - Don Wilhelm wrote:

> John,
>
> For filter alignment with Spectrogram, you should be using a source of
> broadband noise at the K2 antenna input (like the Elecraft N-Gen or
> 'dead-band' noise).
>
>
Hello John,

    While you have Spectrogram going take a check of how you have L34
set.  I've been using my K2 for a long time now but recently saw a post
about the setting of L34 and I did hear a noticable difference when I
set L34 using an N-Gen and Spectrogram.
    My K2 worked fine but now it has better volume, which is always nice
to have even if I've worked aroung the continents without the extra
volume.  Try it...you'll like it.


73,

Terry  KA9TXE
_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft   
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com