Hi,
stumbled upon a bug (?) in FW 4.25
Situation:
- VFO's independant
- main on 20m USB
- sub on 20m CW
- both on AGC slow
- Antenna sub = MAIN
Trying to switch the sub RX to AGC-F:
- hold A/B for B SET
- Tip AGC
Expect that AGC of sub would switch to AGC-F ...
BUT... nothing happens, display
Let me ask a filter question for a different situation. I am
interested in receiving very-weak CW and currently have the 2.8 KHz
and 400-Hz 8-pole filters. Will narrowing the DSP bw down to 200-Hz
work as well as using a 200-Hz filter? There are no strong stations
either nearby or on the
The band appears to be independent of this apparent bug as I just tried the
same thing on 160. Same thing that Arie reports happens with My K3 as well -
running latest FW (4.25) as well.
Jim - W0EB
Hi,
stumbled upon a bug (?) in FW 4.25
Situation:
- VFO's independant
- main on 20m USB
Edward R. Cole wrote:
Let me ask a filter question for a different situation. I am
interested in receiving very-weak CW and currently have the 2.8 KHz
and 400-Hz 8-pole filters. Will narrowing the DSP bw down to 200-Hz
work as well as using a 200-Hz filter? There are no strong
Ed,
If there are no strong signals on the band or nearby your receive
frequency, then any filter, even the stock 2.7 kHz is sufficient. The
only purpose of the roofing filter is to keep strong signals out of the
receiver passband so they do not activate the AGC and de-sense the
receiver
It doesn't seem like the VFO center freq on the K3 is making it's way over to
my P3. At the top, in the center, it always read 0.00 for a freq. The RS232
to RS232 cable is attached firmly and I assume it's communicating at whatever
BAUD the K3 assigns. Yet, there is NO center freq. listed on
Gee, mom, why didn't you insist that I try diversity reception sooner?
After reading a review here, I ordered and installed a Pixel RF PRO-1A active
loop antenna on an RCA VH126N rotor above our porch enclosure as my
receive-only antenna. All promised benefits - spotting stations, diversity
On 2/9/2011 8:28 AM, Wayne Burdick wrote:
Ralph,
You're right: even if the filters don't have matched offsets, you can use
diversity mode.
But the main and sub synthesizer frequencies will usually be separated by a
fraction of a Hz if the offsets are different, leading to a rolling sound
I see that others have told you that you can narrow the DSP and it will be just
as good as
long as there are no nearby signals greater than about S9+20.
Let me add that a huge improvement in copyability of weak CW can be gained by
using the
APF in current firmware. It has a bandwidth (I
I agree with both Don and Bill. There are really two issues:
In the presences of just noise, the DSP with a wider crystal filter is
adequate. The additional noise reduction of a narrow crystal filter is
negligible. (QRM is another matter.)
The brain/ear system, at least for many operators,
Don,
Thanks for the advice. I will leave the ESD parts as they are. I was
mainly going to use the plastic containers for other items like
capacitors, resistors and misc hardware that can be misplaced. In your
experience what should I concentrate on the parts inventory?
73,
Ed KE7HGA
Hi Bob,
Good idea, I have already sorted them by type so hopefully that will
eliminate any trouble. Finished the parts inventory so now it's time to
get started.
73, Ed
KE7HGA
On 2/8/11 6:31 PM, Robert Harmon [via Elecraft] wrote:
Ed,
Be especially vigilant about screw type/lengths
I've noticed this effect myself. At super narrow bandwidths, the
signal and remaining noise are both essentially on the same frequency.
With nothing else around to provide a base-line reference, discrimination
becomes a function of real-time delta power measurement rather than tone
On 2/9/2011 8:23 AM, Scott Ellington wrote:
The additional noise reduction of a narrow crystal filter is negligible.
Right. While a narrower filter reduces the noise bandwidth, the ringing
of a filter with steeper slopes may increase the effects of impulse noise.
(QRM is another matter.)
http://www.youtube.com/watch?v=Wbj76DVuAoo
This is a video tour around R9DX (aka UA9CLB) contest position (sorry all
the talks are in Russian). The tour includes almost all of the antennas and
2 x K3 set up in SO3R configuration.
Just thought it might be interesting for some of the reflector
But you don't want the equalizer in digital modes as that messes
up the response and results in poorer decoding. The only change
that makes sense in any of the digital modes is (flat) level and
that can be done with CONFIG: LIN OUT.
73,
... Joe, W4TV
On 2/7/2011 2:19 PM, Brian Alsop
The words would seem suggests that you have not actually used the
250 Hz filter, or have not used it much. I HAVE used both 250 Hz
and 400 Hz 8-pole filters extensively, and I do NOT feel that the
250 Hz filter is too narrow or that it requires rather critical
tuning.
No, I have not used
If one introduced say 6 db in the segment covering 2KHz and up to the
next equalizer breakpoint, I don't see how this can mess up decoding.
The gain increase is constant in the segment.
No, the gain is not constant across the segment, it is tapered so that
setting two adjacent ranges to
There was no way to know from the documentation which
type of equalizer the K3 has inside.
Any multi-band EQ beyond two bands - e.g, other than simple high
boost/cut and/or low boost/cut designs - must, by definition, be
parametric. I don't think the manual needs to specify the type
of EQ
The 250 Hz filter has a nominal -6dB bandwidth of 350 to 370 Hz
(see plots at http://www.elecraft.com/K3/filter_plots/250.gif and
www.inrad.net). The 400 Hz filter has a nominal -6dB bandwidth
of 430 - 450 Hz (plots at the same sites).
Since the ultimate selectivity is generated by the DSP,
Bill,
The 500 Hz figures were an older set provided by someone else (I
can't recall now - after more than three years). My subsequent
measurements of four 500 Hz, 5-pole filters show slightly better
performance. Those measurements average about 490 Hz at -6dB
and around 1500 Hz at -60 dB.
The
We'd like to congratulate David Elliot, W6BK, who led all other U.S.
stations in VP8ORK band/slot count, with 18. David used his K3, and
the VP8ORK effort used seven K3s. (Some EU stations worked them on all
21 band/slots, but I don't have any information on these stations
beyond that.)
Vic and all who replied,
I kind of cheated when I made my inquiry. I omitted the fact that I
was actually asking about copying eme CW (though some of you may have
guessed). I am the only station in Alaska that regularly operates
2m-eme. Since Alaska counts both for WAS and DXCC that makes
Everyone saw this???
Ten Tec [made in China] pre-built
Two Band CW QRP Transceiver - 40/20 Meters
http://www.tentec.com/index.php?id=193
Also has a 40/30 meter option..
Original KX1 by Elecraft
__
Elecraft mailing list
Eric,
David is first only in CQ Zone 3 part of U.S. There are 8 stations with 20
count in CQ Zone 5 part of U.S. and 10 stations with 20 count in CQ Zone 4 part
of U.S.
I am sure many of these stations used K3 to work VP8ORK.
73,
Igor, N1YX
- Original Message -
Hi Igor,
Yes, I just realized this. Thanks for the correction. I'm not sure
which of the stations in other zones had K3s.
I can attest to the fact that it's harder from Zone 3 :)
73,
Wayne
N6KR
On Feb 9, 2011, at 10:54 AM, k.i...@comcast.net wrote:
Eric,
David is first only in CQ Zone 3
Hi Chuck,
This was recently reviewed by QST. Since I'm totally biased, I'll
recuse myself from the discussion, but suffice to say there are major
differences between this rig and a KX1 :)
73,
Wayne
N6KR
On Feb 9, 2011, at 10:52 AM, Chuck Mabbott wrote:
Everyone saw this???
Ten Tec
Any multi-band EQ beyond two bands - e.g, other than simple high
boost/cut and/or low boost/cut designs - must, by definition, be
parametric.
Not quite. From a user point of view, there are two types of multi-band
equalizers -- graphic, and parametric. A graphic equalizer has filters
that
It sure does, but note it's two bands instead of 4, no built-in ATU, no
variable bandwidth I.F. filter (and, shoot, not even a built in light to
read notes by in the field ;-)
Just proves that all pretty faces aren't the same.
What does catch my eye is the linear regulated 12V wall wart they
Ten Tec [made in China] pre-built
Two Band CW QRP Transceiver - 40/20 Meters
http://www.tentec.com/index.php?id=193
Also has a 40/30 meter option..
No, not an option. You have to buy two of them: 40/20 plus 40/30 to get
40/30/20 And no fun of building your own rig!
73/2 de Peter,
Gee, mom, why didn't you insist that I try diversity reception sooner?
After reading a review here, I ordered and installed a Pixel RF PRO-1A
active loop antenna
I bought one also... business must be picking up at Pixel.
The loop is everything I could have wanted, works superb, hangs from
And of course you have all the advantages of a rig made in CHINA.
Steve
N4LQ
- Original Message -
From: Chuck Mabbott crmabb...@comcast.net
To: Elecraft@mailman.qth.net
Sent: Wednesday, February 09, 2011 1:52 PM
Subject: [Elecraft] Look familiar? Elecraft vs Ten Tec
Everyone saw
Hmm,
Looks like N4NN and a bunch of other NA's with 20 band/slots might
have something to say about.
The top seven with 21 are all SA stations, this one also with a K3.
I don't think any of us make any boast about that though, rather
like shooting fish in a barrel from down here (for a
Tnx for the suggestion Joe: The KX1 needs something closer to a 1-amp
supply. It's rated at 800 mA depending upon supply voltage and power.
I have some old 12V transformer type wall warts around here too, but aren't
regulated - running up well above 15VDC unloaded - and are limited to about
500
W6BK is shown at the head of the CQ ZONE 3 tabulations at 18, not USA.
The listings show the max # band slots for USA stations to be at 20.
N4NN,N4BAA,K3ZXL,W6XA,K4XP,K4WZ,AB1V,and N3XX are at 20 for zone 5.
K5RK,W5UN,W5IZ,K8LEE,K5AR,AG9S,N8TR,N0XA,KN50,W4NL are at 20 for zone 4.
I apologize if
Proud to admit my 20 slots of VP8ORK were done with two separate rigs...both of
them were...K3s. GRIN
73 de al, W5IZ
From: Brian Alsop als...@nc.rr.com
To: elecraft@mailman.qth.net
Sent: Wed, February 9, 2011 2:25:44 PM
Subject: Re: [Elecraft] W6BK's
Wayne,
No problem...glad to celebrate the sufferin 6s ;)
The K3's APF feature and excellent adjacent signal rejection allowed me to get
a
160 QSO with VP8ORK on Friday night of the 160 contest...with big USA CQ
machines and some awful nearby clix from non K3 rigs.
I do not think this
Hi Dohn,
On Wed, 2011-02-09 at 14:14 +, Dohn Smythe wrote:
It doesn't seem like the VFO center freq on the K3 is making it's way
over to my P3. At the top, in the center, it always read 0.00 for a
freq.
It sounds like there must be something wrong with the RS-232
communications
Ahh ... you mean like your cellphone, DVD player, most of your
television, much of your computer, and at least some of the components
in your K3?
The country of origin of any product is not the issue ... the integrity
and competency of the company that made it, the quality and reliability
of
Guys,
Let's end this thread now.
Country bashing etc. is way outside of the list guidelines.
73, Eric
Elecraft List Moderator
Ahh ... you mean like your cellphone, DVD player, most of your
television, much of your computer, and at least some of the components
in your K3?
The country of
I made it to page 15 of the manual and am installing the capacitors on the
Control Board. My question is the capacitor C4, 0.47 (474), if I have
identified it correctly, has lead spacing that is wider than the PCB pattern
and is a bit larger then any other non- Electrolytic capacitors. It is
Could somebody in the UK please tell me how much Import Duty (roughly) one
has to pay if one buys a factory built K3 (100 watt version).
With thanks,
73,
Geoff
GM4ESD
__
Elecraft mailing list
Home:
Hello!
I just had to resubscribe to share the excellent news. I sent my K3 #1540 back
to
the factory 1.5 weeks ago for updating with all hardware updates since it came
out.
I received it yesterday and it is installed again and running better than ever!
When
they said it probably would
Hi all,
Well I have a Win 7 64-bit op system and went to the Prolific website
and downloaded the driver for the USB-Serial adapter claimed to be OK
for Win 7 64-bit. The install failed because it couldn't read an inf
file. Ideas anybody?
Thanks,
Fred
KE7X
Fred Cady
fcady at ieee dot org
Just wondering here. How much part to part variation do devices like this
display in their gain characteristics? If I had ten of these transistors, is
there a good chance I could identify one with significantly better gain
and/or power efficiency than the average? Would a simple measurement of hfe
Of course I meant to say they've developed TRX-PAN jointly (not TRX-Manager).
Barry N1EU wrote:
Actually, N8LP deserves a good share of the credit along with F6DEX.
They've developed TRX-Manager jointly.
--
View this message in context:
So, I updated my K3 and P3 firmware last night to the latest versions. These
are:
K3 MCU 4.25
FPF1.14
DSP1 2.71
DVR 1.03
P3 1.00
Now, after the firmware updates, first the K3 and then the P3, everything
seemed to be working fine. But, the P3 is operating
W7GJ, Lance wrote:
But when I noticed last week that the
most recent update to TRX-Manager included support for the new TRX-PAN, I
installed
the LP-PAN and E-MU sound card and am off to the races with TRX-PAN! What
a great
tool this will be to use during the upcoming Es season on 6m!
Here's some info to read:
http://elecraft.365791.n2.nabble.com/KX1-Q6-question-td662532.html
and here, in this erratum superseded by the revision E manual which shows
the changeover:
http://www.elecraft.com/manual/KX1_Owners_Manual_Errata_Rev_D-1.pdf
It seems that Elecraft went from a
You will have to pay Local VAT on the price (including shipping) + a
handling fee imposed by the shipping company (usually fairly small ) on
importation to the EU
there is no 'Duty' on amateur radio equipment coming into the EU
providing the correct tarrif codes are used and the paperwork is
The MFJ 259B antenna analyzer is a pretty good piece of equipment and God
Bless them MFJ also sells some useful components. I wonder if HyGain would
be around at all if not for them. I am glad that MFJ is with us and feel
they would be sorely missed if they should ever disappear.
Download the latest Errata for the P3 manual from the Elecraft website.
It documents the fixed-tune mode and other things you are observing.
73,
Lyle KK7P
... Can someone point out major areas in the documentation that might have
changed?
Ed's reference to weak signal copying is probably different than any
of you have ever experienced, with or without QRM.
He's concerned about copying off the moon, EME, signals that are just
above but mostly just below ESP level in a sky noise environment.
My experience, in listening for, and
Ed,
If it is marked 474 it is the correct value. If the lead spacing is
just a bit off the nominal 0.2 inch spacing, just form the leads a bit.
If it is vastly different, ask at pa...@elecraft.com - I guess it is
possible that someone obtained a same value capacitor from the wrong
bin, or
On 2/9/2011 11:07 AM, Wayne Burdick wrote:
Hi Chuck,
This was recently reviewed by QST. Since I'm totally biased, I'll
recuse myself from the discussion, but suffice to say there are major
differences between this rig and a KX1 :)
Totally biased? Come on, Wayne! Way more differences than
Fred,
DO your windows update found in start menu in control panel. That should
fix it.
Bill
K9YEQ
-Original Message-
Hi all,
Well I have a Win 7 64-bit op system and went to the Prolific website and
downloaded the driver for the USB-Serial adapter claimed to be OK for Win 7
64-bit.
There are other differences that are not apparent on the front panel.
No CW keying waveform shaping, for one.
Ron AC7AC
-Original Message-
Totally biased? Come on, Wayne! Way more differences than show in the
photos. I got a chance to fool with one briefly. What I noticed:
No
Chip,
If your goal is to get more than 4 watts out of your KX1, I would
caution against trying. If you are attempting to obtain more power when
running with internal batteries, it is fine to try it, but when
operating with a 13.8 volt power source (or any other voltage) and the
power is
Leigh,
Elecraft is currently shipping KX1s with the 2SC2166 again. I have
built 4 in the last month and all 4 have that transistor.
The thermal pad provides better heat conduction and should not be
eliminated if a plastic tab transistor is used - only the shoulder
washer is eliminated.
I recently purchased my 2nd K3 from a fellow near the factory and had it
hand delivered to Elecraft for some hardware upgrades. I decided to have
the sub RX removed by Elecraft and packaged as they would a new unit. It
remains in an un-opened sealed package, and of course, it is, as Dale
At 03:25 PM 2/9/2011, Brian Alsop wrote:
The listings show the max # band slots for USA stations to be at 20.
N4NN,N4BAA,K3ZXL,W6XA,K4XP,K4WZ,AB1V,and N3XX are at 20 for zone 5.
K5RK,W5UN,W5IZ,K8LEE,K5AR,AG9S,N8TR,N0XA,KN50,W4NL are at 20 for zone 4.
I used one of my two K3's for all 20 of my
Thanks Leigh Don,
I'm not as concerned about maxing output, though getting 4 watts on 20
meters (like I'm getting on 80 meters) would be nice. I do like to
experiment a little, so trying the 2SC5739 would be interesting.
I am interested getting some idea about part to part variability. I have a
Nice work, Pete!
Wayne
On Feb 9, 2011, at 5:36 PM, Pete Michaelis - N8TR wrote:
The listings show the max # band slots for USA stations to be at 20.
N4NN,N4BAA,K3ZXL,W6XA,K4XP,K4WZ,AB1V,and N3XX are at 20 for zone 5.
K5RK,W5UN,W5IZ,K8LEE,K5AR,AG9S,N8TR,N0XA,KN50,W4NL are at 20 for
zone
Chip,
My experience with the KX1, K1 and K2 indicates that you will find
little variation in power gain, even when the hfe of the PA transistors
vary considerably. There are design parameters such as the collector
load resistance that swamp the variations - and the PA output circuit is
K3/100 #282,worked 5 bands,3 modes and 9 slots.
17m,20m,30m,40m and 80m.Higher bands not heard.
Power 100W. Antenna--80m almost full-size dipole.
My 3el Steppir is temp.qrt,awaiting spares.
I do have sub-rx with 400Hz in both rx. Also P3.
Depending on Dx locn. 2nd rx is of no use if you
cannot
I also asked this question on the N1MM reflector. I am using N1MM COM1 port
to control the K3. I have N1MM starting the MMTTY engine but it cannot key
the radio because the COM1 port is already being used to control the radio.
How do you K3/N1MM users interface the MMTTY engine?
Thanks
73 Joe
Hello to all people,
I have a problem with the XV144. After a few minutes of being connected
gradually loses sensitivity and transmit power to be minimized. This is
repeated every time I turn on after having been give a few minutes off.
The transverter I use with a Kenwood TS-850
73 de Amadeo
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