Re: [Elecraft] Powering KX3 from Bioenno charger with battery in between

[Jim Brown]

On 10/19/2021 1:16 PM, Julia Tuttle wrote:

Am I missing anything here?


Yes. Most chargers are noisy, because they contain switch-mode power 
supplies and regulators. One charger I got from them was noisy. When I 
talked to them about it, they sent me a linear charger with simple 
hysteresis controller, and it was quiet.


The first thing to do with ANYTHING that plugs into the wall is to check 
it for RF noise, using a portable RX like one of those described here. 
My favorite is my vintage Kenwood TH-F6A talkie, which has widerange 
coverage. Below 10 MHz, it defaults to a loopstick in the base, and with 
a software switch to use the SMA connector. I probe with the loopstick 
around 2 MHz. One of the Tecsun radios works well too. Check the unit 
itself, and any wires connected to it, including the AC line, DC power, 
and any signal cables.


http://k9yc.com/KillingReceiveNoise.pdf
http://k9yc.com/KillingRXNoiseVisalia.pdf

73, Jim K9YC
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Re: [Elecraft] Powering KX3 from Bioenno charger with battery in between

[Julia Tuttle]

Oh, pardon, it is LiFePo4:
https://www.bioennopower.com/collections/lifepo4-batteries-for-communication-equipment-ham-radio/products/12v-20ah-lfp-battery-pvc-blf-1220a

On Tue, Oct 19, 2021, 20:08  wrote:

> You don't give the chemistry of your battery, and that is important. If it
> is LiFePo4 you don't want to leave it connected to the charger all the
> time.
>
> Here is some good info:
>
> https://www.solacity.com/how-to-keep-lifepo4-lithium-ion-batteries-happy/
>
> 73, dave
> ab9ca
>
>
>
>
>
> Sent from my iPhone
>
> On Oct 19, 2021, at 16:16, Julia Tuttle  wrote:
>
> Hi,
>
> I've got a Bioenno battery (it's so good!) and the stock 14.64 V (no-load,
> by my cheap meter) 4 A (claimed) charger. I'm currently planning to just
> leave things plugged in (mains to the charger to the battery to the radio),
> and I want to make sure that's safe (won't start a fire and won't damage
> the charger, battery, or radio).
>
> Here's why I think it is:
>
> Will I overload the charger? No, the KX3 draws well under 4 A. If the
> battery is charging simultaneously, the constant-current circuitry will
> adjust the voltage down until the two loads together are drawing less than
> 4 A, at the cost of lower charging speed, lower output power, and/or higher
> PA heat dissipation.
>
> Will I overcharge the battery? 14.64 V works out to 3.66 V per cell, which
> looks like it's about 93% state of charge, which is fine for the battery
> long-term.
>
> Will I overvolt the radio? No, 14.64 V is under 15 V.
>
> Am I missing anything here? Is this a safe way to leave things long-term?
>
> Thanks,
>
> Julie
> __
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Re: [Elecraft] Parts availability

[Lou Mecseri]

Vladimir Lenin allegedly said: "The Capitalist will sell you the rope 
that we can use to hang him."


Lenin was right even if he actually didn't say it.

My last words on the subject.

73, Lou KE1F

On 10/19/2021 21:12, James Driskell wrote:

Reactionary, my left foot!  What happens the next time something like this 
happens (and it will but who knows when).  My suggestion centered around 
determining what is necessary to ensure that we continue to enjoy a semblance 
of normalcy when something happens.  For instance, if the US were to have a 
falling out with China trade wise where would we get the necessary electronics 
and other high-tech items essential for our economy to function.  Can we 
produce these essential items in CONUS?

We had the luxury of a reasonably vibrant manufacturing base prior to our entry 
in WWII but it still took time (at the cost of lives) to get production cranked 
up to meet the demand.

"Those who do not study history are doomed to repeat it!"

James M Driskell
W7OWI


From: elecraft-boun...@mailman.qth.net  on behalf 
of David Gilbert 
Sent: Monday, October 18, 2021 17:57
To: elecraft@mailman.qth.net 
Subject: Re: [Elecraft] Parts availability


Just In Time and its corollary concepts brought amazing efficiencies to
global manufacturing for decades and enabled cost reductions that we now
take for granted.  I know that first hand ... I was the operations
manager for a large division of a major semiconductor company for many
years.  I think it is exceedingly lame to denigrate the entire concept
because a once-in-a century global pandemic brought the world supply
chain to its knees.  It's not only JIT adherents that are running out of
parts, and I'd bet that the contractual relationships that major JIT
manufacturers have with their suppliers means that they are going to get
their parts before the ones who don't.  Who do you think is going to get
components first ... Elecraft or Hewlett-Packard?

It's crazy how some people try to use an aberration to justify a
reactionary bias.

Dave   AB7E



On 10/18/2021 4:24 PM, James Driskell wrote:

Unfortunately, the "Just In Time" concept that many US manufacturers have built their 
businesses around never considered the "you're never going to get it" approach that we 
now see.  I hope someone is taking a hard look at our national resource network because if the 
balloon goes up, we're going to have a hard time cranking up the domestic supply chain to meet our 
basic needs.  We probably won't have the luxury of being able to take our time to get it running.

Jim W7OWI


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Re: [Elecraft] KPA 500 for Sale

[Julia Tuttle]

Do you have a price in mind?

On Tue, Oct 19, 2021, 16:47 John Pierce via Elecraft <
elecraft@mailman.qth.net> wrote:

> Excellent Condition, light usage.
>
>
>
> AD2F
>
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Re: [Elecraft] K3 NB Info

[Keith Onishi]

Noise Blanking section in the K3 Owners Manual says;

Rotating VFO A clockwise will turn on the DSP NB, showing DSP t1-1 through DSP 
t3-7. The first number shows the relative pulse integration time, and the 
second shows the blanking level. The
higher the numbers, the more aggressive the DSP blanking action.
Rotating VFO B clockwise will turn on the IF NB, showing IF NARn, IF MEDn, or 
IF WIDn, where n is 1-7. NAR/MED/WID refers to narrow/ medium/wide blanking 
pulse widths, and n is the blanking level. Higher n means more aggressive 
blanking action. Use NAR width when possible to minimize strong-signal 
interaction effects.

73 de JH3SIF, Keith

> 2021/10/20 5:44、Ed Cole のメール:
> 
> I'm trying to use the DSP NB on local noise to improve my 6m reception of 
> very weak signals (i.e. eme signals).
> 
> There are three ranges of DSP NB T-1, T-2, and T-3 with level settings of 1 
> to 7.  The levels are self explanatory, but have found no description about 
> the three ranges (application, function, etc)
> 
> I've inquired of fellow K3 owners that do eme and they say it improves SNR 
> with no deterioration of digital signals (specifically JT65 or Q65).  FT8 is 
> probably a good test and more widely used.
> 
> Opinions and recommendations.
> 
> My 6m local noise peaks to S7 in the NE and drops to S2 when antenna is 
> rotated to SE thru West.  Elevating 13-degrees also helps, dropping S7 to S4.
> 
> Tnx & 73, Ed - KL7UW
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Re: [Elecraft] Parts availability

[James Driskell]

Reactionary, my left foot!  What happens the next time something like this 
happens (and it will but who knows when).  My suggestion centered around 
determining what is necessary to ensure that we continue to enjoy a semblance 
of normalcy when something happens.  For instance, if the US were to have a 
falling out with China trade wise where would we get the necessary electronics 
and other high-tech items essential for our economy to function.  Can we 
produce these essential items in CONUS?

We had the luxury of a reasonably vibrant manufacturing base prior to our entry 
in WWII but it still took time (at the cost of lives) to get production cranked 
up to meet the demand.

"Those who do not study history are doomed to repeat it!"

James M Driskell
W7OWI


From: elecraft-boun...@mailman.qth.net  on 
behalf of David Gilbert 
Sent: Monday, October 18, 2021 17:57
To: elecraft@mailman.qth.net 
Subject: Re: [Elecraft] Parts availability


Just In Time and its corollary concepts brought amazing efficiencies to
global manufacturing for decades and enabled cost reductions that we now
take for granted.  I know that first hand ... I was the operations
manager for a large division of a major semiconductor company for many
years.  I think it is exceedingly lame to denigrate the entire concept
because a once-in-a century global pandemic brought the world supply
chain to its knees.  It's not only JIT adherents that are running out of
parts, and I'd bet that the contractual relationships that major JIT
manufacturers have with their suppliers means that they are going to get
their parts before the ones who don't.  Who do you think is going to get
components first ... Elecraft or Hewlett-Packard?

It's crazy how some people try to use an aberration to justify a
reactionary bias.

Dave   AB7E



On 10/18/2021 4:24 PM, James Driskell wrote:
> Unfortunately, the "Just In Time" concept that many US manufacturers have 
> built their businesses around never considered the "you're never going to get 
> it" approach that we now see.  I hope someone is taking a hard look at our 
> national resource network because if the balloon goes up, we're going to have 
> a hard time cranking up the domestic supply chain to meet our basic needs.  
> We probably won't have the luxury of being able to take our time to get it 
> running.
>
> Jim W7OWI
>

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[Elecraft] Elecraft K3 and P3's for sale

[lashap]

Hello Gang,

I have a few K3 radios,and P3's for sale,along with many K3 options.

Please email me with your needs.

Thank you,

Larry k6ro

 

 

www.LSRarecoins.com  

310-710-2869

 

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[Elecraft] KPA 500 for Sale

[John Pierce via Elecraft]

Excellent Condition, light usage.

 

AD2F

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[Elecraft] K3 NB Info

[Ed Cole]

I'm trying to use the DSP NB on local noise to improve my 6m reception 
of very weak signals (i.e. eme signals).


There are three ranges of DSP NB T-1, T-2, and T-3 with level settings 
of 1 to 7.  The levels are self explanatory, but have found no 
description about the three ranges (application, function, etc)


I've inquired of fellow K3 owners that do eme and they say it improves 
SNR with no deterioration of digital signals (specifically JT65 or Q65). 
 FT8 is probably a good test and more widely used.


Opinions and recommendations.

My 6m local noise peaks to S7 in the NE and drops to S2 when antenna is 
rotated to SE thru West.  Elevating 13-degrees also helps, dropping S7 
to S4.


Tnx & 73, Ed - KL7UW
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[Elecraft] Parts availability

[Bob McGraw]

They are available on Amazon, 20 pcs for $10.95.  Others are available 
in lesser quantities.    Today, I'm finding AMAZON is a good place to 
look for and purchase electronic parts.


73

Bob, K4TAX

On 10/19/2021 3:16 PM, elecraft-requ...@mailman.qth.net wrote:

Message: 3
Date: Mon, 18 Oct 2021 21:53:48 +
From: Lou Mecseri
To:elecraft@mailman.qth.net
Subject: Re: [Elecraft] Parts availability
Message-ID:
Content-Type: text/plain; charset=UTF-8; format=flowed

My friend's refrigerator fan died. No replacement or substitute (one
they tried was 80dB loud) available. Replacement cost, and he is lucky,
$2,000 fir a new one.

Super efficiency is a dangerous thing for society and for business. At
the same time, maintaining complete part replacement is damaging to
profit. You figure, what is the right balance?

73 Lou KE1F


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[Elecraft] Powering KX3 from Bioenno charger with battery in between

[Julia Tuttle]

Hi,

I've got a Bioenno battery (it's so good!) and the stock 14.64 V (no-load,
by my cheap meter) 4 A (claimed) charger. I'm currently planning to just
leave things plugged in (mains to the charger to the battery to the radio),
and I want to make sure that's safe (won't start a fire and won't damage
the charger, battery, or radio).

Here's why I think it is:

Will I overload the charger? No, the KX3 draws well under 4 A. If the
battery is charging simultaneously, the constant-current circuitry will
adjust the voltage down until the two loads together are drawing less than
4 A, at the cost of lower charging speed, lower output power, and/or higher
PA heat dissipation.

Will I overcharge the battery? 14.64 V works out to 3.66 V per cell, which
looks like it's about 93% state of charge, which is fine for the battery
long-term.

Will I overvolt the radio? No, 14.64 V is under 15 V.

Am I missing anything here? Is this a safe way to leave things long-term?

Thanks,

Julie
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[Elecraft] KX3 buzz if power up on transverter band

[Drew Arnett]

Still buzzing during this year's ARRL 10 GHz and Up contest.  :-(

https://github.com/drewarnett/kx3-firmware-issues/issues/1

Best regards,

Drew
n7da
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Re: [Elecraft] Looking for K3 KIO3B (RS-232 i/f board)

[Hank via Elecraft]

I wonder if they could repair it for you?

Hank
K4HYJ 

> On Oct 19, 2021, at 10:39 AM, Frank Stein via Elecraft 
>  wrote:
> 
> I'm looking for the KIO3B (RS-232) board.  Mine appears to be bad.
> Elecraft no longer has the board or the upgrade (USB) board.
> 
> Thanks,
> Frank
> W4TG
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[Elecraft] New K4 beta software available (Release 25)

[Wayne Burdick]

Release 25 is now available as beta on our software downloads page. Upgrading 
is strongly recommended in order to remain current.

Release notes for R25 are listed below. These as well as earlier release notes 
can also be found on our website, as well as directly at the radio itself in 
the UPDATE utility.

NOTE: If you experience any issues after a software update, please exit the 
utility, then do the update a second time. The software update application 
itself is subject to change, and a second attempt will complete any pending 
steps.
 
73,
Wayne
N6KR



 RELEASE 25 


14 OCTOBER 2021


= FUNCTIONAL CHANGES =

NORMALIZED RECEIVER PASSBAND INDICATION: When the filter passband is normalized 
for the main or sub receiver, its passband graphic acquires two small "wings". 
(Same as the K3, etc.) To normalize the passband, hold the FILTER knob (NORM 
function).

DIGOUT1 MENU ENTRY: DIGOUT1 is an open-drain output that can be used to control 
external equipment. It is stored per-band. On the 160-6 meter bands it is also 
stored separately per-antenna if a KAT4 ATU is installed. The default is OFF 
(floating), while ON = pull the line to ground (0 V). Max load current in the 
ON state is 15 mA; max. load voltage in the OFF state is 25 V DC. The menu 
entry shows/changes the DIGOUT1 setting on the present band (and antenna if 
160-6 m).

SELECTABLE DATE FORMAT: The desired date format (EU or US) can now be selected 
using the DATE/TIME set controls. To access this, first tap in the 
date/time/status area (above the "?" Button on the LCD), then hold the 
DATA/TIME "Set" button. MM/DD/YY or DD/MM/YY format can be selected independent 
of the other controls in this window.

LINE OUT RIGHT-CHANNEL AUDIO (SUB RX) EQUALS LEFT CHANNEL (MAIN) WHEN SUB IS 
OFF.
 
3 dB RECEIVER GAIN ADDED TO BOTH RECEIVERS WHEN SPLITTER IS IN: When the sub RX 
is on and sharing the same antenna as the main RX, we now add 3 dB of IF (DSP) 
gain to compensate for the loss of the 3 dB splitter. 

TX INHIBIT CHANGES: The TX Inhibit icon now continuously reflects the state of 
the TX INH signal (ACC jack, pin 7) rather than only during transmit. Also, 
when MENU:TX Inhibit is set to OFF, pin 7 correctly outputs a logic high (5 V) 
at all times.

RX ANT OUT ON BASIC K4: The RX ANT OUT jack can now be used on a basic K4 (one 
without the KRX4 2nd RX module) in both the SUB RX ON and OFF conditions. 
Previously, the sub RX icons and controls were not reflecting the fact that, on 
a basic K4, the main and sub receivers always share the same antenna. This in 
turn was preventing the sub RX from being configured properly for RX ANT OUT 
usage.


= BUG FIXES =

SUB RX GAIN NOW SAME AS MAIN RX: Previously, the same signal injected into both 
receivers would produce a signal level 3 to 6 dB higher in the sub RX (as 
indicated by both the S-meter and panadapter). This was due to an incorrect ADC 
gain setting in the sub.

EXTERNAL MONITOR STUCK ON ELECRAFT LOGO:  The external monitor should no longer 
freeze on a logo screen after a display mode change.

LOSS OF QSK SETTING ON MESSAGE PLAY CANCEL: Fixed.

A/B REVERSE CONTROL NOW ONLY SWAPS VFO FREQUENCIES: Previously, A/B reverse 
("REV" switch) swapped all settings of VFOs A and B. Swapping only the 
frequencies makes this operation much faster.

ESSB MODE AND SSB/SSB BANDWIDTHS SAVED: These settings are now correctly 
saved/restored across power-downs.

REAR-PANEL MIC BIAS SHUTOFF FIXED: Rear panel mic bias is no longer being 
turned off when rear panel headphones are plugged in/unplugged. 

CW AUTO-TUNE WORKS IN CW-REVERSE MODE.

HIGH-SIGNAL PANADAPTER ARTIFACTS ELIMINATED: Under some high-signal conditions, 
a comb pattern or "Christmas tree" effect may have been overlaid on spectral 
peaks. This was due to signal leakage in the FFT/decimation algorithm. The 
effect has now been completely eliminated.

OVERALL DATA FLOW STABILITY IMPROVED: Previously, in very rare cases, the 
panadapter may have stopped updating due to an issue with memory allocation.

MULTIPLE IP ADDRESS PROBLEM: Corrected a situation where the radio could claim 
to have two separate IP addresses.


= FOR SOFTWARE DEVELOPERS =

REMOTE CONTROL COMMAND IMPROVEMENTS:  

DO; command added
WM; command added. See also ME0027; (Wattmeter Cal in MENU)
RG; response bug fix
CP; response bug fix
GT$; response bug fix

REF; no longer case sensitive
TEF; no longer case sensitive

IS$9xxx; now supported as FP$~; alias

SD; command improvements
   *Added SD1; SD0; setter for setting QSK
   *Added SD; getter for current mode
   *Added SDm; getter for provided mode

VG; command improvements
   *Added VG; getter for current mode
   *Added VGm; getter for provided mode

VX; command improvements
   *Added VX1; VX0; setter VOX for current mode
   *Added VX; getter for current mode
   *Added VXm; getter 

[Elecraft] Looking for K3 KIO3B (RS-232 i/f board)

[Frank Stein via Elecraft]

I'm looking for the KIO3B (RS-232) board.  Mine appears to be bad.
Elecraft no longer has the board or the upgrade (USB) board.

Thanks,
Frank
W4TG
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Re: [Elecraft] Parts availability

[Gil Drynan]

Another contribution to the problem is west coast shipping terminals and
truck drivers to receive to receive and unload containers. Twenty+ ships
waiting for their turn to unload. Sometimes weeks. I'm in the Seattle area
and we get updates on the news lately.


Gil

W7GIL


> Amen Jim.
>
> Phil AB7WE
>
>> On Oct 18, 2021, at 4:26 PM, James Driskell  wrote:
>>
>> Unfortunately, the "Just In Time" concept that many US manufacturers
>> have built their businesses around never considered the "you're never
>> going to get it" approach that we now see.  I hope someone is taking a
>> hard look at our national resource network because if the balloon goes
>> up, we're going to have a hard time cranking up the domestic supply
>> chain to meet our basic needs.  We probably won't have the luxury of
>> being able to take our time to get it running.
>>
>> Jim W7OWI
>>
>> 
>> From: elecraft-boun...@mailman.qth.net
>>  on behalf of Alan Bloom
>> 
>> Sent: Monday, October 18, 2021 14:36
>> To: Elecraft Reflector ; elecraft...@groups.io
>> 
>> Subject: [Elecraft] Parts availability
>>
>> Recently I tried to order some electronic parts for a project I am
>> working on.  In the old days (like, a year ago) I would just get on the
>> Digi-Key web site, order what I want, and it would arrive in the mail
>> in
>> a few days.
>>
>> These days, there are a LOT of parts on the Digi-Key web site that show
>> no availability.  I wanted to buy 10 standard, run-of-the-mill LM358
>> op-amps in an 8-pin DIP package.  This is a 25 cent part that has been
>> around for decades.  They had none in stock in that quantity, from any
>> manufacturer.  I ended up ordering a couple in the old-fashioned TO-5
>> metal can package for *10 bucks each*. At least they did have some of
>> those in stock.
>>
>> I also wanted to buy a ceramic capacitor assortment.  They listed 6
>> assortments that would have worked for me, but all were out of stock.
>>
>> Manufacturers with "just in time" parts ordering systems are in a world
>> of hurt these days.  Fortunately I don't think Elecraft ever went down
>> that path.
>>
>> Alan N1AL
>> __
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Re: [Elecraft] Pricing

[Julia Tuttle]

Hi Dave,

Sorry to hear about the lightning strike, and I hope your repairs are swift
and economical.

The KPA500-F is $2,499.95.
The KAT500-F is $799.95.
The PWRCOMBO-F of both is $3,224.90 ($75 combo savings).

Cheers,

Julie

On Tue, Oct 19, 2021, 07:56 Dave Sublette  wrote:

> Forgive this redundant question, but I have no internet and my phone is
> almost out of data.  I need the new price of factory built KPA500. and
> KAT500.
>
> I need it to buy shipping insurance.   I had a lightning strike last week
> and so they have been issued an RSA for repair.
>
> FYI the same lightning strike got the internet also.  Just lucky, I guess.
>
> If you wish, send privately to mycall at ARRL dot net
>
> Thanks,
>
> Dave, K4TO
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> Message delivered to ju...@juliatuttle.net
>
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Re: [Elecraft] Pricing

[Lyn Norstad]

Dave -

The assembled KPA/KAT500 "Power Combo" is currently listed at $3,224.90 (+
shipping, of course).

73
Lyn, W0LEN



-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dave Sublette
Sent: Monday, October 18, 2021 1:45 PM
To: Elecraft Discussion List
Subject: [Elecraft] Pricing

Forgive this redundant question, but I have no internet and my phone is
almost out of data.  I need the new price of factory built KPA500. and
KAT500.

I need it to buy shipping insurance.   I had a lightning strike last week
and so they have been issued an RSA for repair.

FYI the same lightning strike got the internet also.  Just lucky, I guess.

If you wish, send privately to mycall at ARRL dot net

Thanks,

Dave, K4TO
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[Elecraft] Pricing

[Dave Sublette]

Forgive this redundant question, but I have no internet and my phone is
almost out of data.  I need the new price of factory built KPA500. and
KAT500.

I need it to buy shipping insurance.   I had a lightning strike last week
and so they have been issued an RSA for repair.

FYI the same lightning strike got the internet also.  Just lucky, I guess.

If you wish, send privately to mycall at ARRL dot net

Thanks,

Dave, K4TO
__
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