Re: [Elecraft] Tuners and spurious responses

[Bob Nielsen, N7XY]

DLW Associates makes a filter which has 40 dB rejection across the 
entire broadcast band.  It is available from DX Engineering.


On 12/22/18 7:20 PM, Al Lorona wrote:

  No, not a null, but a rolloff. When I quoted -40 dB I didn't mean a notch at 
one frequency, but the stopband level reached by the time you get well into the 
broadcast band. So that would be -40 dB on all AM stations below a certain 
frequency.
The K3 is a good receiver, but every receiver has its limits and certainly the 
K3 will suffer once an interfering signal gets above a certain level.
A trap or stub would work, but my point was that it would be unnecessary if 
using a link-coupled tuner. Attenuating a 50 kW station by 40 dB makes it  
sound like a 5 W station.
Al  W6LX




That said, is suppose it IS possible that a tuner/antenna combination
just happened to have a deep null right on the frequency of a nearby
broadcast station



   
__

Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to n...@n7xy.net

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] OT: Need Recommendations for Powered Speaker for KX3 (WU6R)

[Walter Underwood]

I use this $9 stereo audio amp. It runs from a 9-18 V supply and puts out 15 W 
per channel.

https://smile.amazon.com/gp/product/B00C4MT274/ 


I have some cheap Pyle speakers, but you might look for some Radio Shack 
Optimus Pro-X44AV speakers on eBay. Those are small, decent shielded speakers 
from the past.

I wrote up my KX3 amp/speaker set up on my blog.

https://observer.wunderwood.org/2017/03/04/speakers-for-my-elecraft-kx3/ 


wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Dec 22, 2018, at 1:59 PM, Mark Wheeler via Elecraft 
>  wrote:
> 
> While the K3S is in the shop, I setup the KX3 as my temporary base station, 
> but the internal speaker leaves a lot to be desired at higher volume. I 
> connected a cheap set of powered pc speakers to the KX3 but I hear distortion 
> through the powered speakers when transmitting with the KX3 and KPA-100 
> connected to a KPA-500. Has anyone found a high quality powered speaker to 
> connect to the KX3 that doesn’t distort when transmitting? 
> 
> Thanks,
> Mark/WU6R 
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to wun...@wunderwood.org

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 100 Tuner question

[Josh Fiden]

To the original point, there is no difficulty finding a different vendor, there 
are no tooling costs, and producing parts in small quantity is not cost 
prohibitive. 

Some people need to be right. Others want the right answer. Only the latter is 
of interest. 

Enough said. 

73,
Josh W6XU

Sent from my mobile device

> On Dec 22, 2018, at 8:11 PM, Don Wilhelm  wrote:
> 
> Well, if you spread $5K over a projected sales quantity of 100 (there were 
> not of EC2 enclosures sold), then you have a tooling cost of $50 per 
> enclosure.
> Add to that the cost of administrative support, creating web pages, packing 
> and shipping labor, and you have an EC2 enclosure that has to sell for over 
> $150 to produce any profit.  About double the original customer cost of the 
> EC2.
> 
> It is different if you can project selling thousands of the items.
> Enough said.
> 
> 73,
> Don W3FPR
> 
>> On 12/22/2018 10:38 PM, W2xj wrote:
>> You can buy a 3D printer for under $5K and make metal work on an as needed 
>> basis. That is where the auto industry is going.
>> 
>> Sent from my iPhone
>> 
>>> On Dec 22, 2018, at 19:03, Don Wilhelm  wrote:
>>> 
>>> Josh,
>>> 
>>> I may not be up to speed, but there are startup costs for anything.  Those 
>>> costs have to be added to the product cost and for small volumes, it can be 
>>> prohibited.
>>> Entering a CAD file, getting scheduling from a small shop that may have a 
>>> full schedule already can be costly.
>>> 
>>> 73,
>>> Don W3FPR
>>> 
 On 12/22/2018 9:16 PM, Josh Fiden wrote:
 Hi Don,
 
 Sounds like you're not up to speed on 21st century sheet metal fabrication.
 
 Small volume parts like this would be cut on a laser and bent with a CNC 
 press brake. The only setup is loading the programs and there is no 
 tooling. If someone draws the parts using a CAD program like Solid Edge, 
 the resulting 3D models can be utilized directly by the vendor. Even small 
 job shops have laser cutting ability, especially for small gauge material 
 like this.
 
 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 100 Tuner question

[W2xj]

Well no. That $5k could be spread over all the metalwork and greatly reduce 
inventory. 

Sent from my iPhone

> On Dec 22, 2018, at 20:11, Don Wilhelm  wrote:
> 
> Well, if you spread $5K over a projected sales quantity of 100 (there were 
> not of EC2 enclosures sold), then you have a tooling cost of $50 per 
> enclosure.
> Add to that the cost of administrative support, creating web pages, packing 
> and shipping labor, and you have an EC2 enclosure that has to sell for over 
> $150 to produce any profit.  About double the original customer cost of the 
> EC2.
> 
> It is different if you can project selling thousands of the items.
> Enough said.
> 
> 73,
> Don W3FPR
> 
>> On 12/22/2018 10:38 PM, W2xj wrote:
>> You can buy a 3D printer for under $5K and make metal work on an as needed 
>> basis. That is where the auto industry is going.
>> 
>> Sent from my iPhone
>> 
>>> On Dec 22, 2018, at 19:03, Don Wilhelm  wrote:
>>> 
>>> Josh,
>>> 
>>> I may not be up to speed, but there are startup costs for anything.  Those 
>>> costs have to be added to the product cost and for small volumes, it can be 
>>> prohibited.
>>> Entering a CAD file, getting scheduling from a small shop that may have a 
>>> full schedule already can be costly.
>>> 
>>> 73,
>>> Don W3FPR
>>> 
 On 12/22/2018 9:16 PM, Josh Fiden wrote:
 Hi Don,
 
 Sounds like you're not up to speed on 21st century sheet metal fabrication.
 
 Small volume parts like this would be cut on a laser and bent with a CNC 
 press brake. The only setup is loading the programs and there is no 
 tooling. If someone draws the parts using a CAD program like Solid Edge, 
 the resulting 3D models can be utilized directly by the vendor. Even small 
 job shops have laser cutting ability, especially for small gauge material 
 like this.
 
 
>>> __
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:Elecraft@mailman.qth.net
>>> 
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to w...@w2xj.net
>> 
> 
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this em

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 100 Tuner question

[Don Wilhelm]

Well, if you spread $5K over a projected sales quantity of 100 (there 
were not of EC2 enclosures sold), then you have a tooling cost of $50 
per enclosure.
Add to that the cost of administrative support, creating web pages, 
packing and shipping labor, and you have an EC2 enclosure that has to 
sell for over $150 to produce any profit.  About double the original 
customer cost of the EC2.


It is different if you can project selling thousands of the items.
Enough said.

73,
Don W3FPR

On 12/22/2018 10:38 PM, W2xj wrote:

You can buy a 3D printer for under $5K and make metal work on an as needed 
basis. That is where the auto industry is going.

Sent from my iPhone


On Dec 22, 2018, at 19:03, Don Wilhelm  wrote:

Josh,

I may not be up to speed, but there are startup costs for anything.  Those 
costs have to be added to the product cost and for small volumes, it can be 
prohibited.
Entering a CAD file, getting scheduling from a small shop that may have a full 
schedule already can be costly.

73,
Don W3FPR


On 12/22/2018 9:16 PM, Josh Fiden wrote:
Hi Don,

Sounds like you're not up to speed on 21st century sheet metal fabrication.

Small volume parts like this would be cut on a laser and bent with a CNC press 
brake. The only setup is loading the programs and there is no tooling. If 
someone draws the parts using a CAD program like Solid Edge, the resulting 3D 
models can be utilized directly by the vendor. Even small job shops have laser 
cutting ability, especially for small gauge material like this.



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to w...@w2xj.net




__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 100 Tuner question

[W2xj]

You can buy a 3D printer for under $5K and make metal work on an as needed 
basis. That is where the auto industry is going. 

Sent from my iPhone

> On Dec 22, 2018, at 19:03, Don Wilhelm  wrote:
> 
> Josh,
> 
> I may not be up to speed, but there are startup costs for anything.  Those 
> costs have to be added to the product cost and for small volumes, it can be 
> prohibited.
> Entering a CAD file, getting scheduling from a small shop that may have a 
> full schedule already can be costly.
> 
> 73,
> Don W3FPR
> 
>> On 12/22/2018 9:16 PM, Josh Fiden wrote:
>> Hi Don,
>> 
>> Sounds like you're not up to speed on 21st century sheet metal fabrication.
>> 
>> Small volume parts like this would be cut on a laser and bent with a CNC 
>> press brake. The only setup is loading the programs and there is no tooling. 
>> If someone draws the parts using a CAD program like Solid Edge, the 
>> resulting 3D models can be utilized directly by the vendor. Even small job 
>> shops have laser cutting ability, especially for small gauge material like 
>> this.
>> 
>> 
> 
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to w...@w2xj.net

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] Tuners and spurious responses

[Wes Stewart]

Generally speaking, with components of the same Q, an L network will be the 
lowest loss solution to any matching problem. The network Q is set only by the 
two impedances to be matched. (I did once contrived a situation where matching 
the very low R, high C gate impedance of an FET could be done with lower loss 
using a series pair of L networks, but this is unusual.)


In correspondence with Dean Straw 20+ years ago when we were prepping my article 
on ladderline, I pointed out to him that the problem with T networks with three 
variables was that there are an infinite number of solutions, with only one 
giving the lowest loss and some giving huge losses, with the operator being 
clueless. I believe the same would be true with the Match Box.   (By what I'm 
sure must be coincidence, it was shortly after that an ARRL favored author wrote 
article on tuner losses.)


Any rejection due to an antenna matching system is just serendipity and 
depending on it for that purpose is foolhardy, IMHO, of course.


To pick one nit with Scott, a pi-network can be high pass and a tee-network can 
be low pass.


Wes  N7WS



On 12/22/2018 7:21 PM, K9MA wrote:
While I seriously doubt any rejection of nearby frequencies by a tuner is 
likely to have any effect on the K3 receiver,
I'd point out that any tuner configuration other than an L network can provide 
a match over a wide range of Q. One generally tries to tune them for minimum Q 
to minimize losses. If tuned to a high Q, however, both the T and pi networks 
generally will provide some rejection of adjacent frequencies. Just how much 
is impossible to predict, unless you know just how the antenna impedance 
varies with frequency. At far removed frequencies, of course, a T does act 
like a high pass, and a pi like a low pass, but in neither case do they match 
the antenna to 50 Ohms, unless it happens to actually be 50 Ohms at some 
frequency.


That said, is suppose it IS possible that a tuner/antenna combination just 
happened to have a deep null right on the frequency of a nearby broadcast 
station which was causing intermodulation. If that were the case, a more 
reliable solution would be a trap or stub.


73,
Scott K9MA


On 12/22/2018 08:52, Bob McGraw K4TAX wrote:
The Johnson Matchbox configuration is indeed a banpass filter meaning it 
attenuates both above and below the frequency to which it is tuned.    I use 
mine at Field Day to provide attenuation to stations operating both above and 
below the band being used.  The amount of attenuation does vary as it is not 
symmetrical in nature.


Probably you were using a less than optimum balun which had little common 
mode rejection or poor balance.   The best way to check the two 
configurations is to measure the current in each leg of the balanced feed 
line.  Many baluns do not do a good job or making a "balanced" feed.    The 
work of DJ0IP  {see his website} has a lot of information from real field 
measurements on baluns, good ones and bad ones.


73

Bob, K4TAX

On 12/21/2018 11:03 PM, Victor Rosenthal 4X6GP wrote:
I just replaced my single-ended T-network tuner plus balun with a massive 
old Johnson Matchbox. It is very selective, unlike the T network. It is as 
if there is a sharp bandpass filter between the antenna and the rig.


This may be totally imaginary, and there's no easy way to A/B test it, but 
it seems as though the K3 sounds "cleaner" in some sense.
Could it be that since the mixer sees a much narrower spectrum, there are 
fewer spurious responses?


Do those of you who use bandpass filters for SO2R or multi-transmitter 
contesting notice such an effect?


It also seems that the better balance (my antenna system is a dipole fed 
with balanced line) has reduced RF in the shack and possibly local noise 
pickup.




__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] Tuners and spurious responses

[K9MA]

I haven't analyzed them thoroughly, but I can see how a link coupled 
tuner could provide more far out rejection both above and below the 
operating frequency than an L, T, or Pi.


Link coupled tuners can also, of course, be inherently balanced. I've 
never been a fan of using baluns with single-ended tuners to feed 
unmatched balanced antennas, because it's just about impossible to build 
a practical balun that can cover the whole range of possible impedances. 
Open wire can operate with a 10:1 SWR with modest losses, but the 
impedance at the tuner could be anywhere from 45 to 4500 Ohms. The 
problem with link coupled tuners is that tapped coils are cumbersome and 
somewhat dangerous. The differential capacitor in the Johnson Matchbox 
was a way around that, but it was expensive and limited the range of the 
tuner.


73,
Scott K9MA

On 12/22/2018 21:20, Al Lorona wrote:
No, not a null, but a rolloff. When I quoted -40 dB I didn't mean a 
notch at one frequency, but the stopband level reached by the time you 
get well into the broadcast band. So that would be -40 dB on all AM 
stations below a certain frequency.


The K3 is a good receiver, but every receiver has its limits and 
certainly the K3 will suffer once an interfering signal gets above a 
certain level.


A trap or stub would work, but my point was that it would be 
unnecessary if using a link-coupled tuner. Attenuating a 50 kW station 
by 40 dB makes it  sound like a 5 W station.


Al  W6LX




>>> That said, is suppose it IS possible that a tuner/antenna combination
>>> just happened to have a deep null right on the frequency of a nearby
>>> broadcast station





--
Scott  K9MA

k...@sdellington.us

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 100 Tuner question

[Josh Fiden]

Oh come on. Now you're just making things up. 

I just had some structural brackets made. They had 18 holes, laser cut and bent 
from 3/8" thick 304 stainless. They were $45 ea for 13 pcs. Supplier did the 
CAD for me from my pencil sketch. Took him less than 10 minutes, no extra 
charge. 

A little difficult to extrapolate from that example, other than to note the 
very low volume, it's expensive material and slow to cut. 

73
Josh W6XU

Sent from my mobile device

> On Dec 22, 2018, at 7:03 PM, Don Wilhelm  wrote:
> 
> Josh,
> 
> I may not be up to speed, but there are startup costs for anything.  Those 
> costs have to be added to the product cost and for small volumes, it can be 
> prohibited.
> Entering a CAD file, getting scheduling from a small shop that may have a 
> full schedule already can be costly.
> 
> 73,
> Don W3FPR
> 
>> On 12/22/2018 9:16 PM, Josh Fiden wrote:
>> Hi Don,
>> 
>> Sounds like you're not up to speed on 21st century sheet metal fabrication.
>> 
>> Small volume parts like this would be cut on a laser and bent with a CNC 
>> press brake. The only setup is loading the programs and there is no tooling. 
>> If someone draws the parts using a CAD program like Solid Edge, the 
>> resulting 3D models can be utilized directly by the vendor. Even small job 
>> shops have laser cutting ability, especially for small gauge material like 
>> this.
>> 
>> 
> 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] Tuners and spurious responses

[Al Lorona]

 No, not a null, but a rolloff. When I quoted -40 dB I didn't mean a notch at 
one frequency, but the stopband level reached by the time you get well into the 
broadcast band. So that would be -40 dB on all AM stations below a certain 
frequency.
The K3 is a good receiver, but every receiver has its limits and certainly the 
K3 will suffer once an interfering signal gets above a certain level.
A trap or stub would work, but my point was that it would be unnecessary if 
using a link-coupled tuner. Attenuating a 50 kW station by 40 dB makes it  
sound like a 5 W station.
Al  W6LX


   
>>> That said, is suppose it IS possible that a tuner/antenna combination 
>>> just happened to have a deep null right on the frequency of a nearby 
>>> broadcast station  



  
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] Elecraft CW Net Announcement

[kevinr]

Good Evening,

   The full moon rose over the horizon as I was eating dinner. Then it 
disappeared into the dense clouds.  I thought it was going to be clear 
enough to see the Christmas comet but those clouds got in the way.  
Maybe next week when the moon is less bright and farther along in its 
orbit.


   It's official, today was two seconds longer than yesterday. That 
means spring can't be too far off.  The sun has been blank 60% of 2018.  
Next year should be close to the bottom of this cycle with a greater 
than 60% blank sun.  The good thing is the solar cycle rises more 
rapidly than it falls.  2020 should be better than fair.


  A doe caught my attention early today.  She had been browsing her way 
past the window when something made her twitch an ear.  I watched her 
for a while until I saw one of my trees had a tail. The other side of 
the tree had a yearling's head.  Strange tree.


Please join us tomorrow on:

14050 kHz at 2200z Sunday  (2 PM PST Sunday)
 7047 kHz at z Monday  (4 PM PST Sunday)

73,

   Kevin. KD5ONS

-

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 100 Tuner question

[Don Wilhelm]

Josh,

I may not be up to speed, but there are startup costs for anything.  
Those costs have to be added to the product cost and for small volumes, 
it can be prohibited.
Entering a CAD file, getting scheduling from a small shop that may have 
a full schedule already can be costly.


73,
Don W3FPR

On 12/22/2018 9:16 PM, Josh Fiden wrote:

Hi Don,

Sounds like you're not up to speed on 21st century sheet metal fabrication.

Small volume parts like this would be cut on a laser and bent with a CNC press 
brake. The only setup is loading the programs and there is no tooling. If 
someone draws the parts using a CAD program like Solid Edge, the resulting 3D 
models can be utilized directly by the vendor. Even small job shops have laser 
cutting ability, especially for small gauge material like this.




__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] Tuners and spurious responses

[K9MA]

While I seriously doubt any rejection of nearby frequencies by a tuner 
is likely to have any effect on the K3 receiver,
I'd point out that any tuner configuration other than an L network can 
provide a match over a wide range of Q. One generally tries to tune them 
for minimum Q to minimize losses. If tuned to a high Q, however, both 
the T and pi networks generally will provide some rejection of adjacent 
frequencies. Just how much is impossible to predict, unless you know 
just how the antenna impedance varies with frequency. At far removed 
frequencies, of course, a T does act like a high pass, and a pi like a 
low pass, but in neither case do they match the antenna to 50 Ohms, 
unless it happens to actually be 50 Ohms at some frequency.


That said, is suppose it IS possible that a tuner/antenna combination 
just happened to have a deep null right on the frequency of a nearby 
broadcast station which was causing intermodulation. If that were the 
case, a more reliable solution would be a trap or stub.


73,
Scott K9MA


On 12/22/2018 08:52, Bob McGraw K4TAX wrote:
The Johnson Matchbox configuration is indeed a banpass filter meaning 
it attenuates both above and below the frequency to which it is 
tuned.    I use mine at Field Day to provide attenuation to stations 
operating both above and below the band being used.  The amount of 
attenuation does vary as it is not symmetrical in nature.


Probably you were using a less than optimum balun which had little 
common mode rejection or poor balance.   The best way to check the two 
configurations is to measure the current in each leg of the balanced 
feed line.  Many baluns do not do a good job or making a "balanced" 
feed.    The work of DJ0IP  {see his website} has a lot of information 
from real field measurements on baluns, good ones and bad ones.


73

Bob, K4TAX

On 12/21/2018 11:03 PM, Victor Rosenthal 4X6GP wrote:
I just replaced my single-ended T-network tuner plus balun with a 
massive old Johnson Matchbox. It is very selective, unlike the T 
network. It is as if there is a sharp bandpass filter between the 
antenna and the rig.


This may be totally imaginary, and there's no easy way to A/B test 
it, but it seems as though the K3 sounds "cleaner" in some sense.
Could it be that since the mixer sees a much narrower spectrum, there 
are fewer spurious responses?


Do those of you who use bandpass filters for SO2R or 
multi-transmitter contesting notice such an effect?


It also seems that the better balance (my antenna system is a dipole 
fed with balanced line) has reduced RF in the shack and possibly 
local noise pickup.




__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to k...@sdellington.us



--
Scott  K9MA

k...@sdellington.us

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 100 Tuner question

[Josh Fiden]

Hi Don,

Sounds like you're not up to speed on 21st century sheet metal fabrication. 

Small volume parts like this would be cut on a laser and bent with a CNC press 
brake. The only setup is loading the programs and there is no tooling. If 
someone draws the parts using a CAD program like Solid Edge, the resulting 3D 
models can be utilized directly by the vendor. Even small job shops have laser 
cutting ability, especially for small gauge material like this. 

Hard tooling would only be used in high volume (thousands at least) for a very 
cost sensitive project. 

I'm not familiar with methods prior to the '80s, but even back then this would 
be done on a turret punch press. You'd only need tools for oddball shapes the 
vendor didn't have, and those are fairly inexpensive. For small runs you'd have 
the setup time of loading tools into the turret, but as noted, that no longer 
exists. 

73,
Josh W6XU

Sent from my mobile device

> On Dec 22, 2018, at 5:15 PM, Don Wilhelm  wrote:
> 
> Josh,
> 
> The stuff needed to punch the panels out of a piece of aluminum and put the 
> holes in the right place.  The tools needed to bend the panels at the right 
> places.  That stuff can cost thousands of dollars.
> It is not the same as making a one-off copy using hand marked pieces.
> 
> If you have ever studied what it takes to make production quantities of a 
> device, then you would understand that it takes specialized tools that can be 
> quite costly.
> 
> In my small custom woodworking shop we usually went the inexpensive way by 
> making jigs and other pattern tools, but doing even that costs money.
> 
> 73,
> Don W3FPR
> 
>> On 12/22/2018 7:35 PM, Josh Fiden wrote:
>> What tooling?
>> 73
>> Josh W6XU
>> 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 100 Tuner question

[Gary]

Or if someone would publish the files required for 3D printing...

Then the builder can opt print his own or not. The costs are shifted to a 
spread out model.  Finding someone to print something for a reasonable fee is 
becoming relatively easy.

Just Thinking Out Loud, 73,
Joe kk0sd

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of W2xj
Sent: Saturday, December 22, 2018 7:51 PM
To: donw...@embarqmail.com
Cc: Elecraft Reflector 
Subject: Re: [Elecraft] K2 100 Tuner question

I wonder if 3D printing would be cost effective. 

Sent from my iPhone

> On Dec 22, 2018, at 17:15, Don Wilhelm  wrote:
> 
> Josh,
> 
> The stuff needed to punch the panels out of a piece of aluminum and put the 
> holes in the right place.  The tools needed to bend the panels at the right 
> places.  That stuff can cost thousands of dollars.
> It is not the same as making a one-off copy using hand marked pieces.
> 
> If you have ever studied what it takes to make production quantities of a 
> device, then you would understand that it takes specialized tools that can be 
> quite costly.
> 
> In my small custom woodworking shop we usually went the inexpensive way by 
> making jigs and other pattern tools, but doing even that costs money.
> 
> 73,
> Don W3FPR
> 
>> On 12/22/2018 7:35 PM, Josh Fiden wrote:
>> What tooling?
>> 73
>> Josh W6XU
>> Sent from my mobile device
>>> On Dec 22, 2018, at 3:11 PM, Don Wilhelm  wrote:
>>> 
>>> All,
>>> 
>>> Once again, the EC2 was discontinued because the metal supplier is no 
>>> longer in business.
>>> To find another vendor is out of the question.  The startup and tooling 
>>> costs would be excessively high for the projected quantities involved.
>>> How many EC2 enclosure could Elecraft sell at a price point of $250 or more 
>>> per unit (my guess, not anything official from Elecraft)?
>>> It was not a high sales volume unit where such startup and tooling costs 
>>> could be swamped out by the sales volumes.
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net Please help support this email 
> list: http://www.qsl.net/donate.html Message delivered to 
> w...@w2xj.net
> 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html Message 
delivered to gary_mayfi...@hotmail.com
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 100 Tuner question

[W2xj]

I wonder if 3D printing would be cost effective. 

Sent from my iPhone

> On Dec 22, 2018, at 17:15, Don Wilhelm  wrote:
> 
> Josh,
> 
> The stuff needed to punch the panels out of a piece of aluminum and put the 
> holes in the right place.  The tools needed to bend the panels at the right 
> places.  That stuff can cost thousands of dollars.
> It is not the same as making a one-off copy using hand marked pieces.
> 
> If you have ever studied what it takes to make production quantities of a 
> device, then you would understand that it takes specialized tools that can be 
> quite costly.
> 
> In my small custom woodworking shop we usually went the inexpensive way by 
> making jigs and other pattern tools, but doing even that costs money.
> 
> 73,
> Don W3FPR
> 
>> On 12/22/2018 7:35 PM, Josh Fiden wrote:
>> What tooling?
>> 73
>> Josh W6XU
>> Sent from my mobile device
>>> On Dec 22, 2018, at 3:11 PM, Don Wilhelm  wrote:
>>> 
>>> All,
>>> 
>>> Once again, the EC2 was discontinued because the metal supplier is no 
>>> longer in business.
>>> To find another vendor is out of the question.  The startup and tooling 
>>> costs would be excessively high for the projected quantities involved.
>>> How many EC2 enclosure could Elecraft sell at a price point of $250 or more 
>>> per unit (my guess, not anything official from Elecraft)?
>>> It was not a high sales volume unit where such startup and tooling costs 
>>> could be swamped out by the sales volumes.
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to w...@w2xj.net
> 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 100 Tuner question

[Don Wilhelm]

Josh,

The stuff needed to punch the panels out of a piece of aluminum and put 
the holes in the right place.  The tools needed to bend the panels at 
the right places.  That stuff can cost thousands of dollars.

It is not the same as making a one-off copy using hand marked pieces.

If you have ever studied what it takes to make production quantities of 
a device, then you would understand that it takes specialized tools that 
can be quite costly.


In my small custom woodworking shop we usually went the inexpensive way 
by making jigs and other pattern tools, but doing even that costs money.


73,
Don W3FPR

On 12/22/2018 7:35 PM, Josh Fiden wrote:

What tooling?

73
Josh W6XU

Sent from my mobile device


On Dec 22, 2018, at 3:11 PM, Don Wilhelm  wrote:

All,

Once again, the EC2 was discontinued because the metal supplier is no longer in 
business.
To find another vendor is out of the question.  The startup and tooling costs 
would be excessively high for the projected quantities involved.
How many EC2 enclosure could Elecraft sell at a price point of $250 or more per 
unit (my guess, not anything official from Elecraft)?
It was not a high sales volume unit where such startup and tooling costs could 
be swamped out by the sales volumes.

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] OT: Need Recommendations for Powered Speaker for KX3 (WU6R)

[Macy monkeys]

I drive the aux port of my Sangean WR-11 wood cabinet tabletop radio. Sounds 
fantastic. Best speaker I've found yet; tons of audio, no distortion, no RFI.

John K7FD

> On Dec 22, 2018, at 3:03 PM, Jim Brown  wrote:
> 
>> On 12/22/2018 2:08 PM, Bob McGraw K4TAX wrote:
>> Sounds like RF getting into the audio amps of the speakers.  May require 
>> ferrite beads with a couple of turns thorough the beads on the audio and 
>> power cables.
> 
> Powered speakers are historically very RFI susceptible, even high priced ones 
> made for pro use and for the high futility world. I would also be quite 
> concerned about RF noise produced by their power supplies, which are almost 
> all switchers.
> 
> 73, Jim
> 
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to macymonk...@charter.net

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] OT: Need Recommendations for Powered Speaker for KX3 (WU6R)

[Mark Wheeler via Elecraft]

Don,
Thanks, I’ll give the WMR speakers a try.

73, Mark

> On Dec 22, 2018, at 6:15 PM, Don Wilhelm  wrote:
> 
> Mark,
> 
> Many computer speakers are quite sensitive to RF and cause that problem.
> At my 100 watt power level, I have found the West Mountain Radio COMspkrs are 
> immune to that problem (they are shielded).  I don't know what might happen 
> at power levels above 100 watts.
> 
> The only thing I don't like about them is the bright blue LED.  I have mine 
> covered with tape.
> 
> 73,
> Don W3FPR
> 
>> On 12/22/2018 4:59 PM, Mark Wheeler via Elecraft wrote:
>> While the K3S is in the shop, I setup the KX3 as my temporary base station, 
>> but the internal speaker leaves a lot to be desired at higher volume. I 
>> connected a cheap set of powered pc speakers to the KX3 but I hear 
>> distortion through the powered speakers when transmitting with the KX3 and 
>> KPA-100 connected to a KPA-500. Has anyone found a high quality powered 
>> speaker to connect to the KX3 that doesn’t distort when transmitting?

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 100 Tuner question

[Josh Fiden]

What tooling?

73
Josh W6XU

Sent from my mobile device

> On Dec 22, 2018, at 3:11 PM, Don Wilhelm  wrote:
> 
> All,
> 
> Once again, the EC2 was discontinued because the metal supplier is no longer 
> in business.
> To find another vendor is out of the question.  The startup and tooling costs 
> would be excessively high for the projected quantities involved.
> How many EC2 enclosure could Elecraft sell at a price point of $250 or more 
> per unit (my guess, not anything official from Elecraft)?
> It was not a high sales volume unit where such startup and tooling costs 
> could be swamped out by the sales volumes.
> 
> 73,
> Don W3FPR
> 
>> On 12/22/2018 4:44 PM, Doug Person wrote:
>>> On 12/22/2018 2:30 PM, Rick Wheeler wrote:
>>> I always wondered why Elecraft discontinued the EC2 enclosure. Even the mod 
>>> to use the EC2 enclosure with the 100 watt amp and tuner was unofficial as 
>>> I understood. I built the 100 amp and tuner in the EC2 as per the 
>>> instructions to mate with the K2. Maybe the demand was not there but neat 
>>> setup and works great!
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to j...@voodoolab.com

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] Fwd: OT: Need Recommendations for Powered Speaker for KX3 (WU6R)

[Doug Person]

I'm glad they (West Mountain speakers) worked for you. Mine were just 
about as bad as the cheap $10 pair they replaced. Then they just died.


Computer speaks are always hit or miss. I've found Logitech, even the 
cheap ones, are decent. But there's only so much any tiny amp can 
handle. I actually found a pair of super efficient non-amplified 
speakers meant to work off a headphone output. Not a lot of volume. But 
a lot more than the built-in.


I also built a small speaker enclosure using a plastic utility box with 
2 1.25" Mylar speakers driven by one of the now highly common tiny 
amplifier boards. I shielded and beaded everything. Works great and a 
fun little project.


73, Doug -- KJ0F

On 12/22/2018 4:20 PM, Ken G Kopp wrote:

I can't speak more highly about my two pairs of West Mountain speakers.

73 !

Ken G Kopp

-- Forwarded message -
From: Don Wilhelm 
Date: Sat, Dec 22, 2018, 16:15
Subject: Re: [Elecraft] OT: Need Recommendations for Powered Speaker for
KX3 (WU6R)
To: Mark Wheeler , 


Mark,

Many computer speakers are quite sensitive to RF and cause that problem.
At my 100 watt power level, I have found the West Mountain Radio
COMspkrs are immune to that problem (they are shielded).  I don't know
what might happen at power levels above 100 watts.

The only thing I don't like about them is the bright blue LED.  I have
mine covered with tape.

73,
Don W3FPR

On 12/22/2018 4:59 PM, Mark Wheeler via Elecraft wrote:

While the K3S is in the shop, I setup the KX3 as my temporary base

station, but the internal speaker leaves a lot to be desired at higher
volume. I connected a cheap set of powered pc speakers to the KX3 but I
hear distortion through the powered speakers when transmitting with the KX3
and KPA-100 connected to a KPA-500. Has anyone found a high quality powered
speaker to connect to the KX3 that doesn’t distort when transmitting?
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to kengk...@gmail.com
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to d...@kj0f.com

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] New Transmitting Choke Cookbook

[Jim Brown]

I've finally completed a year's worth of work on a completely new 
Cookbook. It covers use of both the newer 4-in o.d. cores and the old 
standard 2.4-in diameter cores, both #31 material, made by Fair-Rite. 
Merry Christmas!


http://k9yc.com/2018Cookbook.pdf

73, Jim K9YC

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] OT: Need Recommendations for Powered Speaker for KX3 (WU6R)

[Mark Wheeler via Elecraft]

Thanks Bill.
Mark

Sent from my iPad

> On Dec 22, 2018, at 5:25 PM, Nr4c  wrote:
> 
> I use West Mountain Radio Comm zspeakers with my K3(S) and should work fine 
> with KX3. 
> 
> Sent from my iPhone
> ...nr4c. bill
> 
> 
>> On Dec 22, 2018, at 5:19 PM, Michael Blake via Elecraft 
>>  wrote:
>> 
>> My Bose Color Soundlink speaker works really well with my KX3.  No 
>> distortion, no RF even when driving the KPA500 with the KX3.
>> 
>> 
>> Michael Blake
>> k9...@mac.com 
>> 
>> 
>> 
>> 
>> 
>> 
>>> On Dec 22, 2018, at 5:08 PM, Bob McGraw K4TAX  wrote:
>>> 
>>> Sounds like RF getting into the audio amps of the speakers.  May require 
>>> ferrite beads with a couple of turns thorough the beads on the audio and 
>>> power cables. 
>>> 
>>> Bob, K4TAX
>>> 
>>> 
>>> Sent from my iPhone
>>> 
 On Dec 22, 2018, at 3:59 PM, Mark Wheeler via Elecraft 
 mailto:elecraft@mailman.qth.net>> wrote:
 
 While the K3S is in the shop, I setup the KX3 as my temporary base 
 station, but the internal speaker leaves a lot to be desired at higher 
 volume. I connected a cheap set of powered pc speakers to the KX3 but I 
 hear distortion through the powered speakers when transmitting with the 
 KX3 and KPA-100 connected to a KPA-500. Has anyone found a high quality 
 powered speaker to connect to the KX3 that doesn’t distort when 
 transmitting? 
 
 Thanks,
 Mark/WU6R 
 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 Post: mailto:Elecraft@mailman.qth.net
 
 This list hosted by: http://www.qsl.net
 Please help support this email list: http://www.qsl.net/donate.html
 Message delivered to rmcg...@blomand.net 
>>> 
>>> 
>>> __
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft 
>>> 
>>> Help: http://mailman.qth.net/mmfaq.htm 
>>> Post: mailto:Elecraft@mailman.qth.net 
>>> 
>>> This list hosted by: http://www.qsl.net 
>>> Please help support this email list: http://www.qsl.net/donate.html 
>>> 
>>> Message delivered to k9...@mac.com 
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to n...@widomaker.com
> 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] K3 frequency offset problem

[Chuck Guenther]

On a couple of occasions, I've noticed that my K3 display has been 
offset by approximately 0.90 Khz when operating CW.  Both times, I found 
that when I tuned my K3 to a signal peak in the P3 display,
there was no sound in the headphones.  When I tuned 900 Hz past the peak 
I found the signal.  This was a little embarrassing last night, because 
I issued a spot via DX Summit that was 900 Hz off from

later spots on the same station put out by others.

I found that the error could be corrected by turning the sub receiver 
on, putting the K3 in split mode, then going out of split and turning 
off the sub receiver.  This problem may be associated with my
habit of putting one VFO in CW mode, and the other in Data mode at one 
of the FT8 frequencies.  The problem seems to come up when I turn off 
the WSJT-x program.


My K3 has the latest firmware installed (5.66); I am using DXLab's 
Commander v. 13.8.1, and WSJT-x v. 2.0.0 .


I'd appreciate any hints about what I may be doing wrong.

Thanks & 73,

Chuck Guenther
K3 s/n 1061 (upgraded to at least an S-)

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S - Win 10 Pro USB Audio Codec Issue

[Don Wilhelm]

Marty,

Have you tried unplugging the USB cable, then plugging it back in.
Windows should recognize and activate the USB Audio CODEC.
Also make sure "Show Hidden Devices" is checked.

73,
Don W3FPR

On 12/22/2018 4:14 PM, N1VH wrote:

My radio club just replaced our pc's and we are now running Win10 Pro.   The
K3S is recognized (com port and USB Controller) and works well with N1MM,
HRD and WSJT-X (CAT control).  However, the USB Audio Codec is not being
loaded for the radio.  Windows does not recognize the K3S sound card and as
a result, WSJT-X does not have USB codec options in the audio settings.   I
have done a Windows reset / reload and downloaded the latest FTDI drivers.
We had no issue running the K3S via USB under Win 10 basic on our old pc's.
(K3S is configured correctly - Rs232 = 'USB' and Mic Set = 'line in'.)

I know this was an issue earlier this year when MS pushed out a Win10
update.  I have searched the forums, but have not seen any fixes other than
what I have already tried.   Does anyone have a suggestion as to how to get
the USB Audio Codec to load in the Win 10 Pro  'device manager - sound,
video and game controllers'?

Thanks.
Marty - N1VH



--
Sent from: http://elecraft.365791.n2.nabble.com/
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to donw...@embarqmail.com


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] Fwd: OT: Need Recommendations for Powered Speaker for KX3 (WU6R)

[Ken G Kopp]

I can't speak more highly about my two pairs of West Mountain speakers.

73 !

Ken G Kopp

-- Forwarded message -
From: Don Wilhelm 
Date: Sat, Dec 22, 2018, 16:15
Subject: Re: [Elecraft] OT: Need Recommendations for Powered Speaker for
KX3 (WU6R)
To: Mark Wheeler , 


Mark,

Many computer speakers are quite sensitive to RF and cause that problem.
At my 100 watt power level, I have found the West Mountain Radio
COMspkrs are immune to that problem (they are shielded).  I don't know
what might happen at power levels above 100 watts.

The only thing I don't like about them is the bright blue LED.  I have
mine covered with tape.

73,
Don W3FPR

On 12/22/2018 4:59 PM, Mark Wheeler via Elecraft wrote:
> While the K3S is in the shop, I setup the KX3 as my temporary base
station, but the internal speaker leaves a lot to be desired at higher
volume. I connected a cheap set of powered pc speakers to the KX3 but I
hear distortion through the powered speakers when transmitting with the KX3
and KPA-100 connected to a KPA-500. Has anyone found a high quality powered
speaker to connect to the KX3 that doesn’t distort when transmitting?
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to kengk...@gmail.com
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] OT: Need Recommendations for Powered Speaker for KX3 (WU6R)

[Don Wilhelm]

Mark,

Many computer speakers are quite sensitive to RF and cause that problem.
At my 100 watt power level, I have found the West Mountain Radio 
COMspkrs are immune to that problem (they are shielded).  I don't know 
what might happen at power levels above 100 watts.


The only thing I don't like about them is the bright blue LED.  I have 
mine covered with tape.


73,
Don W3FPR

On 12/22/2018 4:59 PM, Mark Wheeler via Elecraft wrote:

While the K3S is in the shop, I setup the KX3 as my temporary base station, but 
the internal speaker leaves a lot to be desired at higher volume. I connected a 
cheap set of powered pc speakers to the KX3 but I hear distortion through the 
powered speakers when transmitting with the KX3 and KPA-100 connected to a 
KPA-500. Has anyone found a high quality powered speaker to connect to the KX3 
that doesn’t distort when transmitting?

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 100 Tuner question

[Don Wilhelm]

All,

Once again, the EC2 was discontinued because the metal supplier is no 
longer in business.
To find another vendor is out of the question.  The startup and tooling 
costs would be excessively high for the projected quantities involved.
How many EC2 enclosure could Elecraft sell at a price point of $250 or 
more per unit (my guess, not anything official from Elecraft)?
It was not a high sales volume unit where such startup and tooling costs 
could be swamped out by the sales volumes.


73,
Don W3FPR

On 12/22/2018 4:44 PM, Doug Person wrote:


On 12/22/2018 2:30 PM, Rick Wheeler wrote:
I always wondered why Elecraft discontinued the EC2 enclosure. Even 
the mod to use the EC2 enclosure with the 100 watt amp and tuner was 
unofficial as I understood. I built the 100 amp and tuner in the EC2 
as per the instructions to mate with the K2. Maybe the demand was not 
there but neat setup and works great!

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] OT: Need Recommendations for Powered Speaker for KX3 (WU6R)

[Jim Brown]

On 12/22/2018 2:08 PM, Bob McGraw K4TAX wrote:

Sounds like RF getting into the audio amps of the speakers.  May require 
ferrite beads with a couple of turns thorough the beads on the audio and power 
cables.


Powered speakers are historically very RFI susceptible, even high priced 
ones made for pro use and for the high futility world. I would also be 
quite concerned about RF noise produced by their power supplies, which 
are almost all switchers.


73, Jim

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] OT: Need Recommendations for Powered Speaker for KX3 (WU6R)

[Bob McGraw K4TAX]

Depends largely with RF environment.  Due to location of antenna and station, a 
strong RF field may exist at the station location.  Separation between the two 
is our friend.  

Bob, K4TAX


Sent from my iPhone

> On Dec 22, 2018, at 4:25 PM, Nr4c  wrote:
> 
> I use West Mountain Radio Comm zspeakers with my K3(S) and should work fine 
> with KX3. 
> 
> Sent from my iPhone
> ...nr4c. bill
> 
> 
>> On Dec 22, 2018, at 5:19 PM, Michael Blake via Elecraft 
>>  wrote:
>> 
>> My Bose Color Soundlink speaker works really well with my KX3.  No 
>> distortion, no RF even when driving the KPA500 with the KX3.
>> 
>> 
>> Michael Blake
>> k9...@mac.com 
>> 
>> 
>> 
>> 
>> 
>> 
>>> On Dec 22, 2018, at 5:08 PM, Bob McGraw K4TAX  wrote:
>>> 
>>> Sounds like RF getting into the audio amps of the speakers.  May require 
>>> ferrite beads with a couple of turns thorough the beads on the audio and 
>>> power cables. 
>>> 
>>> Bob, K4TAX
>>> 
>>> 
>>> Sent from my iPhone
>>> 
 On Dec 22, 2018, at 3:59 PM, Mark Wheeler via Elecraft 
 mailto:elecraft@mailman.qth.net>> wrote:
 
 While the K3S is in the shop, I setup the KX3 as my temporary base 
 station, but the internal speaker leaves a lot to be desired at higher 
 volume. I connected a cheap set of powered pc speakers to the KX3 but I 
 hear distortion through the powered speakers when transmitting with the 
 KX3 and KPA-100 connected to a KPA-500. Has anyone found a high quality 
 powered speaker to connect to the KX3 that doesn’t distort when 
 transmitting? 
 
 Thanks,
 Mark/WU6R 
 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.htm
 Post: mailto:Elecraft@mailman.qth.net
 
 This list hosted by: http://www.qsl.net
 Please help support this email list: http://www.qsl.net/donate.html
 Message delivered to rmcg...@blomand.net 
>>> 
>>> 
>>> __
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft 
>>> 
>>> Help: http://mailman.qth.net/mmfaq.htm 
>>> Post: mailto:Elecraft@mailman.qth.net 
>>> 
>>> This list hosted by: http://www.qsl.net 
>>> Please help support this email list: http://www.qsl.net/donate.html 
>>> 
>>> Message delivered to k9...@mac.com 
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to n...@widomaker.com
> 
> 


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] OT: Need Recommendations for Powered Speaker for KX3 (WU6R)

[Nr4c]

I use West Mountain Radio Comm zspeakers with my K3(S) and should work fine 
with KX3. 

Sent from my iPhone
...nr4c. bill


> On Dec 22, 2018, at 5:19 PM, Michael Blake via Elecraft 
>  wrote:
> 
> My Bose Color Soundlink speaker works really well with my KX3.  No 
> distortion, no RF even when driving the KPA500 with the KX3.
> 
> 
> Michael Blake
> k9...@mac.com 
> 
> 
> 
> 
> 
> 
>> On Dec 22, 2018, at 5:08 PM, Bob McGraw K4TAX  wrote:
>> 
>> Sounds like RF getting into the audio amps of the speakers.  May require 
>> ferrite beads with a couple of turns thorough the beads on the audio and 
>> power cables. 
>> 
>> Bob, K4TAX
>> 
>> 
>> Sent from my iPhone
>> 
>>> On Dec 22, 2018, at 3:59 PM, Mark Wheeler via Elecraft 
>>> mailto:elecraft@mailman.qth.net>> wrote:
>>> 
>>> While the K3S is in the shop, I setup the KX3 as my temporary base station, 
>>> but the internal speaker leaves a lot to be desired at higher volume. I 
>>> connected a cheap set of powered pc speakers to the KX3 but I hear 
>>> distortion through the powered speakers when transmitting with the KX3 and 
>>> KPA-100 connected to a KPA-500. Has anyone found a high quality powered 
>>> speaker to connect to the KX3 that doesn’t distort when transmitting? 
>>> 
>>> Thanks,
>>> Mark/WU6R 
>>> __
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:Elecraft@mailman.qth.net
>>> 
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to rmcg...@blomand.net 
>> 
>> 
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft 
>> 
>> Help: http://mailman.qth.net/mmfaq.htm 
>> Post: mailto:Elecraft@mailman.qth.net 
>> 
>> This list hosted by: http://www.qsl.net 
>> Please help support this email list: http://www.qsl.net/donate.html 
>> 
>> Message delivered to k9...@mac.com 
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to n...@widomaker.com

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] Fw1: elecraft

[CHRISTOP PATTERSON]

http://chloeknows.pw/topics/alis99923gh.php/minicart.html?244=sxudpimm&845=935886&ovqhvq=4890
 
http://chloeknows.pw/topics/alis99923gh.php/minicart.html?244=sxudpimm&845=935886&ovqhvq=4890


















































__
Ava Lindsey
Dear Readers
Langdon fought the urge to end it right there
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] OT: Need Recommendations for Powered Speaker for KX3 (WU6R)

[Michael Blake via Elecraft]

My Bose Color Soundlink speaker works really well with my KX3.  No distortion, 
no RF even when driving the KPA500 with the KX3.


Michael Blake
k9...@mac.com 






> On Dec 22, 2018, at 5:08 PM, Bob McGraw K4TAX  wrote:
> 
> Sounds like RF getting into the audio amps of the speakers.  May require 
> ferrite beads with a couple of turns thorough the beads on the audio and 
> power cables. 
> 
> Bob, K4TAX
> 
> 
> Sent from my iPhone
> 
>> On Dec 22, 2018, at 3:59 PM, Mark Wheeler via Elecraft 
>> mailto:elecraft@mailman.qth.net>> wrote:
>> 
>> While the K3S is in the shop, I setup the KX3 as my temporary base station, 
>> but the internal speaker leaves a lot to be desired at higher volume. I 
>> connected a cheap set of powered pc speakers to the KX3 but I hear 
>> distortion through the powered speakers when transmitting with the KX3 and 
>> KPA-100 connected to a KPA-500. Has anyone found a high quality powered 
>> speaker to connect to the KX3 that doesn’t distort when transmitting? 
>> 
>> Thanks,
>> Mark/WU6R 
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to rmcg...@blomand.net 
> 
> 
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft 
> 
> Help: http://mailman.qth.net/mmfaq.htm 
> Post: mailto:Elecraft@mailman.qth.net 
> 
> This list hosted by: http://www.qsl.net 
> Please help support this email list: http://www.qsl.net/donate.html 
> 
> Message delivered to k9...@mac.com 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] OT: Need Recommendations for Powered Speaker for KX3 (WU6R)

[Mark Wheeler via Elecraft]

Bob,

Thanks for the thoughts. I’ll give that a try.

73, Mark
WU6R 

Sent from my iPad

> On Dec 22, 2018, at 5:08 PM, Bob McGraw K4TAX  wrote:
> 
> Sounds like RF getting into the audio amps of the speakers.  May require 
> ferrite beads with a couple of turns thorough the beads on the audio and 
> power cables. 
> 
> Bob, K4TAX
> 
> 
> Sent from my iPhone
> 
>> On Dec 22, 2018, at 3:59 PM, Mark Wheeler via Elecraft 
>>  wrote:
>> 
>> While the K3S is in the shop, I setup the KX3 as my temporary base station, 
>> but the internal speaker leaves a lot to be desired at higher volume. I 
>> connected a cheap set of powered pc speakers to the KX3 but I hear 
>> distortion through the powered speakers when transmitting with the KX3 and 
>> KPA-100 connected to a KPA-500. Has anyone found a high quality powered 
>> speaker to connect to the KX3 that doesn’t distort when transmitting? 
>> 
>> Thanks,
>> Mark/WU6R 
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to rmcg...@blomand.net
> 
> 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K-2 100 Tuner Question

[Johnny Matlock]

Thanks for the replies and all of the ideas of how to configure the k-2
with various tuner/amp set ups.
Very 72, 73
Merry Christmas
Johnny AC0BQ

On Sat, Dec 22, 2018 at 3:50 PM Dauer, Edward  wrote:

>  Nope.  But there is another option.
>
> I have three K2s in various configurations, just because I love building
> them.  One has the amp and the tuner in the now unavailable EC2 in the
> "twins" configuration.  Another has the amp inside the K2 and the tuner in
> the half-height chassis sitting on top.I almost never use the twins.
> The K2/100 and KAT100-1 mate beautifully -- electrically, physically, and
> aesthetically -- a very neat system with less cabling lying around than the
> twins require and only half the footprint on the desk.  And the KAT100-1
> works fine with the K2 at QRP power.  No need for the internal tuner.  I
> have that in the third of my three -- also seldom used.
>
> Ted, KN1CBR
> --
>
> Message: 22
> Date: Sat, 22 Dec 2018 13:49:33 -0600
> From: Johnny Matlock 
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] K-2 100 Tuner question
> Message-ID:
> <
> capk48pewssrb0btvrerky3ysbxxlbrreae4bd3hx8b3ms-s...@mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> I am looking at a K2-100 that is has the amp mounted in the top cover.
>
> Is it possible to have the 20 watt internal tuner in this enclosure
> With the amp?
>
> Thanks
> 73
> Happy Holidays
> Johnny AC0BQ
> --
>
>
> --
Check out the 4SQRP website at 4sqrp.com
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] OT: Need Recommendations for Powered Speaker for KX3 (WU6R)

[Bob McGraw K4TAX]

Sounds like RF getting into the audio amps of the speakers.  May require 
ferrite beads with a couple of turns thorough the beads on the audio and power 
cables. 

Bob, K4TAX


Sent from my iPhone

> On Dec 22, 2018, at 3:59 PM, Mark Wheeler via Elecraft 
>  wrote:
> 
> While the K3S is in the shop, I setup the KX3 as my temporary base station, 
> but the internal speaker leaves a lot to be desired at higher volume. I 
> connected a cheap set of powered pc speakers to the KX3 but I hear distortion 
> through the powered speakers when transmitting with the KX3 and KPA-100 
> connected to a KPA-500. Has anyone found a high quality powered speaker to 
> connect to the KX3 that doesn’t distort when transmitting? 
> 
> Thanks,
> Mark/WU6R 
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to rmcg...@blomand.net


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S - Win 10 Pro USB Audio Codec Issue

[N1VH]

Thanks Doug,
I'll check the 'audio inputs and outputs' list again.  If I remember
correctly, it only showed the internal sound card -mic and
speakers/headphone, no reference to the K3s or other USB Audio Codec.

73,
Marty - N1VH



--
Sent from: http://elecraft.365791.n2.nabble.com/
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] Pricing the KPA500 and KAT500

[Dauer, Edward]

Having the KPA1500 on board raises the question whether to keep the KPA500 and 
KAT500 as a backup, or to sell them.  Part of that decision depends on what a 
fair price would be for the two sold as a set.

If anyone who has either bought or sold these recently would be willing to 
share with me the fair selling range, please contact me off-list.  Both were 
kit-built.  Both are cosmetically perfect and have no known flaws or faults.

Thanks,

Ted, KN1CBR

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] OT: Need Recommendations for Powered Speaker for KX3 (WU6R)

[Mark Wheeler via Elecraft]

While the K3S is in the shop, I setup the KX3 as my temporary base station, but 
the internal speaker leaves a lot to be desired at higher volume. I connected a 
cheap set of powered pc speakers to the KX3 but I hear distortion through the 
powered speakers when transmitting with the KX3 and KPA-100 connected to a 
KPA-500. Has anyone found a high quality powered speaker to connect to the KX3 
that doesn’t distort when transmitting? 

Thanks,
Mark/WU6R 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] K-2 100 Tuner Question

[Dauer, Edward]

 Nope.  But there is another option.

I have three K2s in various configurations, just because I love building them.  
One has the amp and the tuner in the now unavailable EC2 in the "twins" 
configuration.  Another has the amp inside the K2 and the tuner in the 
half-height chassis sitting on top.I almost never use the twins.  The 
K2/100 and KAT100-1 mate beautifully -- electrically, physically, and 
aesthetically -- a very neat system with less cabling lying around than the 
twins require and only half the footprint on the desk.  And the KAT100-1 works 
fine with the K2 at QRP power.  No need for the internal tuner.  I have that in 
the third of my three -- also seldom used.

Ted, KN1CBR
--

Message: 22
Date: Sat, 22 Dec 2018 13:49:33 -0600
From: Johnny Matlock 
To: elecraft@mailman.qth.net
Subject: [Elecraft] K-2 100 Tuner question
Message-ID:

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

I am looking at a K2-100 that is has the amp mounted in the top cover.

Is it possible to have the 20 watt internal tuner in this enclosure
With the amp?

Thanks
73
Happy Holidays
Johnny AC0BQ
-- 
 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3S - Win 10 Pro USB Audio Codec Issue

[Doug Person]

The FTDI drivers have nothing to do with the audio interface. Look in 
device manager and see what you have under audio devices. If you find 
some undefined devices, right-click, select driver, and click update.  
If you need better step-by-step directions, I'd be happy to send you 
very detailed instructions with screen shots.  Also, make sure you're 
selecting the right audio devices. Most PCs these day already have two. 
With the K3S you're going to have 3.


73, Doug -- KJ0F

On 12/22/2018 2:14 PM, N1VH wrote:

My radio club just replaced our pc's and we are now running Win10 Pro.   The
K3S is recognized (com port and USB Controller) and works well with N1MM,
HRD and WSJT-X (CAT control).  However, the USB Audio Codec is not being
loaded for the radio.  Windows does not recognize the K3S sound card and as
a result, WSJT-X does not have USB codec options in the audio settings.   I
have done a Windows reset / reload and downloaded the latest FTDI drivers.
We had no issue running the K3S via USB under Win 10 basic on our old pc's.
(K3S is configured correctly - Rs232 = 'USB' and Mic Set = 'line in'.)

I know this was an issue earlier this year when MS pushed out a Win10
update.  I have searched the forums, but have not seen any fixes other than
what I have already tried.   Does anyone have a suggestion as to how to get
the USB Audio Codec to load in the Win 10 Pro  'device manager - sound,
video and game controllers'?

Thanks.
Marty - N1VH



--
Sent from: http://elecraft.365791.n2.nabble.com/
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to d...@kj0f.com


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 100 Tuner question

[Doug Person]

As I dug around in my store room to recover the KTA100-2, which sold 
quickly, I also found, still in the brown paper, an original K2 QRP top 
cover. I believe this was left over from K2 build that went directly to 
the 100 watt amp option.  Sop if anyone needs a new top cover, contact 
me off list.


73, Doug --KJ0F

On 12/22/2018 2:30 PM, Rick Wheeler wrote:

I always wondered why Elecraft discontinued the EC2 enclosure. Even the mod to 
use the EC2 enclosure with the 100 watt amp and tuner was unofficial as I 
understood. I built the 100 amp and tuner in the EC2 as per the instructions to 
mate with the K2. Maybe the demand was not there but neat setup and works great!


Rick

K4LX

K2 No. 2005




From: elecraft-boun...@mailman.qth.net  on behalf 
of Don Wilhelm 
Sent: Saturday, December 22, 2018 3:03:18 PM
To: Johnny Matlock; elecraft@mailman.qth.net
Subject: Re: [Elecraft] K2 100 Tuner question

Johnny,

NO!  First of all, the KPA100 occupies the entire top area of the K2
(there is no room in the K2 for both) and secondly, the KAT2 is only
rated for 20 watts,
and thirdly, the ATU must be between the amplifier and the antenna - a
tuner at the input of an amplifier will do nothing useful.

Use the KAT100-1 - it is about half the height of the K2 enclosure.

Contrary to some comments I have seen and heard, the KAT100-1 is
available and will be for some time in the future.

It is the EC2 enclosure that is no longer available, and the KAT100-2
depended on the EC2 for the enclosure, so the KAT100-2 had to be
discontinued at the same time as the EC2 was discontinued.

73,
Don W3FPR

On 12/22/2018 2:49 PM, Johnny Matlock wrote:

I am looking at a K2-100 that is has the amp mounted in the top cover.

Is it possible to have the 20 watt internal tuner in this enclosure
With the amp?


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to rickwhee...@outlook.com
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to d...@kj0f.com


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 100 Tuner question

[Rick Wheeler]

I always wondered why Elecraft discontinued the EC2 enclosure. Even the mod to 
use the EC2 enclosure with the 100 watt amp and tuner was unofficial as I 
understood. I built the 100 amp and tuner in the EC2 as per the instructions to 
mate with the K2. Maybe the demand was not there but neat setup and works great!


Rick

K4LX

K2 No. 2005




From: elecraft-boun...@mailman.qth.net  on 
behalf of Don Wilhelm 
Sent: Saturday, December 22, 2018 3:03:18 PM
To: Johnny Matlock; elecraft@mailman.qth.net
Subject: Re: [Elecraft] K2 100 Tuner question

Johnny,

NO!  First of all, the KPA100 occupies the entire top area of the K2
(there is no room in the K2 for both) and secondly, the KAT2 is only
rated for 20 watts,
and thirdly, the ATU must be between the amplifier and the antenna - a
tuner at the input of an amplifier will do nothing useful.

Use the KAT100-1 - it is about half the height of the K2 enclosure.

Contrary to some comments I have seen and heard, the KAT100-1 is
available and will be for some time in the future.

It is the EC2 enclosure that is no longer available, and the KAT100-2
depended on the EC2 for the enclosure, so the KAT100-2 had to be
discontinued at the same time as the EC2 was discontinued.

73,
Don W3FPR

On 12/22/2018 2:49 PM, Johnny Matlock wrote:
> I am looking at a K2-100 that is has the amp mounted in the top cover.
>
> Is it possible to have the 20 watt internal tuner in this enclosure
> With the amp?
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to rickwhee...@outlook.com
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] Season's best

[Rose]

Ken and I want to send each of you our best
Holiday wishes.

Merry Christmas!

88 / 73

Rose (N7HKW) / Ken (K0PP)
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] K3S - Win 10 Pro USB Audio Codec Issue

[N1VH]

My radio club just replaced our pc's and we are now running Win10 Pro.   The
K3S is recognized (com port and USB Controller) and works well with N1MM,
HRD and WSJT-X (CAT control).  However, the USB Audio Codec is not being
loaded for the radio.  Windows does not recognize the K3S sound card and as
a result, WSJT-X does not have USB codec options in the audio settings.   I
have done a Windows reset / reload and downloaded the latest FTDI drivers. 
We had no issue running the K3S via USB under Win 10 basic on our old pc's. 
(K3S is configured correctly - Rs232 = 'USB' and Mic Set = 'line in'.)

I know this was an issue earlier this year when MS pushed out a Win10
update.  I have searched the forums, but have not seen any fixes other than
what I have already tried.   Does anyone have a suggestion as to how to get
the USB Audio Codec to load in the Win 10 Pro  'device manager - sound,
video and game controllers'?

Thanks.
Marty - N1VH



--
Sent from: http://elecraft.365791.n2.nabble.com/
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 100 Tuner question

[Don Wilhelm]

Johnny,

NO!  First of all, the KPA100 occupies the entire top area of the K2 
(there is no room in the K2 for both) and secondly, the KAT2 is only 
rated for 20 watts,
and thirdly, the ATU must be between the amplifier and the antenna - a 
tuner at the input of an amplifier will do nothing useful.


Use the KAT100-1 - it is about half the height of the K2 enclosure.

Contrary to some comments I have seen and heard, the KAT100-1 is 
available and will be for some time in the future.


It is the EC2 enclosure that is no longer available, and the KAT100-2 
depended on the EC2 for the enclosure, so the KAT100-2 had to be 
discontinued at the same time as the EC2 was discontinued.


73,
Don W3FPR

On 12/22/2018 2:49 PM, Johnny Matlock wrote:

I am looking at a K2-100 that is has the amp mounted in the top cover.

Is it possible to have the 20 watt internal tuner in this enclosure
With the amp?


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K-2 100 Tuner question

[Byron Servies]

No. It is one or the other. The external 1/2 height KAT100 can be used with
the k2/100 though.

73, Byron N6NUL

On Sat, Dec 22, 2018 at 11:51 AM Johnny Matlock  wrote:

> I am looking at a K2-100 that is has the amp mounted in the top cover.
>
> Is it possible to have the 20 watt internal tuner in this enclosure
> With the amp?
>
-- 
- Northern California Contest Club
- CU in the Cal QSO Party 5-6 Oct 2019
- www.cqp.org
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] K-2 100 Tuner question

[Johnny Matlock]

I am looking at a K2-100 that is has the amp mounted in the top cover.

Is it possible to have the 20 watt internal tuner in this enclosure
With the amp?

Thanks
73
Happy Holidays
Johnny AC0BQ
-- 
Check out the 4SQRP website at 4sqrp.com
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] Tuners and spurious responses

[Bob McGraw K4TAX]

The Johnson Matchbox configuration is indeed a banpass filter meaning it 
attenuates both above and below the frequency to which it is tuned.    I 
use mine at Field Day to provide attenuation to stations operating both 
above and below the band being used.  The amount of attenuation does 
vary as it is not symmetrical in nature.


Probably you were using a less than optimum balun which had little 
common mode rejection or poor balance.   The best way to check the two 
configurations is to measure the current in each leg of the balanced 
feed line.  Many baluns do not do a good job or making a "balanced" 
feed.    The work of DJ0IP  {see his website} has a lot of information 
from real field measurements on baluns, good ones and bad ones.


73

Bob, K4TAX

On 12/21/2018 11:03 PM, Victor Rosenthal 4X6GP wrote:
I just replaced my single-ended T-network tuner plus balun with a 
massive old Johnson Matchbox. It is very selective, unlike the T 
network. It is as if there is a sharp bandpass filter between the 
antenna and the rig.


This may be totally imaginary, and there's no easy way to A/B test it, 
but it seems as though the K3 sounds "cleaner" in some sense.
Could it be that since the mixer sees a much narrower spectrum, there 
are fewer spurious responses?


Do those of you who use bandpass filters for SO2R or multi-transmitter 
contesting notice such an effect?


It also seems that the better balance (my antenna system is a dipole 
fed with balanced line) has reduced RF in the shack and possibly local 
noise pickup.




__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3s/0, RRC-1258 MkII, DXLabSuite Commander, WSJT-X configuration

[Richard Ferch]

Do you have a PC at the radio site? If so, the simplest way to do data
modes, and particularly WSJT-X, is to run the digital program in the
computer at the radio site and control it using remote desktop software. In
WSJT-X modes you don't need to listen to the audio, you don't need access
to the radio's front panel, and by doing the digital encoding and decoding
at the radio site you avoid any potential issues with Internet latency and
jitter. You can either run WSJT-X stand-alone controlling the radio
directly, or you can use Commander to control the radio and have WSJT-X use
Commander for rig control.

In CW and SSB you do need audio transport over the Internet as well as
front-panel control (the big tuning knob, in particular) and in CW you will
likely want a paddle at the control site as well. The RRC boxes do a great
job with all of this. You can configure the virtual serial ports in the
control-site RRC box to provide CAT control and a Winkeyer port for a copy
of N1MM+ running at the control site. In this configuration you do not need
a PC at the radio site, unless you need one for controlling other devices
(rotor, amp, antenna switches, equipment power on/off, etc.). Or, if there
is a computer at the radio site you can configure the radio-site RRC box to
provide CAT control and CW keying access to a copy of N1MM+ running at the
radio site and then control that copy of N1MM+ using remote desktop
software.

73,
Rich VE3KI



AE4ED wrote:

Before attempting to set up remote using K3s/0 and RRC-1258 MkII, I was
using DXLab Suite and WSJT-X just fine on my K3s.  I am hitting a wall when
I try to use DXLab Suite plus wSJT-X with the K3s/0 and RRC-1258 MkII.

Has anyone successfully done this?

I have seen two remote options come up during my internet search.
1) K3s/0 remote using RRC-1258 MkII w/o PC
2) K3s/0 remote using RemoteHam software apparently w/o using RRC-1258 MkII.

Ultimately, I want to do remote contesting using N1MM+ with the ability to
operate SSB, CW and data.  So, if anyone has information on how to
configure such a setup, that would be great as well!
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] K3s/0, RRC-1258 MkII, DXLabSuite Commander, WSJT-X configuration

[Fred Massey]

Happy Holidays,

I do not know if what I am trying to do is possible.

Before attempting to set up remote using K3s/0 and RRC-1258 MkII, I was
using DXLab Suite and WSJT-X just fine on my K3s.  I am hitting a wall when
I try to use DXLab Suite plus wSJT-X with the K3s/0 and RRC-1258 MkII.

Has anyone successfully done this?

I have seen two remote options come up during my internet search.
1) K3s/0 remote using RRC-1258 MkII w/o PC
2) K3s/0 remote using RemoteHam software apparently w/o using RRC-1258 MkII.

Ultimately, I want to do remote contesting using N1MM+ with the ability to
operate SSB, CW and data.  So, if anyone has information on how to
configure such a setup, that would be great as well!

73,
Fred
AE4ED
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] Tuners and spurious responses

[Vic Rosenthal]

I have a 50 kW BC station in line of sight with my antenna. When I used a 
vertical antenna without a tuner, it was enough to overpower the bias in the 
K3’s T/R switch and generate spurs all over 40 and 30 meters. I fixed it with a 
highpass filter before changing to a horizontal antenna .
When I rotate my dipole, there is a point where one end gets close to a 
structure. The tuning changes, so I know it has an effect, which must unbalance 
the system. Maybe coincidentally and maybe not, local noise increases at that 
point. I think I will try isolating the tuner from ground and feeding it 
through a balun.

Victor 4X6GP 

> On 22 Dec 2018, at 9:05, Al Lorona  wrote:
> 
> Vic, it may well be your imagination (!) but you may also be hearing the 
> rejection that your tuner gives you, particularly to strong AM stations in 
> the broadcast band. My measurements, as well as circuit simulation, show 
> about a 40 dB rejection of AM stations when the tuner is tuned to 40 meters.
> 
> Circuit simulation of the Johnson circuit shows not all that high a Q, but it 
> certainly is starting to look like a broad bandpass response. (It's actually  
> more high-pass than band-pass.) That's why it's effective against the 
> broadcast band. It's yet another argument to use a tuner like that one.
> 
> Interestingly, I just moved from a link-coupled tuner back to an unbalanced 
> tuner with balun because my measurements of common-mode current on the 
> transmission line show that the balun is more effective at suppressing it. 
> The link-coupled tuner acts more like a voltage balun which would be okay if 
> the antenna were inherently balanced, but in many cases the current balun 
> suppresses common-mode better when the antenna is in an environment that 
> makes it not well-balanced. When power lines or houses or cars or other 
> things are in the antenna's near field it tends to make the antenna present 
> an unbalanced load to the transmission line. That's when equal currents (not 
> voltages) work better. But I'm repeating what has long been known.
> 
> If you can measure this stuff, like with an RF current meter, it becomes much 
> clearer.
> 
> Enjoy your new, cleaner reception, thanks to that tuner!
> 
> Al  W6LX
> 
> 
 This may be totally imaginary, 
 -- 
 73,
 Victor, 4X6GP
> 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com