[Elecraft] KX1 Filter Explanation for Dummies

[Burke Jones]

Okay, that is exactly what I was looking for.  I might need to revist the
manual and the part about setting the sidetone frequency.  I can't remember
what I did.....

Thanks!

Burke
http://N0HYD.com <http://n0hyd.com/>

On Sat, Jul 11, 2009 at 11:08 PM, Leigh L. Klotz, Jr WA5ZNU <
Leigh at wa5znu.org> wrote:

> Burke,
> There are two issues:
>
> 1. When you set the sidetone frequency in the KX1 menus, you are also
> choosing the offset at which you hear received signals.
> So if you set it to 600 Hz, you'll be right on frequency with the other
> station when the signal you hear is a 600 Hz tone.
> You can match this tone by ear by goign back to the menu to StP or StL
> (better since it doesn't accidently change StP) and listening for the same
> pitch, within about 10 Hz. Once you get on the same frequency, turning the
> filter down to about 1 Khz will cut out most of the QRM and QRN and will
> give you a pleasant listening experience.  If you're off frequency, the
> received signal will fall outside the filter passband and you'll be treating
> it as you would a QRM or off-frequency station, and it will be attentuated.
>
> 2. If you turn the filter below 1 Khz, and more prominently, below 500 Hz,
> the center frequency of the filter itself shifts down a bit, so you may need
> to re-tune slightly to get the signal back to full strength.  Unfortunately,
> if you do this, you'll also be shifting your transmit frequency, so you can
> use the RIT feature of the KX1 just to shift the received frequency and
> leave your transmit frequency alone.  You probably won't need to do this
> unless you need to crank the filter way down, as in a contest, or with a
> very noisy band.  So you can safely ignore this for now and use the filter
> at about 1 Khz until you feel the need to learn more.
>
> Does this answer your question, or do you have a different issue that I've
> misunderstood?
>
> Leigh/WA5ZNU
> KX1 #712
>
>>  Okay, so now that I am actually using my KX-1, I need some help.  I am
>> really a newbie when it comes to this stuff.
>>
>> Can someone please give me an explanation (at a basic level) of how you
>> are
>> actually supposed to use the filter on the KX-1?
>>
>> If I am listening to a signal, and then turn the filter, I seem to lose
>> the
>> signal.  Is this because I am not tuned exactly to that signal?
>>
>> Thanks for being patient, someday it will all make sense.
>>
>> Burke Jones
>> N0HYD
>> http://N0HYD.com <http://n0hyd.com/> <http://n0hyd.com/>
>> Olathe, KS
>> _
>>
>
>