K3: reduced PWR in Data Mode on 10m only

[Bob KD7YZ]

On 4/18/2014 07:42, Don Wilhelm wrote:
> Bob,
>
> DATA A, AFSK A, PSK D, and FSK D are data submodes.

I am in Data-A

--

Bob KD7YZ
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[Bob KD7YZ]

On 4/18/2014 08:25, Don Wilhelm wrote:

> You may want to put them at the antenna feedpoint,


> If your feedline runs away from
> the antenna perpendicular to the radiator for at least 1/4 wavelength,


Kinda seen in the picture I put, at the bottom of others, on QRZ (link
below).
450-ohm line circa a hundred feet of it to balun, then about ten feet
RG213 to KAT500


--

Bob KD7YZ
AMSAT LM 0901
http://www.qrz.com/db/KD7YZ
www.denstarfarm.us/LGD
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[Jim Brown-10]

On 4/17/2014 9:29 PM, Slava Baytalskiy wrote:
> Its no LP-Pan/NaP3, i tell you that

The P3 is QUITE powerful once you set up the buttons and learn how to
use it. As with most gear, RTFM is a great start. :)

First, always use averaging mode, with long averaging times, and set the
screen so that a large part of the display is the waterfall. Second, set
the scale and sensitivity. I use 24 dB for everyday operation and 42 dB
for contests. I set the sensitivity so that the noise level is very
close to the bottom of the display.  And always use Fixed Tune Mode (the
limits of the display remain constant as you tune across the band. This
setup makes weak signals stand out best.

Next, program the buttons. I assign the Fixed Tune Toggle to a button,
the Peak/Average to another, and use the remaining buttons for display
widths of 2 kHz, 10 kHz, 20 kHz, 50 kHz, 100 kHz, and 200 kHz. The 10
kHz width is great for CW pileups, 20 and 50 for SSB. The wider settings
are useful for monitoring bands for DX openings (160M, 10M, 6M), for
contesting, and for recognizing various forms of noise.

73, Jim K9YC


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[Jim Brown-10]

On 4/18/2014 5:25 AM, Don Wilhelm wrote:
>
> You can get the FT240-31 toroid cores from Diz at
> http://www.partsandkits.com/ 

This is a pretty expensive way to buy them -- even the 10 piece price is
double his cost. If you need these parts (and most of us do), you might
try to organize a group purchase with one or more local ham clubs for a
full box, which will yield a much lower cost. I've done well with Dexter
Magnetics near Chicago, and I've heard good reports about Lodestone
Pacific. Expect to buy 2.4-in o.d. cores for about $5 in lots of 50 from
these vendors, with additional discounts for larger quantity. Part
numbers are in Appendix 1 of the tutorial. This one is Fair Rite 2631803802.

73, Jim K9YC
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[k6dgw]

Well, for what it's worth:  I've had my P3 for about a year now, and
I've found that how one operates it is highly personal and takes some time.

Function Keys:  Mine are all SPAN selections, 4 [for looking at a single
signal's spectrum, 20 [almost always my choice for CW], 50 [CW/RTTY in
contests], 100 [SSB], and 200 [last used when tracking down noise from
an SMPS].  The other 3 have yet to be assigned.

Averaging: 2 or sometimes 3 [exactly the opposite of Jim's setting
:-))].  My screen is split in the middle and I use the monochrome
waterfall setting [colorblind, thanks Alan!].  I haven't used the PEAK
function since I first tried it out.  I always use FIX TUNE [end points
are stable, receive cursor moves as I tune].  I use the FULL SCREEN mode
when I tune past the edge of the display [the half-screen really
confuses this OF].

I can tell the difference [barely] between the VFO A and VFO B cursor
unless I'm split, then they look the same.  I've gotten fairly adept at
keeping track of VFO B and haven't incurred the wrath of the UP Cops in
a long time.  The two MKR cursors look the same to me but since they
appear in the WF, I distinguish them from the VFO cursors easily.  I've
used MKR A a bit, usually when looking a a single signal's spectrum,
I've never used MKR B and I've never QSY'd with the cursors.

I run the dBm scale on the ordinate and normally have the REF LVL set so
the noise is right on the baseline and the top of the spectrum display
is -100 to -95 or so.  My K3 S-meter is in absolute mode and I
calibrated it to -73 dBm = S9 with my service monitor.  Running it like
this, the background of the WF is black and signals even right at the
noise floor will trace visible lines.

As Jim says, read the manual several times and get the definitions of
all the terms straight in your head.  Fred Cady's K3 book has a section
on the P3 and it is super useful.  YMWV ["Your Mileage *WILL* Vary], as
I said, it seems to be a very personal thing.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org

On 4/18/2014 9:42 AM, Jim Brown wrote:

> First, always use averaging mode, with long averaging times, and set the
> screen so that a large part of the display is the waterfall. Second, set
> the scale and sensitivity. I use 24 dB for everyday operation and 42 dB
> for contests. I set the sensitivity so that the noise level is very
> close to the bottom of the display.  And always use Fixed Tune Mode (the
> limits of the display remain constant as you tune across the band. This
> setup makes weak signals stand out best.
>
> Next, program the buttons. I assign the Fixed Tune Toggle to a button,
> the Peak/Average to another, and use the remaining buttons for display
> widths of 2 kHz, 10 kHz, 20 kHz, 50 kHz, 100 kHz, and 200 kHz. The 10
> kHz width is great for CW pileups, 20 and 50 for SSB. The wider settings
> are useful for monitoring bands for DX openings (160M, 10M, 6M), for
> contesting, and for recognizing various forms of noise.

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[W2RMS]

Thanks for everyone's input on their P3 usage patterns!
Very helpful.
Just read the manual cover to cover (again) and set my new P3 up to what seems to be good for now.
You know what would be a good addition to the firmware? I think it would be nice if the last used FN button would be highlighted on screen.
Like when i press FN3 - i think it would be helpful to glance at the screen and see that it was the last one pressed...

That's just me, of course.

Slava B
W2RMS

On Apr 18, 2014, at 6:18 PM, Fred Jensen <[hidden email]> wrote:

> Well, for what it's worth:  I've had my P3 for about a year now, and I've found that how one operates it is highly personal and takes some time.
>
> Function Keys:  Mine are all SPAN selections, 4 [for looking at a single signal's spectrum, 20 [almost always my choice for CW], 50 [CW/RTTY in contests], 100 [SSB], and 200 [last used when tracking down noise from an SMPS].  The other 3 have yet to be assigned.
>
> Averaging: 2 or sometimes 3 [exactly the opposite of Jim's setting :-))].  My screen is split in the middle and I use the monochrome waterfall setting [colorblind, thanks Alan!].  I haven't used the PEAK function since I first tried it out.  I always use FIX TUNE [end points are stable, receive cursor moves as I tune].  I use the FULL SCREEN mode when I tune past the edge of the display [the half-screen really confuses this OF].
>
> I can tell the difference [barely] between the VFO A and VFO B cursor unless I'm split, then they look the same.  I've gotten fairly adept at keeping track of VFO B and haven't incurred the wrath of the UP Cops in a long time.  The two MKR cursors look the same to me but since they appear in the WF, I distinguish them from the VFO cursors easily.  I've used MKR A a bit, usually when looking a a single signal's spectrum, I've never used MKR B and I've never QSY'd with the cursors.
>
> I run the dBm scale on the ordinate and normally have the REF LVL set so the noise is right on the baseline and the top of the spectrum display is -100 to -95 or so.  My K3 S-meter is in absolute mode and I calibrated it to -73 dBm = S9 with my service monitor.  Running it like this, the background of the WF is black and signals even right at the noise floor will trace visible lines.
>
> As Jim says, read the manual several times and get the definitions of all the terms straight in your head.  Fred Cady's K3 book has a section on the P3 and it is super useful.  YMWV ["Your Mileage *WILL* Vary], as I said, it seems to be a very personal thing.
>
> 73,
>
> Fred K6DGW
> - Northern California Contest Club
> - CU in the 2014 Cal QSO Party 4-5 Oct 2014
> - www.cqp.org
>
> On 4/18/2014 9:42 AM, Jim Brown wrote:
>
>> First, always use averaging mode, with long averaging times, and set the
>> screen so that a large part of the display is the waterfall. Second, set
>> the scale and sensitivity. I use 24 dB for everyday operation and 42 dB
>> for contests. I set the sensitivity so that the noise level is very
>> close to the bottom of the display.  And always use Fixed Tune Mode (the
>> limits of the display remain constant as you tune across the band. This
>> setup makes weak signals stand out best.
>>
>> Next, program the buttons. I assign the Fixed Tune Toggle to a button,
>> the Peak/Average to another, and use the remaining buttons for display
>> widths of 2 kHz, 10 kHz, 20 kHz, 50 kHz, 100 kHz, and 200 kHz. The 10
>> kHz width is great for CW pileups, 20 and 50 for SSB. The wider settings
>> are useful for monitoring bands for DX openings (160M, 10M, 6M), for
>> contesting, and for recognizing various forms of noise.
>
>
> ______________________________________________________________
> Elecraft mailing list
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> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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