[Elecraft] Backward CW?

Don Wilhelm w3fpr at earthlink.net
Wed Apr 11 11:00:59 EDT 2007


Tom,

I believe you asked the right question.

Assuming that your filters are set so you do hear a signal at the 
sidetone pitch on both CW and CWr, do the following - (if not, you 
should do the whole filter setting task - see the 3rd paragraph below).

To see if your filters are set to the correct side of the carrier, you 
should enter the menu for CAL FIL, then tap the BAND- button. You can 
see the DAC values for both CW and CWr - for each of the 4 filters, the 
DAC value for CW should be lower than the one for CWr.  If that is true, 
then you have the BFOs set to the correct sideband.  If you have the 
counter probe installed in TP2, you can read the actual BFO frequency by 
tapping the DISPLAY button.

If you find the BFOs on the wrong sideband, you must open the K2 and 
connect the K2 frequency counter probe to TP2 to change the settings. 
The K2 manual contains information for entering the menu and the related 
'button-tap/hold' sequences to get to the CAL FIL menu - if you are not 
familiar with that part of the task, please review that portion of the 
manual first (if you built your K2 you already know how to do it).

Should your filters/BFOs need changed, I recommend you use Spectrogram 
to give a visual display of your filter passbands.  Spectrogram version 
5 (the last freeware version) and how to use it info is available at Tom 
Hammond's website www.n0ss.net and if you want to accomplish a full K2 
dial calibration job while you are in the process, check out my website 
http://w3fpr.qrpradio.com article on K2 Dial Calibration.  If you do not 
wish to do the full task, you can simply set the filters to the settings 
indicated in the KSB2 manual (if you have that option installed) or in 
the K2 manual if the KSB2 is absent.

It is not difficult, I am just trying to be complete here with some 
consideration for brevity.

73,
Don W3FPR


KJ3D wrote:
>  Well here comes the probably-stupid-question-of-the-day:
> 
> After nearly 90 minutes on the NAQCC sprint last night - sending and
> answering dozens of calls, some from pretty strong signals - without a
> single contact, I gotta wonder if the problem is on my end.
> 
> How can I tell if my carrier is on the correct side of zero-beat?  
> 
> Then how do I fix it?  
> 
> Have I even asked the right question?
> 
> Thanks es 73,
> 
> Tom, kj3d at comcast.net


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