K3 CW set up

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K3 CW set up

bicyclepeddlers@netzero.net
How aie you K3 folks setting it up for QRP cw such as filters, etc?
or, i.e. is the basic unit enough or do you do some add-ons?
Don't worry, not going to order yet but maybe have one by next fall.  Too much fun with K1s and getting my cw into shape right now.
TU, 82,
John     N0LT
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Re: K3 CW set up

Julian, G4ILO
Since the xtal filters in the K3 are roofing filters I'm going with
the stock 2.7kHz filter, and just adding wider filters for 10m FM and
broadcast AM reception. I'm betting that the DSP will provide all the
narrow filtering I'll need.

--
Julian, G4ILO K2 s/n: 392  K3 s/n: ???
G4ILO's Shack: www.g4ilo.com
Zerobeat Ham Forums: www.zerobeat.net/smf


On 11/6/07, [hidden email] <[hidden email]> wrote:

> How aie you K3 folks setting it up for QRP cw such as filters, etc?
> or, i.e. is the basic unit enough or do you do some add-ons?
> Don't worry, not going to order yet but maybe have one by next fall.  Too much fun with K1s and getting my cw into shape right now.
> TU, 82,
> John     N0LT
> _______________________________________________
> Elecraft mailing list
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Julian, G4ILO. K2 #392  K3 #222 KX3 #110
* G4ILO's Shack - http://www.g4ilo.com
* KComm - http://www.g4ilo.com/kcomm.html
* KTune - http://www.g4ilo.com/ktune.html
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Re: K3 CW set up

Greg - AB7R
In reply to this post by bicyclepeddlers@netzero.net
John,

I started back up with the QRP Fox Hunts on 40M.  Sometimes there are strong sigs near where
the packs are running so I use the 500 Hz filter.  I also have the 200 Hz installed so if I
really narrow the BW it comes on automatically.  But its probably not needed unless there are
S9+40 sigs very close to the operating frequency.

I would recommend the 500 Hz roofing filter for best performance if you are only looking for
one extra roofing filter in addition to the 2.7 kHz that comes with the K3.

-------------------------
73,
Greg - AB7R
Whidbey Island WA
NA-065
K3#0009

On Tue Nov  6  8:01 , "[hidden email]"  sent:

>How aie you K3 folks setting it up for QRP cw such as filters, etc?
>or, i.e. is the basic unit enough or do you do some add-ons?
>Don't worry, not going to order yet but maybe have one by next fall.  Too much fun with K1s
and getting my cw into shape right now.

>TU, 82,
>John     N0LT
>_______________________________________________
>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


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Re: K3 CW set up

Bob Cunnings NW8L
I've settled on the 1 kHz roofing filter to start out with since it
will allow a more expansive "context" when using the Dual-passband CW
filter feature, something I'm really interested in.

Bob NW8L

On 11/6/07, Greg - AB7R <[hidden email]> wrote:

> John,
>
> I started back up with the QRP Fox Hunts on 40M.  Sometimes there are strong sigs near where
> the packs are running so I use the 500 Hz filter.  I also have the 200 Hz installed so if I
> really narrow the BW it comes on automatically.  But its probably not needed unless there are
> S9+40 sigs very close to the operating frequency.
>
> I would recommend the 500 Hz roofing filter for best performance if you are only looking for
> one extra roofing filter in addition to the 2.7 kHz that comes with the K3.
>
> -------------------------
> 73,
> Greg - AB7R
> Whidbey Island WA
> NA-065
> K3#0009
>
> On Tue Nov  6  8:01 , "[hidden email]"  sent:
>
> >How aie you K3 folks setting it up for QRP cw such as filters, etc?
> >or, i.e. is the basic unit enough or do you do some add-ons?
> >Don't worry, not going to order yet but maybe have one by next fall.  Too much fun with K1s
> and getting my cw into shape right now.
> >TU, 82,
> >John     N0LT
> >_______________________________________________
> >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
>
>
> _______________________________________________
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Re: K3 CW set up

Jeff Stai

I set up my K3 for RTTY and CW especially with the 8poles and 400 and 250. It depends what you want
for CW - do you want to isolate signals or is a wider passband your normal procedure? I can tell you
that the DSP does a very nice job narrowing the BW to isolate signals down to 100 or even 50 Hz
(nice for isolating the response of a weak VO1 from the QRM of calling stations, for example.)

But when you cross from 450 to 400 or 300 to 250 and the narrower roofing filter kicks in it is like
a brick wall slams down. You really can hear the difference. Reducing interference from close
stations is imperative in RTTY, I'm looking forward to trying it out in the next RTTY contest.

I've also ordered the 1.8KHz filter for phone contests - especially SS phone! I have the 1.8KHz
roofer for the FT1000D, it'll be interesting to compare them.

hope this helps - jeff wk6i
--
Jeff Stai               [hidden email]
Twisted Oak Winery      http://www.twistedoak.com/
Winery Blog             http://www.elbloggotorcido.com/
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