That list looks to be pretty much in favor of LiFePo4. Highest energy
density is only one factor; overall practical use I would judge to be
more important, and safe.
...robert KE2WY
On 21 Jul 2021 18:31, Louandzip via Elecraft wrote:
Certainly there are pros and cons. Here a list of some o
Doug...
Before buying the lead-acid battery, investigate the Lifepo4 battery
custom developed for the K2. Much lighter and more hours of operation.
https://www.batteryspace.com/custom-lifepo4-18650-battery-12-8v-4500-mah-57-6wh-7a-rate-w-pcb-and-connector.aspx
Also, search the archives for th
Does the choke cause a significant sag in the antenna? For 40m maybe
not; my 80m dipole with a choke looks like a V antenna, and I'm
reluctant to increase the tension in the support ropes to the point
where the the antenna starts to flatten out.
...robert
On 6 Jul 2021 02:30, Jim Brown wrote:
Jerry...
I'm not an expert on the K2, just a die hard fan. Others will advise you
on the upgrade(s). I'm pretty sure the upgrade "kits" are available from
Elecraft. That said, once you're satisfied with your upgrade you can go
all the way a purchase the complete, current kit from Elecraft and
It seems that there are two ways of running grounding wires in the
shack: FAN - from a common ground point, individual grounding wires are
run to each piece of equipment; LINKING - a ground wire is run from each
piece of equipment to the next and eventually ending in a common ground
point. What
I'll second/third Thunderbird as a excellent email client. I've been
using it for 15+ years, and I've never been disappointed or frustrated.
It's power and flexibility are truly note worthy.
...robert
On 1/4/2021 03:04 PM, Phil Kane wrote:
On 1/4/2021 4:11 AM, Lyn Norstad wrote:
I have never
Another good one:
"It's not what you don't know that's the problem, it's what you're sure
about that ain't so."
On 12/24/2020 03:56 AM, Phil Kane wrote:
On 12/23/2020 4:35 PM, Don Wilhelm wrote:
I really like that quote from Albert Einstein.
Ignorance can be cured with information, but st
ert G Strickland via Elecraft
mailto:elecraft@mailman.qth.net>> wrote:
What is the indication that the XG3 battery is low?
..robert
--
Robert G Strickland, PhD ABPH - KE2WY
rc...@verizon.net.usa
Syracuse, Ne
What is the indication that the XG3 battery is low?
...robert
--
Robert G Strickland, PhD ABPH - KE2WY
rc...@verizon.net.usa
Syracuse, New York, USA
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Help: ht
the
shack...but my K2 built over 20 years ago is still here.
John K7FD
On Nov 20, 2020, at 5:41 PM, Robert G Strickland via Elecraft <
elecraft@mailman.qth.net> wrote:
John...
Jim has the resume to back up his opinion(s) which I do not have. His
view point always merits serious co
John...
Jim has the resume to back up his opinion(s) which I do not have. His
view point always merits serious consideration. For myself, building the
K2 was/is one of the "peak experiences" I have enjoyed as an amateur
radio operator. While I now use a K3s - and it is a "better" radio - I
ha
Carlos...
The numerical values associated with the K2 filter settings are
approximations, used mostly for reference when adjusting the filters.
They do not indicate the "exact" filter bandwidths, etc.
Aligning the K2 filters is best accomplished following the instructions
on Don Wihelm's sit
--
Robert G Strickland, PhD ABPH - KE2WY
rc...@verizon.net.usa
Syracuse, New York, USA
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I recently received an email from "World Amateur Radio Contesting
Association" informing me that my world ranking [in contests] had just
increased 500 or so places. This sure sounds like a scam to me, but
thought I'd check around before trashing it. Anyone know anything about
this one? Thanks
Thanks for the many replies. I should have mentioned that the wire to be
stripped comes from Elecraft in the K2 antenna tuner kit. Elecraft
recommends the solder pot or the solder iron; they discourage using a
lighter/flame.
...robert
On 6/12/2020 02:02 PM, Robert G Strickland via Elecraft
Here's an old problem that I've never solved: how to strip the enamel
insulation from wires for winding toroids.
The instruction say:
-dip in a solder pot which I don't have
-use a soldering iron to, presumably, burn the insulation off which has
never worked for me.
Leaving soldering pots asi
I'd appreciate one/some references for getting into battery and solar
power for portable operation. Thanks in advance.
...robert
--
Robert G Strickland, PhD ABPH - KE2WY
rc...@verizon.net.usa
Syracuse, New York, USA
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Elecraft mailing l
I once spent 15+ years racing bicycles, officiating and promoting races.
During the same period lots of bikers tried their hand at building bike
frames. This required design, fabricating brazing jigs, and the actual
torch work. A few became known builders while most just gave it up as
too compl
Mike...
When I tested for my general, vintage 1960, I had to receive a five
minute plain text code message with no errors for one minute. But, I
don't remember having to send anything (I did have to draw the Colpits
oscillator, HI). And, for sure, no 5-letter groups. I was scared to
death, bu
--
Robert G Strickland, PhD ABPH - KE2WY
rc...@verizon.net.usa
Syracuse, New York, USA
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Post: mailto:Elecraft@mailman.
One such letter cancels a year of gripes. Be proud, Elecraft.
...robert KE2WY
On 3/2/2020 14:52, Wayne Burdick wrote:
Hi all,
I forwarded a few questions from HF Pack list members to a Special Forces
commander whose unit has been using KX2s in the field for three years. He
passed along the f
Congratulations, Mark...
The K2 is a wonderful radio, all the way from bags of parts to your
first on-the-air QSO. IMHO, it is one the historic radios in the history
of amateur radio. You may own or someday buy a "state-of-the-art" radio
but such a rig will never replace that spot in your hear
Jim...
I am curious about which "... things do occur..." that help along the
QRQ way.
Thanks for your interesting thoughts.
...robert
On 12/29/2019 03:16, Jim Danehy wrote:
The electrical pulses from your ear to your brain travel at extremely fast
speed.
The speed of light in a vacuum is
There is a constant refrain about "communicating with far away places."
No doubt that has been one attraction of our hobby. For myself, I was
never particularly interested in "communicating." For me it was mastery
of a technical environment. Communicating was just the proof that the
environment
Mike...
I have this connection working. However, I use a microHAM CW interface
between the radio and computer with its router software [sets up virtual
ports and WinKey functionality] . This setup works cleanly and reliably.
I'm no expert in this area, but my reading here on the list prompts m
I have read with interest the various postings on this thread. To pick
one out, Dave AB7E's analysis is, IMHO, spot on. As times roll on,
various aspects of cultural life change, also. "New technologies" of
whatever form will naturally catch the general interest, while old ones
will diminish to
long as the actually operating pitch is acceptable and
tunes right. But... that's an itchy way to do things, and I'd like it to
be "right."
...robert
On 10/21/2019 23:40, Robert G Strickland via Elecraft wrote:
When using SPOT to have the radio tune to a received signal,
When using SPOT to have the radio tune to a received signal, the
following is the result: the radio tunes to the received signal
correctly as indicated by the CWT graph, but this frequency is some
50-100cps below the selected side tone frequency. In other words, after
auto tuning, if PITCH is s
I follow those who counsel and implement "caution" with all the
modern/current internet connections and digital wonders. Just because
something is possible doesn't mean it's wise. I have had one - yes, one
- virus infection in 34 years of being online with minimal firewall and
virus protection.
do CAL PA TEMP - set the value at
your room temperature in degC.
73,
Don W3FPR
On 9/20/2019 2:33 PM, Robert G Strickland via Elecraft wrote:
I cannot get the fan in the 100w module to spin at any setting of the
fan control option in PA/SEC/fan. I have not looked back there when
operating, so
I cannot get the fan in the 100w module to spin at any setting of the
fan control option in PA/SEC/fan. I have not looked back there when
operating, so don't know if fan is spinning up when the amp starts to
get warm. Suggestions? Thanks.
...robert
--
Robert G Strickland, PhD ABPH - KE2WY
rc...
I have K3S #11832 factory assembled/tested.
Came home, worked well for several month plus and now this...
On start, I get error message PA1. When checking the
it indicates 57C upon a cold start. When trying to calibrate the PA
temp, the available adjustment range varies between 57C to 97C which
Don...
I got one of the original Clifton Lab boards and installed it in my K2
[after you had serviced the unit]. Installation required a choice of
pick off points: right after the first mixer, and somewhere else a bit
more isolated [don't have the instructions before me]. I chose the
first. I
sub- that's not there in the
main. That's it for the moment.
...robert
On 7/2/2019 00:02, Robert G Strickland via Elecraft wrote:
I put "problem" in quotes because it's not clear where the "problem" is:
me or the radio.
I recently purchased an Elecraft as
I put "problem" in quotes because it's not clear where the "problem" is:
me or the radio.
I recently purchased an Elecraft assembled and tested K3S with a
subreceiver and its own 400cps filter. The main receiver has the
following filters: 2.8, 1.9, 500 & 200. When I listen to both receivers
t
Will the K3s continue to be sold? The Japanese manufacturers sell
several radios at different price points with different specifications.
Would it be able and profitable for Elecraft to keep the K3s in production?
...robert
--
Robert G Strickland, PhD ABPH - KE2WY
rc...@verizon.net.usa
Syracuse
Hank...
I just bought a K3S with subreceiver. Now that I've seen the K4 I'm glad
I got a K3S. I'm sure I could learn every bell and whistle of the new
unit, but would rather operate in my small way and leave the
communications engineering stuff to others. I'm glad that Elecraft
maintains its
K3 Ser# 6232 for sale
100w amp module
New synthesizer
No filters or other add-on modules
Frank Kady K3 manual
Elecraft K3 operating manual
Just back from Elecraft where it was brought up to date, tuned, and
given a clean bill of health.
"Equals or exceeds original specifications."
Elecraft ma
Keep it modular.
Keep the "basic unit" simple.
Focus on performance, not bells and whistles.
Keep the UI simple and direct, functional, not "cute."
Remember that there's no "forever upward;" asymptotes do exist.
Investigate how the price can be brought down [if at all] without
sacrificing perform
near 4914.3 kHz.
Make certain when aligning the filters with Spectrogram you use a source
of wideband noise. If you are using 'antenna noise', be certain there
are no signals nearby.
73,
Don W3FPR
On 4/10/2019 9:28 PM, Robert G Strickland via Elecraft wrote:
I have aligned my K2 cryst
I have aligned my K2 crystal filters with Spectogram many times, but
this time I've run into a problem that I can't figure out.
Using Don's [and the manual's] instructions, I can align F1,F2,F3 in
decreasing bandwidths. All works as per expectations. On F4, the
alignment goes "ok," [as per Spe
Some thoughts on the K4...
Make/keep it modular. Start with a basic radio that provides an
excellent electronic foundation for whatever builds on top of it. The
model in this respect is the initial K3. This allows for flexibility in
configuring a radio that can accommodate the different
needs
A friend who was slowly going blind commented: "Blindness cuts you off
from things; deafness cuts you off from people." For most folks most of
the time, deafness is gradual and therefore unnoticed - for the most
part. The world slowly becomes more distant, the deafening person more
isolated. Do
Dick...
I've used ReSound for about 10+ years. I'm on my third pair - the latest
being brand new - and I've been very satisfied with their performance.
The newest pair has blue tooth connectivity to just about everything as
well as all the latest bells and whistles. There is an APP available
There's also the traditional maxim: Get an amp, meet the neighbors.
...robert
On 3/11/2019 20:07, Al Lorona wrote:
About two months ago I posted that amateur radio needs a tutorial, 'What to
expect when you get an amplifier'. As we see again and again here even basic
things like cables, connec
ode from others who have used it in contests. The
Elecraft 400cps filter seems to be slightly preferable to the 500cps
filter for reasons cited. Diversity is not an option here [limited
antennas]. Again thanks.
...robert
On 3/11/2019 01:59, Robert G Strickland via Elecraft wrote:
I am migra
I am migrating my K3 [Ser# 6232] to a K3S with a sub-receiver. In the
K3S main receiver I will have the following crystal filters from the K3:
2.8Kc 8-pole Elecraft
1.9kc ?-pole Elecraft
0.5kc 8-pole Inrad
0.2kc 5-pole Elecraft
I operate almost exclusively CW in contests and DX chasing. in cont
If/when I install a sub-receiver in my K3 [SN 6232] will I be able to
hear each receiver separately in each side of my stereo headphones? If
so, ok. If not, is there some way/work around to make this possible?
Is the DSP of the basic radio able to have two concurrent settings, one
for each of
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