I have an as-new Elecraft K-Pod for sale.. Looks perfect and works perfect,
just not into the contests any more. New from Elecraft $250 new plus shipping.
Mine is yours for $220 shipped stateside.. PayPal OK. 73s Jim K4JAF
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On 10/6/2016 2:03 PM, Richard Fjeld wrote:
Fred,
What is the typical winter temp when the radio works, but no display?
Guesstimating here ... our highs are currently in the high 60's/low 70's
[in the sun] and lows are running in the low 40's/high 30's [all degrees
F, we're going metric inch
(Please note something is happening to my use of Thunderbird email
client on my end, so I don't know what is being sent)
Yes Bill, I agree with you and the voltage assessment. Back a number of
years ago, mobile radios specified 13.8 Volts, and their performance was
greatly reduced at 12 Volts
Igor,
Minus 10C is about plus 14F, which is well below freezing. I would think
that was adequate for a good test of output at cold temps.
The experience that I cited about an early rig not operating for several
minutes was at about minus 30C or colder.
It may have been pre-vfo days, and could
It may be better to use an RF sensing switch or mechanical tie rather than
software. Any latency via software could damage or destroy your gear. SW
controlled switches in my view need to be tightly integrated to prevent
potential damage.
Sent from my iPad
> On Sep 24, 2016, at 7:20 AM,
Fred,
What is the typical winter temp when the radio works, but no display?
Also, you mentioned crystals not oscillating at cold temps. That may
have been happening in the past when I thought it was due to low gain in
the oscillator circuits.
Thanks,
Dick, n0ce
On 10/6/2016 1:32 PM, Fred
To answer the battery question. The battery was at about 11.5-12
volts and did not show noticeable voltage sag when transmitting
(SSB). Note that all measurements (power and voltage) were taken
using the internal meters in the cold K3.
73 Bill AE6JV
On 10/6/16 at 10:43 AM,
My mistake, I was thinking of the K3S transceiver.
John KK9A
Sent from my Smartphone.
On Thu, Oct 6, 2016 at 4:19 PM, Bob wrote:
> It is in the roofing filter manual, here:
>
> http://www.elecraft.com/manual/E740165%20Elecraft%20KXFL3%
> 20Option%20Rev%20A3%20-%20ECO%2001985.pdf
It's nice someone finally acknowledged my post about the battery as part of the
culprit.
I too have had LCD screens go blank in the cold. And I realize the electronics
have limits as well.
But note that many small low power radios are very sensitive to battery
voltage. If it's too low, the
It’s not particularly difficult to calibrate the filter. Since I built a kit
KX3, I already had an anti-static mat, and also had an XG3 signal generator.
You don’t need the signal generator, but it made things easy. The filter comes
with an small wire loop and pigtail that permits you to
It is in the roofing filter manual, here:
http://www.elecraft.com/manual/E740165%20Elecraft%20KXFL3%20Option%20Rev%20A3%20-%20ECO%2001985.pdf
73,
Bob
K2TK
On 10/6/2016 3:57 PM, j...@kk9a.com wrote:
What is the roofing filter calibration process? I do not recall seeing
anything other than
What is the roofing filter calibration process? I do not recall seeing
anything other than offset and gain settings in the manual.
John KK9A
From: Bob K2TK
I'd look at and consider moving the roofing filters up on the priority
list because of the calibration required.
73,
Bob
K2TK
Dick,
My experience operating K3 at temperature of minus 10C shows that there
were no noticeable drop of output power. I did not test it at lower
temperatures.
73, Igor UA9CDC
- Original Message -
From: "Richard Fjeld"
To:
Sent:
Also, IF you order the roofing filter for the KX3…. even with a kit purchase….
the factory will calibrate it for you, so all you need do is install the little
board. They have a test jig, so that the filter will be tested with YOUR
particular main board. Best of both worlds… save some money,
The best way, I think to answer your question is to base that on several things.
1. How comfortable are you in digging into the building process. Like Bob
said the experience is priceless.2. Monetarily, you have to way the
convenience vs the cost based on your ability to do the assembly.3.
On 10/6/2016 10:43 AM, Richard Fjeld wrote:
Someone posted with a question if the battery was cold. That may have
been pertinent.
Nearly all chemical reactions slow with decreasing temperature.
Batteries produce an electrical current through chemical reaction(s).
In the northern interior of
Igor and Ed,
I found your posts interesting. Thank you both.
The original thread was about a K3 operating in the cold below freezing
temps, and reduced power was observed. I think the question was asked if
we could answer why.
Someone posted with a question if the battery was cold. That may
I agree with Don on looking at the purchase sequencing. I'd look at and
consider moving the roofing filters up on the priority list because of the
calibration required. Per the manual page 1 if purchased even as a kit the
furnished roofing filter accessory is then furnished calibrated.
So
The roofing filters require some calibration. If they are factory-installed,
Elecraft does that for you. All the other options are exactly the same whether
factory-installed or user-installed.
wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)
> On Oct 6, 2016, at
The K144XV has been sold, pending receipt of funds.
The PR6, KXV3A, and two KSYN3's are still available.
Thanks,
John
W2ID
- Original Message -
From: w...@comcast.net
To: elecraft@mailman.qth.net
Sent: Wednesday, October 5, 2016 3:29:10 PM
Subject: FS: K144XV 2M Transverter
Hi Howard!
Google"Pro Audio Engineering" ... Howie sells a nice PS that will meet your
needs.
73!
Rose - N7HKW
elecraftcov...@gmail.com
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Help:
Brian,
The answer is YES, you can add any of those options later.
Review your operating aspirations to determine which options will
provide the most benefit for you, and in what timeframe.
If you have resonant antennas at the home station (or are willing to use
a manual tuner initially), then
Hi Brian,
Given your initial intent (KX3/KXPA100), later installation of any
option module for either unit is quite easy to do and all are
well-documented in installation instructions. The KX3 is designed as a
modular "package" and a lot of design intent went towards adding on as
the user
Hi Howard,
The Tenergy charger isn't an AC adapter. It is designed specifically to
charge the Tenergy pack used with the KX2. As a charger, its output
runs constant current initially, then it switches to a constant voltage
for the final charge push. This type of charger should NOT be used
Further to my earlier post I've decided to move forward and go with the
KX3/KXPA100 combo to replace my ft817 AND my Kenwood TS590. The ft817 has
already found its new home and my TS590 will soon be next. Again, it will be
nice to just have one radio for base and QRP on trips.
I priced out
I know where you're coming from, Mike. Like you I
built my own K2 from the ground up starting in
1999 and "completing" it in 2003 with the KDSP2
(and some other adds updates in 2014); I still use
the K2 regularly even with a K3/P3/KPA500 etc. My
favorite time in the hobby was building QRP
I am always impressed with the videos my son W3NCR does for his SOTAs or FD
ops. I keep telling him he should post the links here for others to see.
So, I am posting this link for him because Linda (K2QYL) and myself are
involved. Enjoy: https://youtu.be/KV5rYqaXuzA
--
John Fritze Jr
K2QY
With a change of din plug, can the Tenergy charger for the KX2 be used to
power the KX2 to full power. I would like to limit what devices I travel
with.
Howard AE3T
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Elecraft mailing list
Home:
I strongly agree, Mike - especially with that last sentence, "I just did
not expect Elecraft to adopt that attitude."
The K3 schematics were published shortly after the release of the K3
itself and have proved invaluable. They have saved me literally hundreds
of dollars in return shipping costs
> it is hard to understand why the same hasn't happened for the simpler
> KX2 system.
If I recall it right, the schematics of the KX3 wasn't released
immediately after the radio, it took more than a year.
Holger
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Elecraft mailing
Mike,
I completely agree with your position. I suspect that Elecraft having
not yet published a schematic is simply a matter of time. Schematics for
most, if not all, of their products have been published, and the later
ones (K3 and later) are on their website as pdf files.
DX Engineering
The block diagram you linked to is for hardware only; it is not a software
functional block diagram.
If you are interested specifically in the noise reduction, the source code for
the K2's NR is open source. I imagine Lyle would have adopted a similar sort of
approach for KX3/K3.
73, Matt VK2RQ
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