Bob - W0GI wrote:
After feeding the K3 IF through LP-Pan, then to PowerSDR-IF and CW
Skimmer, you don't have to convince me.
...
My favorite is CW Skimmer. With the Audio IF setting at -4174, I click
on a text of a signal, and it tunes the K3 to zero beat on that frequency.
Ready
I just got a pair of 900 mhz headphones as a gift and they work great
throughout the whole house on my K3. Nice and clear and it has a 165 foot
range. After I got them, I went out and bought a wireless mic setup. There
is an amplifier on it and it is at the base which plugs into the back of the
I agree with Eric; I started with the 1000Hz and the 400Hz for the cw section
and was just curious about an additional 250Hz Filter: I would never put it
out again. My normal work is done in the 400 range, if I want more
atmosphere I open up to 1K but when it comes to contest work the 250 is a
Yes it was my mistake,NR will not work when AGC is OFF,my apology.
AD4C
For a refined ham it is compulsory to own a k3
--- On Wed, 2/17/10, Philippe Trottet trot...@unhcr.org wrote:
From: Philippe Trottet trot...@unhcr.org
Subject: Re: [Elecraft] Testing my DSP
To:
Alan Bloom-2 wrote:
You should be able to see signals on the P3 that you can't hear.
(Unless you have VERY good ears!)
Unfortunately the reverse is true for me. Case in point...this morning
5W0YA was very weak on 160m but Q5 copy by ear. Nothing was showing in CW
Skimmer's waterfall
How does the loss of the 250Hz compare to the 400HZ. I would think that
there would not be much difference since they only differ by 65Hz. Would
someone who has used both of these filters respond to this? Thanks.
Art, WB8ENE
--
View this message in context:
Hi, Milt - I went through the K3/MK2r+/N1MM migration. I found the best
source of info to be PA1M at
http://www.pa1m.nl/pa1m/index.php?page=setup-pa1m---current
If you go through his setup, you should be able to make everything work. If
you run into some snags, feel free to contact me direct at
And, it became one of the great movies of all times IMHO. Starring Spencer
Tracy and Frederic March, with Gene Kelly in a strong supporting role.
Terrific performances all around. The movie was just called Inherit The
Wind -- Guess they dropped the To if that's what the book was titled.
Dave
What is the big deal with some loss in a narrow filter when the filter set up
includes compensation for the loss. I bet the other filters also have
insertion loss but this loss is pretty uniform and already compensated for with
adequate gain. A bit of loss in the IF which is compensated for
My K3 is SN 3873 so it came with very good full bodied audio for the head
phones. The audio out of the interior speaker rolls off below 400 Htz, and
rolls off pretty hard below 300 Htz. Yes, I know that it is a small speaker but
I believe that this is more than is caused by a small speaker.
I'm not anit-scope; just don't think I can justify the cost based
upon my casual operating style. Certainly I would like to have one to
play around with, I just don't want to pay for it...
For the scenarios you listed below I think a non-scope K3 could be
much improved if it had a wider bandpass
The recent thread on a possible new Elecraft Amp has made me ponder
about TR switching circuits to an external amp from the 10-watt K2.
I'm guessing that for QSK operation, one has to have a TR relay with a
fast transition speed. And on top of that, the relay contact ratings
would have to handle
Yes, I know that it is a small speaker but I believe that this is more
than is caused by a small speaker. This restriction does not seem to be in
the exterior speaker jack, or the head phone jacks...I would like to
modify this to allow the response down to 100Htz or so. Any suggestions on
I'd be more impressed if it made a hole on 20M on Saturday during CQWWDX
Steve :jumping:
Scopes are nice tools, but must have is open to debate. Part of the fun of
radio is tuning across the band and finding something on your own, before
it's spotted...
A better question, from my perspective,
Each morning I wake up stressed because I do not have all five filter slots
populated. There is a hole in my K3 and it bothers me. I had been saving the
high end for a FM filter but now decided that No, I won't be doing FM with my
K3. So, my filters are: 400 Hz, 1000 Hz, 2.7 KHz (5-p), 6
Not overkill at all, Phil, if you are into CW contesting. Especially
something like the 160 meter events.
But I would recommend the 200 Hz 5 pole rather than the 250 Hz 8 pole. The
250 and 400 are actually pretty close in actual BW (see measured data
available elsewhere). I use the 200 and 400
G'morning, Phil:
After taking a look at the response curves for the filters, I chose the
5 pole 200 Hz filter to accompany the 8 pole 400 Hz filter. I find it
useful in the crowded bands during the contests.
73,
Ken K3IU
~~~
On 2/17/2010 9:52 AM, Phil Hystad wrote:
I'm not trying to be a list cop! I just want to reiterate
the gentlemen's agreement to precede the subject of your
post with the appropriate radio in brackets.
I have gotten pretty good at deleting much of the mail on
one of my favorite lists, but my filters work a lot faster.
Thanks and sorry
Craig D. Smith wrote:
But I would recommend the 200 Hz 5 pole rather than the 250 Hz 8 pole.
Ditto. W4TV (?) measured the 250 (actually 370 Hz) versus the 200 and the
latter had more rejection at ALL frequencies, even though it's only a
5-pole. I only use my 200 ~1% of the time (500 Hz
Want to break out of the dull winter routine?
Want to be part of the largest QRP CW club in the world? (4,000+ members from
80+ countries!)
Perhaps you are looking for someone to Elmer you? Then we have just what you
need to develop and improve your CW skills, including QRS nets perfect for
Also note that the P3 provides a buffered K3 If feedthrough to drive
other PC apps like Skimmer, PowerSDR etc.
73, Eric WA6HHQ
On 2/16/2010 6:40 PM, Ken Alexander wrote:
I suspect the toy factor will be responsible for the majority of P3
purchases! 8-)
73,
Ken Alexander
VE3HLS
I actually like sending with the paddles, but using the VFO knob isn't that
exciting. If I see a CQ on CW Skimmer, I can click on the text, and it tunes
the K3 zero beat on that signal. Or I can turn the vfo knob then spot the
signal, using up time for no purpose. Why not use a tuning aid?
I
WB8ENE wrote:
How does the loss of the 250Hz compare to the 400HZ.
http://www.inrad.net/product.php?productid=150cat=140page=1 (see plot)
http://www.inrad.net/product.php?productid=149cat=140page=1 (no plot)
Typical Insertion Loss 250 Hz: 9 dB; 500 Hz: 7 dB
Both appear to be
I am looking for an LP-PAN/E-MU 0202 setup.
Anyone want to sell theirs to fund the P-3?
Let me know what you have and what you want
For it.
Thanks
Dan N0DT
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Most are ground triggered, but not all. Check before you buy! I am having
good results from an AD5X QSK kit on my Dentron Clipperton L that puts out
about 600 watts. I am not sure that it would switch a more powerful amp, but
if you are now at 10 watts, you will probably find a 600 watt or
Eric Swartz - WA6HHQ, Elecraft wrote:
Also note that the P3 provides a buffered K3 If feedthrough to drive
other PC apps like Skimmer, PowerSDR etc.
But you would still need a SoftRock, LP-Pan or whatever to make sense of it.
Pity it doesn't provide an I/Q output, then you would just need
It would be great if the P3 provided I/Q output's as well.
Perhaps some knockout plugs on the back chassis panel would allow
various output jacks and facilitate lots of user customizations.
Eliminating the duplication of the same via separate hardware connected
to the buffered IF output would
One thing to remeber is that if you get strong signal within your roofing
filter passband you will notice that AGC will go up to protect DSP
overloading. Then you have use for narrower roofing filters.
I have 400Hz but considering to add 200Hz after working couple of CW and
RTTY contest on 40
Bob - W0GI wrote:
I actually like sending with the paddles, but using the VFO knob isn't
that exciting. If I see a CQ on CW Skimmer, I can click on the text, and
it tunes the K3 zero beat on that signal. Or I can turn the vfo knob then
spot the signal, using up time for no purpose. Why
Wouldn't it be better just to get the digital stream that is sampled from
the I/Q signals. That way, the ADC is done just once. Then, your computer
can take the binary stream (new interface needed I guess) from the
P3 and then do what it wants with various digital filters and other F/X.
On
Eric,
That's good but two questions...
1) If you purchase a P3, do you also have to purchase a KXV3A or will
one be included?
2) In addition to the buffered K3 IF feedthrough, will the inphase (I)
and quadrature (Q) audio components of the downshifted IF be provided as
an additional output
and Henry Morgan...
Excellent slice of history on celluloid... The courthouse in Dayton Tn still
stands.
-
Julius Fazekas
N2WN
Tennessee Contest Group
http://www.k4ro.net/tcg/index.html
Tennessee QSO Party
http://www.tnqp.org/
Elecraft K2/100 #4455
Elecraft K3/100 #366
Elecraft K3
Elecrafters,
I have just written a long email to the reflector, and then deleted it. I
did you a favor. hi I will keep my opinion to myself. However, I know that
scopes, skimmers, computers,etc. are an integral part of the hobby in 2010.
However, I find that - just as in the past 50 years -
It was pointed out to me that, as a tool, a P3/Panadapter/Softrock does
provide a quick way of assessing activity on a given band quickly versus
twirling the knob.
I can see where this would be useful, particularly if you were looking for
openings on 10 and 15, in the past few years. Too, you
Want to break out of the dull winter routine?
Want to be part of the largest QRP CW club in the world? (4,000+ members from
80+ countries!)
Perhaps you are looking for someone to Elmer you? Then we have just what you
need to develop and improve your CW skills, including QRS nets perfect for
Why couldn't the P3 have had buffered IQ outputs so that it wouldn't be
necessary to purchase extra hardware to run those other PC apps? The IQ
signals have to be there inside the P3 anyway, right?
73,
Dave AB7E
--Original Mail--
From: Eric Swartz - WA6HHQ, Elecraft
Er, I thought that was kind of the point of it all. To find and work stations
with just your radio using your basic operating skills (i.e. listening) is
part of the overall enjoyment?
Try it sometime - I.e. turn on your 400 or even 200hz CW filter and start at
the very bottom of the band. Start
your K3 will need to have the KXV3 or KXV3a for IF output. Its not
included with the P3 since most K3s already have added it.
I/Q is not available as an output. That would seriously delay the P3
release and add to our cost. Its not a trivial add since its only
derived internally in the DSPPIC
On Wed, 2010-02-17 at 01:03 -0800, Julian, G4ILO wrote:
I don't know. Someone could write a bit of software to actually reply to the
station and make the contact saving you the bother. Wouldn't that be even
better? :P)
Back in the late 70s when I was working as a W1AW operator, Irv Hoff
Elecraft Mail LIST GUIDELINES 2010
For those of you who are new to the list, (and for those of us who have
rapidly failing memories..), here is a quick list of things to remember when
posting to this list. Please save this for future reference.
The most important thing to remember is that this
My K144XV was shipped yesterday. I plan on using it for SSB as well as
occasional repeater use. My question is I would like to put the FM filter
(for the repeater use) in the SUB receiver. Has anyone who has installed
their K144XV using it on the SUB RX? If so, any problems with this setup?
73
I haven't used the CW Skimmer for long, but so far I have noticed that when
the signals are in the noise, just like any other decoder, it doesn't work
as good as a pair of ears feeding a human brain.
Skimmer is a tool, but it has limitations. If you want the really weak ones,
the PC isn't going
Top posting is the official standard for this list, and its especially
important for those of us who also read our email on PDA phones. (I'm
using the new Motorola Droid..)
Reading the response first, at the top, is a huge time saver, especially when
you have to read hundreds of emails daily as
The FM filter needs to be installed on the Main RF Board for FM transmit.
73, Eric WA6HHQ
On 2/17/2010 10:09 AM, Jeff KB2M wrote:
My K144XV was shipped yesterday. I plan on using it for SSB as well as
occasional repeater use. My question is I would like to put the FM filter
(for the
Er, I thought that was kind of the point of it all. To find and work
stations with just your radio using your basic operating skills (i.e.
listening) is part of the overall enjoyment?
I like CW Skimmer, but for very weak signals, your ears work better. These
debates usually become PC vs No PC.
Well I'm mac-only at home so I can't use a lot of the cool stuff like that hi
hi. But seriously, I can definitely see how a scope or etc. can be useful
for, say, contesting.
And I didn't mean to take away from visual innovations like this for amateur
radio. I'm kind of a CW shellback, but that
Can't we go back to spark as Telsa, Marconi, and God intended it to be?
73,
Bob
K2TK ex KN2TKR (circa 1956) K2TKR
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Can't we go back to spark as Telsa, Marconi, and God intended it to be?
I can visualize the poster: A stormy sky with lots of lighting ... and
the caption God uses spark
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Home:
Julius wrote:
It was pointed out to me that, as a tool, a P3/Panadapter/Softrock does
provide a quick way of assessing activity on a given band quickly versus
twirling the knob.
I can see where this would be useful, particularly if you were looking for
openings on 10 and 15, in the past few
On Wed, Feb 17, 2010 at 06:26:26AM -0800 I heard the voice of
Julius Fazekas n2wn, and lo! it spake thus:
Part of the fun of radio is tuning across the band and finding
something on your own, before it's spotted...
These sort of statements always make me twitch. All of (not just part
of) the
:clap:
ROTFLMAO
Well put Matthew! (Matthew 7:12 I suspect?)
I should have qualified my statement with for me. Wording is an important
part of communicating an idea. I did not mean to pontificate.
Cheers,
Julius
-
Julius Fazekas
N2WN
Tennessee Contest Group
Hi Oliver,
i think there is a big misunderstanding how NR works. NR is not able to
conjure a voice out of the dark.
If a signal is not readable without NR, you won`t have luck with NR enabled.
It only makes it more comfortable to listen to.
73
Michael
--
View this message in context:
I've had my K2 for a few years now and it does the same thing as yours. The
power or key speed will pop up once in a while and then vanish. It doesn't
seem to hurt anything so, I've just ignored it.
Gary, N7HTS
On Mon, 15 Feb 2010 17:54:01 -0800 (PST)
lstavenhagen lstavenha...@hotmail.com
Well-said, Michael. (:-))
73! Ken Kopp - K0PP
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Hello Elecrafters,
While some of you wait for the P3, get your feet wet with PowerSDR-IF Stage in
the meantime.
New version of PowerSDR/IF Stage has been posted
v1.19.3.4 to the download website:
http://www.wu2x.com/sdr.html
A couple quick highlights: Its based on PowerSDR 1.19.3. This
Ditto. W4TV (?) measured the 250 (actually 370 Hz) versus
the 200 and the latter had more rejection at ALL frequencies,
even though it's only a 5-pole.
Actually, I compared both of my 200 Hz filters (measured) to
the curves for the 250 Hz filter on the Elecraft web page:
What do you all think about 500hz 8 pole filter. You have order from
inrad?
N6XVT
Sent from my iPhone
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Post:
Hi Eric and Elecrafters,
I have just installed my second RX with the KBPF3. I am just now
listening to the shortwave broadcast bands and using the 13 KHz NBFM filter
and 6 kHz AM filter am surprised at how good the radio does with a pair of
micro KLH HiFi Speakers for SWLing. This is not
Hector -- THANKS for sharing your settings. In particular the NR F5-3
for SSB. It's a sweet spot!
It makes a weak signal more comfortable to listen to (no, not a
miracle) while stronger signals are not so distorted or harsh.
I had overlooked this particular setting in my frustration with NR
With 19 months of pretty heavy CW operation, I have not detected a single time
when I thought a steeper skirt on my 5 pole 500 Hz filter would have helped,
but I think you can order one from Inrad if you like.
Willis 'Cookie' Cooke
K5EWJ
From: Karl
Sorry for misleading you with my poor sentance sructure. I do have a
500hz 8
pole and I know you order it from Inrad. If the 5 plies are better why
even sell the 8 pole? Is there some advantage to them?
N6xvt
Sent from my iPhone
On Feb 17, 2010, at 1:51 PM, WILLIS COOKE
WILLIS COOKE-2 wrote:
With 19 months of pretty heavy CW operation, I have not detected a single
time when I thought a steeper skirt on my 5 pole 500 Hz filter would have
helped, but I think you can order one from Inrad if you like.
I used the Elecraft 500 Hz 5-pole filters for ~18 months
I have just finished the basic construction of the RF board.
Both the base and collector of Q7 fail resistance checks, being near
shorted out (0.1-0.2 ohm). I must have a solder bridge SOMEWHERE,
otherwise unidentified. No obvious bridges noted.
Logically, it should somehow be associated with
As an SWL since childhood, this is a subject near and dear to my
heart... :-)
After JRC and Drake abandoned the consumer HF receiver market there
has been a dearth of great tabletop receivers for the SWL. There are
commercial receivers but they cost multi-kilobucks, leaving little in
the
What is the most likely souce of my problem? Should I take out T3 and/or
T4 before rechecking the resistances?
Problem fixed.
I reflowed all the solder joints in the suspect area. When I got to T4,
the problem went away.
tnx.
Conway Yee
Conway,
Do you have the heat sink in place? If so, the most probable failure is
a short due either misplaced thermal pads or a bit of metal entrapped in
the pad.
If the heat sink is removed, then you are correct in your assumptions.
Try first removing T3 - then check again. If still
My lineup for both RX in my K3 is
13, 2.7, 1.8, 400, 250
6, 2.7, 1.8, 400, 250
I didn't purchase the 250 8 pole specifically as my roofer over
200/150/100/50 DSP bandwidths. I have the 400 8-pole identified as 450 in
the K3 and the 250 identified as 350. I use WIDTH 350 as my tighter run
Phil,
Don't get so stressed. My K3 has 3 open filter slots, and it does not
concern me at all.
How much serious contesting do you do - how much serious DX Chasing?
Consider my logic: The DSP filtering alone is really good and will
handle conditions under more casual situations than the above.
Hi Guys,
I also was an SWL'er as a kid but haven't done much of it recently
because most of my rigs over the years have been Ham band only.
I did, however order my K3 with the General Coverage option. I am also
very impressed with the great sound when a good pair of tabletop
speakers are added
What about the Ten-Tec RX320D
http://radio.tentec.com/amateur/receivers/RX320D?
73,
Dave
WW2PT wrote:
...
There are
commercial receivers but they cost multi-kilobucks, leaving little in
the middle between pro receivers and portables -- Icom R75 being the
only amateur manufacturer
What is the advantage of sticking the thermal pads onto the transistors
instead of the heatsink itself? The manual is VERY explicit in saying
that the adhesive side must be on the transistor.
tnx.
Conway Yee
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Conway,
It is simply easier that way. Trying to stick the thermal pads to the
heat sink can be done, but it is more difficult to get them aligned
properly. We used to stick them to the heat sink until someone figured
out that putting them on the transistors was so easy that it should
I hereby revise and extend my remarks to read, Icom being the only
amateur manufacturer to offer any HF receivers with knobs and
buttons. ;-)
Admittedly, I considered the Ten-Tec RX-340 ($4000+, clearly falls
into the pro category) but forgot about the 320D which I'm sure is a
fine radio.
Bob, try these two web sites:
http://www.short-wave.info/
http://www.primetimeshortwave.com/
Not sure if that helps with the interesting part, but certainly
helps you find English broadcasts!
My favorite stations have always been Radio Australia and Radio New
Zealand. They come pounding
Eric and all,
I'm probably going to be hooted for this post, but I think it is
pertinent.
First, let me say that I love this reflector. It is a bastion of excellent
info, even when it doesn't absolutely, directly, involve an Elecraft
product. I thank you for allowing it to be flexible. I
And just what was that???
Dave W7AQK
- Original Message -
From: Bob k...@att.net
To: Elecraft Reflector elecraft@mailman.qth.net
Sent: Wednesday, February 17, 2010 11:47 AM
Subject: Re: [Elecraft] For you Anti-Scopes
Can't we go back to spark as Telsa, Marconi, and God intended it
Ok Windy,I am glad to help you out,now you understand why I keep saying the K3
NR works great,there is no need to spend in anything external,its just a matter
of playing with the settings,I always use the F5-3 for SSB,take care,bye
AD4C
For a refined ham it is compulsory to own a k3
--- On
Oh...I don't know about thatSurely it's more inspirational to tweak a
cat whisker on the crystal :*)
Steve
N4LQ
- Original Message -
From: K5NU k...@ainternet.biz
To: Elecraft@mailman.qth.net
Sent: Wednesday, February 17, 2010 12:31 PM
Subject: [Elecraft] K3
Elecrafters,
I have
Watched the video of Wayne's interview re the P3.
The zooming in and out almost got me G
What is the $100 board that he mentioned was needed in the K3?
Or did I mis-hear or mis-understand?
Dave G.
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I own an Icom IC-R75 loaded with filters for both IF and I do love it either
for AM broadcast signals or SSB but certainly IF Elecraft could develop let say
the K3R I will be the first to purchase one,it would be like having again
another K3 without the TX inside,it could be even smaller,half
That would be the KXV3, the so-called transverter interface which includes
the required
IF output. It also has the rx antenna in/out jacks, which is why I bought it.
On 2/17/2010 6:28 PM, DAVID GROPPER wrote:
What is the $100 board that he mentioned was needed in the K3?
Or did I mis-hear or
FWIW, I find Yahoo Groups difficult to slog through,
not user-friendly and seldom use it. I'd not want to
miss out on all the info that appears here, but I wouldn't
deal with Yahoo to read it.
I -would- have more time in my day, but I'd be less aware.
73! Ken Kopp - K0PP
Dave,
Please *not* Yahoo groups!
While it is popular, it has many drawbacks for me. I find it just as
difficult (and even more) to find a particular post on the web version
as it is in the digest form of this or any other reflector. At least
some of the formats of this reflector offer
Hi Eric,
Good to know, I will order one when we will be able to place the on-line order
for the P3.
73's
Philippe A65BI
K3#3616
*Elecraft, by Hams, for Hams...What else ?
Eric Swartz - WA6HHQ, Elecraft e...@elecraft.com 17-02-2010 22:05
your K3 will need to have the KXV3 or KXV3a for IF
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