Hello Group,
If you are considering selling your K2 or K3, please advise me the following
information OFF the list :
1. first 2 digits of the serial no. of your radio e.g. 66xx
2. options installed
3. working environment (smoking or non-smoking)
4. your expected price (no worry about the
Is there any likelihood of blank P3 cases being made available in the future
(as with the EC1, EC2) for people who would like to build their own matching
accessories?
-
Julian, G4ILO. K2 #392 K3 #222.
* G4ILO's Shack - http://www.g4ilo.com
* KComm - http://www.g4ilo.com/kcomm.html
* KTune -
You might consider that it's not a contesting bandwidth, more a
pleasant casual operating bandwidth. And in casual conditions my SSB
1.8 roofing filter with DSP set to 750 does as well, which I do. It's
only in contests that I get a 35 over 9 signal up 350 Hz that I need
to keep out of the
On Wed, 14 Jul 2010 09:06:04 -0400, Guy Olinger K2AV wrote:
You might consider that it's not a contesting bandwidth, more a
pleasant casual operating bandwidth. And in casual conditions my SSB
1.8 roofing filter with DSP set to 750 does as well, which I do. It's
only in contests that I get a 35
Is there any likelihood of blank P3 cases being made available in the
future (as with the EC1, EC2) for people who would like to build their own
matching accessories?
Ditto.
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Hello all,
I have been thinking about building another K3 for EME .
In the Aug QST on page 49 it states that Elecraft recommends
throttling back the external ( XV144 Xverter )to 5 watts
in FM or data modes, Is this true ??
If this is not true How much power can I run with JT65 mode.
This is the
Wed Jul 14 09:06:04 EDT 2010 Guy Olinger (K2AV) wrote ...
... it's not a contesting bandwidth, more a pleasant casual operating
bandwidth ... my SSB 1.8 roofing filter with DSP set to 750 does as well ...
Wed Jul 14 09:36:33 EDT 2010 Jim Brown (K9YC) wrote ...
You're trying to solve a problem
Hello,
I have in my K3, in both MAIN and SUB this filters:
KFL3A-400 400 Hz, narrow 8-pole filter
KFL3A-1.8K 1.8 kHz, 8-pole filter
When I reduce width, I notice that it went down to 200 in CW. This is
true?
So that´s means I don´t need the KFL3A-250 250 Hz, narrow 8-pole
Thanks Tom,
I have the later version, will check with relays it have.
Will install it, taking care of the amp relay control. I have the diagram to
connect it right.
Thanks !
73,
Jorge
CX6VM/CW5W
-Mensaje original-
De: Tom W8JI [mailto:w...@w8ji.com]
Enviado el: Martes, 13 de Julio de
As another data point in this discussion...
I operate 100% CW with my K3, which is equipped with 200, 500, 1000, and
2.7KHz filters.
During FD 2010 I made 400+ CW QSO's during my two 4 hour operating shifts.
The great majority of that operating time was spent with the DSP bandwidth
at 600-700 Hz
Gary, you said:
existing 500 Hz filter (which is too narrow)and their 1 kHz filter (which
is too wide).
500 Hz is too narrow? For what? 1 kHz too wide? For what? What's in this
bandwidth gap?
I have both the 500Hz and 1kHz filters in my K3, and they are perfect for
their intended purpose. I see
There are two levels of filtering going on.
The DSP (software) filtering is independent of the crystal roofing
(hardware) filtering. You set the roofing filters to automatically kick in to
match what you dial for the DSP. You have to tell the radio what filters you
have installed and
I wonder if he is talking about QRN from storms, etc. or manmade QRN?
I've heard this before. The K3's AGC pulse rejection feature is intended to
improve
performance in this area.
Has anyone tried to quantify or describe this better? It would need to be done
with an a/b
comparison. It's not
Not really. Remember that these are roofing filters and their job is to reduce
the
amount of signal that the DSP has to deal with. The ultimate selectivity is
based
on the IF/AF DSP.
Also review the manual about the dual context feature. This gives you a center
narrow filter and a wider
On Wed, 14 Jul 2010 11:45:01 -0300, Jorge Diez - CX6VM wrote:
Hello,
I have in my K3, in both MAIN and SUB this filters:
KFL3A-400 400 Hz, narrow 8-pole filter
KFL3A-1.8K 1.8 kHz, 8-pole filter
When I reduce width , I notice that it went down to 200 in CW. This is
true?
Yes, and it can
I would have no use for a 750 Hz filter. 99% of the time I use SSB bandwidth
on emty CW bands, or less than 500 Hz BW.
I have my filters set so the 500 Hz roofing kicks in at 600 Hz BW, my 250
roofing in at 350.
This is in an attempt to soften the big 50 Hz selectivity steps when using
narrow
Thank you for posting K9OM's comment.
FWIW I have a Perseus and two other receivers which both use H-Mode mixers,
one of which uses a version of PA3AKE's H-Mode front end.
With the Perseus used as a stand alone receiver, I have not experienced this
noise problem in the presence of mild or
FWIW I have a Perseus and two other receivers which both use H-Mode mixers,
one of which uses a version of PA3AKE's H-Mode front end.
With the Perseus used as a stand alone receiver, I have not experienced
this
noise problem in the presence of mild or quite strong static or manmade
pulse
Thanks all for the info.
Jim your email is very clear for me, I not understand too much how works
roofing filers and DSP, buy you clarify me something.
I have the same filters you have, and seems will be good to add the 250Hz
filter, since I am in contests and I notice QRM of stations near my
Thanks Joe and Chen,
I'm using a series of power and stepped attenuators to couple the K3 to the
SDR-IQ. The input attenuator is underrated a bit so I've been necessarily
limiting transmit time at the higher levels. When time permits, I'll drag in a
directional couple from storage and use
On Wed, 14 Jul 2010 14:12:45 -0300, Jorge Diez - CX6VM wrote:
So now I have another question, I think I have room for only one more
filter, so how will affect DIVERSITY if I have 250Hz, 400Hz, 1.8kHz in MAIN
and 400Hz, 1.8kHz in SUB?
I cannot do DIVERSITY with a 250Hz narrow filters (because I
As Wayne mentioned in his email, we've been shipping P3s to our Field
Testers and are in the process of verifying the manual and P3
operation, and incorporating suggestions from our field Testers.
First shipment estimate for P3s is 7/26-7/30.
We now expect to receive our first production
Not near term, but we'll revisit this as we get caught up on P3s.
73, Eric
On 7/14/2010 6:52 AM, Andrew Moore wrote:
Is there any likelihood of blank P3 cases being made available in the
future (as with the EC1, EC2) for people who would like to build their own
matching accessories?
We're talking roofing filters here, not operating bandwidth. The
functional difference between a 750 Hz roofing filter and a DSP setting
of 750Hz versus a 1000 Hz roofing filter and a DSP setting of 750Hz is
just plain trivial ... ESPECIALLY in a non-contest environment. At
least it seems
On Jul 14, 2010, at 10:31 AM, Wes Stewart wrote:
Chen does your K3 PA talk back?
Nothing that I can hear over my tinnitus, Wes.
73
Chen, W7AY
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The link below shows which radios were used by WRTC participants.
There was certainly a preponderance of K3's.
Dave Hachadorian, K6LL
Big Bear Lake, CA
--
From: Igor Booklan SRR ra3...@srr.ru
Sent: Wednesday, July 14, 2010 10:27 AM
To:
Wed Jul 14 1130 EDT John King (WA1ABI) wrote ...
During FD 2010 I made 400+ CW QSO's ... the great majority ... with the DSP
bandwidth at 600-700 Hz ...
Hi John,
I appreciate your comments and I wouldn't expect you to want to make a
change for a 25% narrower filter. Rather my intention is
I respectfully disagree that Inrad's 500 Hz roofing filter is too
narrow. In my opinion, you are trying to market a solution to a problem
that doesn't exist.
Dunc, W5DC.
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Thanks for your explanation, I had missed the point of RLVZ's comment.
A related cause and I am speculating here without doing the calculations,
when the noise is rough and signals are at or under the noise floor might be
the added in-passband low level intermodulation products generated by a
20 of the 48 teams and three of the top 10 were 100% Elecraft.
Another five teams were 50% Elecraft. More than half of all
transceivers in use for WRTC were K3s ...
For a product as new as the K3 that is an amazing accomplishment.
The next most popular transceiver (five teams) was the FT-1000MP
Gary Hvizdak wrote:
If instead you think that there might be a greater demand for some other
bandwidth 8-pole INRAD roofing filter, please email me (off-Reflector) to
let me know that width and include your reasoning for desiring that other
width.
I'd be interested in a **true** 6 dB BW
Let's end this thread for now. If you have further questions or
comments, please correspond directly with Gary.
73, Eric WA6HHQ
Elecraft List Modulator
-
On 7/14/2010 11:40 AM, Duncan Carter wrote:
I respectfully disagree that Inrad's 500 Hz roofing filter is too
narrow. In my opinion,
I never said that it was, and I'm not the guy who thinks a 750Hz filter
is an important additional option. I use the 250 Hz 8-pole filter in my
K3 when I need a narrow filter for CW, and I use the 1.5 KHz 8-pole
filter any time I have the DSP set for greater than 300 Hz. Both work
great.
Would it be possible to add a function to the utility which creates a
file which lists all the K3 settings and configurations and control
settings when it is invoked? Something that could be cut and pasted
into an email or attached? This would be useful for many problem
resolve sessions.
I'm
This is a huge undertaking, and the MCU config variables are a moving target.
But it is (low) on my list of possible K3 Utility enhancements.
Dick, K6KR
Sent from my iPhone
On Jul 14, 2010, at 12:41 PM, Guy Olinger K2AV olin...@bellsouth.net wrote:
Would it be possible to add a function to
This very message and a host of others in the archives are the very reason I
own a K3 and have pre-ordered a P3. These guys listen to customer input,
respond, and fix things as soon as possible!!! The P3 does NOT do what I
really need in its initial form, BUT I am confident after emailing
Hi Wes,
Meant to reply earlier but got distracted.
Yes, my PA definitely sings with the 2-tone generator on. Like
yours it's somewhat dependent on power level. Unlike yours, I can
hear mine down to about 2.0w (albeit at a reduced level when the PA
drops out.)
73
--
Joe KB8AP
On Jul 12,
Regarding key clicks. I suspect this may vary considerably with the
specific circumstances including the likelihood of considerable
variations in the individual transmitter rise and fall times and and the
roofing filter bandwidths.
Last November, I think, I read a suggestion about blanking
On Wed, 14 Jul 2010 11:19:14 -0700, Dave Hachadorian wrote:
he link below shows which radios were used by WRTC participants.
There was certainly a preponderance of K3's.
Yes, but there is (at least) one very interesting side story that I
learned by watching the online video of the closing
Bill W4ZV wrote:
Gary Hvizdak wrote:
If instead you think that there might be a greater demand for some other
bandwidth 8-pole INRAD roofing filter, please email me (off-Reflector) to
let me know that width and include your reasoning for desiring that other
width.
I'd be interested in a
Hi Joe,
One more question, do you have the K3STFNR installed?
Wes
--- On Wed, 7/14/10, Joe Planisky jp...@jeffnet.org wrote:
Hi Wes,
Meant to reply earlier but got distracted.
Yes, my PA definitely sings with the 2-tone generator on. Like yours it's
somewhat dependent on power level.
For those reasons I would support 250Hz because it would meet
the needs of more users, but would vote against 200Hz (and in
this, I do literally mean vote with my pocketbook).
I agree with Ian here ... a filter with a reliable 270 Hz bandwidth
would be nearly ideal for RTTY and far better
Jorge Diez - CX6VM wrote:
I cannot do DIVERSITY with a 250Hz narrow filters (because I will not have
it in both receivers), buy the K3 will work OK using the 400Hz I have in
MAIN and SUB?
Yes diversity will work OK since both filters have offset = 0. For very
narrow BWs, I can even use
Our club's repeater has an odd offset. TX is 146.475 and receive is 147.420
(- 0.945). Getting this programmed with the K144XV has proven to be a
problem.
* The menu option for repater offset does not allow a 5 KHz change. I can
pick only .940 or .950
* I can program the K144XV for split
I have kind of ignoring this thread, but just realized that it
addresses a long-term desire of mine. I would like to tap the IQ
data for both the main and sub receivers simultaneously for pc
processing with special eme sw. I can do one channel using the
SDR-IQ but there are advantages to
A friend told me about a price increase. Is this true?
Chris W7CTH
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Yes, it was announced on the reflector yesterday. Takes effect the end of
the month on K3 and some other products. Check back to yesterday and you
should find it.
73,
Don, WB5HAK
- Original Message -
From: Chris Hembree w7...@yahoo.com
To: elecraft@mailman.qth.net
Sent: Wednesday,
Actions speak louder than words. Not bad for the new kid on the block
Here are the results (and rigs) for the just completed World Radio
Team Championship help in Russia (concurrent with IARU contest). Talk
about popular!
http://www.wrtc2010.ru/?id=75
de Doug KR2Q
Something I noticed in the pictures when I first saw them was the WRTC K3
shelf. I'm getting ready to build one for the shack, but it will have the width
for a P3 too.
73 de W3OU, Steve
-Original Message-
From: DOUGLAS ZWIEBEL doug...@gmail.com
To: Elecraft Reflector
They may only getting to what's worth, at least from my field day experience
with a K3; the greatest receive capability that I've ever heard in 53 years
on the air. I worked SSB within 4 feet of another guy on CW - the amazing
thing, was that we both on 20 meters and never heard a peep from one
I have an annoying static that rides on the receive signal of my K2/100. It is
in the audio and it comes in on CW and SSB regardless of which filter I am
using. Filters seem set ok. Both phone CW receive audio sound fine, but the
static rides on the audio. The stronger the signal, the more the
On 7/14/10 8:19 PM, Don Cunningham wrote:
Yes, it was announced on the reflector yesterday. Takes effect the end of
the month on K3 and some other products. Check back to yesterday and you
should find it.
73,
Don, WB5HAK
Actually, it says the end of NEXT month
73, Ross N4RP
--
I just heard about some ear buds which are quite efficient. They use multiple
drivers for each frequency ranges.
Here is a link to a description of them:
http://news.cnet.com/8301-13645_3-20005384-47.html
More here:
http://www.jhaudio.com/store/
I think it would be fun to test them in the
So it does!!! I stand corrected and that should help with the purchase
Chris had in mind, whether he chooses July or August!! Thanks for telling
us, Ross.
73,
Don, WB5HAK
- Original Message -
From: Ross Primrose N4RP n...@aiko.com
To: Don Cunningham wb5...@martineer.net
Cc: Chris
Yep,
The price is also very reasonable, just ordered mine ;-)
Kevin Rock wrote:
I just heard about some ear buds which are quite efficient. They use
multiple drivers for each frequency ranges.
Here is a link to a description of them:
http://news.cnet.com/8301-13645_3-20005384-47.html
Art,
That sounds suspiciously like a capacitor that is breaking down
somewhere between the product detector output and the
speaker/headphones. As such it is going to be difficult to locate. Of
course, my guess could be wrong, and it could be coming from somewhere
ahead of the Product
On Wed, 14 Jul 2010 12:01:30 -0700 (PDT), Bill W4ZV
btipp...@alum.mit.edu wrote:
I second that. I wonder why they don't label them as the width they
really are?
Tom, N5GE
K3 #806 with SUB RX, PR6,
KRC2 and K144XV
K3 #1055 with PR6 and XV432
W1, 2 W2's and other small kits
QCWA Life Member
Hi All,
I am the proud new owner of a k2, ser# 2676
I have torn it apart and its been built really well. The only curious thing
is the mic plug is a little wiggly and the 2 threaded standoffs next to the
mic plug do not seem to be attached to anything, other than the board, as if
they are there
While I've seen many post regarding S meter calibration I have a question to
which I haven't found an answer in the archives.
Let's say I'm listening to a signal that's peaking at S7. I usually decrease
the RF gain so that, with no signal, the S meter reads about S5. This reduces
the
Neil,
That is quite normal. The microphone jack pins are secured to the
board, but there is some play between the pins and the shell/housing
of the jack.
The two standoffs are used as spacers to maintain the proper distance
between the metalwork and the front panel board - and as you
Incredibly interesting between-the-lines reading here.
http://www.wrtc2010.ru/press/R3_license_for_SVO.pdf
http://www.wrtc2010.ru/press/R3_license_for_DME.pdf
What I find amazing in these lists is that Scott Robbins,
the Ex-Product Manager of the Ten Tec Orion transceiver
product line, brought
Hi folks,
Just in case anyone is looking for some very simple ideas on packing up
some external AAs for the KX-1 or other small QRP rigs...
http://wilcoxengineering.com/projects/amateur-projects/42-bat-pak
http://w1pns.wordpress.com/2010/07/14/power-to-the-peanut-whistle/
With best regards,
Does anyone have the MCLoader program for the TelePost LP100 or -100A?
I am unable to obtain it from TelePost. Guess Larry's too busy; I've
tried him via email several times on this.
Please send direct to mzil...@verizon.net.
73 and TNX,
matt W6NIA
K3 #24
K2 #2810
You betcha, Dave! Remember the old commercial line for Dial soap, Aren't
you glad you use Dial? Don't you wish everybody did? Well, that's how I
felt about our K3s at WRTC. I was confident that I wasn't generating
significant phase noise, key clicks, mixer products, harmonics and other
crud. I was
Robert,
That is just the way the S-meter response works - it is the same on many
receivers - the S-meter will indicate higher when the RF Gain is reduced.
The K3 does have a cure, and that is to set the S-meter to ABS
(absolute) in the Configuration Menu (see the manual). With that
setting,
As I wrote in an earlier post, the 250 Hz filter skirts are
assymetrical, at least mine is. On one side, they are about right for
using a 250 Hz dsp setting but on the other side, they are wider. You
may also benefit from tweaking the filter center frequency which you can
do using the
The last count I saw had 49 K3's 16 MP's 16 Pro III's and only a
tiny scattering of newer Yakencom rigs. One Orion.
There would have been 51 K3's but a lightning strike took out a pair,
which were replaced on a hair-on-fire emergency basis with a pair of
old Kenwoods (850's ?).
On Wed, Jul
I wouldn't be surprised if weight and size had something to do with
their choice as well, though.
73,
Dave AB7E
On 7/14/2010 8:03 PM, Lu Romero wrote:
Incredibly interesting between-the-lines reading here.
http://www.wrtc2010.ru/press/R3_license_for_SVO.pdf
Increasing the RF gain does deflect the meter upwards. I should have mentioned
that there is an S3 noise floor. Here's the steps that I followed:
Tune a signal that's peaking S7 with RF gain fully CW
Tune away from any signal (S3 noise) adjust the RF gain CCW until the meter
reads S5
Tune that
Yes it does with respect to RF gain.
--- On Wed, 7/14/10, Don Wilhelm w3...@embarqmail.com wrote:
The K3 does have a cure, and that is to set the S-meter to ABS
(absolute) in the Configuration Menu (see the manual). With that
setting, the S-meter does not change with the PRE/ATT/RF Gain.
Check out the K6XX special, dual K3 shelf used at R31A:
http://sites.google.com/site/rtavan/amateurradio/k6xx-dual-k3-shelf
The photos were not intended to illustrate the majesty of this
ultra-portable shelf but if you squint you should get the idea. The
requirements were to:
1. Support two
Robert,
You are relying on your S-meter too much IMHO.
If you have an S-3 noise level, the first attack is to turn off the
preamp - if that does not reduce the noise level enough, then turn the
Attenuator ON.
If the noise level is still so high as to be bothersome, turn the RF
Gain control
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