[Elecraft] AX1 works great

[Kitchens, John, NS6X (SM, SB) via Elecraft]

What brought up this discussion was a comment about needing to make the AX1 
resonant. It is a 4' antenna, and by itself, won't be resonant on 15-40. It was 
not intended to be a resonant antenna. The internal "tuners" - impedance 
matching devices - of the KX2, KX3 and KH1 allow max energy to be input into 
the antenna - 5-12 watts. Using the system as factory delivered, I have had 
great success with the AX1 and the KH1 whip. The internal "tuner" matches the 
antenna, allows full radio power out and receive energy in. I connect the 
antenna directly to the radios, push the tune button, get the 1.1:1 match 
almost always and make contacts. The QSOs are sufficient to activate parks, 
which has been my goal. I am able to accomplish my goal without putting the AX1 
or whip on a tripod, using multiple radials/counterpoises, or using coax. I can 
setup the radio in less than 5 minutes, spot myself and usually complete the 
activation in less than 30 minutes (usually, if the sun is cooperatin
 g), and teardown in about 2 minutes. I use an external battery.
Of course the AX1 is not going to be resonant as presented from the factory, 
when measured with an analyzer. It is a 4' collapsible whip, with one 13' or 
31' counterpoise. Use the internal tuner, attach the antenna to the radio, and 
have fun. It is about having fun. One of the local hams has fun using random 
metal objects as antennas. He tuned his antenna, a toaster oven, sliding the 
tray in and out. He loaded a floor lamp, a screen door, a metal fence - and 
made QSOs with all of them. Someone mentioned Kurt N. Sterba (and Lil Paddle). 
They debunked many basic philosophies held for years by hams - tribal 
knowledge. Ham radio is about having fun. Just have fun. The KX-2/3, KH-1and 
the AX1/2 help to make ham radio fun.


72/73

John Kitchens, NS6X
805.216.2569
n...@arrl.org
PO Box 178
Somis, CA  93066
ARRL Santa Barbara Section Manager




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[Elecraft] Heil Pro 30 for sale

[John Pierce via Elecraft]

I have a Heil Pro 30 microphone for sale.  I am asking $165 shipped in the
continental US.  It was used very little in a smoke free environment.  I am
selling because I cannot get enough signal for the input of a KX3 without a
preamp.  My space does not allow a preamp.  If you would like I can send you
picture.  It is like new condition.

 

John

AD2F

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[Elecraft] AX1 works great

[Kitchens, John, NS6X (SM, SB) via Elecraft]

Performance for me has nothing to do with SWR, but am I making QSOs. I do. With 
the AX1 attached directly to the radio, KX2 and KX3, using the internal 
matching unit ("tuner", which has little to do with tuning the antenna), I have 
made 68 activations, 10-40 meters cw. From California, I have worked into China 
and asiatic Russia on 17 meters.
The silly thing works, and works well. Propagation must be in your favor. It 
has not worked every day. I have had to resort to digital modes occasionally to 
complete an activation (add another 32 activations). It was my main radio 
system, along with a KH1 on my two recent trips, one a three month cross 
country pota trip.
The SWr was 1:1, usually, with the internal tuner. I always used the AX1 
attached directly to the radio with a 3D printed antenna support.

I have used other radios and antennas, usually when stopped for more than a few 
hours, but the AX1 and kx2 have allowed for me to make a quick stop, usually 
less than one-hour total, to activate parks. Again, direct connection to the 
radio, 40-15, modified AX2 for 10, internal tuner, one radial as supplied by 
elecraft.
Don't overthink it. SWR does not equate to resonance. Remember tube radios-we 
had the SWr/tuner/matching device built into the radio, usually as a pi network.

John
NS6X

Get Outlook for iOS<https://aka.ms/o0ukef>
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Re: [Elecraft] ARRL end fed wire antenna

[John Zaruba Jr via Elecraft]

Hi Robert,

I’m using one with my K2 and I’m very happy with the performance. I’ve got it 
in a horizontal configuration up 35 feet.  I added a 110 uH coil and about 2 
meters of wire and it will load up on 80m as well.

73,

John K2ZA

> On Sep 26, 2024, at 21:47, Robert Strickland via Elecraft 
>  wrote:
> 
> Does anybody have any operating experience with the ARRL end fed wire 
> antenna that they have been promoting recently?
> Thanks
> 
> ...robertKE2WY
> 
> Robert G. Strickland, PhD ABPH KE2WY
> rc...@verizon.net
> Syracuse, New York FN13xa
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[Elecraft] Electaft K4D

[John Harden, D.M.D.]

Good morning,

For some reason my K4D will not key on CW. It started doing this after I 
unplugged my stereo speakers?

Any ideas out there??

73,

John, W4NU

Sent with Mailbird 
[http://www.getmailbird.com/?utm_source=signature&utm_medium=email&utm_campaign=SentWithMailbird_Faster]
 - it's faster
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[Elecraft] KX2 mobile operation in Iceland

[John Harper]

Thanks to those who called - the radio performed well, allowing me to work
3 continents from various parks in Iceland. The portability-to-features
ratio of the KX2 can't be beat.

Here is a video of it in action from the cramped quarters of a tiny rental
car with a roof-mounted vertical. All activity was on 15, 17 and 20 meter
CW.

Some drone video precedes the radio portion:
https://www.youtube.com/watch?v=mXBhKqoQLeA

73,

John AE5X
https://ae5x.blogspot.com/
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Re: [Elecraft] Lightning

[John Canfield]

Some lightning musings

My K3s network interface board took a surge on the USB part of the board 
a few years ago and toasted a diode and maybe a transistor (I forgot), 
RS232 was unaffected. Elecraft replaced the board and returned the old 
one. One of my to-do list items is to replace those components. My 
primary radio is now a TS-890 but the K3s is on duty for JS8Call 7x24 
(when no storms are forecast.) Still salivating over a K4 BTW.


As far as lightning, one of my most unusual personal experiences was 
when we had a sailboat (40' ketch with the mainmast 50' off the water) 
at a typical Florida marina. Next to us was about a 35 or 40 foot 
powerboat and next to him was another sailboat. So one would expect the 
powerboat is protected by virtue of the two tall lightning 'rods' on 
either side of him.


Uh, no. We had a very close lightning strike, none of our electronics 
were damaged and the other sailboat was also unaffected. The powerboat's 
electronics were toast, all of them. He couldn't believe it nor could 
we. We suspect he took an electrical surge via the shore power cord but 
that's just a wild guess. We heard of sailboat that took a strike and 
the next morning when they started the engine they discovered the 
transmission was internally fused together .


John WB5THT EM00ig
K3s, KPA1500, etc.

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Re: [Elecraft] K4D for bargain price on eBay

[John Stengrevics]

Tie wraps work also.

John
WA1EAZ

> On Mar 14, 2024, at 10:59 AM, jerry  wrote:
> 
> On 2024-03-14 07:51, Gregory Mitchell wrote:
> 
>> think the cost per toroid/snap-on
> 
> Here's something I found out about snap-on ferrites:  Don't depend on the 
> plastic shell.  I had installed snap-ons
> on the power leads of my homebrew LDMOS linear.  When I transmitted, I could 
> hear my voice coming out of the box.
> It was the ferrites buzzing.  I popped them apart, reinstalled with a drop of 
> cyanoacrylate glue on each surface, and
> all was well.
> 
> - Jerry, KF6VB
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Re: [Elecraft] K4D for bargain price on eBay

[John Oppenheimer]

So that there's no confusion, will you post one of the PDF file links
here. John KN5L

On 3/12/24 4:24 PM, Jim Brown wrote:
> On 3/12/2024 12:29 PM, John Oppenheimer wrote:
>> Did you measure a Choke Balun, or sometimes known as Common Code Choke
> 
> "The book" are in several pdf applications notes on my website. What I 
> measured is well documented there
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Re: [Elecraft] K4D for bargain price on eBay

[John Oppenheimer]

On 3/12/24 1:31 PM, Jim Brown wrote:
> I wrote the book on this. k9yc.com/RFI-Ham.pdf

Hi Jim, there are a bunch of inductor measurements within the book.

Did you measure a Choke Balun, or sometimes known as Common Code Choke
(CMC)?

John KN5L
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[Elecraft] WTB K60XV

[John Zaruba Jr]

Looking for a K60XV kit for my K2/100.

I know it’s a hard to find item, but you never find out if you don’t ask…

73,

John K2ZA
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[Elecraft] KAT-100 unbuilt kit For Sale, for K2, K2/100

[Kitchens, John, NS6X (SM, SB) via Elecraft]

For Sale:
KAT-100, 150W external tuner for K2, K2/100 kit.
Still in original bags, box. Kit not assembled
Asking $350, US shipping included.
respond to ns6x.j...@gmail.com

72/73
John Kitchens, NS6X




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[Elecraft] KPA-100 for K2 not built for sale

[Kitchens, John, NS6X (SM, SB) via Elecraft]

For Sale:
The KPA-100, 100 watt K2 option still in kit form. Has not been built. Parts 
still in plastic bags. Original box.
Last price from Elecraft was $699. I am asking $700 to include US shipping.
Respond to ns6x.j...@gmail.com

72/73
John Kitchens, NS6X




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[Elecraft] KX3 - No sound from internal speaker

[John Overbaugh]

I set up yesterday for field day, which I operate using a headset. At some
point in setting up I realized my internal speaker is not working. No sound
at all. Is there a hidden setting somewhere to disable it, or is it likely
I've blown the speaker?

Headphones work fine.
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Re: [Elecraft] User's Dilemma

[John Canfield]

Early in my career at SW Bell (then management with AT&T Info Systems) I 
was a Teletype tech. We worked on Model 28, 33, 35, 40, 3274 bisync 
terminals, printers, tape punch, readers and tape printers. Classes on 
each model were five days a week, eight hours a day for three weeks. It 
took me at least a year to become proficient on most models. After two 
years I could pull a mainshaft on a Model 28/35 to replace clutch parts 
and have it back in service in 20 minutes. At that point as a TTY tech I 
was called on and traveled to assist others in a difficult repairs.


My standard to become up to speed (maybe 90%) is about six months for 
the many jobs I had at AT&T.


Sidebar: The model 33s were the 'economy' models. Adjustments were made 
by bending various parts, arms, levers, etc. From a technician point of 
view they were junk.


John WB5THT

On 12/16/2023 7:51 PM, elecraft-requ...@mailman.qth.net wrote:

Re: [Elecraft] User's Dilemma
Message-ID:
Content-Type: text/plain; charset=UTF-8; format=flowed

Send it to Watsonville for the best service. Let me give you a story of
my personal experience.

When I started with K2 repairs, I had Gary Surrency to bounce any
difficult situations off of.? Gary was kind enough to lead me 'by the
hand' through the initial process.? I was on the east coast area working
remotely with both Gary (Arizona) and Watsonville. After about 6 months,
Gary asked me why I only asked about difficult questions, and I told him
that the easy ones I had already solved.

Go on to my 'retirement' from repairs.? Dave Van Wallaghen W8FGU took
over.? Dave already had experience with the legacy gear that I was
working on. Still, it took about 6 months before Dave was fully
on-board, and after almost 2 years, he still asks about some of the
'really strange stuff' that he encounters, and I may or may not be able
to offer any additional information..

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Re: [Elecraft] K4 Remote Lives and Breathes!

[John Canfield]

I was behind a *double* NAT until I got a static IP but in the meantime 
I setup a reverse SSH tunnel It's been several years since that but it's 
a real pain to setup and keep connected. Finding a host provider that 
would permit a reverse tunnel is a challenge, few will do this.


John WB5THT

On 12/15/2023 11:57 AM, elecraft-requ...@mailman.qth.net wrote:

Message: 14
Date: Fri, 15 Dec 2023 15:57:57 +0100
From: Magnus Danielson
To:elecraft@mailman.qth.net
Subject: Re: [Elecraft] K4 Remote Lives and Breathes!
Message-ID:
Content-Type: text/plain; charset=UTF-8; format=flowed

This issue is real. A problem is also there is quite many port forward
configurations to setup as one setup a station.

There is methods to punch through NATs, and I hope one have chosen to
use an approach that does this. One is to operate over a VPN that have
these abilities. Another is to use a standard tunnel usinging say TLS
that also include the punch-through capabilities.

Also, IPv6 is starting to replace the IPv4 NAT/CG-NAT hell. It's been a
long coming for sure, but there is plenty of signs it is happening.
While initial release may be IPv4 limited, IPv6 should be high up on the
list of thigns to fix if it is not already handled. This should not be
relevant only for the K4, but any device.

When wearing another set of hats, I work on these issues.

73 Magnus SA0MAD

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Re: [Elecraft] Holiday Wishes

[John Paul Keon]

HAPPY THANKSGIVING Jim and all the staff.

John Paul /// AB4PP

On Thu, Nov 23, 2023 at 10:39 AM Jim Sheldon  wrote:

> To All Elecrafters everywhere,
> Since this is the beginning of the holiday season for those of many
> different religious beliefs, I'd like to wish everyone, regardless of
> their faith or religion, a very Happy Holiday Season from me and my
> family.
>
> Jim, W0EB
> Park City, Kansas
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Re: [Elecraft] HI CUR warning on K3

[john]

I am not very familiar with a Carolina Windom but I believe it is just a
horizonal wire fed off center.  These types of antennas can have significant
common mode current on the feedline. Perhaps there is more current on 40m
than on 80m so it works on 80m.  

A resonant dipole with a choke may solve this HI CUR issue. 

John KK9a




Pete Smith N4ZR wrote:

I send a few characters of CW into my Carolina Windom on 40M and after a 
delay (1-5 seconds after I stop sending) the K3 flashes a HI CUR 
warning, and the audio gain is reduced significantly.  Touch the AF gain 
control and it instantly returns the gain to normal, but frequently the 
HI CURR warning returns over and over, without any additional 
transmissions.  This sequence does not happen, even with 1500 watts, 
into my dummy load, nor does it happen on the same antenna on 80M, or on 
20 meters on my tribander.

I've read the HI CUR warning discussion on page 65 of the manual, but it 
doesn't seem relevant, because I don't have external speakers.  The fact 
that it  only happens when feeding an actual antenna on one band 
suggests RFI, but the fact that the HI CUR warning and gain reduction 
recur again and again long after any RF has me puzzled.  Any suggestions 
gratefully accepted!

-- 
73, Pete N4ZR

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[Elecraft] KX3 - CWT, no ALC in Data Mode

[John Overbaugh]

Messing around with PSK today and I'm stumped... I am sure I just switched
a setting somewhere but I can't figure out where. When I am in DATA A mode
for PSK, I see the CWT meter, not the ALC meter. When I press the Keyer/Mic
knob, it *should* change, but it doesn't. When I rotate the knob, it
changes the keyer speed. I can't get the ALC meter to come up at all during
XMIT mode.

Is there a config setting somewhere that controls this or is this possibly
an indication the knob needs repair?

Thanks de K7JTO
John O.
Utah, USA
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[Elecraft] KH1 delivery date projection please

[John Harper]

Can you tell us which order number represents the transition from Batch 1
to Batch 2?

John AE5X
https://ae5x.blogspot.com

Hi Pete,

KH1s from the first production batch will start shipping next week.
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[Elecraft] K2 VFO dial calibration and CAL PLL step…

[Dr John Farmer via Elecraft]

Hi All, 

I’m re-doing the dial calibration of my K2 #6998 which I built well over 10 
years ago. I’m re-reading W3FPR’s helpful instructions but it’s been a long 
time since I did the initial calibration and I have a question.  After 
completing the C22 adjustment step,  does CAL PLL need to be performed on each 
and every band?  Or is it run only on the band on which C22 was adjusted?  I 
can’t find any clear statement about this in Don’s notes, but maybe I’ve 
overlooked it? 

My thought is that CAL PLL would need to be run on every band before moving on 
to the CAL FIL procedure in order that the lookup tables are written for each 
band? 

Thanks for the advice. 
73, 
John VK7KB

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Re: [Elecraft] TS-890 vs K4D performance?

[John Stengrevics]

I would very much like to read a comparison from someone who has had the 
opportunity to run both rigs.

73,

John
WA1EAZ

> On Oct 24, 2023, at 3:52 PM,   wrote:
> 
> I do not see where Eric said to close this thread.  He said it is perfectly
> OK comparing another manufacture's product to an Elecraft one.   I do not
> think anyone really answered WB5THT's question.
> 
> John KK9A 
> 
> 
> 
> [Elecraft] TS-890 vs K4D performance?
> Keith Trinity WE6R wrote:
> 
> Guys GUYS! ... guess where I learned this :)
> Eric asked that everyone stop posting about this and CLOSED the thread 
> Monday!
> Please read his post below.
> If you need to comment, send me a private email as several folks have done.
> 
> Keith WE6R, list manager and K3/K4 Tech (I have radios to repair... and 
> play with)
> 
> 
> 
> Folks - It is perfectly OK to have -civil- discussions here comparing our
> rigs to other rigs (within a reasonable length.) .
> 
> And it's ok to post Elecraft products for sale here.
> 
> It is NOT OK to be rude or get personal and criticize other's postings.
> 
> if you have a complaint about a posting email our list manager,
> keith at elecraft.com  <http://mailman.qth.net/mailman/listinfo/elecraft>
> 
> Please stop the complaints criticizing what others should not post
> IMMEDIATELY, or I will put the whole list on emergency moderation.
> 
> Eric   WA6HHQ
> CEO, List moderator, etc.
> *elecraft.com <http://elecraft.com>*
> 
> __
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> 
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> Message delivered to jstengrev...@comcast.net

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Re: [Elecraft] posting

[john]

Yes you can and did figure out how to post on this list.

John KK9A


Michael Kelly K3BFP
I though i was subscribed to the list. Can figure out how to post .  
thank you

-- 
Michael Kelly
K3BFP
610-637-9055

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Re: [Elecraft] TS-890 vs K4D performance?

[john]

I do not see where Eric said to close this thread.  He said it is perfectly
OK comparing another manufacture's product to an Elecraft one.   I do not
think anyone really answered WB5THT's question.

John KK9A 



[Elecraft] TS-890 vs K4D performance?
Keith Trinity WE6R wrote:

Guys GUYS! ... guess where I learned this :)
Eric asked that everyone stop posting about this and CLOSED the thread 
Monday!
Please read his post below.
If you need to comment, send me a private email as several folks have done.

Keith WE6R, list manager and K3/K4 Tech (I have radios to repair... and 
play with)



Folks - It is perfectly OK to have -civil- discussions here comparing our
rigs to other rigs (within a reasonable length.) .

And it's ok to post Elecraft products for sale here.

It is NOT OK to be rude or get personal and criticize other's postings.

if you have a complaint about a posting email our list manager,
keith at elecraft.com  <http://mailman.qth.net/mailman/listinfo/elecraft>

Please stop the complaints criticizing what others should not post
IMMEDIATELY, or I will put the whole list on emergency moderation.

Eric   WA6HHQ
CEO, List moderator, etc.
*elecraft.com <http://elecraft.com>*

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Re: [Elecraft] TS-890 vs K4D performance?

[John Canfield]

Thank you Eric. I certainly didn't want to start a conflagration on the 
list, I do appreciate you stepping in here. I used the K3 reflector 
because I have a K3s and this is the one I'm subscribed to and read.


As a slight tangent I've noticed in the past the topics have 
occasionally wandered around and I just skip the ones I'm not interested 
in, perhaps a good policy for the users here?


73 de John WB5THT


--

Message: 17
Date: Mon, 23 Oct 2023 11:20:08 -0700
From: Eric Swartz 
To: Toast 
Cc: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] TS-890 vs K4D performance?
Message-ID:

Content-Type: text/plain; charset="UTF-8"

Folks - It is perfectly OK to have -civil- discussions here comparing our
rigs to other rigs (within a reasonable length.) .

And it's ok to post Elecraft products for sale here.

It is NOT OK to be rude or get personal and criticize other's postings.

if you have a complaint about a posting email our list manager,
ke...@elecraft.com

Please stop the complaints criticizing what others should not post
IMMEDIATELY, or I will put the whole list on emergency moderation.

Eric   WA6HHQ
CEO, List moderator, etc.
*elecraft.com <http://elecraft.com>*



On Oct 23, 2023, at 2:02?PM,

?LMAO!  Yes, because anecdotal story-telling on this list by various

un/under-qualified people making comments on equipment they cannot even
BEGIN to understand MUCH LESS operate anywhere near its capabilities.

This is the Elecraft manufacturer's list.  It is here to discuss

ELECRAFT gear.  Ask Wayne or Eric.  It belongs to THEM.

IF you choose to talk about NON-Elecraft gear, be prepared to field very

pointed questions about your qualifications and testing methods.  Because
if you are acting a 'fool", it WILL be revealed that you do not know what
you don't know.

Be well!

Just saying.  there are numerous other venues to discuss your Asian

crap THIS ain't the place unless you are OK with getting sharpshot
until you capitulate.

Have a good day.
lecraft.com 


--

Message: 18
Date: Mon, 23 Oct 2023 13:27:03 -0500
From: Lou Laderman 
To: Andrew Moore 
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] TS-890 vs K4D performance?
Message-ID: <3810016e-d4cc-446a-a764-1790a6e4f...@icloud.com>
Content-Type: text/plain; charset=utf-8

This back and forth isn?t helpful folks. Sometimes opinions about another?s 
post are better held privately than to perpetuated in an endless email chain of 
ill-will.

73, Lou W0FK


Lou Laderman
Sent from my mobile device

On Oct 23, 2023, at 1:08 PM, Andrew Moore  wrote:

?Lashing out is an indication of an unrelated underlying issue. Feelings of
inadequacy or inferiority. Real or imagined.

73,
-Andrew NV1B
..



On Mon, Oct 23, 2023 at 2:02?PM Clay Autery  wrote:


LMAO!  Yes, because anecdotal story-telling on this list by various
un/under-qualified people making comments on equipment they cannot even
BEGIN to understand MUCH LESS operate anywhere near its capabilities.

This is the Elecraft manufacturer's list.  It is here to discuss
ELECRAFT gear.  Ask Wayne or Eric.  It belongs to THEM.

IF you choose to talk about NON-Elecraft gear, be prepared to field very
pointed questions about your qualifications and testing methods.
Because if you are acting a 'fool", it WILL be revealed that you do not
know what you don't know.

Be well!

Just saying.  there are numerous other venues to discuss your Asian
crap THIS ain't the place unless you are OK with getting sharpshot
until you capitulate.

Have a good day.

Clay E. Autery, Jr.
KY5G

On 10/23/2023 11:14 AM, Toast wrote:

I came to this list to have honest conversations about the comparison of

Elecraft equipment vs other manufacturers.  I prefer to live without my
head in the sand.

Rob Mantz
NR4B

Sent from my iPhone


On Oct 23, 2023, at 11:22?AM, Clay Autery  wrote:

?I don't come to this list to talk about Kenwood.  Please take your

Kenwoo0d stuff to another list.  Groups.io, etc...

Clay E. Autery, Jr.
KY5G

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--

Message: 19
Date: Mon, 23 Oct 2023 14:56:13 -0500
From: "Dr. William 

Re: [Elecraft] KH1 attenuator -- 12 dB or 10/30 dB?

[john]

Wow, we don't have to tell Julie to RTFM.

John KK9A

Julia Tuttle wrote:

Hi folks,

I noticed that the specs on the KH1 product page says "ATTENUATOR: -12 dB,
switchable", but the manual (p. 16) implies it has -10 and -30 settings.
Which is correct?

(Also, it's not listed in the specs in the manual (p. 36) at all -- maybe
something for the errata?)

73,

Julie

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[Elecraft] TS-890 vs K4D performance?

[John Canfield]

Hi all,

Long time fan of Elecraft, I have a K3s and a KPA1500, both are 
currently in service. My primary HF radio is now a TS-890, I bought it 
about four or so years ago after giving up waiting on the K4's to be off 
the shelf ready to purchase.


So on to my questions about the two rigs. For those who have fairly 
recent experience running both the TS-890/K4's I would greatly 
appreciate anyone's thoughts and comments about the two rigs. I really 
like the 890 after I finally figured out how to run it (hi hi). I like 
the visual representation of adjusting the high and low bandpass filters 
on the waterfall. One feature of the 890 I don't like is the notch 
filter isn't automatic unlike my K3s.


I know there's a lot of complaints about relatively poor DSP noise 
reduction on the 890 and I do agree it's not in the same class as my K3s 
but nonetheless it's still quite effective. Receive sensitivity on my 
890 is outstanding, I'll have to give it a subjective 5 stars and my K3s 
4 stars.


One huge bonus of Elecraft is factory service which I've had to use a 
couple of times with my K3s. I give it 5 stars :-)


Any helpful comments are greatly appreciated and please be brutally honest.

73 de John WB5THT

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Re: [Elecraft] One More Time

[john]

Apparently you did not get an answer the last time you posted on the
Elecraft list so you're trying again.

Perhaps try an Icom list like this one:
https://groups.io/g/ic-7300

John KK9A




Richard W4KBX wrote:

Because I've seen several Q&A post here about the IC-7300 I'm going to try
my question again.

Is there a simple way to enter "custom" frequencies in the Band Stacking
Registers? For examples 14,000, 14,150, and 14,300.

I've scoured both manuals to no avail.

Thanks.

Richard Kunc
W4KBX
FlatHat at comcast.net

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Re: [Elecraft] Digital mode power handling for KAT3

[john]

I agree that the KAT3(a) can run 100 watts for quite a while.  I have run
100 watts in RTTY contests with both of my K3S(s) without issue.  I have
never used FT8, I am sure that my RTTY transmissions are shorter than a 13
second FT8 transmission however the non-transmit time in-between RTTY
transmissions can be very short when CQing at times.  I have no personal
experience with the KAT3's power capability, I am sure that it depends on
what it is matching.  I have all OWA Yagis so I have no need for a tuner. 

John KK9A



David Gilbert AB7E wrote: 
I am reasonably certain that the KAT3 can handle 100 watts for a lengthy 
period to time (enough for normal FT8 purposes) if the SWR it is trying 
to match is low enough.  But the original query didn't say how high an 
SWR he was trying to match.  The KAT3 is certainly capable of matching 
some pretty high SWRs (well over 10:1), but the question is how long can 
it push 100 watts into an SWR that it could otherwise normally handle at 
lower SWR.

Another factor is the phase of the impedance the KAT3 is trying to 
match.  A high SWR could present either a capacitive load or an 
inductive load to the KAT3.  In one case it could result in high 
currents within the KAT3 ... in another it could mean high internal 
voltages.

So the real question is ... can the KAT3 survive for X amount of time 
when pushing 100 watts into a high SWR at most any phase?   I can pretty 
much guarantee that nobody knows the answer to that question.

I wouldn't be at all surprised if the KAT3 could handle 100 watts into a 
high SWR for periods of time that were comfortable for FT8 if the phase 
of the load impedance resulted in higher currents.  I'm not so confident 
about that if the phase gave high voltages. Heating takes a bit of time 
to be destructive ... voltage breakdowns and arc overs happen very quickly.

  73,
Dave   AB7E

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Re: [Elecraft] Headset Hubbub

[john]

What are hams going to do when their CM-500's break?

Are you sure that the mic was DOA?  It has an electret microphone which
requires voltage to work.

John KK9A



Richard FlatHat  W4KBX wrote:

I ordered a Yamaha CM-500 from Amazon but it came through some other company
after waiting eight days and there were problems.

1. The original factory packaging was gone.
2. It came wound in bubble wrap, then stuffed into a cardboard box that had
been cut down from a larger box and taped together.
3. There was no manual.
4. The mic was dead.

I'm betting it was a DOA return item that was then sent out to me thinking I
wouldn't notice or I'd think returning it was too much trouble.

On top of that, they've been out of manufacture for quite some time so all
that the stores have are the dregs.

So now I open again for other suggested headsets in the $100 range. The
CM500 was a gaming headset so that could be a source. This is going to be a
gift for a friend who badly needs something.

Any more ideas?

Cheers.

Richard Kunc
W4KBX

FlatHat at comcast.net

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Re: [Elecraft] Elecraft] KPA500 / KAT500 and W2 watt meter question

[john]

The original post is in the archives so I am sure that was distributed:
https://mailman.qth.net/pipermail/elecraft/2023-October/293543.html

John KK9A

Dean, K2WW wrote;

I don't see the original thread only Bob's reply?
I've noticed these broken thread quite frequently...Has anyone else see
this?

73
Dean K2WW

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Re: [Elecraft] KRX3A Subreceiver for K3s

[john]

Correct, they are no longer for sale through Elecraft.  There was a last
call to buy some options in 2021 and those are still being manufactured.

I have also been looking at used KRX3A's but the ones I saw had the old
synthesizer board, perhaps really a KRX3? 

I am also interested in a KAT3A and KRX3A for a K3S.

John KK9A
  


Bernie and Cheryl hamdan KF0QS wrote:
Dear Folks:

I suspect that Elecraft no longer sells the KRX3A subreceiver. Can 
anyone please confirm that for me, and assuming they do not, does anyone 
have one for sale?

Thanks and 73, de Bernie, KF0QS

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[Elecraft] K-Pod button problems

[john]

During the weekend's WW RTTY contest I used a K3S and a K-Pod.  The K-Pod
worked great for RIT control.  I tried to use it to occasionally switch my
RX antenna in and out but then I was quickly reminded why I do not use this
function and instead use the RX ANT button on the radio.  I have the F4
button programed so a quick press toggles the RX antenna and a long press
switches the radio to 40m.   What happens on random occasions is tapping the
F4 button will switch the radio to 160m instead of toggling the RX antenna
input.  It is really annoying to be running stations on 40m and then the
radio just jumps to another band. The QSO gets messed up and there is a risk
of losing the run frequency.  Incidentally a long press of F8 is programmed
to switch the radio to 160 and that was definitely not accidently touched.
I am unsure of the firmware version.  Is this a known problem?  Is here a
cure? 

John KK9A  (W4AAA in 2023 CW WW RTTY contest)



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[Elecraft] All that and a bag of chips

[John Nicholson]

As a new K4D owner (delivered yesterday) I’m here to report, yes Wayne, I love 
the radio. You were correct 😀 

Up ’til midnight, I got it all configured to my liking on CW and SSB. In 
addition, I connected my Wellbrook loop to RX ANT 1 in. All is working to my 
satisfaction. Great radio.

With a tip of the hat to those who waited for their K4’s, mine was ordered last 
Friday and arrived the following Tuesday.

John K7FD, K1, KX1, K2, and K4D
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Re: [Elecraft] Mouse; wireless trackball?

[John Nicholson]

Received direct email that, yes, the trackball works.

Thanks all,

John K7FD

> On Sep 24, 2023, at 10:58 AM, John Nicholson  wrote:
> 
> 
> UPS will be delivering my K4D Tuesday.
> 
> I use a USB wireless Logitech Ergo M575 trackball on my laptop. Will this 
> work on the K4D? If not, what wireless mouse is best?
> 
> Thanks,
> 
> John K7FD

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[Elecraft] Mouse; wireless trackball?

[John Nicholson]

UPS will be delivering my K4D Tuesday.

I use a USB wireless Logitech Ergo M575 trackball on my laptop. Will this work 
on the K4D? If not, what wireless mouse is best? 

Thanks,

John K7FD
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Re: [Elecraft] AT1 Attenuator

[John Oppenheimer]

2-Port VNWA measurements at 7MHz

Switch, VSWR, dB
0 1.01 0.07
1 1.03 1.06
1 1.03 1.06
3 1.02 3.08
6 1.03 6.31
10 1.02 9.78
20 1.05 19.97

VSWR approaches 1.1 at 30MHz with some switch settings.

John KN5L
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Re: [Elecraft] OT: The day I found out I was going to be an engineer

[John Gay]

I owe my interest to an unknown person, likely a ham. When I was around 11 I 
found an Allied Radio and a Lafayette Radio catalog in an abandoned 
homesteaders cabin on the family ranch that some hunters had left behind after 
using it for shelter during the Montana deer hunting season. Old catalogs often 
served as TP in such circumstances. Until then I had no idea shortwave radio 
existed and being a little remote, we had just gotten REA. In went bingo cards 
for current catalogs.
 Not much later I’d taught myself to solder and built a Knightkit Star Roamer. 
Even joined the ARRL as an associate. But no one to work with me on the code; 
the one local ham I could find refused. 
Then as a GE freshman, the EE demo was really boring (the microchip revolution 
hadn’t hit the curriculum yet) so ME it was but engineering never the less. And 
more career changes ahead.

73,
John K7JG

Sent from my iPad
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Re: [Elecraft] OT: The day I found out I was going to be an engineer

[John Magliacane via Elecraft]

 On Friday, September 15, 2023 at 08:35:40 PM EDT, Wayne Burdick 
 wrote:

> I was 8 years old. My dad had bought me a Radio Shack Science Fair 8-Note 
> Electronic Organ kit for Christmas, along with a soldering iron.

Sounds like one of their P-Box kits. When I was around the same age, my Father 
bought the 3-transistor regenerative Short-Wave Radio Kit. A listing of the 
P-Box kits can be found here: http://my.core.com/~sparktron/pbox.html

My Father was a Fireman, so there was no way he would trust me with a soldering 
iron at such a young age. Instead, he ended up building the kit himself while I 
watched with great interest.

He wound several coils so the receiver could receive several ham bands as he 
was trying to spark an interest in Amateur Radio, but I don't ever recall 
hearing any hams with the receiver, just the typical short-wave broadcasts of 
the time.

Several years later, he ended up taking the receiver away from me because the 
radiated broadband noise interfered with his Swan 500CX. :-)

It didn't matter much to me anyway as I never heard much with it. But it was 
every educational in the sense that the frequency range of the receiver was 
dictated by the size of the coil wound by the builder. Eventually he gave me 
his old Hammarlund HQ-140-X, so I hardly ever missed that old Radio Shack regen.

Interestingly enough, there's a modernized version of the receiver that employs 
silicon transistors (2N3904 and 2N3906s) instead of the original germanium 
jobs. Details can be found here: 
http://www.netzener.net/images/swradio/swradio.pdf

And that old Hammarlund lives on to this day after I "solid-stated it" not long 
after becoming a ham 40 years ago.


73 de John, KD2BD
  
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Re: [Elecraft] Recording received audio

[john]

I'm not sure what good the audio file will be to the power company but it 
should be easy to record.  Does he voice recorder have access in settings to 
the microphone and is the correct line in microphone selected?  

Many contests require a recording. I sometimes split the headphone audio with a 
Y cable and record using a small digital Sony voice recorder. You could try 
splitting your headphone audio into the computer line in/mic if you're not sure 
that your K3 line out level is set or working properly. Headphone volume is 
quite easy to adjust.

John KK9A



Jim Cary W2SM wrote:

I’ve been requested by my electric company to send a recording of the power 
line noise I am encountering at my QTH.  

I thought that would be an easy project….. connect the  K3S Line Out to the 
Mike In of my computer (Windows 10) and use the Voice Recorder to capture the 
audio.  But no matter what I try, Voice Recorder says to “set up the microphone 
in Settings.”  But when I go into settings and look at the Microphone level, I 
can see the audio is apparently being received as the level varies as I change 
the level of the data on the K3S line out.   I tried using both the K3S 
internal sound card and the computer sound card with no result.

Is there a better APP than Voice Recorder for this purpose?

What am I missing?  This should be easy!! ☹️

Jim
W2SM

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[Elecraft] A Good Headset For A K3

[john]

I've tried a lot of headsets and like the Bose Quiet Comfort, noise 
cancelling headset the best.  They are fairly light, and the ear pieces 
are slanted in the outer shell, so the don't touch my earlobes. The 
noise cancelling takes care of the KPA1500 fan noise. I did NOT like the 
Bose 700 headset. I'm currently using the QC35 Gaming headset with the 
microphone. The microphone seems adequate for the little SSB I do. Not 
sure if these are currently available - maybe check eBay.


I've tried several other brands of noise cancelling earphones (including 
Sony) and found most have serious  TX noise on 10 and 15m.  BTW, 
Bluetooth has a delay problem, so completely unusable on CW.


My CM500 earphones touched my earlobes, and did NOT provide a good seal 
around the ear. Quality was questionable. Same with the similar ones by 
Koss.


I think the Radio Sport headphones are too heavy and the spring force 
was too great. I never got them to relax. They fit so tightly, my ears 
would sweat


Would be interested to hear what you choose.
  - 73, John, N0TA
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Re: [Elecraft] K3 Headset

[John Paul Keon]

I have been using a HEIL proset with my K3S since I built it.
I have not had any problems with it.

John Paul // AB4PP

On Sun, Aug 6, 2023 at 8:11 PM Tom & Barb Valosin 
wrote:

> Eric,
>
> Ever since I got my K3 (used) about 9 years back I have been using a
> Heil Proset.
>
> Connects into front mic - jack and phones. Seems to work well. I have
> been happy with it.
>
> Tom, WB2KLD
>
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Re: [Elecraft] A Good Headset For A K3

[john]

The Sony 7506 is my preferred headset for CW and RTTY contesting.

A few months ago K5TR posted info on a mic that can be attached to any
headphone.

John KK9A



Lee Hiers AA4GA wrote:


My CM-500 has kinda fallen apart, so I've added new earpads to my old Sony
7506 'phones and have been enjoying them on CW.  I'm thinking about trying
to mount the Yamaha mic, or just get a ModMic to add to the Sony.

73 de Lee, AA4GA

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Re: [Elecraft] A Good Headset For A K3

[john]

I do not think the mailman has a search field but you can search the
elecraft list archives here:
https://www.mail-archive.com/elecraft@mailman.qth.net/maillist.html

John KK9A


Eric Fitzgerald kg6mzs wrote:

Hello Elecrafters,

I've been struggling with a failing Kenwood MC-60 desk mic for portable 
operation and I would like recommendations for a good, robust headset 
that plugs into the front panel jack.

Thanks in advance for that,

73 Eric KG6MZS

PS; I tried to search the Mailman archives for this and couldn't find 
the search field.  Did it change recently?

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Re: [Elecraft] A dumb question about lightning

[john simmons]

I especially agree with your last sentence. However I like to describe it as:
"Every device is at the same potential".

Nothing will be damaged even if everything is at 20,000 volts- as you say, no 
current will flow.


-John NI0K

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Bill Frantz
Sent: Friday, August 4, 2023 3:32 PM
To: Elecraft List 
Subject: Re: [Elecraft] A dumb question about lightning

While you are trying to make sense of the best practices lightning protection 
documents:

  N0AX’s ARRL book “Grounding and Bonding for the Radio Amateur”

  Motorola’s STANDARDS AND GUIDELINES FOR COMMUNICATION SITES
  https://www.blm.gov/sites/blm.gov/files/Lands_ROW_Motorola_R56_2005_manual.pdf

  K9YC’s Power, Grounding, Bonding, and Audio for Ham Radio.
  http://k9yc.com/GroundingAndAudio.pdf

There are a few items of AC electrical behavior to keep in mind:

Lightning is produced by a giant spark-gap transmitter. It is a VERY broad RF 
signal centered at about 1 MHz.

There’s no such thing as a wire at RF, they are all transmission lines. 
Everything has both inductance and capacitance. These inductances will affect 
the way grounding lines work.

Conductors at RF exhibit what is called the surface effect, where the current 
is limited to the surface of the conductor. This is why 50cm (2 inch) wide 
copper leads, with their large surface area, are recommended. (Note that the 
surface effect is also important for AC power distribution systems at 50 or 60 
Hz.)

Proper bonding in the station can make all the equipment “float” at the same 
voltage above the local soil. If no current flows through the equipment, it 
will not be damaged.

73 Bill AE6JV


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Re: [Elecraft] [OT] A dumb question about lightning

[john]

I would recommend that you follow proper lightning bonding/grounding
techniques, these are the only methods that work. My tower has taken a
number of lighting strikes. You cannot prevent a lightning strike. Simply
disconnecting your feedling will not prevent damage inside your house as the
voltage from a strike will be induced into your home's electrical wires.

John KK9A


Al Lorona W6LX wrote:


Please don't laugh at me; I'm a transplant from a region of the country with
essentially no lightning to a region where you have to worry about it quite
a bit.

We had a doozy of a storm last night, with lots of lightning overhead. I
felt like a sitting duck, even though I had grounded both sides of the
balanced feedline of the antenna, switched the antenna switch to the middle
(grounded) position, and even disconnected the coax leading to the K3's
rear-panel antenna port.

Whenever lightning happens, I always wonder if it really is in fact better
to ground everything. Because, doesn't that essentially make a lightning rod
of the antenna? If I simply disconnected the antenna and left it floating,
wouldn't it be less likely to attract a lightning bolt?

I'm of the belief that it's better to try to avoid a direct hit than to
attract one and trust your grounding system to do its thing. I'm of the
belief that no grounding system is perfectly effective.

Al  W6LX/4

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[Elecraft] K3: FT4 & RTTY Output Power

[john]

When I change modes from FT4 (Data A) to RTTY (AFSK A), I am only able 
to get around 0.2w output in RTTY. I have to recycle the K3 power, to 
get full power (100w) in RTTY. Any idea what is causing this, and if 
there is a fix other than a K3 power recycle? Both modes use the same 
audio settings, and are keyed via VOX. I don't see the power problem 
when going from RTTY to FT4.

  - John, N0TA
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Re: [Elecraft] [Elecraft-K4] wtb SP4

[John Stengrevics]

Hi Darrell,

You may want to shop around for an SP3.  Same speaker on the inside.

73,

John
WA1EAZ

> On Jul 20, 2023, at 9:10 PM, Darrell - AB2E  wrote:
> 
> Hi All,
> Bought a nearly new K4D a few months back without a speaker, now Elecraft has 
> them backordered.
> Anyone have a spare, or one they would be willing to sell>?
> Contact me offlist a...@comcast.net <mailto:a...@comcast.net>
> 
> Thanks and 73,
> Darrell AB2E
> _._,_._,_
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> _._,_._,_

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[Elecraft] Is KX3 going obsolete soon?

[John Harper]

As someone who's owned two KX2's and two FX-4CR's, I can tell you that the
FX-4CR will never be mistaken for an E product.

John AE5X
https://ae5x.blogspot.com

>The little FX-4C, and now the FX-4CR, are selling like hot cakes!
Still can't beat the performance of the KX2 or the KX3 though.
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Re: [Elecraft] Is KX3 going obsolete soon?

[John Paul Keon]

I have a KX3 too.  Have hardly used it in the last two years.
Covid put a stop to me going out period.
I am wondering too, if they are stopping production?  Or making a newer
radio?

John Paul // AB4PP

On Sat, Jul 15, 2023 at 9:31 AM eA  wrote:

> I noticed elecraft has discontinued selling the KXUSB cable! I have one so
> I don't need it but my more important question: Is this a sign
> Elecraft is planning
> to replace the KX3 in the near future? I'm sure they've been working on a
> replacement and as they sell off inventory will a replacement come soon?
>
> I love my KX3 but it gets very little use these days..
>
> 73/ed
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Re: [Elecraft] KX3 Package For Sale

[john]

You listed various payment methods but neglected to include the pricing in
your ad.


Steve Plotner W5SBP wrote:

Good morning.
 I have a new/old stock KX3 Transceiver, Px3 Panaadapter & KXPA 100W
Ext. Amplifier w/150W Antenna Tuner. I bought this (as well as a couple of
other radios) from my Elmer, mentor, and friend. as new, never opened.
Each Item comes with factory-included cables and adapters:
A)
1) KX3-F KX3 160-6M Transceiver, Factory Assembled S/N 1293
2) KXAT3 Internal, Wide-Range 20-W Automatic Antenna Tuner
3) KXBC3 Internal NiMH Charger with Real-Time Clock for KX3 (Purchased
separately - Not yet installed)
4) KXFL3 Dual-Passband Filter
5) KXPD3 Precision Keyer Paddle (Purchased separately - Not yet installed)
6) MH3 Hand Microphone for KX3
7) BNG-RA BNC Rt. Angle M-F
8) KX3-PCKT KX3 Accessory Cable Set
9) KXUSB USB Interface Cable
10) E850524 KX3 Pwr. Cable 18 AWG Rt. Angle

B)
1) PX3-F Panadapter for the KX# Factory Assembled S/N 0956
2) PWR12V1A-US 12V, 1A 100-240, Power Supply (US Version Only)
3) KXUSB USB Interface Cable
4) PX3CBL PX3 Cable Kit5) E850524 KX3 Pwr. Cable 18 AWG Rt. Angle
5) E8505524

C)
1) KXPA100-AT-F 100W EXT Amplifier with 150 Antenna Tuner - Factory
Assembled S/N 0128
2) KXPACBL KX3 to KXPA100 Integrated IO Cable
3) KXUSB  USB Interface Cable
4) E870023 KXPA Power Cable with Fuses
5) RCA-RCA Cable RCA-M to RCA-M


I assembled this package and used it lightly for a little over a year. I
also updated all of the firmware. It is an impressive, quiet radio. I am
selling to purchase a new fixed station radio.
Items will be shipped in all of their original packaging, boxes, and
original bound manuals. Manuals as well, are flat clean and as new.  All of
the above will be shipped 2nd day UPS or FedEx, insured.
The condition for all items is as new. no scuffs or scrapes dents or dings.
Pictures will be available upon request. I bought them as a complete set
and that is how I am selling them. All sales are final.
Payments accepted are, Paypal, Vemmo, Zell, a cleared check, or a
money order.
QRZ information is accurate.
 Thanks for looking.


Stephen B. Plotner - *W5SBP*
Plotner Mechanical Design & Prototyping, LLC
1616 Skidmore Ln.
Tyler, TX 75703
903.372.3057 (Always)

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Re: [Elecraft] K2: Filter Aliginment software for Apple MACs.

[John Magliacane via Elecraft]

 Francis,

I use Baudline under Linux for various audio spectrum analysis tasks. There's a 
Mac version as well:

https://baudline.com/what_is_baudline.html

https://baudline.com/download.html


73 de John, KD2BD
  
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Re: [Elecraft] K4 Rx is awesome...

[john]

Interesting conclusion.  



David Fifield AD6A wrote:

I've been using my K4 at 100W (per the FD rules) this afternoon on several
bands.
I am 1D OR.
I can hear many many stations but hardly any of them can hear me.
To me, this means that the K4 Rx is bomb-proof, sensitive, selective, and
just, well, awesome.
If the other stations had better receivers, they might be able to hear me
calling them. 
They are obviously bogged down with on-site overload/spurii/phase noise etc.

What a pity. 
I gave up replying hopelessly to CQFD's from other 100W stations and went
and did some woodworking instead.
Much more satisfying. Oh well..

73, Dave AD6A

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Re: [Elecraft] When/where was recent officialupdate (from WA6HHQ?) on K3 option last time buy ship status?

[john]

Dave,

Below are WA6HHQ's posts regarding the K3 options shipping schedule. I hope
that this gives you the clarity that you're looking for! On the two year
anniversary of my order I emailed the sales department. I was told that my
order is still pending and to look for updates on the list and newsletter.

John KK9A

 
1-mar-2023
https://mailman.qth.net/pipermail/elecraft/2023-March/292162.html

2-dec-2022
https://mailman.qth.net/pipermail/elecraft/2022-December/291557.html

2-may-2022 https://mailman.qth.net/pipermail/elecraft/2022-May/289523.html


Dave wb0gaz wrote:

 Not sure where to look as I've not followed too closely --- where should I
look to get most recent official update (presume from WA6HHQ?) re K3
options?

I'm awaiting K3EXREF for >2 years and contemplating discarding the K3 if I
am unable to get clarity on schedule.

Thanks,

73 Dave WB0GAZ 


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Re: [Elecraft] Signal source for KX3 temperature frequency calibration

[John Harper]

tinySA Ultra:
https://www.tinysa.org/wiki/

John AE5X
https://ae5x.blogspot.com

>The XG50 signal generator is no longer available and I’m in need of a
stable signal to do the >extended temperature compensation procedure on my
KX3. I remember a discussion about using >the K3’s external converter
output but cannot locate any details.

>
>Any suggestions?
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[Elecraft] MH-3 hand microphone

[John Harper]

>After a long wait, finally received my MH3. Thank you!


How long? I'm tempted to order a KX2 with mic & ATU but not sure if the
waiting time for the mic would further delay the shipment of the KX2.

Tnx/73,

John AE5X
https://ae5x.blogspot.com
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Re: [Elecraft] Microphone Setup Confusion

[john]

Bias is a much lower voltage than phantom power.

John KK9A

Alan Geller K6ADG

Is what Elecraft calls mike "bias" in the K3 and K3s Owners handbooks 
Equivalent to the "48 volt ghost voltage" required for condenser mikes et al
In the broadcast and music industry ?

It is mentioned that "mike bias" needs to to be turned on for condenser type
mikes
But off for dynamic types which is also equivalent for the more common 
Term  "48 volt ghost voltage"

Thanks for any help

Alan/K6ADG

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Re: [Elecraft] Auxx Spkr Out K3

[John Simmons]

I believe the book says you can but be *absolutely certain* the SPKRS=1


--
73,
-de John "Curly" NI0K in rural Debs, MN USA
Hamshack Hotline: 610271
https://www.qrz.com/db/NI0K

Wilson Lamb via Elecraft wrote on 4/29/2023 3:02 PM:

Will the K3 be harmed if a mono plug is put into the jack?
I know it's a stereo output, but don't know how it reacts to a mono plug 
shorting one channel to ground?
WL
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Re: [Elecraft] KPA500/KAT500 with Yaesu FT-710 Transciever

[john]

You could just connect the RF cables and the relay cable and let the KPA/KAT
detect and automatically change bands. It will work very well this way.

John KK9A


William Santos KN6UDK wrote:

Hello gang,

I'm considering purchase of a KPA500/KAT500 combo to use with my FT-710
Transciever.

Under the "Cables for non-Elecraft Transceivers" section of the KPA500
Elecraft web page, the FT-710 is not listed.

1. What cables do I need for a KPA500/KAT500 combo interfaced with a Yaesu
FT-710 Transciever?

2. Does anyone out there use this configuration? How do you like it? Any
quirks, problems, workarounds?

Thanks and 73,

Bill
KN6UDK

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Re: [Elecraft] Issue with KPA-1500

[john]

Does "FAULT mode immediately after going into Op mode" mean you that
switched from STBY to OPER and it FAULTS before you even transmitted?  If
that is the case, try disconnecting everything.

John KK9A 

Edward NI6S wrote:

Having this issue with my KPA-1500. Goes into FAULT mode immediately after
going into Op mode. I have thoroughly seated all the cables. This unit is
brand new.  See attached photo.  Thoughts?

Thx/Ed NI6S



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[Elecraft] RFI wiht my KX3

[John Pierce via Elecraft]

I am trying to use a dynamic mic with my KX3 and have RFI on my output.  I
am using the KX3 as a driver to a KM3KM amplifier looking to get about 400
to 500 watts output.  I have a small pre-amp between the mike and the KX3.
I have modified the pre-amp to ground the lines from and two the pre-amp at
the XLR input/outputs.  What frustrates me the most is that I do not have an
oscilloscope to diagnose the problem.  I have tried using toroid on all
lines, including power lines without any success.

 

Is it possible to accomplish what I am trying to do?

 

John, AD2F

 

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[Elecraft] KX3 RFI

[John Pierce via Elecraft]

I am trying to use a dynamic mic on a KX3 and have RFI on my output.  I am
using the KX3 as a driver to a KM3KM amplifier looking to get about 400 to
500 watts output.  I have a small pre-amp between the mike and the KX3.  I
have modified the pre-amp to ground the lines from and two the pre-amp at
the XLR input/outputs.  What frustrates me the most is that I do not have an
oscilloscope to diagnose the problem.  I have tried using toroid on all
lines, including power lines without any success.

 

Is it possible to accomplish what I am trying to do?

 

John, AD2F

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[Elecraft] Elecraft Test Equipment Applications

[John Oppenheimer]

Fun today using Elecraft test equipment for purpose of measuring Ferrite
loss as a function of power. K3, DL1, and CP1.

Visit QSL.net, requires password access,

https://forums.qrz.com/index.php?threads/ft240-52-power.855486/page-3#post-6489172
https://forums.qrz.com/index.php?threads/ft240-52-power.855486/page-4#post-6489595

John KN5L
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Re: [Elecraft] Looking for two 250 hz filters for K3

[john]

I believe Inrad still sells them: 
https://www.inrad.net/product.php?productid=149&cat=140&page=1

John KK9A

Erik Wheeler N1CFO wrote:
Hi all,

I'm looking for two 250 hz filters for my K3.

If anyone has some for sale, or can point me in the right direction to find
some, I'd appreciate it.

73,
Erik
N1CFO

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Re: [Elecraft] Using ANTLION MODMIC 4 with Elecraft K3

[john]

The Heil AD-1-K adaptor works fine on a K3S with my electret mic so no
adaptor modification should be needed, unless yours is defective.  As others
have said, you can try the back mic jack.

John KK9A


w5wz wrote:

Anyone using an ANTLION MODMIC 4 with an Elecraft K3?

I'm having difficulty.  The Modmic works great plugged into my PC Mic 
Input on the front panel.

I believe the ModMic is electret - requiring BIAS, which I know is 
turned on at CONFIG > MIC > press #2, so the end result is FP.H BIAS.

A Heil AD-1-K is plugged into the front panel; however, pin 6 (8v) is 
not wired to the mono 1/8 mike jack on the adapter.  The Modmic uses a 
T-R-S 1/8 inch.

What is the correct pinout for the K3 front mic jack to the Modmic?

--Scott, W5WZ

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Re: [Elecraft] SP3 for sale

[John Paul Keon]

I wish I had waited.  I ordered a SP4 to add to my K3S so I could
use the split capability and DIVERSITY with mine.
It would not work with one speaker.
And now you have to wait to get just about anything; but, I did
get mine.  And it was not cheap.

Enjoy
"ZUT"

de John Paul // AB4PP

On Tue, Mar 7, 2023 at 8:45 AM Don Greenbaum  wrote:

> Got the SP4 for my K4D today.  So I can put the SP3 in the closet for the
> rest of my life (next to other elecraft radios and accessories) or put it
> out for sale since Elecraft no longer makes them.
>
> $125 plus shipping.
>
> Don
> N1DG
> Duxbury, MA 02332
>
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Re: [Elecraft] KX3 and KPA1500 compatibility

[john]

Your questions regarding if you can use a KPA100 and KPA1500 together has
been recently asked on this list and the answer was YES.

I suspect, as K9YC noted, that the real issue is with your antenna.  You did
not specify exactly what you have tried.  A 1/4 vertical with a decent
counterpoise will work very well but I suspect that the vertical you tried
was something else. A simple center fed 1/2 WL dipole with the center as
high as possible should also get you into the net with your 100 watts amp,
no tuner needed.  

John KK9A



Karl AF5LQ wrote:

I have a KX3 and a KPA100 amplifier but despite various attempts at
verticals, end feds, OCFs, and loops, am unable to call anyone, especially
on Elecraft 80 m Sunday nets on 3.784 or 3.786. Reception is adequate with
most 5/8 or 5/9 and verify against the call- in list. A lot of people seem
to get by with a KPA 500 but reception is not as solid as those running the
legal limit. My understanding is that the KX3 is compatible with the KPA
500. What about the KPA1500?
Question: Is it possible / practical/ safe to daisy-chain a KX3 to a KPA100
and drive a KPA1500? 
Thanks and 73, 
Karl AF5LQ

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Re: [Elecraft] Checking out Elecraft on ChatGPT

[john]

Maybe sending the text a third time will work:)



Alan Bloom n1al wrote:


That's weird.  The spaces were there in the sent message - they somehow 
disappeared in the reflected copy.;  Let's try again:

CompareanElecraftK3withanElecraftK4.

TheElecraftK3andElecraftK4arebothhigh-endAmateurRadiotransceiversdesignedfor
performingradiooperationsinboththeHFandVHF/UHFbands.TheK3isthepredecessortot
heK4,butbothmodelsoffertop-of-the-lineperformancefortheirrespectiveclasses.

TheK3isanHF/VHFtransceiverthatoffersupto100wattsofpoweroutput.Itfeaturesadua
l-channelreceiver,anoptionalroofingfilter,andabuilt-inantennatuner.Itisamodu
lardesign,allowinguserstocustomizetheirsetupwithadditionalmodules,suchasadig
italvoicerecorder,remotecontrol,andCWdecoder.

TheK4isanHF/VHF/UHFtransceiverthatoffersupto200wattsofpoweroutput.Itfeatures
adual-channelreceiver,roofingfilters,andanintegratedantennatuner.Italsoinclu
desabuilt-indigitalvoicerecorderandaCWdecoder.Italsosupportsanoptionalremote
control.

Intermsofperformance,theK4isthesuperiorofthetwomodels,asitprovidesmorepowero
utput,abroaderrangeoffrequencies,andadditionalfeatures.However,theK3isstilla
capabletransceiver,anddependingontheuser'sneeds,itmaybethebetteroption.

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Re: [Elecraft] KPA1500 opinions

[john]

N4ZR posted a similar question on August 12, 2022 and few people publicly
responded. I am sure some people will privately email you with their
experiences. It seems like some people have great luck with the KPA1500 and
others keep blowing LDMOS finals. It would be nice to pinpoint the cause for
blown finals, power level, mode, antenna etc. Reducing power reduces the
efficiency so much that doing so does not help reduce the final's heating. I
also follow the SPE Expert list and blown finals is a common topic there.
LDMOS finals are nowhere near as forgiving as ceramic tubes! I have not
heard of any issues with the KPA500 finals, even from people that have had
blown their KPA1500 so it may be more robust.

John KK9A



Scott Manthe N9AA wrote:

Hi Everyone,

I'm in the market for a legal limit solid state amp. There are lots of 
options out there, but I've been an Elecraft fan since the beginning and 
have owned a KPA500, K3/P3, and KX3/PX3. So, obviously I'm a fan. 
However, I'm also aware that over the years, some of the gear has had an 
issue or two, which generally have been taken care of by the good folks 
in Watsonville.

So, for the KPA1500 users out there, do you have any serious issues to 
report for the KPA1500? I have "heard" that they're not as robust as the 
KPA500 and that occasionally there have been failures with the PA 
devices. Is this true? I was one of the people that saw the KPA1600 run 
all day every day at Dayton years ago, and have dreamed of that amp ever 
since. I know the KPA1500 probably can't live up to that ideal, but are 
there issues a potential buyer should be aware of?

Thanks in advance for any and all feedback.

73,
Scott N9AA

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Re: [Elecraft] A few words about the CP1 bidirectional coupler kit

[John Oppenheimer]

Hi John, good read, thanks,

John KN5L

On 2/6/23 3:52 PM, John Harper wrote:
> Well, maybe a few hundred, plus 3 photos:
> https://ae5x.blogspot.com/2023/02/the-utility-of-elecrafts-cp1-bi.html
> 
> If you're one of the many who now have a tinySA...
> 
> 73,
> John AE5X
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[Elecraft] A few words about the CP1 bidirectional coupler kit

[John Harper]

Well, maybe a few hundred, plus 3 photos:
https://ae5x.blogspot.com/2023/02/the-utility-of-elecrafts-cp1-bi.html

If you're one of the many who now have a tinySA...

73,
John AE5X
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[Elecraft] Fwd: Morse Code is making a comeback! (Relevant to Elecraft)

[John Harper]

K-Pop bands - and coming soon, KX-Pop bands.

John AE5X
https://ae5x.blogspot.com
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[Elecraft] KXFL3 - How to Use It

[John Overbaugh]

Ok every field day, I complain about loud signals stomping on me. Everyone
says “then get a roofing filter,” so I bought, installed, and configured
the KXFL-3 in my KX3 recently. And I have NO idea how to use it. The Cady
book explains what it does and how to configure it but don’t really cover
when and how to engage it. The Elecraft install instructions do as well.
I’m led to believe that it kicks in automatically, could that actually be
the case or am I missing something?

TL;DR: can anyone point me to interwebz or printed content on how to use
the KXFL3 roofing filter, in time for WFD this weekend?

Thanks again,

John O.
K7JTO
Salt Lake City, Ut, USA

KX3 with built-in tuner, KXPA100 with built-in tuner
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Re: [Elecraft] KX3, FLDIGI, SignaLinkUSB - Not Exiting XMIT Mode

[John Overbaugh]

Big thank you to Hank K4HYJ who mentioned Data A is a little different from
SB when it comes to the XMIT function. I believe I’ve been operating PSK in
USB till now, and just… put it into Data A mode. Changing the Mike PTT to
off fixed it in Data A mode, and it works as usually in USB mode.

I really appreciate this group. I don’t often reach out, but every time I
do, I get the right answer in a matter of hours.

I do have a follow up question. I will start a new thread on that.

On Tue, Jan 24, 2023 at 12:12 PM John Overbaugh 
wrote:

> I have a KX3, running through the KXPA100, connected via Serial USB to
> a Windows 10 machine. I'm using Win4k3 2.0.4.0 and com0com to share
> out the COMPort. I have N3FJP's Amateur Contact Log running, as well
> as FLDIGI v 4.1.18 in normal mode.
>
> When I run a macro in FLDIGI, the macro engages the XMIT mode, sends
> the data via PSK, and disables TX mode, and I can hear a switch flip
> in the KX3, but 1) the transmit light is still red and 2) there is no
> RX. If I manually press the XMIT button, the light goes off and RX
> begins again.
>
> This is a new development which started earlier this morning as my
> Elmer was running PSK for VOTA (W1AW/7). No apparent changes were made
> to configuration.
>
> I've reviewed the Cady book on PSK settings, and double checked
> connections from the KX3, Signalink, and KXPA. No obvious issues.
>
> Has anyone seen this in the past?
>
> 73 de K7JTO
> John O.
> Salt Lake City UT USA
>
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[Elecraft] KX3, FLDIGI, SignaLinkUSB - Not Exiting XMIT Mode

[John Overbaugh]

I have a KX3, running through the KXPA100, connected via Serial USB to
a Windows 10 machine. I'm using Win4k3 2.0.4.0 and com0com to share
out the COMPort. I have N3FJP's Amateur Contact Log running, as well
as FLDIGI v 4.1.18 in normal mode.

When I run a macro in FLDIGI, the macro engages the XMIT mode, sends
the data via PSK, and disables TX mode, and I can hear a switch flip
in the KX3, but 1) the transmit light is still red and 2) there is no
RX. If I manually press the XMIT button, the light goes off and RX
begins again.

This is a new development which started earlier this morning as my
Elmer was running PSK for VOTA (W1AW/7). No apparent changes were made
to configuration.

I've reviewed the Cady book on PSK settings, and double checked
connections from the KX3, Signalink, and KXPA. No obvious issues.

Has anyone seen this in the past?

73 de K7JTO
John O.
Salt Lake City UT USA
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Re: [Elecraft] Keying the K3s

[john]

I do not believe that 5 and 50 watts cause issues on the K3S.  I do not
recall seeing this in th manual and I have never had an issue doing it.

You can search Elecraft archives here:
https://www.mail-archive.com/elecraft@mailman.qth.net/maillist.html

John KK9A




Lee Hiers AA4GA wrote:

How would one search the archives for this info?

Is this only the K3S, or does it also include K3?  How about a K3/10?

And you're saying one should never transmit with the transmitter set to 5W
(or 50W)?

I do drive an Alpha 8410 with my K3/10 -  and I've probably done so at 5W
out of the K3/10, although normally I'm using 12W.

I would appreciate a link to something that indicates this is a bad thing
to do.

73 de Lee, AA4GA

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Re: [Elecraft] Muting the K2

[John Magliacane via Elecraft]

 Ray,

For what it's worth, I've been running a homebrew solid-state QSK CW 
transmitter for the past 4 years. My T/R relay is an AXICOM V23105A5303A201. It 
is a dual SPDT relay where each SPDT section is tied in parallel for greater 
power handling capability. The receiver is connected to the antenna through the 
relay on receive, and is allowed to "float" as an open-circuit on transmit.

The relay is controlled through timing and logic circuitry so that it becomes 
energized before any RF is produced, and de-energized after the RF envelope has 
decayed to zero. While I own a K2/100, I have been using this transmitter with 
either a Drake 2C or R4C receiver until I homebrew my own.

I just ran an experiment where I terminated the RCVE port with a 50 ohm load 
and measured the RF voltage across the load with a scope. On 40 meters where my 
transmitter produces 64 watts, I measured about 0.8v p-p across the terminated 
RCVE port, or about 1.6 mW (2 dBm) of RF. That equates to 46 dB of isolation at 
7 MHz. This seems consistent with the isolation specs on the relay that can be 
found here: https://www.farnell.com/datasheets/1918250.pdf.

The Drake receivers handle this signal level with ease, but I haven't tried the 
K2.

Incidentally, Jim, W6PQL has additional information on using inexpensive relays 
in RF circuits at his website: 
https://www.w6pql.com/using_inexpensive_relays.htm


73 de John, KD2BD
  
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Re: [Elecraft] K4 recommendation - wait for HD or no?

[John Simmons]

I recall reading *somewhere* the story of two hams that lived in 
adjacent lots about 300-500 feet apart. They cooperated and tried lots 
of remedies to eliminate interference with each other. They each wound 
up with a K3. When the upgrades for the 'S' became available, both 
installed the appropriate options in their K3 radios. After that they 
could operate within 10 KHz of each other without knowing- at legal 
limit. YMMMV



--
73,
-de John NI0K rural Debs, MN
https://www.qrz.com/db/ni0k


Dave (NK7Z) wrote on 1/18/2023 7:40 PM:

Hello Joe,

I am in somewhat the same situation as you are, just not as bad...  I 
have a KW level Amateur living about 700 feet from me.  I had a K3, 
and as long as we were not within 50 KHz of each other, he really did 
not bother me, save when he was hammering his ALC-- but that is a 
different story...


I also have several other Amateurs all living maybe 1 to 2 mile from 
me.  All running 500 to 100 watts.


I was very worried that the K4D would have issues with any of them 
when they were transmitting.


So far the K4D had behaved as the K3 did, some interference, (not 
much), when the KW level fellow comes on line, and only on the same 
band.  I have tested other bands while the KW level ham is 
transmitting, and if I am on a different band, I can not hear him...  
With regards to the Amateur running 500 watts a mile from me, the K4D 
behaves marginally BETTER than the K3 did.


That is not the same as having another ham a one wavelength away, as 
you describe, so your mileage WILL vary...  I will NOT be purchasing 
the HD module, as it appears I do not need it...


My guess is you will see worse performance than I do, due to your very 
close proximity to the other Amateur, but I can't predict how much 
worse...  The K4D is remarkably tolerant of strong signals.


73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 1/18/23 11:53, Joseph M. Durnal wrote:

I share a property line with another ham. Some of his low band wires are
within a wavelength  of my vertical.  When he's  transmitting, I rarely
notice with K3 unless I'm really close.  The IC-7300, he can wipe out my
receive if we are trying to work on the same portion of the band.

I have my sights set on a K4D, but wondering if I should be 
considering the

HD version.

Thanks & 73 de Joe NE3R
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Re: [Elecraft] Win4K3 - Virtual COM Ports on Windows 10

[John Overbaugh]

This was my mistake for not reading clearly - I installed the
(unsigned) v 3.0 program. Uninstalling that, and installing the signed
2.0 version got me up and running.

On Sun, Jan 15, 2023 at 6:18 PM Lou Laderman  wrote:
>
> Have you contacted Tom VA2FSQ for support? com0com is his recommended program.
>
> 73, Lou W0FK
>
> Lou Laderman
> Sent from my mobile device
>
> On Sun, Jan 15, 2023 at 8:27 AM John Overbaugh  wrote:
> >
> > I'm trying to set up my KX3 on a new Windows 10 computer using Win4K3.
> > Has anyone found a satisfactory solution to com0com's test driver
> > issue? Windows 10 enforces signed drivers; because com0com is a test
> > driver Windows doesn't trust it. I don't want to disable secure boot
> > and allow unsigned drivers, so the work-around isn't acceptable to me.
> >
> > Has anyone found a driver they like which creates virtual com ports?
> >
> > 73 de K7JTO
> > John O.
> > Salt Lake City
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Re: [Elecraft] Diversity

[John Harper]

And Apache Labs (and SunSDR, I think).

John AE5X
https://ae5x.blogspot.com

>The FLEX series of radios can do true stereo diversity.
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Re: [Elecraft] Anyone been successful doing this?

[john]

Good advice, especially the caution on the keying current of older amps!
Also notice that Jim did not say to connect the ALC, just watch your K3
drive level.

John KK9A


Jim Brown K9YC wrote:

On 1/15/2023 9:46 AM, Tom & Barb Valosin wrote:
> How did you do it? That is, what connections are required other that the 
> K3 RF out to the amp RF input?

Study the manuals for both units. For all the amps I've used (three 
different Ten Tecs, an ACOM, both KPAs), Key Out from the K3 to Key In 
for the amp was all I needed, but it depends on the positive/negative 
logic of the amp. In a well-designed amp, the Key Input will drive a 
transistor, so very little current. You may also need to set a longer 
delay in the K3 do allow for the amp's T/R relay(s) to pull in. I 
remember a longer setting being required for an Ameritron I encountered 
at a contest multi, but that was from an FT1000MP. There's a menu setting.

73, Jim K9YC

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[Elecraft] Win4K3 - Virtual COM Ports on Windows 10

[John Overbaugh]

I'm trying to set up my KX3 on a new Windows 10 computer using Win4K3.
Has anyone found a satisfactory solution to com0com's test driver
issue? Windows 10 enforces signed drivers; because com0com is a test
driver Windows doesn't trust it. I don't want to disable secure boot
and allow unsigned drivers, so the work-around isn't acceptable to me.

Has anyone found a driver they like which creates virtual com ports?

73 de K7JTO
John O.
Salt Lake City
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Re: [Elecraft] Looking For A KIO3B And K3DVR

[john]

I have had a K3DVR on order for 90 weeks, hopefully it arrives soon.

John KK9A


David Gilbert ab7e wrote:

Good luck.


On 1/14/2023 10:51 AM, Ramon Batista wrote:
> I'm Looking For A KIO3B And K3DVR, Buy Or Trade.
>
> Ray WD4X
> 239-227-9414

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Re: [Elecraft] Power to the Tuner

[john]

You can power the KAT500 directly from your station 12v power supply.  If
the K3S is taken offline for service you won't have a way to use the KAT500
with your Icom backup radio using your current configuration.

John KK9A


Richard FlatHat W4KBX wrote:

Recently, I bought an IC-7300 as a backup radio, and I've been busy
integrating it into my station in such way that makes it quick and easy to
switch from the K3S to the 7300. Related to that integration I have a
question about powering the KAT500.

Normally, the KAT500 takes its DC power from the K3S. The easiest way to
power the KAT500 when using it with the 7300 is the have to K3S powered up
but not connected to any of the antennas. All of its other radio-to-tuner
cables remain connected as usual.


Is there any way this arrangement can hurt either radio, especially the K3S?
It's already been back to the factory once.

If that's safe for the radios, my IC-7300/KAT500 setup tuner power options
are:

Continue powering the tuner from the K3S. -- My choice.
Temporarily unplug the K3S DC power cable from the KAT500 and plug in a
separate 12-volt supply. This semi-acrobatic feat, performed by touch alone,
must be done every time I switch either way.

I'd prefer to let the K3S power the tuner, but is that safe?

Cheers!

Richard Kunc
W4KBX

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Re: [Elecraft] 1500w K2/10?

[john]

I think this only works if one of the amps is off.  I you want to use both
amps simultaneously to obtain 1.5KW, there may be an issue with the two
relay voltage sources.

John KK9A


Jim Brown K9YC wrote;

> he KXPA100 MANUAL SHOWS THE ability to use a Y rca keyline cable, one end
going to a kxpa100, the other going to an external amp, in my case a
kpa1500.
> Will this work?

Sure, as long as both amps use the same logic for keying. I've done it 
for years with a K3, switching between a KPA500 and Ten Tec Titan, using 
relays to switch inputs and outputs.

73, Jim K9YC

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Re: [Elecraft] K3 & K3S Options Last Time Buy Update (12/02/2022)

[John Harper]

I'm looking forward to the day KX2's are once again available. Had one once
& sold it...now with POTA becoming popular, I'd like to have a KX2 again
but estimated shipping times have been "12-16 weeks" for months.

Any updates on the KX-line?

John AE5X
https://ae5x.blogspot.com

>We will be posting updates for these products as they each get closer to

>shipping.
>
>Thank you again for your patience.
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Re: [Elecraft] New KX2 & KX3 T-shirts, K4 padded bag

[John Hiatt]

Click the Show Options button next to the one you are interested in.

John, KC7DRI


From: elecraft-boun...@mailman.qth.net  on 
behalf of David F. Reed 
Sent: Wednesday, November 30, 2022 8:01 AM
To: Wayne Burdick 
Cc: Elecraft Reflector Reflector 
Subject: Re: [Elecraft] New KX2 & KX3 T-shirts, K4 padded bag

Wayne,

For the T-shirts, I seem to only see size “S” available; am I missing something?

73 de W5SV - Dave

> On Nov 30, 2022, at 03:07, Wayne Burdick  wrote:
>
> You can find these on our Winter Specials page:
>
>https://elecraft.com/pages/winter-specials-delivery-by-december-24
>
> Click on the small photos to see much larger ones.
>
> 73,
> Wayne
> N6KR
>

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Re: [Elecraft] Running high power

[john]

What antenna, choke and feedline are you using? 

John KK9A


Al Lorona W6LX wrote:

I'm really curious to ask those on this list who run high power:

Do you find that you get into all kinds of devices around the house?

I ran the KPA-500 in an extended manner for really the first time during the
Phone SS and immediately:

1/ interfered with FM broadcast radio.

2/ caused the internet to drop out every time I keyed up on the lower bands.

Am I the only one? Those of you who run high power all the time... how do
you deal with these annoyances?

Al  W6LX/4

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Re: [Elecraft] Yamaha Headphones

[john]

Koss makes a SB45 headset and a SB45 USB headset. If it does not have USB
listed it should have the 3.5mm connectors that you wanted.

John KK9A
 


Mike Smith VE9AA wrote:

While that may be true Jim, the Koss SB45's I saw on Amazon.ca (ca=Canada)
had USB plugs on the ends of them, not the 1/8" phono type for Mic and Ear
(stereo).

 

I looked at many ads, and there was enough inconsistencies in the ads (some
ads showed USB & 1/8" pictures, both) that I did not buy that particular
model.

 

I was headed to the Caymans for a contest expedition and time was of the
essence, so I erred on the side of safety as there would not be enough time
to buy the proper one later, should I have rec'd the USB ones (that were no
good to me)

 

Mike VE9AA (ZF2AA in CQWW SSB 2022)

 

 

Mike, Coreen & Corey

Keswick Ridge, NB

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Re: [Elecraft] Yamaha Headphones

[John Marvin]

Proximity effect has nothing to do with the technology of the 
transducer, i.e. dynamic, condenser, electret, ribbon, etc.


Proximity effect is due to the type of transducer, i.e. whether it is a 
pressure transducer or a pressure gradient transducer or a mix of the 
two. That determines the pickup pattern, and that also determines the 
amount of proximity effect the mike has.  A pure pressure transducer has 
an omni-directional pickup pattern and absolutely no proximity effect.  
A pure pressure gradient transducer has a figure 8 pickup pattern (i.e. 
bidirectional cardiod) and the highest level of proximity effect.  One 
of the most common pickup patterns is the cardioid pattern, which is a 
directional pattern and has a decent amount of proximity effect.


Your experience with dynamic vs. condenser mics was probably more to do 
with the pickup pattern. There are a variety of "cardioid" patterns, one 
of them being hyper cardioid, which is more prevalent in condenser 
mikes.  It is more directional than a cardioid and has further "reach", 
which would allow a vocalist to be further away from the mike and still 
be picked up well (but would fall of quicker if they moved off to the 
side).  That further distance could significantly reduce or eliminate 
proximity effect.


Another possibility is a sub cardioid pattern which is less directional 
than a standard cardioid pattern, which would also have less proximity 
effect at the same distance from the mike.


John
AC0ZG

On 11/21/2022 2:56 PM, Joe Subich, W4TV wrote:

An electret mic is much easier/cheaper to manufacture than an
equivalent dynamic capsule.  With the built-in FET follower,
the electret output is some 20-25dB higher than the dynamic
making RFI and hum reduction much easier to manage in consumer
electronics.  In addition, the electret does not suffer as
badly from the proximity effect that is common with all dynamic
mics (a benefit of using condenser mics for studio vocals -
particularly with vocalists that don't know good mic technique!).


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[Elecraft] K3 #8862 unwanted sidebands

[John Harper]

Elecraft sells a 2T-Generator for those who want to check IMD performance
of other rigs:
https://elecraft.com/collections/2t-gen-model

John AE5X
https://ae5x.blogspot.com


--

>The K3 has a built-in two-tone generator.  I've done 100s of two-tone IMD tests
>on my K3 and K3S using them and an SDR-IQ as a spectrum analyzer.
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Re: [Elecraft] Good Natured Contesting Advice

[john]

Very true Fred, this also applies with QRM. It can be very frustrating.
Only resend the info that is being asked for.

John KK9A




Fred Jensen k6dgwn wrote:

Thompson's First Law:  "If there is QSB, his signal will be strong while 
sending all the unnecessary things you already have and then fade when 
he gets to the one necessary thing you asked for."

Thompson's Second Law:  "Repeat your request and then refer to 
Thompson's First Law."

73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

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Re: [Elecraft] Good Natured Contesting Advice

[john]

Back when I had a station in Aruba, I arrived on a Saturday and a 160m
contest was already in progress.  The very first station that I called
responded QSO B4 and blew me off!

John KK9A aka P40A

  

Jim Brown K9YC wrote:

He was wrong and you were right. Goes with the rule of smart contesters 
to ALWAYS work dupes. He likely got your call wrong, or you got his 
wrong. If the former, he gets penalized.

73, Jim K9YC

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Re: [Elecraft] QRP and Contesting

[john]

This is all good contesting advice Mike, especially regarding working dupes.

Thanks for the SS QSO,
John KK9A



Mike Dodd N4CF wrote:

I'll toss in my two cents

I have fair-to-middlin' CW skills, and I've operated a lot of CW 
contests. I was surprised and disappointed to hear so many high-speed 
ops in this year's CW SS. In past years, I've been pleased with the 
moderate speeds.

When I'm operating S&P, I almost always adjust my TX speed to match the 
running station's speed. it's only a hit or two on N1MM's Page Down key. 
I figure that's the considerate thing to do.

I can comfortably copy at 25 wpm, so that's the speed I call CQ. If 
someone answers faster than I can copy, I don't hesitate to send QRS. If 
he ignores that comes back still too fast, I'll just hit F1 to start 
another CQ.

If I can't copy part of his exchange, I'll ask for a repeat. There are 
plenty of reasons for bad copy, not just speed. QSB and QRM were present 
last weekend. I don't need to explain why I asked for a repeat!

One final comment regarding dupes. The contesting club to which I belong 
has a mantra: "work all dupes!" There is no penalty, but there is the 
possibility that one op or both busted a QSO, so the second one is 
insurance. Just work 'em. you might take small time hit, but how much 
time would you spend sending B4 or DUPE, then explaining to the other op 
why you won't work him again?

-- 
73, Mike N4CF
Louisa County, VA USA
Elecraft K4D / KPA500 / KAT500
Carolina Windom up 45'

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Re: [Elecraft] QRP and Contesting

[john]

Al, if you called CQ at 30WPM and they answered at 45WPM and you had to ask
for repeats, you are not the lid! If they were running at a higher  speed
that you're comfortable with, you probably could figure out their info from
QSOs before and after you. If it is not copyable you just have to move on. I
personally did not see that many super speed ops but I did not S&P until
late in the contest when most ops were begging.  There were definitely some
very good ops last weekend and I enjoyed all of my QSOs.

73,
John KK9A  (W4AAA in 2022 SS CW)



Al Lorona W6LX wrote:

I noticed this opposite phenomenon as soon as CW SS got started. It seemed
that the average CW speed was way up this year. (I hadn't operated the SS in
a couple of years, so this trend may have started a couple of years ago and
I just now have experienced it.) 

My CW skill is decent, but even I got into hot water when copying some
exchanges: Was that 378A? Or 377U? Asking for a repeat didn't always help,
because at 45 WPM slight multipath distortions in the ionosphere start to
mess with high-speed CW. Not a single op slowed down for me, even if I had
to ask for multiple repeats.

Then there's this: When you think about it, there's no incentive to help
someone like me copy correctly. After all, if I copy incorrectly, I'm the
one who gets penalized, not him. By asking for a repeat, all I'm doing (in
his mind) is slowing him down on his run frequency. And probably ticking him
off?

I mean, 30 WPM with no repeats is actually faster than 40 WPM with some
repeats.

You may say, "Well, Al, you're a lid for entering a contest if you're unable
to copy quickly enough to participate." Maybe so, but the obstinacy of
operating at 40+ WPM no matter what shows a colossal disdain for the Little
Pistols who are the bread and butter of the elite. 

R,

Al  W6LX/4

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Re: [Elecraft] Design flaw in K3s

[John Harper]

I'm readying the popcorn...

John AE5X
https://ae5x.blogspot.com

> Note:  The original K3 has a higher wattage current sense resistor and

should be fine they cheapen the K3s
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Re: [Elecraft] Drive Control - K3 and FPA-1500

[john]

Does it overdrive only initially after changing bands and then goes to the
normal band set output?  I do not have a KPA-1500 but I seem to recall
seeing something like this with my K3S.

John KK9A

Pete Smith N4ZR wrote:

Just finished SS, and on many occasions when switching bands I found 
myself overdriving the KPA-1500 on the new band.  No harm done, but I 
thought the K3/KPA-1500 combination was supposed to manage drive on a 
per-band basis.  Did I get that wrong?

-- 
73, Pete N4ZR
Check out the new Reverse Beacon Network
web server at<https://reversebeacon.net>.
For spots, please use your favorite
"retail" DX cluster.

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[Elecraft] Fwd: Headphones

[John Evans]

Neil,

  I'm glad you took this discussion in this direction.  I, too, wear BTE
aids and though I spend most time on CW, from time to time it is nice to
work SSB.  The chat here has got me thinking how I might use my Sennheiser
headphones with foam pads as they are wonderful for music at least.  They
don't block out background noise but they are very comfortable.  All I'd
need to do is add a mic and I'd be good to go.  I'm looking at the Grado
Sr's right now so that could be an option.

73 - john - n0hj

On Thu, Nov 3, 2022 at 11:23 AM Neil Foster  wrote:

> Dan Pressley is correctheadphone choice is personal. Being severely
> hearing impaired with BTE hearing aids in both ears I found the GRADO SR
> basic phones excellent. They are open back which allows the usage without
> the nasty feedback from closed back. Not all phones are compatible with
> hearing aids.    Neil   N4FN
> john.evans.n...@gmail.com
>
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Re: [Elecraft] Recommendation for Microphone for K3s?

[john]

I really like the Sony MDR 7506 for <$100 that I believe you use for music
listening but it also has no mic.

John KK9A


Jim Brown K9YC wrote:

> I'm always surprised at all the ham-specific headsets when there are
actual professional broadcast headsets from Audio-Technica and Sennheiser
with real vocal mics.

Yes, but -- they are overkill for use in a ham station, mics are likely 
to be pro electrets, and thus complicated to hook up to a ham rig. And, 
BTW, until you spend pretty big bucks, they're not all that comfortable 
either! The Beyer and Sennheiser sets I use for listening to acoustic 
jazz are north of $300, and they don't have a mic.

73, Jim K9YC

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Re: [Elecraft] Recommendation for Microphone for K3s?

[john]

Maybe it's just a supply issue that I was seeing. CM500 is a popular 
inexpensive ham headset and even though I do not own one, I was hoping that it 
was not discontinued.  Before my original post it looked like Sweetwater also 
was out of stock:  
https://www.sweetwater.com/store/detail/CM500--yamaha-cm500-closed-back-broadcast-headset-with-boom-mic
Sorry, the Yamaha CM500 Closed-back Broadcast Headset with Boom Mic is no 
longer available. We've left this page up for reference only. Check out the 
great alternatives on this page or call toll-free (800) 222-4700 to speak with 
a Sweetwater Sales Engineer about similar products.

John KK9A

-Original Message-
From: David Sumner [mailto:dave.sumner.k...@gmail.com] 
Sent: Wednesday, November 2, 2022 1:24 PM
To: k...@comcast.net
Cc: j...@kk9a.com; elecraft@mailman.qth.net
Subject: Re: [Elecraft] Recommendation for Microphone for K3s?

I just bought a second CM500 from Sweetwater. Great customer service. They were 
out of stock but let me know as soon as new stock arrived.

Dave K1ZZ

Sent from my iPhone

> On Nov 2, 2022, at 10:44 AM, k...@comcast.net wrote:
> 
> Not sure about the manufacturing aspect but still available from amazon,
> sweetwater, etc.
> Hank / KR7X
> 
> -Original Message-
> From: elecraft-boun...@mailman.qth.net  On
> Behalf Of j...@kk9a.com
> Sent: Tuesday, November 1, 2022 9:57 PM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] Recommendation for Microphone for K3s?
> 
> Is the Yamaha CM500 still being manufactured?
> 
> John KK9A
> 
> 
> Rick NK7I wrote:
> 
> They're nothing special; you can dial in equalization just as well in the
> K3S.  I bought the Heil with my K3 and quickly gave up on them.
> 
> The Yamaha CM500 plugs into the rear (with bias) and the headphones are
> comfy for hours, without spending a lot (by comparison, you can get a few
> for the cost of one Heil).  They block most of the noise in my shack.  I
> keep a couple spares as the foam covers do wear out.
> 
> If you need to block of lot of shack noise, there are other options, most
> are expensive.
> 
> A search of the archives is recommended, this topic has been covered many
> times before.
> 
> 73,
> Rick nk7i
> 
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