On 08/12/2012 01:46 PM, M. George wrote:
There is one thing I
really miss from the 1000MP (the only thing really) and it's the auto
memory of the last frequency you used per mode / band.
Something similar has been discussed several times in past threads. I
agree. The general term is band
On 08/12/2012 03:27 PM, Erik Basilier wrote:
3. How many operators can truly say that they make use of iambic features?
I do too. I went from straight key to Iambic back in the 70s, or so. I
used a HB copy of the Heathkit HD-1410 Iambic keyer and a HB Iambic Key.
I decided that I would not
Yes, some sort of ground will greatly help.
A wire radial which is mostly touching the ground is a ground radial.
Ground radials are not resonant. The general rule for ground radials is
more shorter radials will work better then few long radials. The minimal
sweet spot is 16 radials, each 1/10
4:1 current Balun measurements can be performed using a XG3 signal
source and a K3 as the detector.
Configuration: K3 RX input, 10 dB attenuator, 50 ohm resistor from
attenuator inside conductor to 200 ohm Balun connector, 100 ohm from
attenuator shield to other 200 ohm Balun connector, XG3
Hi Bill,
Last year I replaced a decade old Astron SS-20 (field day 2011 death)
with a new SS-25. I prefer a quiet room and use the rig speaker. The new
SS-25 fan is too noisy, even hidden under the desk, for me. Much louder
then the K3/100 fan.
My plan is to try a Samlex 1223 or 1235 next.
On 10/27/2012 05:22 PM, Bill Ross wrote:
Question: Is the BL-2 Balun a current or voltage Balun?
The BL2 is a current Balun in both the 4:1 1:1 switch settings.
John KN5L
__
Elecraft mailing list
Home:
On 11/07/2012 11:00 PM, Wayne Burdick wrote:
effect on CW decode accuracy. Decode timing has also been changed
slightly to improve copy of code sent with shortened letter spaces--
typical of operators who rush their code, running letters closer
together.
To improved sending accuracy, consider
Will the KX3 MCU 1.06:
AUTOSPOT TUNES RIT: If RIT is on, AUTO-SPOT fine-tunes only the RIT
offset, leaving VFO As frequency untouched. (Auto-spot applies to CW and
PSK-D modes; it is enabled by turning on CWT. Tap SPOT to auto-spot.)
Be added to the K3 FW?
John KN5L
On 11/09/2012 06:46 AM, Don KA1KU wrote:
Lastly, about the power reading of the W2. With power set at 5.0 on K2/K3
the W2 reads 8 and 10 respectively. With power at 10.0 the W2 reads 15 and
17. This seems like a lot of difference. Could it be the K's are that much
out of calibration? Is
Hi Fred,
The Weight control adds the same time extension to both Dit and Dah,
therefore, as the weight changes, so will the Dit to Dah ratio.
I also find that the KX3 keyer does not have a Weight of 1 when set to
1.00, it's close to 0.80. The Weight control needs to be set to 1.20 to
have a
Unlike the K3 and K2, the KX3 has unequal external key on and off
delays. If using an external keyer, an 8 ms Keying Compensation will
adjust for correct key timing.
Example scope shots using a CMOS-4 keyer are here:
http://www.kn5l.net/KX3/kx3-external-key-timing.html
John KN5L
Hi Andrew,
On 11/10/2012 08:14 AM, Andrew Moore wrote:
Thanks John - I've been hoping to find some analysis of KX3 CW timing. Do
you know if the on/off delay differences are constant across keying speeds?
I have updated the page with a 30 WPM scope shot. Yes, the delay remains
constant.
On 12/7/2012 9:40 AM, keith pitts wrote:
Can someone please re post the Arm Chair Settings for the K3 that was
Hi Sherrill,
Elecraft list e-mails are all archived and never lost, the Google search:
site:nabble.com elecraft k3 armchair settings
Will find the e-mail which I believe that
Hi Randy,
I have plotted several of the ground radial count versus loss studies.
http://www.kn5l.net/GroundRadialStudy/#figure2
A plot of minimum radial length versus number of radials is:
http://www.kn5l.net/GroundRadialStudy/#figure4
The above may help you with your antenna selection.
John
My K2 has a 100 Hz difference in CAL FIL frequencies between cold and
full warm up. The 100 Hz difference renders the 200 Hz BW unusable until
the K2 warms up.
Is this typical, or do I have a component with excessive temperature
instability?
John KN5L
Hi Don,
My question is directed specifically at the CAL FIL BFO frequency being
100 Hz different between cold and warm. As mentioned, because the BFO
frequency is off by 100 Hz, the 200 HZ filter is unusable because a
properly received pitch will place the signal on the filter skirt.
This K2
Performed another test today, last night I aligned 200 Hz CW normal to
04913.08, First power up this afternoon 04913.21, after one hour warm up
(no transmitting) 04913.10.
John KN5L
On 07/24/2013 12:39 PM, John Oppenheimer wrote:
Hi Don,
My question is directed specifically at the CAL FIL
Hi Ray,
I believe that your observation is normal. I performed a fresh CAL FIL
alignment on the two SSB modes, and tried your test, I get similar results.
When on 21 MHz, USB has lower frequency noise, LSB has higher frequency
noise.
John KN5L
KX3 Cruise Ship portable:
http://www.kn5l.net/hp0/
John KN5L
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted
Will the recent KX3 ATU Improvements also be added to the K3?
John KN5L
* ATU IMPROVEMENTS: Tapping ATU TUNE now recalls stored LC settings for the
current VFO frequency prior to tuning, avoiding auto-tuning from scratch in
most cases. Also, ATU settings are now reloaded (if necessary)
The K2 and K3 have near perfect equal key ON/OFF delays. Therefore, the
K3 and K2 will not normally need external keyer delay compensation.
The KX3 (measured with MCU 1.50 / DSP 1.21) has about 8 ms key ON to OFF
delay. The delay is for both the internal and external keyers. (Breakin
mode, XMIT
Will the KX3 features:
- CWT mode enables FINE tuning
- SPOT with RIT enabled tunes RIT, not VFO A
be ported to the K3?
John KN5L
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
Corrections:
On 08/24/2013 06:53 AM, John Oppenheimer wrote:
Will the KX3 features:
- APF mode enables FINE tuning
- SPOT with RIT enabled tunes RIT, not VFO A
be ported to the K3?
John KN5L
__
Elecraft mailing list
Home
How many of you have an Elecraft DL1? It's an amazing piece of test
equipment for only $26 when coupled to an accurate DVM.
The DL1 is a simple 50 ohm dummy load with a peak detector diode. The
load on the diode is the input impedance of the voltmeter, normally
10 Meg Ohm, which results with a
On 09/03/2013 06:29 AM, Phil Debbie Salas wrote:
I also have some info in the “Presentations” section of my website at
www.ad5x.com.
Phil's The 43-Foot Vertical presentation is very well written and
contains a wealth of good information.
Phil references a 10 Ohm ground. Using the information
One way to quantitatively evaluate power versus probability of
communicating is to use the VOACAP Online tool:
http://www.voacap.com/prediction.html
The tool includes transmitter power at several steps, 1, 5, 10, 50, 100,
etc. Set the transmitter at your location and the receiver about 1300
miles
Hi Arno,
The Bioenno 12V/3Ah LiFePo4 should work nicely with your KX3 and provide
several hours of 10W operation.
I use a similar 3.3 Ah from
http://www.batteryspace.com/lifepo4cellspacks.aspx and have been quite
satisfied with it.
John KN5L
A better way is to connect a load with a known SWR.
Using a BNC-BP BNC Male to Stackable Binding Posts with three 100 Ohm
1W resistors in parallel, 33.3 Ohms, SWR should ~= 1.5.
Directly connected to the K3, ATU in bypass, 5W output, measured SWR = 1.1.
18 piece of coax with W1 Power meter,
An example evaluation of a rig's SWR meter, using two 200 ohm resistors
in parallel, SWR should be close to 2:1. Power set to 4.0 W. The KX3 and
W1 indicate SWR = 1.8:1.
http://www.kn5l.net/Elecraft/KX3-W1-SWR-p1010859.jpg
YMMV
John KN5L
The KX3 1.76 Beta has improved CW keying delay timing. The delay is 5 ms.
The Menu Weight control can be used to compensate for a 1:1 transmitted
weight up to 40 WPM.
Some Menu Weight values for 1:1 transmitted weight.
25 WPM, set weight to 1.15
40 WPM, set weight to 1.25
Set external keyer
Looks like fun Phil! Nice pictures of your antenna and rig in your
article http://ad5x.com/images/Articles/Portable%20Dipole.pdf
There needs to be a KX3 Portable Operations photos page in the
Elecraft web site.
John KN5L
__
Elecraft
If the capability exists, it would be nice if the PIC24F16KA102,
RCFGCAL: RTCC CALIBRATION AND CONFIGURATION REGISTER, CAL7:0: RTC
Drift Calibration bits were configurable in a MUNU parameter.
John KN5L
On 12/03/2013 08:45 AM, pkhjr wrote:
The accuracy of the clock is very bad, but what he hey
I too often use APF on both the K3 and KX3. I prefer tuning APF with 1
Hz steps.
The KX3 enables 1 HZ steps when APF is enabled. I miss that feature with
the K3.
A new feature request; when in SPLIT and VFO A at 1 Hz, leave VFO B at
10 Hz.
John KN5L
On 12/08/2013 04:48 AM, Bill W4ZV wrote:
I
Hi Joel,
Weight, on an Elecraft radio, is a ratio of the Dit and symbol space
time. With weight set to 1.00, the Dit period is the same time as the
symbol space time. As weight is increased, the Dit, and Dah, times are
lengthened by the ratio. For example, 25 WPM, the Dit time, in ms, is
defined
Straight Key Night is just a under two hours away:
http://www.arrl.org/straight-key-night
If you have a straight key, and maybe a vintage CW station, then it's
time to get on the air. Those of you that have a K2, then you may have a
vintage rig ready to go:
vin·tage
adj.
1. Of or relating to
On 12/31/2011 05:15 PM, Don Wilhelm wrote:
John,
If you think my fully upgraded (and packed with all options for a QRP
K2) original Field Test K2 SN 00020 will be replaced by a KX3, you have
another think coming.
Hi Don, obviously, your K2 #20, same as my K2/10 #7212, fits the
This thread has a count of 15. I thought I would squeeze one more in
before the end of thread is called.
Last year I performed some simple OCF Dipole investigations. My quest is
to make a 15/20 trapped OCF dipole to place in an asymmetrical location
in my attic. My rather incomplete notes can be
Using an oscilloscope to measure dot leading edge to dot leading edge,
therefore ignoring weight. K3 in TX mode. There is some timing jitter,
used average observed values. Using the formula DOTms = 1200 / WPM
K3 WPM ms DOT ms WPM
15 156 78 15.4
18 127 63.518.9
20
Hi Dana,
The 1500 Hz hole in SSB mode is an artifact of Weaver Demodulation.
Looking at the KX3 Firmware Information document, MCU 00.77, DSP 00.74,
3-6-2012: IF the KXFL3 is installed, Weaver demodulation is enabled when
HI-CUT is below 2.4 kHz.
John KN5L
Two of the SSB 2.1 BW pseudo standards are; Heathkit, 350-2450, and
Collins, 400-2500. Can the switch to Weaver demodulation be increased
from 2400 Hz to 2500 Hz? Allowing the two aforementioned pseudo standard
SSB bandwidths to use Weaver demodulation and FL2.
John KN5L
Google:
lifepo4 sla replacement
John KN5L
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by:
Hi Robert,
My post was general in nature.
For my KX3, I use an external 3300 mAH LiFePO4 pack from:
http://www.batteryspace.com/lifepo426650battery128v3300mah42wh7aratewpcb.aspx
Using the suggested 1.5A charger for above, the battery charge voltage
is 13.9V during the end of the charge cycle.
It may be that the Elecraft placement is based on decades old CW
convention/tradition. 1966 ARRL Handbook, Page 555, Controls
The majority of c.w. operators tune with the left hand, preferring to
leave the right hand free for coping messages and handling the key, and
so the receiver should be
According to:
http://www.powerwerx.com/anderson-powerpoles/powerpole-sets/15-amp-red-black-anderson-powerpole-sets.html
When two pairs are mated together, it takes approximately 3 pounds of
tension to pull them apart.
John KN5L
On 06/26/2013 07:08 AM, david Moes wrote:
10 Lbs? Ive used APP
Viewing the connector cutaway picuture, just above the section
Stainless steel spring in the page:
http://www.powerwerx.com/anderson-powerpoles/powerpole-sets/15-amp-red-black-anderson-powerpole-sets.html
note that the connector is locked-in between the spring and housing.
As noted before on the
K2 # 7212 completed it's first successful QSO with WB5ZAM on Sep 1 on
the 40M band. It is a basic QRP system. The ATU is still in it's factory
bag, and will be next. I will follow on with SSB, NB, analog
filter/clock, and 160 options.
John
I am a new K2 (#7212) user. I have been baffled by what I thought was my
inability to properly perform the frequency alignments. My last attempt
was to perform a factory reset and re-do PLL and BFO (Table 8-1 values)
calibrations.
I believe that I have found the issue, sometimes it appears that
I use the quick memories, M1 - M2, and have a CW and SSB start frequency
as recommended in the Owner's Manual on page 16
John
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
At the other end of the power and frequency spectrum, I worked T32C with
my new K2/10 7212 with 10 watts on 10M CW yesterday afternoon. The
antenna was an attic mounted 20/40 meter trapped dipole tuned with the
K2's Internal ATU.
I second the comment, thank you Elecraft for making fun to build
WB5GCX sent this on Jan 9, 2011, any comments?
The ability to work PSK and RTTY without a computer is SO cool...
I was just wondering if there are plans or any discussion on allowing a
portion of the P3 screen to show the K3 Text decode data for cw, RTTY,
and PSK31. I always assumed that would
I posted a similar RTTY P3 copy suggestion last Saturday, the 22nd. Look
for Subject: Text Decode on P3 screen? Which was a re-post of the same
question earlier in the year.
John, KN5L
__
Elecraft mailing list
Home:
Do you have your Quick Memories set up? For me they are at least as useful
as the band stacking registers I had on my previous radio.
Not really, as they only go back to the last saved location, therefore
requiring a save if one wants to go back to the last mode frequency.
It would be nice
SPLIT+2 is my second favorite MACRO
PF1 = SPKR+PH # Very useful if using the back panel phone jacks.
PF2 = SPLIT+2
The SPLIT+2 is so valuable, why is it not a standard front panel
setting? Maybe AB triple hit. Or a new option for the AB double hit to
also do the +2 and SPLIT on. And free up PF#
Based on the replies, the MODE button may not be used much once the
quick memories are set up.
Why not a CONFIG menu option which converts the MODE button to cycle
through two or four band memories. Three options to the MODE CONFIG
option; OFF, BM2, BM4.
John, KN5L
On 10/30/2011 05:40 PM, Ray Sills wrote:
Neither do I. What's a band stacking register?
Lots of descriptions can be found with the following Google searches:
band stacking registers kenwood pdf
band stacking registers icom pdf
band stacking registers tentec pdf
the pdf in the search will
and the 10 Quick Memories enable band
to band hopping with ease. The Quick Memories will go back to the last
used frequency on a band
Looking at the Config option MEM 0-9. Adding band stacking requires
having multiple memories for each band. The additions could be:
Add a config option to
1.2:1. So, why was the original ATU TUNE at 14.018 not good enough at
14.022.5?
My guess: the ATU memory transition is at 20Khz steps. I have wondered
where they were. You may be able to repeat the process if you clear out
the band's ATU memories, see the KAT3 configuration option, the last
Randy, I found the ATU memory step spacing in the Firmware Release Notes.
In release notes for MCU 3.03 / DSP 2.10, 3-17-2009:
* MULTIPLE KAT3 ATU DATA SEGMENTS PER BAND/PER-ANT.: 10 kHz
per segment on 160 m; 20 kHz on 80-12 m; 50 kHz on 10 m; 200 kHz
on 6 m.
John, KN5L
Interesting to me is position today that 2.1 kHz is narrow. For many
decades, a 2.1 kHz filter was normal, and sometimes only SSB filter.
Heathkit SB-101 etc 350 - 2450 (center 1400)
Collins KWM-2A etc 400 - 2500 (center 1450)
Sometime during the 90s, or so, the standard seemed to move
As I read the text, the shall operative words are: Amateur operators
shall ensure that their emissions do not occupy more than 2.8 kHz
centered on each of these center frequencies. This is consistent with
the ruling for each ~2.8kHz wide SSB transmitted signal to be within the
five 2.8kHz
Do I understand where the CW transmission actually is (600 Hz above dial
frequency)? Please explain.
If XIT and SPLIT are off, the K3's CW transmit frequency is the
displayed VFO frequency.
The users desired CW pitch frequency is set with the K3's PITCH setting.
If the received CW pitch
KX3 MCU 1.87 CW Key timing measurements:
http://www.kn5l.net/KX3/kx3-weight/
John KN5L
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post:
The XG3 manual
http://www.elecraft.com/manual/XG3%20Owner%27s%20Manual%20Rev%20D.pdf
Documents a technique to estimate MDS on page 15.
John KN5L
On 05/04/2014 07:34 AM, Brian Alsop wrote:
How indeed is MDS measured quantitively?
__
On 07/24/2013 10:59 AM, John Oppenheimer wrote:
My K2 has a 100 Hz difference in CAL FIL frequencies between cold and
full warm up.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http
I've built my K2/10 almost three years ago. My quest was to enable all
of the front panel buttons. I finally achieved my goal yesterday with
the completion of the KNB2. The KNB2 works as advertised!
A thank you to Elecraft for keeping the K2 on your order page.
Hi Bill,
Are you using; NR, IF NB, or dsp NB?
John KN5L
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by:
Hi Craig,
What you are describing is an antenna in the dipole class, an antenna
with two poles. Similar to an inverted vee rotated by 225 degrees. The
half wavelength for the sum of the two elements will determine the
resonant frequency. The total length will be near the classic 468/MHz =
length
There is a program, SmithSmith http://www.ae6ty.com/Smith_Charts.html
which can also solve the impedance at the antenna. Set the ATU L and C
and the coax feed-line as constants then adjust the antenna parameters
for 1:1 SWR at the input.
John KN5L
On 07/31/2014 10:02 AM, TF3KX wrote:
I can
I had no plan to have digital capability, but it's sure nice that the K3
(and KX3) have digital capability. W1AW/9 recently posted to LoTW, three
RTTY and one PSK31 QSOs confirmed. A nice group of digital QSOs on my
LoTW QSO page this morning. And thank you W1AW/ operators, it's been a
fun year.
Hi All,
I agree with Ron, the DL1 can be very accurate with a good DVM.
I have computed diode voltage loss using an attenuator. The results are
here:
http://www.kn5l.net/DL1-diode/
John KN5L
On 10/25/2015 05:36 PM, Ron D'Eau Claire wrote:
> The DL1 can be very accurate.
Having Fun:
A popular K2 CAL FIL method is using Spectrogram as documented here:
http://www.elecraft.com/Apps/new_fil_docs/k2_ssb_gram.pdf
Having an oscilloscope with a FFT math function, I wondered how it would
do with a newly acquired Elecraft N-Gen. Results: I was able to perform
the FIL
I performed some additional research, Johnny, VR2XMC, measured TP1 V at
4.82 back in December 2006. Maybe the 4.5 is a typo and should be 4.8:
http://elecraft.365791.n2.nabble.com/some-questions-of-W1-td442330.html
John KN5L
On 12/31/2015 06:22 AM, John Oppenheimer wrote:
> Hi Ed.
>
>
Hi Ed.
The W1 DC voltage calibration resulted with incorrect reading with my
W1. My hunch is that components have changed since Elecraft established
the TP1 DC calibration voltage almost a decade ago.
I have a KX3F with unchanged factory power calibration. Based on
comments from Wayne, the KX3
My general operating style is to use a CW memory REPEAT for sending CQ,
both at home and during field operations.
I sure would be nice to end the memory with a tap of the key and not
send an element. Both my new KX2 and KX3.
John KN5L
On 05/30/2016 06:27 PM, Jim Rodenkirch wrote:
> Could
Can the FIL default display "FIL ADJ" be replaced with the current
setting? This change will allow viewing the BW without the need to tune
the BW.
Using MCU 2.66 / DSP 1.48
John KN5L
__
Elecraft mailing list
Home:
Thank you Ed, this is the answer I've been waiting for:
John KN5L
On 05/20/2016 11:10 PM, Ed Muns wrote:
> I have been using a Begali Adventurer Mono on my KX2 SN 20 for several weeks
> now with no problem. The screws look short enough and are not anywhere
> close to the PCB.
>
> This morning
6 uH
>
> C: 1360, 680, 330, 164, 82, 39, 18, 10 pF
John KN5L
On 07/25/2016 04:36 PM, John Oppenheimer wrote:
> The command is:
> AK (ATU Network Values; KX3/KX2 only, GET only)
>
> Programmer's Reference Page 3.
>
> The KX3 L and C values can be found from the schemat
The command is:
AK (ATU Network Values; KX3/KX2 only, GET only)
Programmer's Reference Page 3.
The KX3 L and C values can be found from the schematic. Wayne sent an
email some years ago with the list of L can C values.
I don't believe that the KX2 L and C values have been published.
John KN5L
Hi All,
Here is a link to a schematic for the 3/4 A power supplies with the
added parts for external voltage protection:
http://www.ameradio.com/doc/Astron%20RS-3A,%20RS-4A%20schematic.pdf
John KN5L
On 07/21/2016 07:41 AM, Myron Schaffer wrote:
> It used to be that waythe RS linear models
Wireman 553 uses a 19 strand Copper Clad Steal (CCS) conductor which
results with very thin copper cladding. 553 is skin saturated at about
15 MHz. The loss at 1.8 MHz is approximately 0.21 dB per 100 feet.
http://www.kn5l.net/wm553/
Using EZNEC and SimSmith for the antenna below results with
501 ladder line #18 solid CCS copper thickness is 0.0717 mm
http://copperweld.com/sites/copperweld.com/files/w30ccs-ed5230.pdf
RF skin saturation is well below 1 MHz using the calculator:
http://owenduffy.net/calc/SkinDepth.htm
551 is #18, 19/30 stranded, #30 CCS copper thickness is 0.0178 mm
Hi Wayne,
Sure would be nice if while in TIME MENU, pushing "3" would set seconds
to zero. This would make it much easier to hack to WWV. Or to maintain
backwards compatibility, program "4" as a seconds hack button.
John KN5L
KX2 #80
__
Hi Paul,
There is a procedure for estimating MDS documented in the XG3 manual,
the "Measuring Receiver Sensitivity" section:
http://www.elecraft.com/manual/E740154%20XG3%20Owner%27s%20Manual%20Rev%20D2%20-%20ECO%2001887.pdf
I've performed this test and found my K2 to have a reasonable match.
The Heil site as some suggestions here:
https://www.heilsound.com/amateur/support/dsp-settings/all-things-elecraft
Using a K3/P3 to measure the response curve, I use:
-16 -16 -16 -2 +3 +9 +16 +8
John KN5L
On 11/09/2016 03:28 PM, k4mmg@gmail.com wrote:
> Any suggestions on what EQ settings
A K3/P3 can be used to measure the KX3 SSB TX bandpass. The process is
to speak random words for several seconds while monitoring with a P3 in
"Peak" mode. After about 30 seconds the display will stabilize.
The K3 filter width is 2.1 KHz 350 - 2450
Here are some measurements:
Hi Barry,
The tuner will have negligible compared to the transmission line
miss-match loss.
Take a look at the KX3 list messages:
https://groups.yahoo.com/neo/groups/KX3/conversations/messages/60190
https://groups.yahoo.com/neo/groups/KX3/conversations/messages/60192
John KN5L
On 11/03/2016
Using the DISP voltage, using internal battery, receive is 11.7V and 10W
in TUNE is 10.8V. a drop of 0.9V. The receive drop is a tenth or two, or
round down to a 1V total voltage drop during 10W transmit. The minimum
battery voltage would then be 11V or 3.67V per cell. Looking at
representative
Hi Wayne,
I'd like a change which sets seconds to zero when tapping the 3 button?
John KN5L
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post:
Hi Scott,
Measuring the KX2 DOT period with KYR-SP set to 32 WPM is 34.6 ms. Which
equates to 34.7 WPM.
KX2 #80
John KN5L
On 08/02/2017 12:49 PM, K9MA wrote:
> According to the RBN reports, my KX2 seems to send about 2 wpm faster
> than the set speed, like 34 vs 32. Has anyone else noticed
Hi Phil,
Yes there is a little difference.
One standard for WPM can be found in:
https://en.wikipedia.org/wiki/Morse_code
as T = 1200 / W or WPM = 1200 / T
Where T is dot duration in mS.
To remove weighting, using an oscilloscope to measure Dot and Space
time. The keyer is using the
This is the response I received from Elecraft support:
On 06/27/2017 01:34 PM, Elecraft Support wrote:
> To your question, yes, we are now using a drop of Locktite Blue (not
> Red) on the threads for the 2 screws that hold the round contacts in
> place.
John KN5L
On 07/24/2017 10:45 AM, KENT
On 06/19/2017 10:41 AM, Wayne Burdick wrote:
> - Running from a lower supply voltage (e.g., the 11 V internal battery)
> should reduce power dissipation
This is counter to what I had thought! But:
With external 13.8V input, power lowered to 5W at 3 minutes 48 seconds.
With internal battery, I
On 06/19/2017 10:41 AM, Wayne Burdick wrote:
> - Running from a lower supply voltage (e.g., the 11 V internal battery)
> should reduce power dissipation
With external 13.8V input, power lowered to 5W at 3 minutes 48 seconds.
With internal battery, at 8 minutes, the PA temperature was 60C.
Hi Linas,
My KX2 dropped from 10W to 5W at 3 minutes 48 seconds of key down,
starting at 25C.
John KN5L
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post:
Hi Wayne,
Testing the new logging feature in 2.77. A couple of suggestions:
When dumping the log using LG; can the dump stop after dumping the last
valid character, rather then a long string of "---" ?
Can the memory keyer operations be logged. Maybe just a M# or some other
character string
Hi Stan:
Post ten.
There are two ways to approach this, just put something up, or measure
and optimize. When using the KX3 ATU, both methods will provide similar
results.
An 88 foot Doublet and feedline is modeled using EZNEC and SimSmith. The
results found here:
http://www.kn5l.net/Doublet88/
Hi Mike,
Did you replace the uVerse modem recently? I had the same 40M problem
after replacing the modem. Google the issue, I believe you'll find
similar experiences.
John KN5L
On 08/25/2017 05:24 PM, Mike Pilgrim wrote:
> have TVI in my u-Verse TVs when using the
> K3 on 40 meters
May find some information about the issue here:
http://adslm.dohrenburg.net/uverse/
It will depend on which VSDL frequency is being used by the modem. My
modem seemed to pick the high end of 40 meters most of the time.
John KN5L
On 08/25/2017 09:16 PM, Jim Brown wrote:
> I can't think of a
Hi Elecraft list,
I've had a KX3 for over five years, never installed internal batteries,
never plan to.
I miss having a builtin clock. Sure would be nice to have a RTC board
option, no charging circuitry, with a button cell to maintain clock
time. And FW access to the time correction registers
Used the new FW during my early morning 40M CW session. Used KX2 #80
with external LiFePO4 battery and inline W1 Power Meter. Antenna SWR =
1.3. The W1 12W LED does turn on. Measured DL1 power is 11.8 watts.
Ambient operating temperature was 22 C.
Sent many CQs before receiving an answer. Had two
1 - 100 of 171 matches
Mail list logo
