Re: [Elecraft] Future KX3/KX2 accessories?

[Steve Sergeant]

On 3/29/17 18:35 PM, Wayne Burdick wrote:
> What future accessories, antennas, etc. would you like to see for the 
> KX-line? 

Here's a few non-trivial brainstorms:

1) A bluetooth interface that allows rig control and audio I/O on a
nearby (smart-) phone. While the front-panel UIs of the KX2  makes
really clever use of limited knob and switch space, being able to build
richer interfaces into the phone would be awesome. The possibilities
become really crazy then: Logging, some kind of mini waterfall display,
sound recording and playback, comparatively unlimited freq. memories
with extended meta-data, calendar interaction, storing QSO logs for
later acknowledgment in email, slow-scan TV support, etc. and too many
other et ceteras to count.

2) An automotive (12V) charger for the on-board KX2 battery.

3) A really tiny, ultralight 9:1 UNUN--perhaps AA battery size. This
would be for matching a long wire antenna that doesn't start right at
the radio (instead of using the BNC-binding-posts adapter) in situations
when you want the radiating wire some distance away, like outside your
car, tent, or a metal-roofed cabin. Imagine trying to make contacts from
inside this kind of building in the dead of winter after carrying your
gear in on skis or snowshoes: [ http://clairtappaanlodge.com/bradley-hut ]

4) An "Otter Box" style or neoprene case for both the KX2 & KX3 that
would protect them from slightly rougher handling.

And I second the idea for a way to back up all of your memories,
settings and tunings.

--Steve, KC6ZKT

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Re: [Elecraft] Future KX3/KX2 accessories?

[Mark via Elecraft]

Re:  Being able to back up the (ATU) L/C settings before heading out the door 
and then restoring them when you come back home would be great.

I second Jim's suggestion, even if you could only do it with the KX3 utility.  
Can I currently do this by saving and restoring the configuration?  I don't 
think so, but i admit, I've never tested it.

Mark
KE6BB


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[Elecraft] Elecraft K3s, microKEYER II and JT65

[German Duran]

Dear friends, I need help. I have an Elecraft K3s and a microKEYER II. I
can work perfectly RTTY, CW, BPSK31 but I have not managed to work JT65
with any of the programs that exist for JT65 like JT65 HF, HB9HQX, WSJT. I
have followed the instructions that come with microKEYER II, I configured
the urouter that brings microKEYER II in many ways, I have written to Joe
Subich and he has not answered me. Who can help me and give some basic
instructions?
I hope someone helps me. 73
German HK3J
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[Elecraft] K3S Sound Card and Windows 10

[Marvin Wheeler]

Has Anyone else had problems with Windows 10 recognizing the sound card in a
K3S. All of the drivers are up to date. It is not the sound card because
another laptop recognizes the card but a relatively new Dell laptop with
windows 10 does not. Any suggestions?

 

Thanks

KG7V 



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Re: [Elecraft] Future KX3/KX2 accessories?

[Glen Torr]

Hi All,

I would second Ryan's suggestion, possibly a 2 meter (perhaps from the KX3)
and a similar 70 cm. transverter in a low height box that sits on top of
the KX2 as per the XV transverters with the K2.

73

Glen VK1FB

On Thursday, March 30, 2017, Ryan Noguchi via Elecraft <
elecraft@mailman.qth.net> wrote:

> >Here's your chance to get us back into the lab :)  What future
> accessories, antennas, etc. would you like to see for the KX-line?
>
>
>
>
> I'd like a 2M and 70CM transverter for working the linear satellites.
> Ideally it would be capable of full-duplex operation with reverse VFO
> tracking, but I'd settle for being able to use it half-duplex. A lot of
> folks use one or two FT-817NDs as the foundation for their portable
> satellite station, and it would be nice to be able to do that with the KX3
> or KX2. While an internal unit would be more convenient, an external unit
> would offer the possibility of working with both the KX3 and KX2, and a
> larger connector (BNC, N, or SO239) for use with typical beam antennas.
>
> I might buy an iambic or single-lever paddle that connects to the KX3 with
> the paddles pointing to the left. To use the KXPD3 without my wrist
> cramping up, I'd have to turn the KX3 90 degrees to the left.
>
> More programmable function keys for storing macros or menu items would be
> useful on the KX3. Maybe hold PF2 then press any other button to access the
> programmable function stored there. The same approach could be taken with
> the KX2's single PF button.
>
> More DVR memories would be useful, even if they draw from the same memory
> storage, e.g., if the total stored time for all messages was limited to 30
> seconds or less. Even just one more memory would be incredibly helpful for
> Field Day and other contests:  call, CQ, and exchange.
>
> 73, Ryan AI6DO
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Re: [Elecraft] Future KX3/KX2 accessories?

[Ryan Noguchi via Elecraft]

>Here's your chance to get us back into the lab :)  What future accessories, 
>antennas, etc. would you like to see for the KX-line? 




I'd like a 2M and 70CM transverter for working the linear satellites. Ideally 
it would be capable of full-duplex operation with reverse VFO tracking, but I'd 
settle for being able to use it half-duplex. A lot of folks use one or two 
FT-817NDs as the foundation for their portable satellite station, and it would 
be nice to be able to do that with the KX3 or KX2. While an internal unit would 
be more convenient, an external unit would offer the possibility of working 
with both the KX3 and KX2, and a larger connector (BNC, N, or SO239) for use 
with typical beam antennas.  

I might buy an iambic or single-lever paddle that connects to the KX3 with the 
paddles pointing to the left. To use the KXPD3 without my wrist cramping up, 
I'd have to turn the KX3 90 degrees to the left. 

More programmable function keys for storing macros or menu items would be 
useful on the KX3. Maybe hold PF2 then press any other button to access the 
programmable function stored there. The same approach could be taken with the 
KX2's single PF button. 

More DVR memories would be useful, even if they draw from the same memory 
storage, e.g., if the total stored time for all messages was limited to 30 
seconds or less. Even just one more memory would be incredibly helpful for 
Field Day and other contests:  call, CQ, and exchange. 

73, Ryan AI6DO   
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Re: [Elecraft] [KX3] Future KX3/KX2 accessories?

[Geoff Allsup]

PFn on the KX2 suggests the possibility of multiple macro capability as on the 
K3(S) and KX3 - sure would be nice :)

geoff - W1OH 



Sent from my iPhone

Geoff Allsup, W1OH   gall...@whoi.edu or w...@whoi.edu
Senior Engineer Upper Ocean Processes Group
Woods Hole Oceanographic InstitutionWoods Hole, MA


> On Mar 29, 2017, at 21:35, Wayne Burdick n...@elecraft.com [KX3] 
>  wrote:
> 
> Hi all,
> 
> The weather's been great in the Bay Area lately. That always makes us want to 
> escape the lab for microDXpeditions to local parks, trails, beaches, and 
> summits. This is what the KX-line is all about. 
> 
> Here's your chance to get us back into the lab :) What future accessories, 
> antennas, etc. would you like to see for the KX-line? 
> 
> 73,
> Wayne
> N6KR
> 
> __._,_.___
> Posted by: Wayne Burdick 
> Reply via web post•   Reply to sender •   Reply to group  •   
> Start a New Topic   •   Messages in this topic (1)
> 
> Have you tried the highest rated email app?
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Re: [Elecraft] Future KX3/KX2 accessories?

[Bill Frantz]

I have some design notes

On 3/29/17 at 6:35 PM, n...@elecraft.com (Wayne Burdick) wrote:

Here's your chance to get us back into the lab :)  What future 
accessories, antennas, etc. would you like to see for the KX-line?


I have had a project which has sit on the back burner for a long 
time. Here are the requirement notes I have:


  Make switching between Data/Voice/CW easy - handle VOX, Mic 
bias & levels.


  Connect to computer/phones/mic to the radio without switching plugs.

  Contain "sound card"? + hub + RS232 to USB --> one cable 
computer connection ala K3S


  Run headphones/speaker + digital at the same time

  Amp for stereo speakers

All of these seem to be relatively easy, at least I thought I 
could do them. However life has left them as just a desired 
list. If you do them before me, I'm likely to buy your solution.


73 Bill AE6JV

---
Bill Frantz| Security is like Government  | Periwinkle
(408)356-8506  | services. The market doesn't | 16345 
Englewood Ave
www.pwpconsult.com | want to pay for them.| Los Gatos, 
CA 95032


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[Elecraft] FS: Fully Loaded Early K3 SN00176

[zumbruns]

I have for sale an early K3, SN00176. The radio is in excellent condition and 
has all known mods/updates performed including the K-Pod mod. The KBP3MDKT mod 
to allow receiving in 100-500 kHz range has not been done. The radio includes: 
K3/100; KRX-3; KFL3A 200 Hz filter X2; KFL3A 500 Hz X2; one KFL3A 6 kHz filter 
on main board; KBPF3; KTCXO3-1; and KXV3B. Both receivers include new 
Synthesizer Boards. 
I am asking $2000.00 plus shipping. Thanks W0SZ @970-302-4580 or w...@arrl.net. 
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[Elecraft] New product

[Ken G Kopp]

I'd buy one ... probably two ... W2's made in a KX3 style housing.

73

Ken - K0PP
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[Elecraft] FS: Fully Loaded Early K3 SN00176

[zumbruns]

Hello, all. I have a correction to my previous post. The K3 does not include 
the KIO3B. Sorry for the confusion. 73, Steve W0SZ. 970-302-4580 or 
w...@arrl.net. 
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Re: [Elecraft] [KX3] Future KX3/KX2 accessories?

[Mike Morrow]

Wayne asked:

> What future accessories, antennas, etc. would you like to see for the 
> KX-line? 

Number One on my list:  A KX2 system schematic similar to what has been 
available for several years for the KX3.

(I hate the appearances of "appliance operating"...unavoidable when basic 
technical information is not made available.)

Mike / KK5F
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Re: [Elecraft] Future KX3/KX2 accessories?

[James Bennett]

Wayne,

I really love my KX3/PX3/KXPA100 setup. Most of the time I use it on my home 
QTH desk, right next to the K3/100 and P3. Hardware-wise, I am quite happy with 
it.

One thing that is a bit annoying is not being able to backup / restore the KX3 
internal tuner settings. Why? Well, after going through each band and all of 
the segments on each of them, training the KX3 tuner, it really is not cool to 
take the rig out on a micro or mini DXpedition and loose all the home antenna 
settings when the rig gets trained for use with a portable antenna. Coming home 
then means having to go through the training process all over again. Being able 
to back up the L/C settings before heading out the door and then restoring them 
when you come back home would be great.

73, Jim / W6JHB


> On   Wednesday, Mar 29, 2017, at  Wednesday, 6:35 PM, Wayne Burdick 
>  wrote:
> 
> Hi all,
> 
> The weather's been great in the Bay Area lately. That always makes us want to 
> escape the lab for microDXpeditions to local parks, trails, beaches, and 
> summits. This is what the KX-line is all about. 
> 
> Here's your chance to get us back into the lab :)  What future accessories, 
> antennas, etc. would you like to see for the KX-line? 
> 
> 73,
> Wayne
> N6KR
> 
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> Message delivered to w6...@me.com

James Bennett
w6...@me.com



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Re: [Elecraft] Future KX3/KX2 accessories?

[AE0MM via Elecraft]

I'd love to have 2m/70cm capability in my KX2, including RX for NOAA weather 
broadcasts.

Thanks,

--ae0mm

 Original Message 
Subject: [Elecraft] Future KX3/KX2 accessories?
Local Time: March 29, 2017 8:35 PM
UTC Time: March 30, 2017 1:35 AM
From: n...@elecraft.com
To: Elecraft Reflector , k...@yahoogroups.com 


Hi all,

The weather's been great in the Bay Area lately. That always makes us want to 
escape the lab for microDXpeditions to local parks, trails, beaches, and 
summits. This is what the KX-line is all about.

Here's your chance to get us back into the lab :) What future accessories, 
antennas, etc. would you like to see for the KX-line?

73,
Wayne
N6KR

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Re: [Elecraft] [KX3] Future KX3/KX2 accessories?

[Peter LaBissoniere]

Beer holder would be nice Wayne.

Sent from my iPhone

> On Mar 29, 2017, at 8:35 PM, Wayne Burdick n...@elecraft.com [KX3] 
>  wrote:
> 
> Hi all,
> 
> The weather's been great in the Bay Area lately. That always makes us want to 
> escape the lab for microDXpeditions to local parks, trails, beaches, and 
> summits. This is what the KX-line is all about. 
> 
> Here's your chance to get us back into the lab :) What future accessories, 
> antennas, etc. would you like to see for the KX-line? 
> 
> 73,
> Wayne
> N6KR
> 
> __._,_.___
> Posted by: Wayne Burdick 
> Reply via web post•   Reply to sender •   Reply to group  •   
> Start a New Topic   •   Messages in this topic (1)
> 
> Have you tried the highest rated email app?
> With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app 
> on the market. What are you waiting for? Now you can access all your inboxes 
> (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 
> 1000GB of free cloud storage.
>  
> VISIT YOUR GROUP New Members 14 New Photos 2
> • Privacy • Unsubscribe • Terms of Use 
> .
>  
> 
> __,_._,___
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[Elecraft] Future KX3/KX2 accessories?

[Wayne Burdick]

Hi all,

The weather's been great in the Bay Area lately. That always makes us want to 
escape the lab for microDXpeditions to local parks, trails, beaches, and 
summits. This is what the KX-line is all about. 

Here's your chance to get us back into the lab :)  What future accessories, 
antennas, etc. would you like to see for the KX-line? 

73,
Wayne
N6KR

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Re: [Elecraft] Elecraft K3 For Sale

[Carl Jón Denbow]

For those who don't care to go to the QTH.com website, here's the text to my ad:

Elecraft K3 100 Watt HF transceiver SN: 06xx. Contains filters -- KFL3A-250, 
KFL3A-6K, AND KFL3A-2.8K, is in good condition and fully functional. When I 
bought this rig, both side panels were heavily scratched. I replaced the panels 
as well as most screws with stainless steel screws, and the rig is now a 9 out 
10 cosmetically, with only a few very small scratches. Rig was back at the 
factory last November (11/17/2016 invoice date) and at that time was upgraded 
with KIO3B, KXV3B, and KSYN3A and the previously mentioned 2.8 filter. Also a 
number of updates were performed at that time so that when it left factory it 
was certified to "meet or exceed all factory specifications." [Cost of 
upgrades: $1,343.55.] 
In addition to the above, sold with following extra features:
KAT3A Auto Tuner
KPA100 100 watt amplifier module
KFL3A-250Hz KDVR Digital Recorder 
Additional photos available upon request.
Your Price: $2,500, shipped your CONUS QTH.
Greatly prefer PayPal for payment.

Sent from my iPhone
===
Carl Jón Denbow, N8VZ
17 Coventry Lane
Athens, Ohio 45701-3718
 
c...@n8vz.com
www.n8vz.com
EM89wh
 
IRLP 4533   Echolink 116070
 
PSK and JT65 Forever!
===

> On Mar 22, 2017, at 1:23 AM, Carl Jón Denbow  wrote:
> 
> Gentlemen and Ladies:  I have both a K3 and K3s, as well as a bunch of
> other
> Elecraft stuff.  However, I’ve decided to sell my K3.  It is an early
> serial
> number (676) that I bought used, but it has been back to factory a few
> months ago for many upgrades and updates.  You can see the details here:
> https://swap.qth.com/search-results.php?keywords=n8vz
> 
> =call
> 
> 
> 
> As stated in the QTH.com classified, I greatly prefer payment via PayPal.
> Thanks for looking.
> 
> 
> 
> 73,
> 
> 
> 
> Carl
> 
> 
> 
> ==
> Carl Jón Denbow, N8VZ
> 17 Coventry Lane Athens, Ohio 45701-3718
> c...@n8vz.com 
> www.n8vz.com 
> 
> EM89wh
> IRLP 4533 Echolink 116070
> 
> PSK and JT65 Forever!
> ==
> 
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[Elecraft] Amp/tuner

[John's email]

While I tend to operate QRP most of the time, I do have a KPA 100 with my KX3.  
When out in my RV I.  When I had a K3 I also had a KPA 500. I have the 20 watt 
tuner in the KX3 for picnic table ops. I use an SGC smart tuner in my rv and at 
home I have a SteppIR antenna that is always resonant no matter where I 
operate. I'd have to go along with the optional tuner in a big amp. It would do 
me no good to have a fixed tuner in the amp.  I did not order that tuner in my 
KPA 100. 
I am sure there are many others who have no need for a tuner but others who do. 
The simple and elegant solution is an optional add on tuner 

de ke4d


John

Sent from my iPad
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Re: [Elecraft] K2 bad encoder?

[Harry Yingst via Elecraft]

Search for Digikey 563-2071-ND or 563-2069-ND



Both look like possible fits





From: Dave Redfearn 
To: elecraft@mailman.qth.net 
Sent: Wednesday, March 29, 2017 8:42 PM
Subject: [Elecraft] K2 bad encoder?



I just got a used K2 which came from an estate.


Not much info but it looks like it was built in 2000, serial number 02136.




When trying to tune, it looks like the encoder is not working properly.


When tuning clockwise (up) the frequency barely moves even when turning the

knob rapidly.


When tuning counterclockwise (down) the frequency moves a little more but

not much even when turning the knob rapidly.




Other frequency control functions work - step, VFO A/B, band up/down




To me this looks like the encoder is bad.




I do not see any info in the manuals on troubleshooting the encoder.




Is there anything I can test to verify the encoder or do I need to go

directly to Elecraft for a replacement?




Thanks for any help.








73, 

Dave Redfearn

ARS N4ELM  Lafayette, LA


QRL? de N4ELM/qrp 
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Re: [Elecraft] Amplifier thoughts

[Erik Basilier]

Using my KAT500/KPA500 installation, I notice that I avoid using the tuner in 
AUTO mode, because the loud relays distract me when I am tuning around. In 
fact, I tend to disable the KAT500 and turn on the KAT100 in the K3. 

Therefore: A KAT1500 should either have sound absorbent materials built in, or 
else be mounted away from the operating position.

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[Elecraft] K2 bad encoder?

[Dave Redfearn]

I just got a used K2 which came from an estate.

Not much info but it looks like it was built in 2000, serial number 02136.

 

When trying to tune, it looks like the encoder is not working properly.

When tuning clockwise (up) the frequency barely moves even when turning the
knob rapidly.

When tuning counterclockwise (down) the frequency moves a little more but
not much even when turning the knob rapidly.

 

Other frequency control functions work - step, VFO A/B, band up/down

 

To me this looks like the encoder is bad.

 

I do not see any info in the manuals on troubleshooting the encoder.

 

Is there anything I can test to verify the encoder or do I need to go
directly to Elecraft for a replacement?

 

Thanks for any help.

 

 

 

73, 
Dave Redfearn
ARS N4ELM  Lafayette, LA

QRL? de N4ELM/qrp 

 

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[Elecraft] K3/100 + P3 **Update**

[Phil Hystad]

I am posting this ad for a friend, Fred KE7FB, who is reluctantly selling his 
K3+P3.  Fred’s e-mail address is listed below and you can contact him or me 
(Phil) or both of us for any questions on the items listed or photos of the 
equipment.

For Sale:  K3/100 and P3

The complement included in the K3, serial number #6183:

   — K3/100 with standard 2.7 kHz Filter
   — KAT3:K3 ATU Option
   — KXV3A:  RX Ant., IF Out and Xverter Interface Option
   — KFL3A-250-R:   250 Hz, 8-Pole Filter
   — KFL3A-400-R:   400 Hz, 8-Pole Filter
   — KFL3A-1.0K-R:  1 kHz, 8-Pole Filter
   — MH2:  Hand Held microphone for the K3
   — KUSB: Universal Serial Bus Adapter

This K3 (modular kit) is fully assembled and calibrated per Elecraft 
calibration procedures.  It is fully
functional with no dents, no scratches, and no dust or dirt on the cabinet.  
Used only in a non-smoking
environent.

Also, Elecraft documentation for the K3 plus the Fred Cady “Elecraft K3” book.

For Sale:   P3-K Panadapter for the K3

The P3-K, Panadapter for the K3, serial # 1870 is fully assembled and 
completely functional with no
dents, no scratches, and also it has no dust or dirt on it either.  Used only 
in a non-smoking 
environment.

A spiral bound copy of the P3 documentation will be included (the original 
documentation was lost
in transit during move from Oregon to Wisconsin or worse, lost somewhere down 
in the basement
of the house).  So, a bound copy of the full downloaded and printed 
documentation for the P3 is included.

This equipment is offered individually or bundled together for a slight 
discount.

K3:  $2000 inclusive of shipping with insurance to any CONUS address 
destination.
P3:  $450 inclusive of shipping with insurance to any CONUS address destination.

Discounted package of K3+P3:  $2300 inclusive of shipping and insurance to any 
CONUS address destination.

Payment by Paypal direct to Fred Birch (the seller) at fbirc...@gmail.com.

Preference will be given to sales of the bundled K3+P3 but all offers will be 
seriously considered in the
order they are received.

If interested or if you have questions about this offer please contact me off 
list.

Also, I (posting this ad for Fred) can be contacted at this address or with 
Phil’s (K7PEH) address
offline for any additional questions and photos of the equipment.

73, Fred, KE7FB
fbirc...@gmail.com

Posted by Phil, K7PEH
phys...@mac.com

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Re: [Elecraft] K3- padded carrying case

[Bill Frantz]

I have one of her cases for my KX3, which I put in a soft-sided 
suitcase when I fly. She does excellent work.


73 Bill AE6JV

On 3/29/17 at 12:55 PM, markmus...@sbcglobal.net (Mark E. 
Musick) wrote:



Here is the link to Rose's website.
https://www.smugmug.com/gallery/n-mX9LCZ/i-vLrLtL2 She also 
makes a case for the P3 as well as other Elecraft radio equipment.

I have one for the K3 and one for the P3. They will satisfy your
requirements.


---
Bill Frantz| "The only thing we have to   | Periwinkle
(408)356-8506  | fear is fear itself." - FDR  | 16345 
Englewood Ave
www.pwpconsult.com | Inaugural address, 3/4/1933  | Los Gatos, 
CA 95032


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Re: [Elecraft] Amplifier thoughts

[Ron Wilcox]

Idaho is a great place for our hobby. That is where I got my start in the
80's from Don KA7T. Good luck. I am excited about the chatter the last week
or so about our wishes for an amp. Hope it happens. There have been some
great ideas so far.

Today is a good day to have a Great Day!
73   Ron Wilcox KF7ZN

On Wed, Mar 29, 2017 at 4:07 PM, Rick WA6NHC  wrote:

> Or in my case, the use of ladder line (durned HOA infested area) to handle
> the near 20:1 on 160M (better on most other bands) so that the loss is from
> the tuner to the antenna, not the final.
>
> My solution is that I'm moving to a location better suited for antennas,
> far far away in a land called Idaho.  ;-)
>
> Rick wa6nhc
>
>
> On 3/29/2017 11:47 AM, Ron D'Eau Claire wrote:
>
>> An SWR approaching 10:1 means high RF voltages on a coaxial line at the
>> voltage loops and high current flows at the current loops requiring a very
>> heavy-duty transmission line - likely a nitrogen-filled hard line at 1.5 kW
>> or, at the very least, a very heavy Teflon insulated line. In practice, it
>> is usually the voltage breakdown that kills coax.
>>
>> Of course high SWR also means high losses between the amp and the antenna.
>>
>> The power ratings published by coax cable suppliers are based on a low
>> SWR -- typically less than 1.5:1.
>>
>> The bottom line is that going QRO means a more careful design and
>> installation of the entire antenna system.
>>
>> 73, Ron AC7AC
>>
>>
>>
>> -Original Message-
>> From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
>> brian
>> Sent: Tuesday, March 28, 2017 4:31 PM
>> To: elecraft@mailman.qth.net
>> Subject: Re: [Elecraft] Amplifier thoughts
>>
>> KAT500 handles a much wider SWR range (like to about 10:1).
>>
>> Why do you assume people are lucky enough to have antennas with no more
>> than a 3:1 SWR across the ham bands?
>>
>> Yes, higher SWR's require beefed up components but welcome to the real
>> world.
>>
>> 73 de Brian/K3KO
>>
>> __
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>>
>
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Re: [Elecraft] Amplifier thoughts

[Rick WA6NHC]

Or in my case, the use of ladder line (durned HOA infested area) to 
handle the near 20:1 on 160M (better on most other bands) so that the 
loss is from the tuner to the antenna, not the final.


My solution is that I'm moving to a location better suited for antennas, 
far far away in a land called Idaho.  ;-)


Rick wa6nhc


On 3/29/2017 11:47 AM, Ron D'Eau Claire wrote:

An SWR approaching 10:1 means high RF voltages on a coaxial line at the voltage 
loops and high current flows at the current loops requiring a very heavy-duty 
transmission line - likely a nitrogen-filled hard line at 1.5 kW or, at the 
very least, a very heavy Teflon insulated line. In practice, it is usually the 
voltage breakdown that kills coax.

Of course high SWR also means high losses between the amp and the antenna.

The power ratings published by coax cable suppliers are based on a low SWR -- 
typically less than 1.5:1.

The bottom line is that going QRO means a more careful design and installation 
of the entire antenna system.

73, Ron AC7AC



-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of brian
Sent: Tuesday, March 28, 2017 4:31 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Amplifier thoughts

KAT500 handles a much wider SWR range (like to about 10:1).

Why do you assume people are lucky enough to have antennas with no more than a 
3:1 SWR across the ham bands?

Yes, higher SWR's require beefed up components but welcome to the real world.

73 de Brian/K3KO

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Re: [Elecraft] Amplifier thoughts

[Oliver Dröse]

And please do away with the 15 dB amplification limit for all sales 
outside the USA. Nobody else has that rule in place so we should not 
suffer from it. ;-)


73, Olli

Contest, DX & radio projects: http://www.dh8bqa.de


Am 29.03.2017 um 01:00 schrieb Paul Van Dyke:

Ralph Parker said my list.

1500w output, 160 - 6m.
2 inputs.
4  outputs (Manual switching is OK).
Built-in antenna tuner (good for 3:1 SWR).
Reasonably quiet fans.
Separate p/s, or remote control head (space considerations.  :-)

Paul. KB9AVO​

On Mar 28, 2017 4:40 PM, "Ralph Parker"  wrote:


I better post this before I'm too late.

I'd like:
All the features of my KPA500, plus
1500w output, 160 - 6m.
2 inputs.
2 outputs (or more. Manual switching is OK).
Built-in antenna tuner (good for 3:1 SWR).
Reasonably quiet fans.
Separate p/s, or remote control head (space considerations).
(I understand the difficulty of getting high power from the p/s to the
PA.)
I don't expect to carry it around, so weight is not a problem for me.
Expeditions can use the KPA500 :-)

When this amp is available, I'll sell amplifiers Ac and Am and buy one.
I'm keeping my KPA-500!

Ralph, VE7XF

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Re: [Elecraft] Amplifier thoughts

[Ron D'Eau Claire]

Yes, and that's why the SWR measured at the transmitter is lower than the
actual SWR (measured at the antenna) due to the loss in the line. 

My point is that the sort of SWR we might accept at lower powers quickly
becomes impractical at higher powers because of the constraints imposed by
the transmission line. The sort of coaxial line most Hams use, even  the
super low-loss big stuff, simply cannot handle the voltages produced by a
high SWR.

The place to do the matching is at the antenna end of the transmission line.
So how about a weather proofed remote QRO ATU that goes at the antenna end
of the transmission line? As others pointed out such an ATU won't be small
due to the potentially huge voltages and currents involved, it won't be
lightweight and it certainly won't be cheap. 

73, Ron AC7AC

 

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim
Brown
Sent: Wednesday, March 29, 2017 12:11 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Amplifier thoughts

On Wed,3/29/2017 11:47 AM, Ron D'Eau Claire wrote:
> An SWR approaching 10:1 means high RF voltages on a coaxial line at 
> the voltage loops

Remember that the SWR on a transmission line, and thus the loss in the line,
is determined ENTIRELY by the match between the antenna and the line, NOT
between the line and the transmitter.

The SWR measured at the transmitter is a measure of the difference between
the impedance the transmitter WANTS to drive and the impedance of the load
connected to it. If that INDICATED SWR is high, a solid state transmitter
will "throttle itself back" to protect itself, but that's not LOSS. The
function of an antenna tuner is to make the transmitter happy by giving it a
load that it's designed for, so that it can put out its full power.

For example, a long wire antenna of random length might be nowhere near
50 ohms resistive, so must be transformed to 50 ohms resistive so that the
transmitter can put power into it. Likewise, an antenna perfectly matched to
75 ohm coax or 150 ohm twin lead has no excess loss in the line but needs a
matching network to make the transmitter happy.  My high dipoles (at 100 -
140 ft) are fed with 75 ohm coax to minimize the loss in the line.

73, Jim K9YC

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Re: [Elecraft] K3- padded carrying case

[Mark E. Musick]

Dick,
Here is the link to Rose's website.
https://www.smugmug.com/gallery/n-mX9LCZ/i-vLrLtL2 
She also makes a case for the P3 as well as other Elecraft radio equipment.
I have one for the K3 and one for the P3. They will satisfy your
requirements.

73,
Mark Musick, WB9CIF

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
j...@kk9a.com
Sent: Wednesday, March 29, 2017 6:53 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3- padded carrying case

I use a Rose Kopp bag and put that in my hard shell carry-on along with
other accessories. I have traveled to the Caribbean with it multiple times
without issue.

John KK9A

from: RLVZ
Wed Mar 29 13:12:29 EDT 2017

Hi Guys,

Please advise what's currently available in padded equipment or carrying
cases or the K3?  I'd like to the size to meet FAA "carry on"  requirements.
(9x14x22")

Thanks!
Dick- K9OM

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Re: [Elecraft] Amplifier thoughts

[Jim Brown]

On Wed,3/29/2017 11:47 AM, Ron D'Eau Claire wrote:

An SWR approaching 10:1 means high RF voltages on a coaxial line at the voltage 
loops


Remember that the SWR on a transmission line, and thus the loss in the 
line, is determined ENTIRELY by the match between the antenna and the 
line, NOT between the line and the transmitter.


The SWR measured at the transmitter is a measure of the difference 
between the impedance the transmitter WANTS to drive and the impedance 
of the load connected to it. If that INDICATED SWR is high, a solid 
state transmitter will "throttle itself back" to protect itself, but 
that's not LOSS. The function of an antenna tuner is to make the 
transmitter happy by giving it a load that it's designed for, so that it 
can put out its full power.


For example, a long wire antenna of random length might be nowhere near 
50 ohms resistive, so must be transformed to 50 ohms resistive so that 
the transmitter can put power into it. Likewise, an antenna perfectly 
matched to 75 ohm coax or 150 ohm twin lead has no excess loss in the 
line but needs a matching network to make the transmitter happy.  My 
high dipoles (at 100 - 140 ft) are fed with 75 ohm coax to minimize the 
loss in the line.


73, Jim K9YC

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[Elecraft] K3- padded carrying case

[j...@kk9a.com]

I use a Rose Kopp bag and put that in my hard shell carry-on along with
other accessories. I have traveled to the Caribbean with it multiple times
without issue.

John KK9A

from: RLVZ
Wed Mar 29 13:12:29 EDT 2017

Hi Guys,

Please advise what's currently available in padded equipment or carrying
cases or the K3?  I'd like to the size to meet FAA "carry on"  requirements.
(9x14x22")

Thanks!
Dick- K9OM

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Re: [Elecraft] Amplifier thoughts

[Ron D'Eau Claire]

An SWR approaching 10:1 means high RF voltages on a coaxial line at the voltage 
loops and high current flows at the current loops requiring a very heavy-duty 
transmission line - likely a nitrogen-filled hard line at 1.5 kW or, at the 
very least, a very heavy Teflon insulated line. In practice, it is usually the 
voltage breakdown that kills coax.

Of course high SWR also means high losses between the amp and the antenna. 

The power ratings published by coax cable suppliers are based on a low SWR -- 
typically less than 1.5:1.

The bottom line is that going QRO means a more careful design and installation 
of the entire antenna system.  

73, Ron AC7AC



-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of brian
Sent: Tuesday, March 28, 2017 4:31 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Amplifier thoughts

KAT500 handles a much wider SWR range (like to about 10:1).

Why do you assume people are lucky enough to have antennas with no more than a 
3:1 SWR across the ham bands?

Yes, higher SWR's require beefed up components but welcome to the real world.

73 de Brian/K3KO

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Re: [Elecraft] Amplifier thoughts

[John Meade W2XS]

I noticed the frequencies shown on the NXP web site for their reference
circuits:

81.36 MHz
230 MHz
87.5 to 108 MHz

and .

27 MHz!

73,  John W2XS



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http://elecraft.365791.n2.nabble.com/Amplifier-thoughts-tp7628611p7628620.html
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[Elecraft] OT: W0PW is SK

[Ken G Kopp]

Sad to report that Don Hilliard - W0PW ... a long-time
friend ... died on Saturday.  Don was the designer of the
famous NBS Yagi.  See the W0PW page on QRZ,com
for more.

73!

Ken Kopp - K0PP
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Re: [Elecraft] Amplifier thoughts

[Arie Kleingeld PA3A]

Who needs three boxes if it has a switching power supply and the amp 
itself has >90% efficiency?

That would be a nice amp in the best Elecraft 'portable' tradition.

This is the only 1.5kW linear I would consider buying as a replacement 
for my good old Commander.


73,
Arie PA3A

Op 29-3-2017 om 18:17 schreef Phil Hystad:

snip>

If this new 1.5 KW linear (if that is the power) becomes a reality, having it 
come in three
separate boxes may make some sense.  Alternatively, like the Icom PW1, have a
control head that sits on the shack desktop and the main unit containing 
everything
else would be on the floor in a dark corner where it belongs (and, where I had 
my
PW1).

< snip




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Re: [Elecraft] Amplifier thoughts

[Doug Smith]

I cast my ballot for NO internal coupler.  

1) An internal coupler is NOT needed by many who would rather not pay for 
something they don’t need.  Sure, it could be optional but see points 2 and 3.

2) An internal coupler at 1.5 KW as anything beyond a trivial “line flattener” 
will be large.  If the matching range is extended to the 10 : 1 SWR range then 
the components will be *quite* large.  Feeding 1.5 KW into a 5 ohm load with an 
L-Network will require an inductor about the size of a K3S if any sort of Q is 
expected.

3) There exist RF transistors that are built to withstand high power operation 
with really high SWR values.  For example:

http://www.nxp.com/products/rf/rf-power-transistors/rf-broadcast-and-ism/1-600-mhz-broadcast-and-ism/1500-w-cw-over-1.8-500-mhz-50-v-wideband-rf-power-ldmos-transistor:MRF1K50H
 


Surely with such a device (or, better yet, a pair), a 3 : 1 SWR can be 
accommodated with no coupler at all.  Thus, no line flattener needed.

If someone is trying to feed a 43 foot vertical on all bands at 1.5 KW then the 
coupler really should be at the antenna site, not in the shack.  That antenna 
presents a load of about 5 ohms -J500 and the coupler will have to be large at 
1.5 KW.  (This is RF, not DC.  In a high pass L-Net think 18 amps and 9000 peak 
volts with a staggering 600 watts of losses generating heat in that coil.)

As to the amp itself my wish list would include:

1) 1.5 KW ICAS.  (I would accept 1.3 KW but, hey, it’s a wish list.)  Must be 
contest capable, including those crazy RTTY guys.   ;-)

2) Separate light weight power supply.

3) QSK at reasonable speeds.  At least 40 WPM.

4) Multiple antenna outputs, remembered per band; overridable.

5) FULLY integrated with the K3S.  Given proper antenna loads the K3S + KPA1500 
becomes a 1.5 KW transceiver.

6) A remote console setup would be cool.  That way the amp would be just a 
power block that could be set aside, out of the way.  Or, even operated at a 
remote site from the console.  TCP/IP connectivity for the console to power 
block.  

73,
Doug, W7KF
http://www.w7kf.com 


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Re: [Elecraft] K3- padded carrying case

[Ian Kahn]

Dick,

I've heard mention several times on this reflector of people using various
sizes of Pelican case. They are tough, air- and water-tight, well-padded,
and they make sizes that meet FAA carry-on guidelines.

Hope this helps.

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

On Wed, Mar 29, 2017 at 1:12 PM, Dick via Elecraft  wrote:

> Hi Guys,
>
> Please advise what's currently available in padded equipment or carrying
> cases or the K3?  I'd like to the size to meet FAA "carry on"
> requirements.
> (9x14x22")
>
> Thanks!
> Dick- K9OM
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[Elecraft] K3- padded carrying case

[Dick via Elecraft]

Hi Guys,
 
Please advise what's currently available in padded equipment or carrying  
cases or the K3?  I'd like to the size to meet FAA "carry on"  requirements.  
(9x14x22")  
 
Thanks!
Dick- K9OM  
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Re: [Elecraft] Amplifier thoughts

[Phil Hystad]

I used to own the 1 KW Icom PW1 linear amplifier.  It included within its huge 
& heavy
black box the switching power supply and the 3:1 antenna auto-tuner.  I sold 
that
amplifier because my eyes sparkled in delight with a much, much smaller desktop
KPA500 from Elecraft.

If this new 1.5 KW linear (if that is the power) becomes a reality, having it 
come in three
separate boxes may make some sense.  Alternatively, like the Icom PW1, have a
control head that sits on the shack desktop and the main unit containing 
everything
else would be on the floor in a dark corner where it belongs (and, where I had 
my
PW1).

But, being honest, I will not be in the market for a larger amp as 100 watts 
seems
quite a bit for my operations which is 99 percent CW and QRP ops or even 10-watt
QRP ops with my KX2 is a lot of fun.

73, phil, K7PEH



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Re: [Elecraft] KX3 - AFSK RTTY

[Fred Moore]

Keith, I have been on unix for the last 30 years, and fought with
cocoModem for about 3 months, and finally came to the conclusion that it
is not ready for prime time. I would get it working for several weeks,
then it would quit..  I never got it to talk to my logging program even
with applescript, finally I moved to fldigi with logging and rig control
coming from rumlogNG and have never looked back... This gives more modes
than cocoModem supports.. 

I use both a signalink, and a small 7 dollar usb sound card depending on
my location (home/portable).  I could use the existing soundcard in the
mac, but just havn't build up a cable for that to work yet.. 

As others have said, you are only concerned about your tone spacing, not
the exact tones, the other end only sees space and mark tones..

feel free to contact me direct if you want to talk about the issues I had..

fwiw... regards.. Fred

Fred Moore
email: f...@fmeco.com
   f...@safes.com
phone:  321-217-8699

On 3/28/17 8:04 PM, Keith Onishi wrote:
> I have been trying to set up for RTTY operation with KX3 + iMic + cocoaModem 
> on Macbook Pro, but not successful.
> Mode selection on KX3 is AFSK A and cocoaModem setup is matched to the KX3 
> setting.
> RTTY signal received by KX3 appears not around 2125Hz but around 900Hz. So, I 
> set cocoaModem’s mark frequency to 915Hz. With that setting, decoded text 
> appears on the screen. KX3 VFO is properly tuned to the signal, of course.
> When FSK D on KX3, all is same. RTTY signal appears around 900Hz as well.
>
> I found this had been discussed several years ago in the ML, but no change in 
> KX3 specification since then.
> I would like to know if this mark frequency is OK in QSO with other RTTY 
> station.
>
> 73 de JH3SIF, Keith
>
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Re: [Elecraft] Amplifier thoughts

[David Bunte]

John -

I used to live in the world you do... but I now live in a neighborhood
where I can't put up a tower, or even a multiband dipole. My 30' Flag Pole
is OK, and, in fact, my neighbors think it is quite nice looking, but in
order to use it on more than the one band where its unmatched SWR is less
than 3:1, I must use a tuner.

I don't expect to be in the market for an amp that is more capable than my
KPA500, but my guess is that an optional, internal tuner capable of
handling 1500 watts into a 3:1 or lower SWR, would suite quite a few
potential users quite well. That way, someone like you, who does not need a
tuner at all could opt to not order that option.

If Elecraft chooses to market an external tuner capable of handling 1500
watts into a 10:1 SWR, then I hope it is one that could be placed out at
the antenna, and controlled remotely. For some folks, putting such a tuner
in the shack, but out of sight would be equally appealing.

Dave - K9FN

On Wed, Mar 29, 2017 at 7:48 AM, j...@kk9a.com  wrote:

> I guess we live in different worlds. My 10m-20m beams have an SWR <1.2:1
> anywhere in the band. I designed them this way and no luck is involved.
> the SWR is a little higher at the top of the band on my lower band
> antennas but certainly not in the 3:1+ range you are referring to. A 1kw+
> Elecraft solid state amp that could tolerate 2:1 or 2.5:1 with no foldback
> would be so awesome!
>
> John KK9A
>
>
> from: brian alsopb
> Tue Mar 28 19:30:31 EDT 2017
>
> KAT500 handles a much wider SWR range (like to about 10:1).
>
> Why do you assume people are lucky enough to have antennas with no more
> than a 3:1 SWR across the ham bands?
>
> Yes, higher SWR's require beefed up components but welcome to the real
> world.
>
> 73 de Brian/K3KO
>
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[Elecraft] Amplifier thoughts

[j...@kk9a.com]

I guess we live in different worlds. My 10m-20m beams have an SWR <1.2:1
anywhere in the band. I designed them this way and no luck is involved.
the SWR is a little higher at the top of the band on my lower band
antennas but certainly not in the 3:1+ range you are referring to. A 1kw+
Elecraft solid state amp that could tolerate 2:1 or 2.5:1 with no foldback
would be so awesome!

John KK9A


from: brian alsopb
Tue Mar 28 19:30:31 EDT 2017

KAT500 handles a much wider SWR range (like to about 10:1).

Why do you assume people are lucky enough to have antennas with no more
than a 3:1 SWR across the ham bands?

Yes, higher SWR's require beefed up components but welcome to the real
world.

73 de Brian/K3KO

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