Re: [Elecraft] K4D info

[James F. Boehner, MD via Elecraft]

Dave,

Yes, there is an active K4(D) discussion list:

elecraft...@groups.io 

Please be sure to read the groups description and guidelines before joining.

See you there.

'73 de Jim N2ZZ



-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Dave Sublette
Sent: Saturday, July 27, 2024 6:41 PM
To: Elecraft Discussion List 
Subject: [Elecraft] K4D info

I have been unsuccessful in finding an active K4D discussion group.  The
ones listed on Groups.io have 20 members and are not accepting new members
or are inactive. So my questions are two:

1) Is there an active K4D discussion group and if so, where?

2). I'm getting a K4D next week and I already have an external display to
use with it.  Now my question is, what use would a mouse or keyboard be in
operating the radio?


Thanks,

Dave, K4TO
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Re: [Elecraft] TL-922

[James F. Boehner, MD via Elecraft]

Josep,

Be sure to install a soft-key interface in the TL-922 before hooking it up to 
the K3.

https://harbachelectronics.com/shop/kenwood-tl-922/sk-922-soft-key-keying-interface/
 

The newer rigs were not meant to handle the voltages on the older amplifier's 
keying circuits.

I modified mine with the soft-key board and added the new capacitor block.

'73 de JIM N2ZZ

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Josep Torres via Elecraft
Sent: Wednesday, March 29, 2023 3:03 AM
To: Elecraft Reflector 
Subject: [Elecraft] TL-922

Hi guys,

Have a couple of Kenwood TL-922’s around and was thinking to connect one to a 
K3.
Has anybody done so.? And if so, how have you done the wiring.? 
Got 2 K3’s (in fact I have 3 of ‘em, but one not physically at now now) and 
maybe one day I can use the spare one with a TL-922 from another QTH.

Thanks,


73,

Josep
EA6BF
BUG #256  -  CWops #3072  -  FOC #2182 (ex 1724)



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Re: [Elecraft] Running high power

[James F. Boehner, MD via Elecraft]

Al,

I saw your question and saved it, as I knew you would be getting much better 
responses than I can give.  I have five amplifiers, as I tend to like building 
stations.

You received the responses I expected.  Grounding and bonding are indeed 
important and great information is found on K9YC's page as well as the ARRL 
publication "Grounding and Bonding for the Radio Amateur".  Yes, mix 31 
ferrites are your friend.  There are many sources; I bought mine from Pro 
Audio.  Sadly, many consumer devices are very poorly designed for RF 
environments.  Some problems can be mitigated, some not.

I do not know if anyone has talked about using a well-tuned antenna system, 
keeping SWR low and RF out of the shack.  

I am fortunate that the only interference to devices in my home occur on 160, 
but I'm sure most of that is because I'm using an antenna similar to a G5RV fed 
with 450 ohm twin lead, I short the twin lead and then use an UNUN and antenna 
tuner to achieve resonance. (?Marconi "T"?)  I do have a counterpoise.

I know many do not talk about amplifiers as they are shamed for using high 
power.  Whatever.  I saw someone at the 2019 Dayton Hamvention with a shirt 
that said "1500 watts - 1 watt = QRP!"  No shame there.

The one thing I do know, the problems that you can get from a high-power home 
installation do not even come close to running high power mobile.  That WAS a 
nightmare.

The one universal thing about amplifiers is that when the doorbell rings, the 
amp gets turned off!

Good luck-this is an interesting journey!

'73 de JIM N2ZZ



-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Al Lorona
Sent: Wednesday, November 23, 2022 11:06 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Running high power

Thank you for all your responses. I did not mean my question to solicit the 
thousands of ways of solving this problem, but merely a poll of hams' 
experiences running high power. Based on all of the private and public 
responses I received, it's about 50% who've had problems with consumer 
equipment and high power.

If the problems are caused by simple RF overload of the piece of equipment, 
I've never understood why balanced or unbalanced antenna systems make any 
difference. If your 1500 W signal induces a large interferer on the circuitry 
of your internet modem or garage door opener, the device has no idea whether 
you're using a Yagi or a dipole or a vertical or whatever. It's just being 
overloaded because it's in the near field of the antenna and has very poor 
rejection and filtering. You could have the best-balanced antenna system in the 
world and still get into a poorly-shielded modem, couldn't you? The 
interference isn't coming in through the wires, it's coming in through the air!

I tend to resonate with K9YC's assertion that there are a whole lot of devices 
out there that are designed badly, susceptible to the slightest overload. When 
I look at my own situation I notice that I have tons of devices that were 
completely unaffected. My telephones, lights, garage doors, overhead fans, 
smart thermostat, and many others-- all of which have RF circuitry to one 
degree or another-- were never bothered.

Taking the FM radio in the kitchen as an example, you could make the argument 
that since its whole purpose in life is to receive weak signals, that it's 
particularly vulnerable to a large HF signal. But not a single person mentioned 
that they've ever heard themselves coming through their FM radio. I must have 
the only cheap table radio in America!

Anyway, I envy those of you who told me, "I haven't the slightest idea what 
you're talking about." 

R,

Al  W6LX

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[Elecraft] OT: KWM-380

[James F. Boehner, MD via Elecraft]

I'm sorry you had so much trouble with your KWM-380.  My experience is quite
the opposite.  I did send mine to be completely refurbished and calibrated
and it is easily the quality of my KWM-2A and more.  Techs who work on the
KWM-380 are listed on the Collins Collectors Association website.  I used
Bob Struk KX6K.

Sorry about the off-topic post.

'73 de JIM N2ZZ

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Bill Tippett
Sent: Sunday, April 3, 2022 6:12 AM
To: Elecraft Reflector 
Subject: [Elecraft] KWM-380 (was K4 and Delivery Delays)

W0YK wrote:
The KWM-380 may have been a "hot radio" in some people's minds, but I can
personally attest to the opposite.  I have one, along with a number of
KWM-2As and S-Lines.  The 380 is a horrible performer.  The receiver is
incredibly noisy, obstructing reception of all but the loudest signals.
The audio is distorted and filtering is poor.  Collins' last hurrah was a
dud.

Hi Ed,

I don't recall ever telling you this but your 380 also had horrible TX phase
noise. In the early 80s, we were located within 5 miles of each other in CO,
both running amps. Whenever you transmitted on 80 or 160, the phase noise
would cover the entire CW bands. I don't recall what you replaced the
380 with but I was a very happy camper when you did!

I take pride that my KSYN3A-updated K3 is still one of the cleanest CW
signals on the bands.

73, Bill W4ZV (ex-W0ZV)
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[Elecraft] OT: KWM-380

[James F. Boehner, MD via Elecraft]

OK,

I know this is the Elecraft list, but since the topic of the Rockwell-Collins 
KWM-380 seems to be of interest, I have one (serial number 14), and yes, it is 
no comparison to the rigs of today, especially the K4.  It was introduced at 
the 1979 ARRL Midwest Division Convention in Cedar Rapids, IA with a price tag 
of $2,995 without options.  Using an inflation calculator would put it at 
$11,704 in today's dollars, fairly close to the cost of an ICOM IC-7851.  It 
really is a sweet radio, and VERY fun for non-competitive operating.  It truly 
was ahead of its time.  Only 3000 of these units and the HF-380 (its commercial 
cousin) were made.  Production ended in 1986, and was the last amateur radio 
unit made by the company.

I don't want to continue an OT discussion here, but if you have an interest, 
please look at my QRZ.com page for a few pictures.

'73 de JIM N2ZZ



-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Fred Jensen
Sent: Wednesday, March 30, 2022 9:39 PM
To: Scott Manthe 
Cc: Elecraft List 
Subject: Re: [Elecraft] K4 and Delivery Delays

There's not a lot on the web re: KWM-380 except for sales.  I recall little 
about it except that it was very expensive for the time.  I think the KWM-2 
went for about $1,500 new? in the 60's, that would be about
$15,000 in today's money, although it wouldn't be an attractive transceiver in 
today' world.  But, a -380 was a pretty hot radio in those days.

73,

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

Scott Manthe wrote on 3/30/2022 3:53 PM:
> Back in the late 70s or early 80's, when I was a teenager and a 
> "lowly" Technician, one of my teenager Technician friends won a
> KWM-380 at the Cedar Rapids hamfest. The old-timers were not amused. 
> I'd have preferred to win the radio, but barring that, seeing the 
> reaction of those old guys to a teenager Tech winning that KWM-380 was 
> pretty priceless. Of course, now I am one of those old guys...
>
> 73,
> Scott N9AA



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Re: [Elecraft] wall outlet for KPA1500

[James F. Boehner, MD via Elecraft]

Dave,

I hate to prolong this, but what was the solution?  Was the electrician 
mistaken, was the supplied plug incorrect or was it something else?

Everyone likes to hear the solution to a mystery! 

'73 de JIM N2ZZ


-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of David F. Reed
Sent: Thursday, August 5, 2021 10:53 PM
To: Robert Rennard 
Cc: Elecraft List 
Subject: Re: [Elecraft] wall outlet for KPA1500

You are correct, as have been all the others who gave the same information; it 
is solved now thanks to all!

Maybe we should close the topic…

73 de Dave, W5SV 

Sent from my iPhone

> On Aug 5, 2021, at 16:29, Robert Rennard  wrote:
> 
> 
> Dave –
> I think what you want is a NEMA 6-20R wall outlet.  See page 8 of the KPA1500 
> manual.
> Bob R
>  
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Re: [Elecraft] Plug on KPA-1500

[James F. Boehner, MD via Elecraft]

David, I was hoping someone from Elecraft would have stepped in to answer your 
question.

I assume you are in the USA.

My KPA-1500 came with a 6-20P 240V plug like here:  
https://shop.worldcordsets.com/shop/categories/NEMA-620P-Power-Cords .  Your 
picture did not come through, so if your plug is different, I would contact 
Elecraft.

I was not aware that Elecraft has ever meant the amplifier to be operated on 
120V, at least from what the specs say.  Elecraft would know if your amp was 
wired for 120V.

If your plug is similar to the ones on the link, I'm concerned why the 
electrician would have said that it was a 120V cord.  The 6-20P is definitely a 
240V (USA) plug.

If all else fails, ask him to install a 240V 6-20P outlet for you.  Again, do 
contact Elecraft if your plug is different from the link above.

'73 de JIM N2ZZ

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of David F. Reed
Sent: Thursday, August 5, 2021 11:48 AM
To: Elecraft List 
Subject: [Elecraft] Plug on KPA-1500

I am in a bit of a situation here… in trying to get a 240 V circuit wired for 
the shack to fit the plug coming from my KPA1500, the electrician tells me that 
it is a 120 V plug, and that is it against the law for him to wire a socket for 
that to 240 V.



Here is a photo of the power plug my KPA1500 came with:David F. Reed שָׁלום 
עֲלֵיכֶם - עֲלֵיכֶם שָׁלום



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Re: [Elecraft] Off-topic: Musical composition

[James F. Boehner, MD via Elecraft]

OK,  I resisted as long as I could...

Dan already gave the punchline for "What do you call someone who hangs out with 
musicians?" Yes, a drummer...

But before we leave the oboe, "What is the better double reed instrument, the 
oboe or the bassoon?" The bassoon of course-it burns longer!

Just some musings from the trumpet section- And everyone knows how WE are! 😊.

Wayne, I'm going to take you up on your offer.  A shout out to ALL musicians in 
the Elecraft family!

'73 de Jim N2ZZ



-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Dan Presley
Sent: Saturday, July 24, 2021 6:56 PM
To: Terry Schieler 
Cc: K2 
Subject: Re: [Elecraft] Off-topic: Musical composition

Don’t get started on drummer jokes…or trombone or accordion or banjo . 
Seriously off topic! I will share my favorite at the risk of starting a 
thread…what’s the difference between an oboe and a Volkswagen? If you have 
to,really really have to…you can tune a Volkswagen 🤪

Dan Presley 503-701-3871
danpresley@me. com 
n7...@arrl.net


> On Jul 24, 2021, at 14:04, Terry Schieler  wrote:
> 
> Dan's signature below is that of a musician.  Always your phone number after 
> your name.  Someone may need a bassist.
> Back in my "professional" music days, someone would ask one of my band 
> members... "how many in your band?".  Their response"four musicians and a 
> drummer".  Need I add which one was ME?
> 
> Terry  
> 
> -Original Message-
> From: Dan Presley [mailto:n7...@arrl.net] 
> Sent: Saturday, July 24, 2021 1:44 PM
> To: Wayne Burdick
> Cc: K2
> Subject: Re: [Elecraft] Off-topic: Musical composition
> 
> As a  ‘semi retired’ professional jazz musician (bassist-upright) I 
> particularly appreciated the analogy. During this last field day I was 
> running my KX3 and explaining to my logging assistants about pitch 
> matching.The spot control does a good job,but sometimes I needed to tweak it 
> to get in the other guys’ passband.  I can’t wait to use this on my 
> K4,whenever that might arrive! Maybe we should start an Elecraft band… last 
> year I was supposed to go to Spain and do some gigs and had planned to take 
> the KX2…maybe next summer. 
> 
> 
> Dan Presley 503-701-3871
> danpresley@me. com 
> n7...@arrl.net
> 
> 
>> On Jul 24, 2021, at 10:56, Wayne Burdick  wrote:
>> 
>> When the latest Elecraft newsletter came out, a few people contacted me to 
>> ask if I'm a musician. (You'll have to read the newsletter to understand the 
>> question.)
>> 
>> Short answer: Yes. If you'd like the long answer (and maybe a few sample 
>> compositions), feel free to contact me directly.
>> 
>> 73,
>> Wayne
>> N6KR
>> 
>> 
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> 
> 
> 

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[Elecraft] K4 interface to KPA-1500

[James F. Boehner, MD via Elecraft]

Is there information anywhere on how to interface the K4 to a KPA-1500 with
the use of a KPAK3AUX cable?  Is it straightforward as with the K3?

 

Is there a direct connection between the Tx sample connectors on the two
units?  Is there a setting in the K4 that must be made to use the Tx sample?

 

Thanks!

 

'73 de JIM N2ZZ

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[Elecraft] Hi Resolution Photograph of K4?

[James F. Boehner, MD via Elecraft]

 

Hello All,

 

I asked about a high-resolution picture of the Elecraft K4 some time ago and
was told that I should just save the picture on the website to my computer.

 

I have a high-resolution picture of the K3s and P3 that I use for wallpaper
at my Elecraft station.  It is available in the photo section of the
elecraft...@groups.io   list.  The direct link
is here:

 

 
elecraft...@groups.io | Photo

 

This file is 1.04 MB with image dimensions of 1920 x 1080 with horizontal
and vertical resolutions of 300 dpi

The k3s wallpaper file above has stunning resolution and quality.

 

The picture on the Elecraft  website (K4front-headon splitscreen)  is an 80
kb file with image dimensions of 1060 x 497, with horizontal and vertical
resolution of 72 dpi.

 

Is a higher resolution picture of the K4 available anywhere?  

 

TIA,

 

'73 de JIM N2ZZ

_._,_._,_

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[Elecraft] KPA-1500 power reading?

[James F. Boehner MD via Elecraft]

When I received my KPA-1500, I noticed I had to drive the LEDS into the
"red" zone to indicate 1500 Watts into my Bird 43 wattmeter with a 2500W
slug, and Palstar DL2K dummy load.

There also was a comprehensive part of the KPA-1500 manual that details how
to readjust the power indicating LED's, so I was wondering - what gives?

The Bird 43 specs have a tolerance of 5% of full scale, which for a 2500
watt slug is 125 watts.

I asked Wayne (or was it Eric?) at a show as to what was used by Elecraft to
calibrate the amp's power meter and was told they used the LP-100A.

So, that is the standard that was used in the Calibration of the KPA-1500's.

'73 de JIM N2ZZ



-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mark Goldberg
Sent: Sunday, February 07, 2021 12:38 PM
To: Jim McCook
Cc: Elecraft Reflector
Subject: Re: [Elecraft] KPA-1500 power reading?

The meter itself can be off too. Using more slugs does help things,
but to be really sure, test equipment needs to be periodically
calibrated, which Hams never do. Dummy loads should be measured with a
VNA. So, what you did is a big help, but still can't provide 100%
assurance that it is accurate. I understand that is the best most Hams
can do and probably better than most.

An LP-100A does come with a NIST traceable calibration from the
factory and it can be recalibrated, again something Hams never do. I
have one fancy scope / spectrum analyzer that I do get calibrated
yearly and I use that for a reference. I have a VNA with a set of
calibration standards and use that to measure attenuators / taps that
I put between my transmitter and the analyzer. I admit I do not
calibrate anything else, but I use the calibrated stuff as transfer
standards. I also have a couple GPSDOs as frequency standards to
compare to.

73,

Mark
W7MLG

On Sat, Feb 6, 2021 at 4:55 PM Jim McCook  wrote:
>
> Good points, Ray and Jim,  I should have been more detailed with what I
> posted. I checked The Bird 43 with two other Bird 2500w slugs from
> friends and they were all reading the same with a dummy load at 1500w.
> I did the KPA1500 calibration using the Bird with a high power dummy
> load, then checked again with my antennas in band segments where they
> present no significant reflected power and near 1:1 SWR.  At those
> points they were in sync.  Most of my antennas are flat on CW segments
> at specific spots without using the tuner in the KPA1500.  I operate 99%
> CW and realize that when the load changes from 50 ohms the Bird reads
> wildly high and cannot be trusted.  - Jim W6YA
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Re: [Elecraft] Difference between a K3 and a K3S

[James F. Boehner MD via Elecraft]

I had the unfortunate timing of ordering a K3 about 2 months before the K3s
came out.  My serial is 8964 and I have the new synthesizers which were
factory installed.  I believe the K3s started at serial number 10,000.

'73 de JIM N2ZZ

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of AB1DD
Sent: Monday, January 25, 2021 1:03 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Difference between a K3 and a K3S

I think it was, but have no idea what the starting S/N was. It was near 
the end of the K3 run.

73,
Carl
AB1DD

Resistance is futile.
(don't know about reactance, though)


On 1/25/2021 11:33 AM, Mike Kopacki wrote:
> Was the KSYN3A synthesizer ever built into the K3 as a standard item?  If
so, beginning at what serial number?
>
> Thanks,
> Mike NJ2OM
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Re: [Elecraft] Status of Add-ons for K3?

[James F. Boehner MD via Elecraft]

Now THAT sounds right!

'73 de Jim N2ZZ

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ken Widelitz
Sent: Sunday, September 20, 2020 2:44 PM
To: Fred Jensen
Cc: Elecraft Reflector
Subject: Re: [Elecraft] Status of Add-ons for K3?

I always thought the line was "Is it live or is it Memorex?"

On Sun, Sep 20, 2020 at 11:33 AM Fred Jensen  wrote:

> and some of us remember the arrival of the first TV station in town
>
> 73,
>
> Fred ["Skip"] K6DGW
> Sparks NV DM09dn
> Washoe County
>
> On 9/20/2020 10:11 AM, David Gilbert wrote:
> >
> > You're forgetting that you're talking to hams here ... almost all of
> > us are likely to be old enough to remember that commercial.
> >
> > 73,
> > Dave   AB7E
> >
> >
> >
> > On 9/20/2020 5:40 AM, Bob KD7YZ wrote:
> >> Magic or Memorex?
> >> (most of you are too young to remember the TV commercial)
>
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[Elecraft] Separate Elecraft K3 and K4 Reflectors on Groups.IO

[James F. Boehner MD via Elecraft]

To all,

This thread could go on forever.  Some want a separate group, some do not.

The fact is it is up to the individual as to whether they want to
participate in a separate group, the main group (this one) or both.

The good part is that when Wayne and/or Eric have a special announcement,
they do make an effort to post on the Groups.IO reflectors.  I believe they
monitor the separate groups (elecraft...@groups.io and elecraft...@groups.io
, but I do not have confirmation on that.

The bad part is if you just participate in the separate group, you may miss
something.  If you participate in the main group, there are voluminous
e-mails that do not deal with your radio that you have to go through and
delete.

I have moderated the Elecraft-K3 list for over 10 years, and just signed on
to moderate the Elecraft-K4 list.  They do serve a purpose, and all are
welcome to join.

The lists are there, and should you wish to participate, you are certainly
welcome to do so.  The traffic on those lists will not be as voluminous as
this reflector, so joining both shouldn't max out your e-mail box.

'73 de JIM N2ZZ

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Peter Eijlander
(PA0PJE)
Sent: Sunday, August 30, 2020 10:22 AM
To: John Bohnovic; elecraft@mailman.qth.net
Subject: [Elecraft] K4 info

>> I support having a separate K4 group.

I don't. I filter each Elecraft gear item in separate subfolders under a 
main folder called Elecraft.

The real problem with this is the shear lack of users of this list to 
mention the type of Elecraft gear they want to talk about.

Many users of the K3 for example, probably the most used  gear, think: 
"If I ask something about a setting of something everyone should know 
I'm talking about my K3", so they end up in the main folder and I have a 
hard time to get rid of these messages...

Messages from users of the digest that do not change the subject line:
Those messages are filtered straight to the trash... When I close 
Tunderbird the trash is emptied automaically.

If only we could stick to the RULE that one starts an item with the type 
of gear I would be very happy because the filter can take good care of this.

Please use the reflector and do not divert to yahoo/google/groups.io 
etc. Share information at one place, do not split it up.

73,
Peter - PA0PJE




Op 30-08-2020 om 14:53 schreef John Bohnovic:
> I can filter all of the Elecraft groups so that all of the messages from
> the different groups appear in one folder. I don't do that because I
> want them in separate folders.
> 
> I support having a separate K4 group.
> 
> 73..de John/K4WJ
> 
> On 8/29/2020 11:57 AM, Tom Azlin W7SUA wrote:
>> I like having all the Elecraft discussion on this reflector. I do not
>> consider any of it as tying up this one.
>>
>> Tom w7sua ( group 2 order for a K4, have the K-Line)
>>
>> On 8/26/2020 7:34 PM, Nr4c wrote:
>>> More likely this information will come from us as we announce the
>>> various stages of the delivery progress to the group on one of the
>>> reflectors, probably the K4 group so as not to tie up this one with a
>>> lot of traffic not of interest to the mass membership.
>>>
>>> Sent from my iPhone
>>> ...nr4c. bill
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Re: [Elecraft] Cable for K3 to Expert 1.3K-FA

[James F. Boehner MD via Elecraft]

Joe,

I don't know if you have received this information, but I have cables that I
ordered from Dan Tassell of Expert Linears: kc5p...@att.net .  He makes plug
and play cables for various rigs to interface with the Expert Linears.  He
does good work and stands behind his products.  More information is on their
website http://expertlinears.com/ .

'73 de JIM N2ZZ



-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Adrian
Sent: Friday, August 07, 2020 10:09 PM
To: 'Elecraft Reflector'
Cc: spe-amplifi...@groups.io; dx...@groups.io; elecraft...@groups.io
Subject: Re: [Elecraft] Cable for K3 to Expert 1.3K-FA

Joe, just a note on SPE amplifier interfacing, is that not all rigs are
supported for cat frequency read interfacing or even band switching.

This is essential for the SPE atu (if fitted and active), to set its tune
setting before first keyup on band preventing a possible swr alarm and
switch to strandby.
Without CAT freq read the ATU had then used SPE internal RF sense freq
counter  during that keyup, but not fast enough to prevent that initial
alarm, 
so the amp still needs to be switched back to 'Operate' to continue, so CAT
freq tracking is very convenient for the ATU to function before first keyup
on band.

I found DXLab Commander an excellent program in between SPE and transceiver
to solve these situations

For the Elecraft KX3 SPE with freq/band follow ;

https://youtu.be/k87_lkO4mmY

I also use it with my FTDX101MP to follow the SUB freq as well (does not
work direct connected), The FT991 profile in SPE, and secondary Commander
CAT
works fine with either the MP and KX3 as primary Commander CAT connection.
The amp has two inputs and 2 cat connections as you know. 
The Commander program is easily switched between the two, or a start profile
setup for each transceiver.

The CAT connection from SPE to PC has DB9 2&3 reversed or a nullmodem patch
cable inserted in series with usual rig cat cable for rs-232 setups.

Adrian Fewster

VK4TUX


> Anybody got a spare cable to run from K3 to Expert 1.3K-FA they would 
> like to part with?
> 73,
> Joe

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Re: [Elecraft] New antenna works!

[James F. Boehner MD via Elecraft]

Al,

A very refreshing perspective.  Thank you!

'73 de JIM N2ZZ

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Al Lorona
Sent: Saturday, August 01, 2020 2:22 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] New antenna works!

I'm glad Dave added that to the end of his message, because each time the topic 
of multiband antennas comes up, we are told, "That's too lofty a goal for one 
antenna. Just put up a resonant antenna and all your troubles will be gone." 
All except for the problem of operating on all bands without having to put up 9 
resonant HF antennas, that is. I think we do a disservice to the hundreds of 
hams reading this by discouraging them from multiband operation just because we 
deem it too "noisy" or "lossy" or "inconvenient" or whatever.

If a man or woman, knowing full well the consequences of his or her actions, 
chooses to utilize a single, horizontal antenna of no particular length, 
ultra-low-loss feedline long enough to reach the shack, and a low-loss homebrew 
or commercial manual antenna tuner to operate on all bands, then who are we to 
tell him or her that they shouldn't? To do so has always struck me as 
presumptuous.

Incidentally, can we do two things? Can we all get over the gross assumption 
that we continue to make, that when someone mentions feeding an antenna with 
"balanced line" that must mean Wireman #553? There are better alternatives. If 
our beef is with Wireman #553, then let's be on with it without condemning 
*all* forms of balanced line.

Secondly, antenna tuners are not necessarily lossier than the aggregate of 
cables, connectors, wattmeters, filters, switches, elbows, lightning arrestors, 
baluns, autotuners, &c., &c., that many folks use. Everything has loss, but in 
effect we trade that loss for some other valuable function... like being able 
to QSY anwhere, easily. To give you a data point, on 12 meters my station has a 
max loss (from transmitter to the antenna feedpoint) of 1.6 dB. I'll put that 
worst-case number up against anybody's long run of coax through all the other 
junk from their transmitter to their antenna.

Folks, you should not feel inferior for having chosen to operate on many bands 
with an antenna tuner. I think the case could be made that the *resonant* 
antenna is the compromise, giving up all band operation for some other desired 
function. And sadly, sometimes that compromise is made just so they can say 
that they're not using a tuner!

Al  W6LX


>>>Multi-band antennas are fine as long as you recognize that they are a 
>>>compromise.
>>>Dave   AB7E

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[Elecraft] K4??? - OT

[James F. Boehner MD via Elecraft]

https://www.flowbee.com/ 

I can't believe that is still around!

'73 de JIM N2ZZ

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Brown
Sent: Saturday, May 16, 2020 1:26 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K4???

On 5/15/2020 7:48 PM, Drew AF2Z wrote:
> I cut my own hair-- it is passable at "social distancing" distances. 
> Whatever it looks like it feels a lot better nice and short.

I get my hair cut a couple of times a year, whether it needs it or not. 
My most recent was a month or two before going into lockdown. I'll let 
my wife grab a bowl and do it when it gets too long. Better than COVID-19.

73, Jim K9YC


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[Elecraft] K4 Internal and External display resolution-connector

[James F. Boehner MD via Elecraft]

I have a question as to the video output connector.

The K4 appears to have an HDMI connector for the monitor output. 

I have been told by other manufacturers that using an HDMI connector
involves royalty fees or some other licensing.

Is this true?  If so, how has Elecraft navigated this situation?

'73 de JIM N2ZZ



-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Eric Swartz - WA6HHQ,
Elecraft
Sent: Thursday, January 02, 2020 7:23 PM
To: Dave Erickson; Elecraft@mailman.qth.net
Subject: Re: [Elecraft] K4 Internal and External display resolution

Hi Dave,

The K4's internal LCD has a resolution 1024x600, which is very sharp.

We also demonstrate the K4 with a large external 1920x1080 HDMI compatible 
monitor. Our h/w should support up to 4K external monitors.

Note that rather than just mirroring the internal color LCD of the K4 on the

external monitor, we can display data independently from the LCD at the same

time in whatever format we wish, such as the full screen spectrum and
waterfall 
display we've been showing at the shows at 1920x1080.

73,
Eric
/elecraft.com/
-

On 1/1/2020 11:46 AM, Dave Erickson wrote:
> ...
> On a more serious note, has it been revealed yet what resolution the built
in 
> display will have? I am in the market and all the other radios in this
class 
> seem to have quite low pixel densities. And most of those have the display

> outputs at the same very low resolutions.
>
> Happy New Year to all.
>

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[Elecraft] Wayne and his company...

[James F. Boehner MD via Elecraft]

Ahhh, what is the quote from Mark Twain?

"Find a job you enjoy doing, and you will never have to work a day in your
life."

Thanks to Eric, Wayne, and all of the good people at Elecraft!

'73 de JIM N2ZZ


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dean L
Sent: Saturday, December 14, 2019 10:59 PM
To: Elecraft Mail List
Subject: [Elecraft] Wayne and his company...

>>>snipped
hand in his case, I suspect he doesn't sleep. With his having to do what
he does for Elecraft, I wonder how he has the time to play with the
toys, test out his developments, etc. However, I am really glad there is
someone in the company like him.<<<


I often wonder how this man does all his duties, (including answering
emails) and have any time for sleep, family, non ham stuff A true
legend.
73
Dean K2WW
Show quoted text
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[Elecraft] Elecraft limited ed Hex key

[James F. Boehner MD via Elecraft]

I wanted to thank Petr, as I did win the auction and received the Elecraft
Hex Key mentioned below.

Does anyone have any history on this key?  What were the years it was
available and did Elecraft or Bencher sell/market the key?

What was the story behind Elecraft's licensing of its name, reasons for
discontinuing the product, etc.?

I have performed searches and saw EHam reviews, but I did not much
information other than that.  

Perhaps Eric or Wayne have some information to share.

All I can say is that it is one sweet key!

'73 de JIM N2ZZ

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Petr, OK1RP/M0SIS
Sent: Wednesday, September 18, 2019 9:41 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Elecraft limited ed Hex key

Hi folks,

just want to let you know that on eBay is for sale the Bencher Hex key in
limited Elecraft edition.
https://www.ebay.com/itm/Elecraft-Bencher-CW-Key-Paddle-for-Elecraft-K-2-or-
K-3/133172860483?hash=item1f01b89643:g:E-UAAOSwEDFdfnYe

..looks new, no scratches, dents etc. 
I am not the seller and I am not affiliated to him but if you want it into
your Elecraft collection then there is not so mni of them on market for
sale...





-
73 - Petr, OK1RP 
"Apple & Elecraft freak"
B:http://ok1rp.blogspot.com
MeWe: https://bit.ly/2HGPoDx
MeWe: https://bit.ly/2FmwvDt
--
Sent from: http://elecraft.365791.n2.nabble.com/
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[Elecraft] High Resolution K4 JPG/TIF?

[James F. Boehner MD via Elecraft]

Is there a high resolution JPEG/TIF of the Elecraft K4 available yet?

'73 de JIM N2ZZ



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[Elecraft] Will there be a K4

[James F. Boehner MD via Elecraft]

Hmm..

This is amazingly a very similar question once asked as to what we would like 
to see in a legal limit Elecraft amplifier

And then suddenly, there was a KPA-1500!

We'll all stay tuned!

'73 de JIM N2ZZ

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Eric Swartz WA6HHQ - 
Elecraft
Sent: Sunday, March 24, 2019 8:15 PM
To: Elecraft list
Subject: Re: [Elecraft] Will there be a K4

Inquiring minds want to know: 
What would you all like to see as a “K4” ? 

Eric
elecraft.com

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[Elecraft] Remote Operating-OT

[James F. Boehner MD via Elecraft]

This topic has already been closed, but let me make a suggestion.

If you have strong feelings about remote operation and you are an ARRL
member, contact your ARRL Director, as they set policy for the ARRL.

Their phone numbers and e-mail addresses are on page 15 of this month's QST.
Find your Division, and contact your Elected Director.  They need their
member's viewpoints in order to properly represent their Division.

'73 de Jim N2ZZ

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[Elecraft] Who's your favorite Elecraft Elmer?

[James F. Boehner MD via Elecraft]

I wholeheartedly agree!

Don has helped so many with his vast knowledge and patience.

I have seen him at many Hamfests teaching the masses about Elecraft products.

His comments and answers to questions on this list go unmatched anywhere.

Those who have sent radios in to him to repair over the ages know his 
commitment to Elecraft and Amateur Radio in general.

I would like to add my support to Don as my favorite Elecraft Elmer!

'73 de JIM N2ZZ

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bill
Sent: Tuesday, March 12, 2019 2:23 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Who's your favorite Elecraft Elmer?

Don Wilhelm -  I enjoy his  down to earth advice that doesn't require 
more than a tenth grade education to understand. Note, however, there 
are many others well worth listening to also.

I belong to a couple of groups (for other equipment and OS) and I can 
assure everyone - the Elecraft reflector is unique. Ask a question and 
you will get an answer - without snide responses.




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[Elecraft] Coax Switches

[James F. Boehner MD via Elecraft]

I  use the Alpha Delta Series.  They have SO-239 and "N" connector models, two 
position or four position.  For the price difference, I always get four 
position.

They are not only well built switches, but they do have surge protection (gas) 
with a replaceable pill.  Their best feature is the very high isolation they 
offer:

30 MHz  >60 dB
150 MHz >50 dB
450 MHz 50 dB 

And dB Loss:

30 MHz  0.1 dB
150 MHz 0.15 dB
450 MHz 0.5 dB

So, I wish these could be remotable.  However, they are the best switches I've 
found for a reasonable price, and I have many of them in my station.

Oh yes, on the outside of my house, I have polyphasers.

'73 de JIM N2ZZ



I do use a number of Daiwa 2-position coax switches for various 
purposes. Any comments on coax switches?

Bill W2BLC K-Line




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[Elecraft] Breakers for KPA1500?

[James F. Boehner MD via Elecraft]

WOW!

Thanks for that link!  Now just to find it in PDF.

'73 de JIM N2ZZ


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mark Goldberg
Sent: Monday, July 09, 2018 8:27 PM
To: hawley, charles j jr
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Breakers for KPA1500?

Actually, if you look at the NEC (National Electrical Code), they have
factors for ambient temp and wire temp ratings. Other codes around the
world are similar.

For example, if you use AWG 12 Type UF cable, the base rating is 20 Amps.
With the temperatures we have in Arizona, where it can get above 140F in an
attic, they have a correction factor of 0.71 if the wire is rated to 90C.
So it should only be used up to 14.2 Amps. If you are installing from
scratch, I would go to AWG 10 just for a safety factor. Of course, you may
not be here in Arizona. It actually may get hotter than that here in some
attics.

You can read the NEC for free by going here and signing up. It will tell
you more than you want to know, in excruciating detail. A copy will cost
ya, but I have found the online interface good enough to find things.

https://www.nfpa.org/codes-and-standards/all-codes-and-standards/list-of-cod
es-and-standards/detail?code=70

73,

Mark
W7MLG


On Mon, Jul 9, 2018 at 4:49 PM, hawley, charles j jr 
wrote:

> How many watts of heat does the average attic have in the summertime?
>
> Chuck
> KE9UW
>
> Sent from my iPhone, cjack
>
> > On Jul 9, 2018, at 6:39 PM, Josh Fiden  wrote:
> >
> > If wire run ends up being 50' you could see a 2V drop at 13A. Agree that
> switching supply in amp won't care. 26W of heat in the wire inside a wall
> would bug me.
> >
> > 73
> > Josh W6XU
> >
> > Sent from my mobile device
> >
> >> On Jul 9, 2018, at 3:12 PM, Roy Koeppe  wrote:
> >>
> >> The KPA1500 uses a regulated power supply: input 195 to 250 vac.
> Voltage loss in #12  wires is so small the regulator will laugh at that.
> >>
> >> 73,   Roy   K6XK
> >>
> >>
> >> "I would also suggest using three -  #10 with ground as the line from
> the
> >> breakers to the amp operating position."
> >>
> >> 73
> >>
> >> Bob, K4TAX
> >>
> >>
> >>> On 7/9/2018 11:43 AM, Roy Koeppe wrote:
> >>> Yes, that is what I am using.
> >>>
> >>> 73,   Roy K6XK
> >>>
> >>>
> >>> I probably missed this but my google searches aren't working either.
> >>>
> >>> Will 2x 20A breakers (220v) be sufficient for the KPA1500?
> >>>
> >>>
> >>
> >>
> >> __
> >> Elecraft mailing list
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> >
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[Elecraft] 12V Plug on K3/0 Mini

[James F. Boehner MD via Elecraft]

Mitch,

I believe it is the following Tip Size:

5.5mm O.D./2.1 mm I.D.

If you have any of the Radio Shack plugs in your junque box, it was their
size "M".

'73 de JIM N2ZZ

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mitch Wolfson DJ0QN /
K7DX
Sent: Wednesday, July 04, 2018 4:49 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] 12V Plug on K3/0 Mini

I just bought a used K3/0 mini which hasn't arrived yet. Unfortunately, 
the owner no longer has the 12v cable for it.

Could someone please let me know the type of plug (mm) on the 12v cable? 
I can't find this is the remote manual, but I know it is thicker than 
the one for the RRC. I will go by a store and buy one before the mini 
arrives.

Thanks & 73,
Mitch DJ0QN

-- 
Mitch Wolfson  K7DX / DJ0QN
10285 Boca Cir, Naples, FL 34109
Skype: mitchwo
USA: Home:+1-239-221-9600 - Mobile:+1-424-288-9171
Germany: Home:+49 89 32152700 - Mobile:+49 172 8374436

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Re: [Elecraft] OT (sort of, but they use all Elecraft gear): Baker Island

[James F. Boehner MD via Elecraft]

Try:

http://baker2018.net/index.html 

’73 de JIM N2ZZ

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of ab2tc
Sent: Friday, June 29, 2018 1:17 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] OT (sort of, but they use all Elecraft gear): Baker 
Island

Hi Eric and all,

The kh7z.net link doesn't work for me. It seems to reach the site, but then
times out trying to connect. Anyway, the message you quoted is also present
on the Facebook site. I don't like Facebook but unfortunately that seems to
be the choice of current DXpeditions.

AB2TC - Knut


Eric Swartz - WA6HHQ, Elecraft wrote
> Also look at: http://kh7z.net/
> This appears to have the most real time official info.
> 
> They are running all K3S transceivers and KPA500's on all HF bands except
> 160, 
> where they are running a KPA1500.
> 
>  From kh7z.net :
> 
> A Rough Night -> Standby for Uploads – Weather: 1, Operation: 0
> June 28, 2018
> 
> We did get 3 stations up and running last night,  one day ahead of
> schedule.
> 
> They say it never rains on Baker.  At midnight giant squalls came through 
> knocking out one of our 3 antennas that we worked so hard to get up. We
> worked 
> through the morning and have 6 stations available for the scheduled
> startup 
> tonight at 05:00 UTC.
> 
> Tomorrow before it gets too hot we will erect 2 more antennas making 8
> stations 
> available as the bands allow.
> The team is exhausted but excited about settling in and making QSOs around
> the 
> globe. We are experiencing minor IT problems, and as such have not
> uploaded to 
> ClubLog. We do plan on making our initial upload via BGAN satellite soon, 
> however at this time, we do not have an exact time.
> 
> Don N1DG Kevin K6TD. Tom N4XP for the Dateline DX Association
> ==
> 
> 
> 73,
> Eric
> /elecraft.com/
> 





--
Sent from: http://elecraft.365791.n2.nabble.com/
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[Elecraft] KPA-1500 Fan Noise

[James F. Boehner MD via Elecraft]

I would ask someone from Elecraft to respond to the VGA extension cable
question.  It seems everywhere I read within Elecraft Documentation is that
standard VGA cables should NOT be used.  In regards to extensions, I do not
know if they all work pin to pin, or that they are meant to just extend
standard VGA cables.

It certainly would be a way to extend the distance between the K3/K3S and
the KPA1500, but still retain the functionality between the two.  When the
new firmware comes out, and the amp can be controlled by the function
buttons on the K3 (PF1-operate/stby and PF2-antenna switch), it would be a
sure winner.

'73 de JIM N2ZZ


[Since the cable pin out is straight thru I would imagine a DB15 VGA M-F
extension cable would suffice?]

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Les Peters
Sent: Saturday, June 02, 2018 12:08 PM
To: elecraft@mailman.qth.net; elecraft-requ...@mailman.qth.net
Subject: Re: [Elecraft] KPA-1500 Fan Noise

Jim I agree with your personal observations.  I run some high duty cycle
modes so I notice the fans kicking into speed 3 a lot when the PA temp gets
to 68-70 degrees.  That setting does a good job of reducing the temp and
keeping it from climbing past 73 degrees.  I've changed my min fan speed
threshold from 0 to 1 to also help.  As you have pointed out 1 is barely
perceptible and this helps to reduce the amount of time that fan speeds are
on 2+.


I'd like to have more separation between the K3S and the KPA1500 RF deck to
further distance any noise but the KPAK3AUX cable is only about five feet
long, it would be great if that were more like ten feet.  Since the cable
pin out is straight thru I would imagine a DB15 VGA M-F extension cable
would suffice?  That would put the potential fan noise even further away but
have the RF deck still plenty close enough to view.


Les, N1SV

#113

> Date: Fri, 1 Jun 2018 23:07:20 -0400
> From: "James F. Boehner MD"
> To: "'Elecraft Reflector'"
> Subject: [Elecraft] KPA-1500 Fan Noise
> Message-ID: <002901d3fa1e$d39e0db0$7ada2910$@yahoo.com
mailto:002901d3fa1e$d39e0db0$7ada2910$@yahoo.com >
> Content-Type: text/plain; charset="utf-8"
> 
> Just thought I would add a few thoughts as far as the fan noise.
> 
> I'm not certain a YouTube piece would help, but perhaps personal
observations might.
> 
> First, via the menu, you can select the minimum fan speed, 0-5. Of
course, the fan speed will go up with the Amp temperature.
> 
> These are my personal observations:
> 
> 0-Nothing
> 1-Barely perceptible
> 2-Acceptable fan noise, even for SSB operating. Low pitched whine
> 3-The noise and the pitch of the whine is past the acceptable point.
Even a very directional mic will probably pick up the noise. This is where
Noise Cancelling headphones would start to help.
> 4-Louder and higher pitched whine
> 5-Very loud and higher pitched whine
> 
> So, the fan noise becomes particularly bothersome on level 3 and
above. If you are doing CW and/or Digital, the noise will only be a factor
with the operator. On SSB, the noise will probably be noticeable on the air.
However, the SSB duty cycle may not require higher fan speeds. Those who
have been active in contests will probably know that answer.
> 
> Rich, if fan noise is going to be that strong a factor, perhaps you
should be looking at tube amps instead. Personally, if I found the KPA-1500
fan noise excessive in the future, I would plan on moving it off my desk or
remoting it rather than replacing it. It's integration with the K3 would be
very hard to give up.
> 
> 
> ?73 de JIM N2ZZ
> #106
> **
> 
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[Elecraft] KPA-1500 Fan Noise

[James F. Boehner MD via Elecraft]

Just thought I would add a few thoughts as far as the fan noise.

I'm not certain a YouTube piece would help, but perhaps personal observations 
might.

First, via the menu, you can select the minimum fan speed, 0-5.  Of course, the 
fan speed will go up with the Amp temperature.

These are my personal observations:

0-Nothing
1-Barely perceptible
2-Acceptable fan noise, even for SSB operating.  Low pitched whine
3-The noise and the pitch of the whine is past the acceptable point.  Even a 
very directional mic will probably pick up the noise.  This is where Noise 
Cancelling headphones would start to help.
4-Louder and higher pitched whine
5-Very loud and higher pitched whine

So, the fan noise becomes particularly bothersome on level 3 and above.  If you 
are doing CW and/or Digital, the noise will only be a factor with the operator. 
 On SSB, the noise will probably be noticeable on the air.  However, the SSB 
duty cycle may not require higher fan speeds.  Those who have been active in 
contests will probably know that answer.

Rich, if fan noise is going to be that strong a factor, perhaps you should be 
looking at tube amps instead.  Personally, if I found the KPA-1500 fan noise 
excessive in the future, I would plan on moving it off my desk or remoting it 
rather than replacing it.  It's integration with the K3 would be very hard to 
give up.


’73 de JIM N2ZZ
#106

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dr. William J. Schmidt
Sent: Friday, June 01, 2018 8:59 PM
To: 'Elecraft Reflector'
Subject: Re: [Elecraft] KPA-1500 Fan Noise - YouTube ?

So just a bit of thermodynamics... if the input to any amplifier is 1500 watts 
and it is 50% efficient, since energy is conserved, 750 watts will come out in 
another form.. and in this case it's heat.  Doesn't matter what the converter 
is (transistor, tube, resistor, etc.).  It all behaves the same.  Need to get 
rid of 750 watts of heat.  The only difference may be the way the heat is taken 
away of the converter... convection (heat sink), forced convection (heat skin 
plus fan), liquid convection (water cooled heat sink).  The poison is the heat 
removal device not the converter.


Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ 

Owner - Operator
Big Signal Ranch – K9ZC
Staunton, Illinois

Owner – Operator
Villa Grand Piton – J68HZ
Soufriere, St. Lucia W.I.
Rent it: www.VillaGrandPiton.com
Like us on Facebook! 

Moderator – North American QRO Group at Groups.IO.

email:  b...@wjschmidt.com



-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bill Stravinsky via 
Elecraft
Sent: Friday, June 1, 2018 7:33 PM
To: Elecraft Reflector 
Subject: Re: [Elecraft] KPA-1500 Fan Noise - YouTube ?

 Rich

You pretty much hit the nail on the head about solid state amps.  As they say 
there's no free lunch.  Solid state has made great strides in high power 
ampsbut its still solid state and a p/n junction or some form thereof.  1500 
watts of heat in those junctions has to be cooled down or it won't be long 
before it needsnew parts.
Depending on your operating habits (contesting, casual, or whatever) there will 
be varying degrees of fan noise.  The higher the duty cycle the higher thefan 
requirements.  Pick your poison, a small light weight amp easy to move around 
or one you need a fork lift to pick up.  I prefer tube amps for a few 
reasonsand have the Acom 2000a (and an Alpha 89 that now sits in the living 
room temporarily) but I'm still glad I got the kpa1500 at least so far.
The kpa sits nicely on top of the Acom without causing the table they sit on to 
crash to the floor in pieces, hi.  I'm surprised nobody has made a you tube 
ofthe amp in operation actually.  But there are only just over 200 of the new 
amps out there.  Good luck with your investigation, Rich.
BillK3WJV

On Friday, June 1, 2018, 8:00:29 PM EDT, Richard Thorne 
 wrote:  
 
 This fan noise issue has me concerned to the point that I’m considering 
cancelling my order.

While the amp won’t be on my operating desk, it will be on a rack next to my 
operating desk.  Remoting the amp is not an option. Quite frankly I have no 
interest in remoting the amp.

Is there anyone out there that has a KPA-1500 willing to post a YouTube video 
so we can hear the fan in action and judge the noise for ourselves?

From the research I’ve done it appears that if you want a solid state amp, 
regardless of make, you need to be prepared for fan noise.

Thanks

Rich - N5ZC

Sent from my iPhone
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delivered to k3..

[Elecraft] KPA-1500 question

[James F. Boehner MD via Elecraft]

If you put down a deposit when you ordered  (Full price/$3000/$1000), your card 
was charged with that deposit when you placed the order.  Prior to shipment, 
Elecraft will charge the Balance to your card to total the amplifier's cost, 
$5995.  Those that put down full price as a deposit had free shipping (cost 
approximately $95 for me).

I don't think the new orders have the same process, but as far as I know, the 
introductory price still applies.  I would assume they will charge for new 
orders just prior to shipment.   I hope someone from Elecraft will post and 
give the actual process for new orders, as I do not know that for a fact.

’73 de JIM N2ZZ

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ronnie Hull
Sent: Friday, May 11, 2018 6:29 PM
Cc: elecraft@mailman.qth.net
Subject: [Elecraft] KPA-1500 question

If you order a KPA-1500 when is your CC charged? When it’s ready to ship or 
when you place your order?

Ronnie

Sent from my Smarter than me Phone
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[Elecraft] Factory Power Calibration of the KPA-1500 - question

[James F. Boehner MD via Elecraft]

This may have been discussed already, but just wanted to confirm.

I had a number of questions, but I'll condense them into a few:  

How are the KPA-1500 power LEDs/display calibrated at the factory, and what 
equipment is used to do the calibration?

Second, in the case of using the amp with K3 and the KPAK3AUX cable, is there a 
point where ALC kicks in and decreases power output?

Thank you!

’73 de JIM N2ZZ


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[Elecraft] KPA 1500 #106

[James F. Boehner MD via Elecraft]

Someone mentioned that new KPA 1500 owners were not posting to the list.

KPA-1500 Serial 106 was received today, installed and on the air!  Purchased
25-Aug-2017 12:54:30 PDT by phone.

Yes, it is as awesome as we have been told.  Thank you, Elecraft!

One question-the status of the KPA 1500 is listed on the K3 screen as KPA
500.  Is there a way to change that now, or will that be in another K3
firmware release?

'73 de JIM N2ZZ


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[Elecraft] KPA500 power supply

[James F. Boehner MD via Elecraft]

Absolutely no regrets.  The Amp works just fine on 115 V service without so
much as a dimming light on the same circuit.

'73 de JIM N2ZZ


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dennis Haarsager
Sent: Thursday, March 29, 2018 2:18 AM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] KPA500 power supply

I am ready to order a KPA500 and wonder if anyone out there has regretted
operating one from 115-volt service. 

Thanks and 73,
Dennis, at the moment CT9/N7DH

Sent from my iPhone
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[Elecraft] Resistor and capacitor installation techniques: trim before or after soldering?

[James F. Boehner MD via Elecraft]

Tony,

Thanks for the very detailed explanation.  I know we are stressing the
moderators with these somewhat OT postings, but I have learned something
today.

Your note about lead in solder is very apropos.  I know that NASA is not
wanting to have solder "whiskers" in any of their critical space equipment:

https://nepp.nasa.gov/Whisker/background/index.htm 

I usually hunt down tin/lead solder at Hamfests.  When I'm asked why I'm
risking lead exposure when soldering, I quote a line from one of our former
Presidents:  "I don't inhale"!

Thanks for the great discussion!

'73 de JIM N2ZZ

-Original Message-
From: N2TK, Tony [mailto:tony@verizon.net] 
Sent: Sunday, March 25, 2018 12:58 PM
To: 'Doug Renwick'; 'James F. Boehner MD'; 'JEROME SODUS';
Elecraft@mailman.qth.net
Subject: RE: [Elecraft] Resistor and capacitor installation techniques: trim
before or after soldering?

Hi Jim,
Doug is correct about military and space work. All parts are precut or have
spacers installed prior to board mounting. Between flux, solder/flux and
mechanical means the parts are held in place until the reflow oven. For some
programs, boards are not allowed to be reworked. Some programs allow rework.
There is a very detailed procedure for reworking a board - MIL-PRF-38535 and
MIL-STD-883.

But, our applications and most commercial applications do not see the
stress, temperature range or vibration that some of these mil and space
boards see. So, for most of us bending the leads to hold the part, solder
and cut is fine. You can re-solder after cutting to be sure.  

Years ago at a NASA meeting, they were told you do not need a tool meeting
MIL-STD and MIL-PRF to make a board that meets those specs. So, have the
right solder and right temp on the soldering tool and the right tip and make
a nice flowing shiny solder connection. 
By the way, military space solder is not RoHS compliant. There will be lead
in the solder.

73,
N2TK, Tony

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Doug Renwick
Sent: Sunday, March 25, 2018 12:05 PM
To: 'James F. Boehner MD' ; 'JEROME SODUS'
; Elecraft@mailman.qth.net
Subject: Re: [Elecraft] Resistor and capacitor installation techniques: trim
before or after soldering?

Heathkit recommended the "bad practice" saying "solder the leads to the foil
and cut off the excess lead lengths". Reprimanding a technician for doing
this is insane.
Doug

"Political correctness is a weapon used to silence people who tell the
truth" - Ayaan Hirsi Ali 

-Original Message-----
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of James F. Boehner MD
via Elecraft
Sent: March-25-18 9:33 AM
To: 'JEROME SODUS'; elecraft@mailman.qth.net
Subject: [Elecraft] Resistor and capacitor installation techniques:
trimbefore or after soldering?

Jerome,

Now this is interesting.  This is totally opposite of the way most of us
were taught to solder.  Among the kits I used to put together were Heathkit
and Ramsey, both of whom recommended securing the parts in place by
spreading the leads, soldering, and then cutting the wires close to the
solder blob, checking for shorts.  I assume that goes for Elecraft also, but
I have not built any of their radios as kits, so not sure.

So how did NASA handle the potential difficulties?  Did they have precut
parts?  Did the tech have to place the part in the board and cut the leads
first?  If the part was loose, how was it held close to the board, owing to
the fact that holding the solder and the iron took two hands?  What if the
lead length was overestimated and potentially could cause a short?  Could
the wire be cut and the joint reheated, or did the part have to be removed,
recut and reinserted?

Just trying to picture the operation.

'73 de JIM N2ZZ

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of JEROME SODUS
Sent: Saturday, March 24, 2018 11:40 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Resistor and capacitor installation techniques: trim
before or after soldering?

About Message#15 copied below

Sorry but cutting wires after soldering is "bad practice"; NASA wanted the
soldered connection left undisturbed.

If I ever saw an assembler or tech doing that "bad practice", they'd get a
verbal warning that first time and a written warning if it ever happened
again; but I had good, conscientious people and never had to do that.

So, tin the wires if needed; position the part and then trim wires before
doing the final soldering.

73 Jerry KM3K



Message: 15
Date: Sat, 24 Mar 2018 19:39:47 +
From: Bill Johnson 
To: "ksto...@ac0h.net" , 'Mark Petrovic'
, "Elecraft@mailman.qth.net"

Subject: Re

[Elecraft] Resistor and capacitor installation techniques: trim before or after soldering?

[James F. Boehner MD via Elecraft]

Jerome,

Now this is interesting.  This is totally opposite of the way most of us
were taught to solder.  Among the kits I used to put together were Heathkit
and Ramsey, both of whom recommended securing the parts in place by
spreading the leads, soldering, and then cutting the wires close to the
solder blob, checking for shorts.  I assume that goes for Elecraft also, but
I have not built any of their radios as kits, so not sure.

So how did NASA handle the potential difficulties?  Did they have precut
parts?  Did the tech have to place the part in the board and cut the leads
first?  If the part was loose, how was it held close to the board, owing to
the fact that holding the solder and the iron took two hands?  What if the
lead length was overestimated and potentially could cause a short?  Could
the wire be cut and the joint reheated, or did the part have to be removed,
recut and reinserted?

Just trying to picture the operation.

'73 de JIM N2ZZ

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of JEROME SODUS
Sent: Saturday, March 24, 2018 11:40 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Resistor and capacitor installation techniques: trim
before or after soldering?

About Message#15 copied below

Sorry but cutting wires after soldering is "bad practice"; NASA wanted the
soldered connection left undisturbed.

If I ever saw an assembler or tech doing that "bad practice", they'd get a
verbal warning that first time and a written warning if it ever happened
again; but I had good, conscientious people and never had to do that.

So, tin the wires if needed; position the part and then trim wires before
doing the final soldering.

73 Jerry KM3K



Message: 15
Date: Sat, 24 Mar 2018 19:39:47 +
From: Bill Johnson 
To: "ksto...@ac0h.net" , 'Mark Petrovic'
, "Elecraft@mailman.qth.net"

Subject: Re: [Elecraft] Resistor and capacitor installation
techniques: trim before or after soldering?
Message-ID:


Content-Type: text/plain; charset="us-ascii"

Follow the instructions and solder as directed. There are components on both
sides as I recall with the majority on the top. The leads need be spread to
hold the components in place on the board. Once done soldering use a flush
cut wirecutter to remove the excess. Not a good idea to trim them before
soldering.

72 & 73,
Bill
K9YEQ
FT'er for K2, KX1, KX3, KXPA100, KAT500, W2, etc.
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Re: [Elecraft] AUX port gender on KPA1500 different than KPA500

[James F. Boehner MD via Elecraft]

The FCC OET External Pictures here: 

https://apps.fcc.gov/oetcf/eas/reports/ViewExhibitReport.cfm?mode=Exhibits&R
equestTimeout=500&calledFromFrame=N&application_id=ihVuEIeRW6zTYKpm1zmQDA==&
fcc_id=UTR-KPA1500 

External Photos show a male AUX connector.

Hopefully that is what the production model will have.

'73 de JIM N2ZZ


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dan AE9K
Sent: Saturday, December 02, 2017 11:26 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] AUX port gender on KPA1500 different than KPA500

The picture of back of the RF deck on the KPA1500 FAQ shows a female DE-15
for the AUX port.  The KPA500 has a male DE-15 AUX port.  Is the port in the
picture correct or just a pre-production mock-up with the wrong gender?  

I ask because I'm inserting a switch box and am making the associated cables
to be able to flip back and forth between the two amps (when the KPA1500
arrives).

Dan
AE9K




--
Sent from: http://elecraft.365791.n2.nabble.com/
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[Elecraft] 630 meter band open for use

[James F. Boehner MD via Elecraft]

Well,

This is getting off topic for this reflector, but information is that there
have been experimental (amateur radio) stations on the (new) bands for some
time, with higher power limits than have currently been authorized for
general amateur radio use going forward.  There have been no interference
reports.

The ARRL was very conservative suggesting a 1 Kilometer standard for
separation between an amateur radio station and transmission lines carrying
PLC data in regards to non-interference.  The truth is, shorter distances
would still likely not produce interference.  The FCC did adopt the 1
kilometer distance as a standard, however.

'73 de JIM N2ZZ


Aha! So PLC and amateur radio DO interfere with each other after all.


In the end, amateur radio operators have been vindicated on this point.

Al  W6LX



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[Elecraft] 630 meter band open for use

[James F. Boehner MD via Elecraft]

Broken link.  Try this one:




'73 de JIM N2ZZ
Elecraft_K3 Listowner


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Merv Schweigert via
Elecraft
Sent: Friday, September 15, 2017 1:41 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] 630 meter band open for use

Since we finally have the 630 meter band open for amateur use, (after you
file intent of operation with the UTC and wait 30 days),

is there any plan to put this band on the K3/K3S band plan?
Would sure be nice to be able to get to 630 with out going through the
settings to enable/disable etc.
Or publish a macro that could be used with PF1 or PF2 to engage the band
quickly.

73 Merv K9FD/KH6




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..
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[Elecraft] 630 meter band open for use

[James F. Boehner MD via Elecraft]

Since the availability of the 630 meter band was mentioned,  I wanted to
pass along the link for amateurs to inform the UTC of intent to operate on
the new  2200 meter and 630 meter bands.

Recommendation is that EVERYONE submits this form ASAP, even if you don't
immediately intend to operate on the new frequency bands:

http://transition.fcc.gov/Daily_Releases/Daily_Business/2017/db0915/DA-17-89
3A1.pdf  has an imbedded link to the UTC's online form.  I just did mine and
got a confirmation that my submission was accepted.


'73 de JIM N2ZZ
Elecraft_K3 Listowner


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Merv Schweigert via
Elecraft
Sent: Friday, September 15, 2017 1:41 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] 630 meter band open for use

Since we finally have the 630 meter band open for amateur use, (after you
file intent of operation with the UTC and wait 30 days),

is there any plan to put this band on the K3/K3S band plan?
Would sure be nice to be able to get to 630 with out going through the
settings to enable/disable etc.
Or publish a macro that could be used with PF1 or PF2 to engage the band
quickly.

73 Merv K9FD/KH6




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Re: [Elecraft] Norton and P3 Utility

[James F. Boehner MD via Elecraft]

’73 de JIM N2ZZ
Director – Roanoke Division
Serving ARRL members in the Virginia, West Virginia, South Carolina and North 
Carolina sections
ARRL – The National Association for Amateur Radio™


-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of GRANT YOUNGMAN
Sent: Tuesday, July 04, 2017 8:38 AM
To: K5MWR
Cc: Elecraft
Subject: Re: [Elecraft] Norton and P3 Utility

I have seen numerous reports of this particular Norton heuristic showing up in 
what smells like false positives in many cases, although you can’t just 
discount the possibility I suppose.  Neither Kaspersky nor BitDefender have 
ever found anything awry with P3Utility on systems I use.

You can send the exe file to Norton, supposedly for “further analysis” at 
https://submit.symantec.com/false_positive/ 
.  Whether or not they actually do 
anything with it is anyone’s guess, but I‘ll take them at their word that they 
might at least put P3Utility in “exonerated” status if they find nothing wrong 
with it.  I got tired years ago of Norton spending most of it’s time just 
getting in the way, that I dumped it.  YMMV … 


Grant NQ5T
K3 #2091, KX3 #8342


On Jul 4, 2017, at 8:17 AM, K5MWR via Elecraft  wrote:
> 
> Don't know if anyone else has experienced this but this morning I get this 
> message from Norton that the P3utility program is a threat named 
> "Heur.AdvML.C" and that P3Utility.exe has been removed.
> 
> Don't know if the recent major upgrade of Windows had any effect or most 
> likely it is due to the low number of P3Utility users that also have Norton 
> installed as they show less than 100 users.
> 
> Expect this is just another of those cases where Norton is flagging because 
> of few users so just going to reload.
> 
> Pasted below is the Norton explanation.  No need to flame Norton, I 
> understand its peculiarities just posted for information only.
> 
> 73 Dave K5MWR
> 
> 
> Filename: p3utility.exe
> Threat name: Heur.AdvML.CFull Path: c:\program files (x86)\elecraft\p3 
> utility\p3utility.exe
> 

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[Elecraft] Norton and P3 Utility

[James F. Boehner MD via Elecraft]

The answer is yes.  Norton does flag that file as a threat, and once you 
download it and attempt to install the .exe file, your computer will say that 
it cannot be found, and you will see Norton giving you a notice in the lower 
right of your screen, saying that it is analyzing the file.  It then turns from 
yellow to red, with a big "X" saying that the file was deleted and the threat 
is resolved.

This is where we all blurt out a colorful metaphor. 

It is at this point that trust is involved, that is, that Elecraft would not 
put a malware file on their server.  I think we can all feel safe here!

In the box in the lower right of your screen that I mentioned above, there is a 
link that says "details".  Click on this.

In the next box, the details of the threat are listed, and there are links at 
the bottom of the box.  Click on "Restore" or "Restore File".

You are then asked if you are sure that you wish to restore the threat, and 
that you want Norton to ignore that file in the future.  Click on "yes".

The file will be restored, then double click on it and install the P3 utility.  
Norton will then leave it alone.

Norton has become a bit more aggressive over the last several years.  I really 
cannot say that is a bad thing.  I'd rather deal with the hassle above than 
deal with a virus that trashes my computer and files.  YMMV.

I'm not certain if there is anything that a developer can do to prevent Norton 
or other anti-virus programs from attacking their files, whether it is a 
digital signature, or something else.  None of Elecraft's other utilities are 
considered a threat by Norton in my experience.


’73 de JIM N2ZZ


-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of GRANT YOUNGMAN
Sent: Tuesday, July 04, 2017 8:38 AM
To: K5MWR
Cc: Elecraft
Subject: Re: [Elecraft] Norton and P3 Utility

I have seen numerous reports of this particular Norton heuristic showing up in 
what smells like false positives in many cases, although you can’t just 
discount the possibility I suppose.  Neither Kaspersky nor BitDefender have 
ever found anything awry with P3Utility on systems I use.

You can send the exe file to Norton, supposedly for “further analysis” at 
https://submit.symantec.com/false_positive/ 
.  Whether or not they actually do 
anything with it is anyone’s guess, but I‘ll take them at their word that they 
might at least put P3Utility in “exonerated” status if they find nothing wrong 
with it.  I got tired years ago of Norton spending most of it’s time just 
getting in the way, that I dumped it.  YMMV … 


Grant NQ5T
K3 #2091, KX3 #8342


On Jul 4, 2017, at 8:17 AM, K5MWR via Elecraft  wrote:
> 
> Don't know if anyone else has experienced this but this morning I get this 
> message from Norton that the P3utility program is a threat named 
> "Heur.AdvML.C" and that P3Utility.exe has been removed.
> 
> Don't know if the recent major upgrade of Windows had any effect or most 
> likely it is due to the low number of P3Utility users that also have Norton 
> installed as they show less than 100 users.
> 
> Expect this is just another of those cases where Norton is flagging because 
> of few users so just going to reload.
> 
> Pasted below is the Norton explanation.  No need to flame Norton, I 
> understand its peculiarities just posted for information only.
> 
> 73 Dave K5MWR
> 
> 
> Filename: p3utility.exe
> Threat name: Heur.AdvML.CFull Path: c:\program files (x86)\elecraft\p3 
> utility\p3utility.exe
> 

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[Elecraft] KPA-1500: Gain Mod when FCC Lifts 15db Rule

[James F. Boehner MD via Elecraft]

Kevin,

The current FCC rules for certificating a linear amplifier in the US (in
order for a manufacturer to sell them in the US) is described in Part 97:
http://www.arrl.org/part-97-text . Go down to 97.315 and 97.317.  The 15 dB
rule is 97.317 (2).  The history of this rule comes from preventing the use
of amateur radio amplifiers to be used in the class D Citizens Radio
Service.  

Prior to the rule change in 2006, amps could not be sold in the US that
would amplify frequencies between 24-30 MHz.  The individual ham would have
to do the modification themselves (or have someone do it for them), and
could only receive this modification information if they could prove that
they had a valid FCC Amateur Radio license. For example, my Alpha had a
numerical code sequence tied to the serial number that was given to me after
proof of licensure, one of my MFJ mobile amps had a modification kit, and
another required wiring changes.  So, two conditions had to be met - no
amplification above 24 MHz, and the amp could not have a gain of more than
15 dB.  Again, this prevented, or attempted to prevent, those in the Class D
Citizens radio service from amplifying their 5 watt transceivers to the full
amateur radio legal limit.

Blocking 24-30 MHz from amplification was a bit of a hardship and an
unnecessary rule for the amateur radio service. To simplify,  the FCC
instituted a rule change in 2006, ruling that amateur radio amplifiers just
must have zero gain from 26-28 MHz.  However, the FCC did not remove the 15
dB rule at the time of that rule change, which most agree is also totally
unnecessary.

Expert Linears and the ARRL have both petitioned the FCC to remove the 15 dB
rule.  These petitions are still currently pending FCC review and action.

Should the FCC delete the 15 dB rule, amplifier manufacturers will be able
to build amps that will only require QRP power to obtain full legal limit
power, and be able to obtain FCC type certification to sell them in the US.
The question posed was whether Elecraft will offer a modification program, a
kit or modification instructions should the 15 dB rule be deleted.  The
answer, of course, was TBD.

For Elecraft, this means a KX3 or a KX2 could be amplified to full legal
limit.

So, this is the history as I know it.  I'm sure if I have anything wrong,
There will be more reply posts on this subject than Wayne received after his
KPA1500 announcement last evening!

'73 de JIM N2ZZ

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Kevin
Cozens
Sent: Friday, April 21, 2017 5:52 PM
To: K2
Subject: Re: [Elecraft] KPA-1500: Gain Mod when FCC Lifts 15db Rule

On 2017-04-21 06:43 AM, Richard Thorne wrote:
> So if and when the FCC lifts the 15db gain rule

For those of us not in the US and subject to FCC rules, what is the FCC 15dB
rule?

--
Cheers!

Kevin.

http://www.ve3syb.ca/   |"Nerds make the shiny things that distract
Owner of Elecraft K2 #2172  | the mouth-breathers, and that's why we're
 | powerful!"
#include  | --Chris Hardwick
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[Elecraft] Additional KPA1500 amplifier information

[James F. Boehner MD via Elecraft]

LDMOS technology?


'73 de JIM N2ZZ

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Wayne
Burdick
Sent: Friday, April 21, 2017 12:31 AM
To: Elecraft Reflector
Cc: elecraft...@yahoogroups.com; elecr...@yahoogroups.com
Subject: [Elecraft] Additional KPA1500 amplifier information

Updated FAQ on the KPA1500:

http://www.elecraft.com/KPA1500/KPA1500%20FAQ%20rev%20A1b.pdf

High-resolution front panel photo:

http://www.elecraft.com/KPA1500/KPA1500_cropped_hi.jpg

High-resolution rear panel photo:

http://www.elecraft.com/KPA1500/KPA1500_back_rgb_hi.jpg

KPA1500 web page:

http://www.elecraft.com/KPA1500/KPA1500.htm

* * *

Wayne
N6KR


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Re: [Elecraft] KX3 update utility download removed (i.e. blocked) by

[James F. Boehner MD via Elecraft]

I sent this a little earlier today:


Oliver,

I have Windows 7, so hopefully this will apply to your OS.

Go to the lower right of your screen.  If you have the standard
configuration, there will be a system tray. Left click on the "up arrow" to
bring up the hidden icons.  Right click on the Norton Icon, which is a
yellow check mark with a green one within.  Click on "Disable Auto Protect".
It will give you a protection warning pop-up, and lets you select the
duration of disabling the Auto Protect.  15 minutes is generally enough
time.  Download the file, and install as usual.

Norton is a bit aggressive these days.

'73 de JIM N2ZZ


-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bruce
Beford
Sent: Saturday, March 18, 2017 3:53 PM
To: elecraft@mailman.qth.net; hoosa...@hotmail.com
Subject: Re: [Elecraft] KX3 update utility download removed (i.e. blocked)
by

Well,

I have seen a lot of Norton-bashing, but not one single helpful suggestion.

 

Here goes.

Oliver,

Norton, as well as many other anti-malware programs use different techniques
to try to protect you. Some are known anti-virus definitions, or heuristic
analysis, or looking to see how many other users of their software have
downloaded the particular file you are downloading.

 

Norton will err on the side of caution, and quarantine a file if it does not
have a known "reputation" as safe.

 

When you try to open the file, you will get a small warning box in the
bottom right of the screen that says it has been removed by Norton.

Click on "View Details" within this box. This will bring up another window
that shows that it has been quarantined. Within this box, you will see a
button that says "More Options"- From here, you can tell Norton to Restore
the file. It will then be flagged as OK, and this action will be submitted
to Norton. This helps them keep their Reputation checks updated.

 

You can also open Norton directly, and click on "History". In the list that
appears, you should see where the file was quarantined. You can also restore
it by clicking on that entry in the log.

 

I hope this helps.

-Bruce

N1RX

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[Elecraft] KX3 update utility download removed (i.e. blocked) by Norton Internet Security in Windows 7

[James F. Boehner MD via Elecraft]

Oliver,

I have Windows 7, so hopefully this will apply to your OS.

Go to the lower right of your screen.  If you have the standard
configuration, there will be a system tray. Left click on the "up arrow" to
bring up the hidden icons.  Right click on the Norton Icon, which is a
yellow check mark with a green one within.  Click on "Disable Auto Protect".
It will give you a protection warning pop-up, and lets you select the
duration of disabling the Auto Protect.  15 minutes is generally enough
time.  Download the file, and install as usual.

Norton is a bit aggressive these days.

'73 de JIM N2ZZ

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Oliver
Barrett
Sent: Saturday, March 18, 2017 1:52 AM
To: Elecraft@mailman.qth.net
Cc: Oliver Barrett
Subject: [Elecraft] KX3 update utility download removed (i.e. blocked) by
Norton Internet Security in Windows 7

Hi all,

My Norton Internet Security removed the KX3 firmware update utility from my
Windows 7 PC after I tried to download it, based on crowdsourcing criteria
(only a few hundred users and over a year old).

Any suggestions on how to get around this?

Thanks!
Oliver Barrett  KB6BA

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[Elecraft] Linear thoughts

[James F. Boehner MD via Elecraft]

Just as an FYI,

Expert Linears Dan Tassell KC5PCB makes up a custom plug-and-play cable for the 
K3/SPE, so interfacing is really not a problem.

’73 de JIM N2ZZ

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of garyk9gs
Sent: Thursday, March 16, 2017 10:25 PM
To: j...@kk9a.com; elecraft@mailman.qth.net
Subject: Re: [Elecraft] Linear thoughts

At Orlando the introductory price for the Genius was $6999.00 and they were 
taking orders for. I think, June delivery.  They just received the FCC type 
acceptance a few days before.
I would assume that the SPE amps all integrate with the K3 in a similar 
fashion.  When I used the SPE 2K in CQWW CW it was like having a 1.5K K3..just 
hummed along all weekend. 




73-Gary K9GS
 Original message From: j...@kk9a.com Date: 3/16/17  8:36 PM  
(GMT-06:00) To: elecraft@mailman.qth.net Subject: [Elecraft]  Linear thoughts I 
still have not seen the Genius pricing. I'm not sure what ever happened to the 
Acom 1200S.  Many people use the SPE 1.3KW on expeditions, I wonder how easy it 
is to hook it up to the K3S.  The KPA-500 works nicely with the K3S but giving 
up 4.5dBs is considerable, a KPA-1000 would be hard to resist. 

John KK9A

From: Gary K9GS
Thu Mar 16 19:19:38 EDT 2017

I think that the ship has sailed with respect to Elecraft bringing a legal 
limit SS amp to market.

There are a growing number of lightweight legal limit amps already on the 
market.  The FlexRadio Power Genius looks especially promising: 
http://www.flexradio.com/amateur-products/powergenius-xl/

It only weighs 33 pounds.  I saw it in operation at the Orlando HamCation and 
it looked very impressive operating all weekend into a dummy load at a 
conservative 1.5 kw output.

SPE also just announced a 1.5 kw amp..something I'm surprised they did given 
that they already have a 1 kw, 1.3 kw, and a 2kw amp on the market.  I know of 
several people that have the 1 kw amp and use it with their K3 radios and they 
love them.  I've used the big SPE amp in CQWW CW and it worked flawlessly all 
weekend without a hiccup.

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Re: [Elecraft] (OT redoux) MAG LOOP ANTENNAS

[James F. Boehner, MD via Elecraft]

For those interested, the ARRL has a new book entitled "Ham Radio from
Indoors".  It is a quick read with a lot of good ideas!

'73 de JIM N2ZZ

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Robert
'RC' Conley
Sent: Sunday, January 22, 2017 9:16 AM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] (OT redoux) MAG LOOP ANTENNAS

Guys;
I'm anticipating a move to a seniors villa and I know I will be unable to to
take my antenna farm and most of the ham shack. I've decided on my KX2 with
ATU (grab-n go). A MAG LOOP should allow indoor operations at QRP power
levels.Thanks for your thoughts.
73
KC5WA

--
May You Live Long and Prosper
what's life without a few dragons
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[Elecraft] How to Order Elecraft Parts

[James F. Boehner MD via Elecraft]

Ted,

This just pertains to your DB9 backshell situation-I ordered several of them
off of amazon.com.

It's sad we can't count on Radio Shack to have parts anymore.

’73 de JIM N2ZZ


-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dauer,
Edward
Sent: Tuesday, May 17, 2016 6:19 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] How to Order Elecraft Parts

Is there a way to determine the prices of parts available from Elecraft and
then to order them?  I am aware of the ³Parts and Mod Kits² page, but that
doesn¹t begin to list everything.  For example - and there are many other
examples - I need to buy a couple of DB9 backshells.  Simple, yes?
To my dismay, the Radio Shack stores across the 100 mile stretch between my
city home and my operating QTH don¹t carry them any more.  I can find them
at other sellers online but the handling and delivery charges for quantities
under 1,000 are severe.  Ham Radio Outlet doesn¹t carry much by way of DIY
parts either.  In this case I just ordered them from Elecraft as an add-on
to a kit order, without knowing the cost.  Maybe Elecraft doesn¹t want to be
in the small parts business, and that would be a sensible business judgment.
But there are lots of parts used in their kits for which some klutz who
stepped on one would like to buy a replacement.  So, is there a way to
access a parts price list without bothering Richard every time . . . ?

Ted, KN1CBR

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[Elecraft] Logging Programs

[James F. Boehner MD via Elecraft]

Terry,

I use a freeware program called Logger32:  www.logger32.net .  I became
aware of the program as someone close to me did tech support prior to
becoming an SK.  It does have a healthy yahoogroup for questions.  They make
no bones about it NOT being a contest software program.  Otherwise, it does
virtually everything a logging software needs to do.

For contesting, I use the W3FJP software, as it is easy to use.  My goal is
to learn N1MM, as that is what I believe to be the de facto contest program.
I then export the contest log as an ADIF file, and import it into logger 32
which has my main log.  Both will do Cabrillo format which is the format in
which contest files are generally submitted.

'73 de JIM N2ZZ

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Terry
Brown
Sent: Saturday, February 27, 2016 5:35 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Logging Programs

As the original sender of this thread, I want to thank all of you for taking
the time to answer my question.  I was amazed at the number of logging
programs out there, and the satisfaction that each of you have with the
program you have.  I have spent the better part of a day looking at the ones
you suggested.  I still haven't decided whether to stay with LOGic 9 or go
with something else.  LOGic 9 is a very inclusive program.  It's interface
is a bit dated, but it has served me very well over the years.  I was just
getting frustrated with so many crashes. 

 

Thanks again, and Very 73's to all,

 

Terry Brown, N7TB

 

 

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[Elecraft] KPA1500

[James F. Boehner MD via Elecraft]

Wayne,

Is it fair to ask why the project was scrapped?  Certification, cost,
production problems?

'73 de JIM N2ZZ


-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Wayne
Burdick
Sent: Friday, February 19, 2016 8:36 PM
To: Doug Person
Cc: elecraft@mailman.qth.net
Subject: [Bulk] Re: [Elecraft] KPA1500

The only thing that burns 1500 Watts at my QTH is the electric heater my
teenage daughter forgets to turn off half the time when she leaves for
school. The electric bill is already too high :)

Wayne


On Feb 19, 2016, at 9:51 AM, Doug Person via Elecraft
 wrote:

> I think Elecraft, being in close proximity to Apple, has learned, as apple
has,  how to keep its new products secret.  Unless you could sneak into
Wayne's home laboratory, we will never know what he's cooking up until the
big reveal.




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Re: [Elecraft] KIO3B Upgrade Kit for the K3

[James F. Boehner MD via Elecraft]

Robert,

I have not had the experience doing this, but on page 13 of the KIO3B update 
manual, it instructs how to force a firmware download using the USB port by 
temporarily moving the internal slide switch to the USB position.

’73 de JIM N2ZZ


-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of ROBERT 
KIMPEL
Sent: Monday, February 08, 2016 10:41 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] KIO3B Upgrade Kit for the K3

I just completed the install of the KI03 update to my K3 SN 4843 and guess 
what? I forgot to update the firmware to the latest version (4.86 now). The PC 
won’t talk to the K3 through the USB! Do I need to restore the old boards and 
then update? I am watching for your HELP!
Rob, KJ6ILO
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[Elecraft] K3 KIO3

[James F. Boehner MD via Elecraft]

Can anyone let us know what the KIO3's are selling for?

'73 de JIM N2ZZ


-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Lewis
Phelps
Sent: Monday, January 18, 2016 4:07 PM
To: Elecraft Reflector
Subject: Re: [Elecraft] F/S K3 KIO3

Folks, my need for a KIO3 has been met.  Thanks.

Lew N6LEW


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Re: [Elecraft] K3 integration with SPE Expert 2K-FA

[James F. Boehner MD via Elecraft]

Bill,

I do have the same setup that you have (K-Line), but have been looking at
the Expert amps.  The user manuals
http://www.expertlinears.com/products.html do have the information to wire a
cable to interface the K3(S) with the amp.  They apparently have someone
that will wire a cable up for you, as noted on their home page.  It seems
like a very simple build, though.

Here is a YouTube video I found interfacing the 1.3K-FA with the K3S and a
computer.  Interesting that you need to select "Kenwood" in order for the
amp to read the correct frequency from the K3S:
https://www.youtube.com/watch?v=3rEKUbMuVKc  However, they may have updated
the amplifier firmware since this video.

I saw the last post on SO2R, with the requirement of a receive only antenna.
That seems a bit problematic.

'73 de JIM N2ZZ



On Wed, Dec 23, 2015 at 3:18 PM, Bill OMara via Elecraft <
elecraft@mailman.qth.net> wrote:

> I looking for input on how well the K3 will integrate with the SPE 
> expert 2K-FA?  I currently have the K3 integrated with the KPA-500 and 
> the KAT-500 and I'm very happy with how they work together but I'm not 
> happy with the limited 500W output of the KPA-500.
>
>
>
> So, I looking to understand how the K3 will integrate with the 2K-FA 
> in a single station set-up and in a SO2R set-up with two K3?
>
>
>
> Thanks for your help.
>
>
>
> 73 Bill  W4RM
>
>
>
> Please use w...@aol.com   as my primary account
>
>
>
> __
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> list: http://www.qsl.net/donate.html Message delivered to 
> rta...@gmail.com
>



-- 

Rick Tavan
Truckee, CA
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Re: [Elecraft] [OT] Lulu sale on KE7X books

[James F. Boehner MD via Elecraft]

Fred,

Thank you for the information!

This is an excellent opportunity to purchase one of your books!

'73 de JIM N2ZZ



-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Cady,
Fred
Sent: Tuesday, December 01, 2015 9:08 AM
To: Elecraft list
Subject: [Elecraft] [OT] Lulu sale on KE7X books


www.lulu.com has a 25% discount until 12/7.  Code is HOLIDAYS25.
73,
Fred KE7X
See www.ke7x.com for all KE7X Elecraft books.
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Re: [Elecraft] [Bulk] Re Elecraft] Crackling in Headphones

[James F. Boehner MD via Elecraft]

To all with the crackling sound,

I had that problem with AM broadcast.  I enabled the AGC, and the crackling
went away.  No issues right now.

YMMV!

'73 de JIM N2ZZ


-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Brian
D. Comer
Sent: Monday, November 30, 2015 6:41 PM
To: elecraft@mailman.qth.net
Subject: [Bulk] [Elecraft] Re Elecraft] Crackling in Headphones

 

I have noted a similar Cracking in the speaker when listing to AM broadcast
station KFI (640 KHz). At first I assumed it was just overload as I was
using a 160 meter dipole and the signal strength meter was maxed: however
moving to steppir antenna tuned to 40 meters gave the same result with and
smeter reading of only S9. 

I have a local AM station on 1450 KHz that produces a -10 dBm into a
spectrum analyzer and -30 dBm on the P3. I had assumed from this, without
making any further checks, that the receiver was just overloaded.  

The cracking sound does not sound like any dynamic range problem I have
heard before but I have not taken the time to make any serious tests. 

I make these comments because I am not convinced this is any form of
overload and wonder if it could be related to your problem.

 

73 Brian KF6C.  

 

On 30 Nov 2015 14:02, j...@kk9a.com wrote:

> There are times that I have noticed a crackling sound in my headphones

> with my K3S. This is not the normal band noise static that has depth,

> this crackle sound seems very close to my ears.  I first noticed it

> with my Heil headset and I tried wiggling the connection, changing the

> RX EQ settings and turning on noise reduction but nothing had any

> effect. It randomly comes and goes and I think I have also heard it on

> TX. I thought perhaps it was related to the Heil brand headphones. 

> Last night I plugged in a new Sony professional headphone and the

> crackling sound was very strong for a few minutes and then eventually

> went away. I have never experience this with any other radio and I

> have no idea what is causing it or how to make it go away.

> 

> John KK9A

 

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[Elecraft] Microphone Setup

[James F. Boehner, MD via Elecraft]

Don, 

Thanks to you, Richard, Gene, Charlie, Bob and Mitch for your constructive
and educational responses on this topic.

Don, I am happy to say that the settings you mention below were the ones
that I settled on after some experimentation prior to my post.  I appreciate
the validation and the background on the reasons why those settings are the
desired ones.

Not all information is in the manual, certainly not specifics.  The
collective experience on this list is greatly appreciated, especially from
those of us that are new to the Elecraft line.

Thanks again!

'73 de Jim N2ZZ



-Original Message-
From: Don Wilhelm [mailto:w3...@embarqmail.com] 
Sent: Wednesday, November 04, 2015 8:06 AM
To: James F. Boehner, MD; elecraft@mailman.qth.net
Subject: Re: [Elecraft] Microphone Setup

Dr. Jim,

There is no FAQ that I am aware of.
Actually the information is pretty basic.  Microphone elements come in two
basic types - Electret and Dynamic.
The Electret types need a DC bias applied to the AF line.
The Dynamic elements should *not* have bias applied or they will be
distorted.

The other thing that often causes confusion is the mic plug pinout. The mic
plug wiring must match the pin arrangement used in the transceiver, and that
information is shown in the transceiver manual.  In the case of the Elecraft
K3 and K3S, the 8 pin mic pinout differs only from that used by Kenwood in
that the use of pins 5 and 6 are reversed.  Since most Kenwood unamplified
dynamic microphones do not use pins 5 and 6, most all Kenwood dynamic
microphones will work directly with the K3 and K3S.

Heil microphones normally use a 4 pin XLR as a generalized connector
*and* use an adapter or special cable to change that XLR connection to that
required for the transceiver.  The adapter to be used with the K3 and K3S is
the one for the Kenwood (which has a red band).

Heil microphones come in both the dynamic and the electret types, although
most are dynamic.  If the microphone is designated with a "-iC" 
or "-K2" it is an electret type.

A lot of information on microphones and transceiver connections can be found
at http://homepage.ntlworld.com/rg4wpw/date.html.  G4WPW has done an
excellent job of collecting information about microphones, mic pinouts and
even schematics.

In your particular case with the Heil PR-781, use the Kenwood cable (Heil
CC-1XLR-K) with that microphone and make certain the bias is turned off.
I believe that microphone has a rather low output, so you may have to use
the high range for the mic gain.
So - the K3(S) MIC SEL menu should be set to "FP H".
Set the mic gain as described in the K3 manual - first set compression to
zero, then adjust the MIC GAIN until you see 5 to 7 bars illuminated on the
ALC meter (that can be done in TX TEST so no RF is produced).  
Then bring the compression up to your tastes, usually in the 3 to 6 dB
range.

73,
Don W3FPR


On 11/3/2015 10:44 PM, James F. Boehner, MD via Elecraft wrote:
> Is there an FAQ for microphone setups for the K3(S)?
>
> Particularly, I am looking how to set up the Heil PR-781 on the K3, 
> including the menu setup.
>
>

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[Elecraft] Microphone Setup

[James F. Boehner, MD via Elecraft]

Is there an FAQ for microphone setups for the K3(S)?

Particularly, I am looking how to set up the Heil PR-781 on the K3,
including the menu setup.

TIA,

'73 de JIM N2ZZ


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Re: [Elecraft] K3 Remote

[James F. Boehner MD via Elecraft]

Fred, agreed.  I'm glad I had someone with experience to help me set up the
RemoteRig Box.

To put the K3 in TERM mode, hold in the menu button for 5 seconds.  To
restore to normal operation, repeat the procedure.

David sent me the K3-K3S Remote FAQ which has a lot of good information on
remote operation.  The K3/0 manual has a lot of good information as well.

'73 de JIM N2ZZ

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Fred
Jensen
Sent: Saturday, October 17, 2015 5:25 PM
To: Elecraft Reflector
Subject: [Elecraft] K3 Remote

I'm setting up a RemoteRig control site using my K3 which I'll use to
remotely operate W7RN.  Can someone tell me how my K3 gets into TERM mode?

Setting up the RemoteRig box is a non-trivial process.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the Cal QSO Party 1-2 Oct 2016
- www.cqp.org
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[Elecraft] K3/0 Forum?

[James F. Boehner MD via Elecraft]

To All,

I know the main advantage of having one central list (this one) is that it is 
monitored by Elecraft, and answers are provided by them, as well as other 
knowledgeable individuals on the forum.

I have moderated the elecraft...@yahoogroups.com  for some time (Waaay before 
having a K3), and fortunately, Elecraft monitors that list as well.

Since there appears to be a need, I have created elecraft_k...@yahoogroups.com 
for anyone who would like to have a separate forum.  I would certainly welcome 
Elecraft to participate, as well as RemoteRig and Remote hams.

I want to make it clear that I do not want to divide this forum, just provide a 
space where those who have a particular interest in Remote operating can gather.

I am currently borrowing a K3/0 in anticipation of one I have on order, and 
purchased RemoteRig when I purchased my K3.  All I can say is that it was 
indeed fortunate that I had someone who has set up a number of remote stations 
with RemoteRig to guide me through the process.  It is not "a walk in the park" 
for someone who has not done it before.  Hopefully this new forum can help.

David from Elecraft did send me a separate communication dated June 2015 (K3 
and K3S Remote System FAQ) on remote operating, and I've found it very helpful.

If anyone cares to join the list, elecraft_k3-0-subscr...@yahoogroups.com 
should do it, but going to http://groups.yahoo.com and searching for 
Elecraft_K3-0 would be best. It will be moderated.  Please place your callsign 
in the "why you want to join this group" for quick approval.

’73 de JIM N2ZZ


-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ed Gray 
W0SD
Sent: Sunday, October 11, 2015 4:56 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3/0 Forum?

The lack of a good manual and no diagram for the K3/0 is way..below the 
normal Elecraft standards.  It is especially bad if in addition to remote rig 
you sometimes want to use the USB cable and remote hams.  
There just is no documentation as to what is going on!

Ed W0SD

On 10/11/2015 3:30 PM, David Christ wrote:
> I don’t know about a separate forum, but I am going to start looking at a 
> remote installation for when we move into a retirement community and will 
> want to know where the information is to be found.
>
> David K0LUM
>
>
>> On Oct 11, 2015, at 3:16 PM, jlbates4  wrote:
>>
>> I was wondering why the K3/0 or K3/Remote Ops doesn't have a dedicated forum.
>> Just a thought...
>>
>> The reason I ask is that I would really like a better manual for the K3/0.
>> I have a lot of questions - simple things, like how do I control the 
>> LCD display or adjust the LED brightness?  Is there a "local" menu 
>> system that allows for K3/0 configuration?
>>
>> 73 de K8OI
>>
>
>
>
>
> __
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> w...@triotel.net

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[Elecraft] Elecraft SP3 External Speaker details

[James F. Boehner MD via Elecraft]

How about this one:

http://www.hamradio.com/detail.cfm?pid=H0-011764#results 

Of note, I've never used the passive audio filters on this or the SP-20.

'73 de JIM N2ZZ


-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gene
Gabry
Sent: Monday, September 14, 2015 11:01 PM
To: 'Elecraft Reflector'
Subject: [Elecraft] Elecraft SP3 External Speaker details



Very good point Tony
http://www.universal-radio.com/catalog/speakers/1696.html

Puts things into perspective :) 

73 Gene N9TF

K3S 10057

>Subject: Re: [Elecraft] Elecraft SP3 External Speaker details

>Have any of you who are complaining seen the prices of speakers from 
>other
radio manufacturers?  How about the other third-party speaker makers?
>Elecraft is in the ballpark.

>A lot of folks asked (begged, bugged, pestered...) Elecraft to come out
with a speaker for the line.  They finally relented.  Thank you, Elecraft!

>73, Tony K4QE
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[Elecraft] K3: reverse 12 volt supply

[James F. Boehner MD via Elecraft]

Whew!

Not a good feeling-but it can happen to any of us, regardless of how careful
we are.

Elecraft has been very good on suggesting helpful modifications to the
radio.  Any thoughts? Perhaps an in-line diode?

I'm not sure if that would result in a significant voltage drop-just a
thought.

'73 de JIM N2ZZ


-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of roger
wood
Sent: Sunday, September 13, 2015 1:24 PM
To: Elecraft
Subject: [Elecraft] K3: reverse 12 volt supply

I managed to connect a 12 volt car battery backwards to the K3.

There was a lot of smoke and the breaker popped.  The RX and TX appear to
have survived, however the internal 100 Watt amplifier now shows an
over-current fault and quickly switches off.  I haven't dared open it up yet
- far too depressed now. I'll leave it till next  weekend.

Any comments on what I might expect to find inside and how to idiot-proof it
for my future operation?

73
Roger
KK3RW / G3WEW
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[Elecraft] I wonder how many folks have had buyer's remorse on a K3/K3S purchase?

[James F. Boehner MD via Elecraft]

My only remorse was deciding to buy a loaded K3 two months before the K3S
came out...

But, such is life.

The true advantage is that Elecraft keeps their current users in mind when
they design new equipment.  Upgrades are indeed possible for older units.

I say that as I bid my K3 farewell on its 5 week voyage (1 week each way,
with approximately 3 wks of turn-around time) to the left coast for
upgrades.

I was asked about 10 years ago to moderate the Elecraft_K3 list, even though
I didn't own one.  So, I've at least been a part of the community for some
time.  I finally decided to become a participant-but my timing was two
months off :-( !

During that time, I have never seen a company that is not only USA based,
but has customer service that is better than I've seen anywhere.  That, and
the desire to keep their radio on the top of the heap while respecting their
longtime customers by offering upgrades.

Elecraft deserves our business!

'73 de JIM N2ZZ


-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ian -
Ham
Sent: Monday, August 03, 2015 9:13 AM
To: 'Jerry Moore'; elecraft@mailman.qth.net
Subject: Re: [Elecraft] I wonder how many folks have had buyers remorse on a
K3/K3S purchase?

Jerry,

I don't regret for one minute any of my Elecraft purchases. I bought my
K3/P3 used several years ago, then added the KAT500 and KPA500 later as
resources allowed. I also had a W2 wattmeter for several years, which I sold
after it became extraneous to my needs. I also use the T1 QRP tuner with my
FT-817 when I operate portable.

I've been very happy with all the Elecraft gear I own.

73 de,

--Ian
Ian Kahn, KM4IK
Roswell, GA  EM74ua
km4ik@gmail.com
10-10 #74624, North Georgia Chapter #2038 PODXS 070 #1962 K3# 281, P3 #688,
KAT500 #860, KPA500 #1468

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jerry
Moore
Sent: Monday, August 3, 2015 8:59 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] I wonder how many folks have had buyers remorse on a
K3/K3S purchase?

Just asking. It's a lot of money but appears to be a lot of radio. It's not
as flashy as some.

 

Just a lot to think about as I save up.

Jer

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