Date   

Leak through audio on transmit

farrerfolks@...
 

Some time in the last month or so I noticed that the headphones have low level audio from the transmitter.  This not too much of a problem, but the MON is at 0 and I thought that in that position, the speaker and phones were muted on transmit.  Comments appreciated.

Mel, K6KBE


Re: [Elecraft_K3] Factory Assembled

Fred Townsend
 


Mark I agree with you that because someone has done a task before it doesn't mean they will do a superior job of doing it again. Everyone has heard of the lemon cars Detroit has put out. Everyone has bad days. Now I think Elecraft has an enlightened management that is going to motivate its workers to do a superior job than to Detroit but it doesn't guarantee that will always happen. The guarantee is if, in those rare occasions, they do make a mistake they will make it right and without making the customer jump through hoops. Attaboy Elecraft.

On the other side I may be conceited in thinking I do a superior job at assembling my kit than to Elecraft. Why? First I am meticulous in what I do. I double check everything and I am never bored because I have done the task a thousand times before. Second if Elecraft has a weak spot it is in their hardware. They use parts that corrode and they use split lock washers as spacers. I don't. Where I see lesser hardware I throw it away and use my own stainless. That includes using nuts with built-in star lock washers instead of a split-lock and separate nuts. My attitude is it's much simpler to build it right the first time than fix it later.

 73

 Fred, AE6QL

 

-----Original Message-----
From: Mark Bayern
Sent: Apr 12, 2014 7:59 PM
To: Elecraft_K3@... garantee
Subject: Re: [Elecraft_K3] Factory Assembled

 

> There are people on this group that have
> built more than one, ask them if the
> 2nd, 3rd, 4th units went together
> faster/better as they built more than
> one.

Sure the 2nd, 3rd, etc. would go together faster. So what?

All properly assembled K3s should have the same performance. If
someone is looking at an older K3 (low serial number) the real
question is "what mods have been completed?"

Mark AD5SS -- with a K3 in the low 800's

On Sat, Apr 12, 2014 at 6:33 PM, Jim > Anything greater than one unit is far
> better in a "manufacturing" environment.
>
> Take just about any task. The second
> time around is easier/faster. The third
> time around is even easier/faster.
>
> There are people on this group that have
> built more than one, ask them if the
> 2nd, 3rd, 4th units went together
> faster/better as they built more than
> one.
>
> Jim
> WA9ZBV


Re: [Elecraft_K3] Mic connector

ROBERT NELSON
 

The function pin is not a common. According to the diagram the function pin presents a voltage to the microprocessor. Exactly the same way that the up and down pins present a voltage. The question is what is the microprocessor programmed to do when it sees the voltage?

73, Bob K2QPN


Re: [Elecraft_K3] K3/0 mini - any stand?

 

On Apr 12, 2014, at 2:06 PM, <astro-peter@maxi-dsl.de> wrote:


Hi to all;

Has somebody seen the new K3/0 mini live and can tell me, whether there is solmething like foldable rear feed, which enables so have the front plate and the display in a comfortable working position,
Yes.

73,
Wayne
N6KR


Re: [Elecraft_K3] Factory Assembled

jbollit@ymail.com
 

Mark,

 

Read the beginning of this thread, it will answer your question.

 

When ideology meets reality, reality is what happens in real life.

 

Jim

WA9ZBV

 

 

 

From: Elecraft_K3@... [mailto:Elecraft_K3@...] On Behalf Of Mark Bayern
Sent: Saturday, April 12, 2014 7:59 PM
To: Elecraft_K3@...
Subject: Re: [Elecraft_K3] Factory Assembled

 

 

> There are people on this group that have
> built more than one, ask them if the
> 2nd, 3rd, 4th units went together
> faster/better as they built more than
> one.

Sure the 2nd, 3rd, etc. would go together faster. So what?

All properly assembled K3s should have the same performance. If
someone is looking at an older K3 (low serial number) the real
question is "what mods have been completed?"

Mark AD5SS -- with a K3 in the low 800's

On Sat, Apr 12, 2014 at 6:33 PM, Jim <jbollit@...> wrote:
> Anything greater than one unit is far
> better in a "manufacturing" environment.
>
> Take just about any task. The second
> time around is easier/faster. The third
> time around is even easier/faster.
>
> There are people on this group that have
> built more than one, ask them if the
> 2nd, 3rd, 4th units went together
> faster/better as they built more than
> one.
>
> Jim
> WA9ZBV


Re: Distortion in headphones

Lou Laderman W0FK
 

Oops, looks like I misread the post. NB would not affect monitored xmit audio, just rcv.

 

.


Re: [Elecraft_K3] Re: Distortion in headphones

mikerodgerske5gbc
 

True, but NB shouldn't be problematic in transmit. 

73
Mike R

On Apr 12, 2014, at 4:56 PM, <lladerman@...> wrote:

 

Randy, is your noise blanker on? If so, turn it off, and see if the received distorted audio goes away. With aggressive settings, the NB circuitry sounds distorted. Whenever I get that effect, I back my NB settings down to a less aggressive setting, which still may reduce or eliminate any noise.

 

73,

 

Lou, W0FK


Re: [Elecraft_K3] Factory Assembled

Mark Bayern
 

There are people on this group that have
built more than one, ask them if the
2nd, 3rd, 4th units went together
faster/better as they built more than
one.
Sure the 2nd, 3rd, etc. would go together faster. So what?

All properly assembled K3s should have the same performance. If
someone is looking at an older K3 (low serial number) the real
question is "what mods have been completed?"

Mark AD5SS -- with a K3 in the low 800's


On Sat, Apr 12, 2014 at 6:33 PM, Jim <jbollit@ymail.com> wrote:
Anything greater than one unit is far
better in a "manufacturing" environment.

Take just about any task. The second
time around is easier/faster. The third
time around is even easier/faster.

There are people on this group that have
built more than one, ask them if the
2nd, 3rd, 4th units went together
faster/better as they built more than
one.

Jim
WA9ZBV


Re: [Elecraft_K3] Factory Assembled

jbollit@ymail.com
 

Anything greater than one unit is far
better in a "manufacturing" environment.

Take just about any task. The second
time around is easier/faster. The third
time around is even easier/faster.

There are people on this group that have
built more than one, ask them if the
2nd, 3rd, 4th units went together
faster/better as they built more than
one.

Jim
WA9ZBV

-----Original Message-----
From: Elecraft_K3@yahoogroups.com
[mailto:Elecraft_K3@yahoogroups.com] On
Behalf Of Brian Alsop
Sent: Saturday, April 12, 2014 11:19 AM
To: Elecraft_K3@yahoogroups.com
Subject: Re: [Elecraft_K3] Factory
Assembled

Would you say Elecraft has a high volume
assembly line? They have sold only 8K
K3's. I'd be willing to bet the vast
majority of them were kits.

I'd say any argument based upon "volume"
clearly doesn't apply to Elecraft.

73 de Brian/K3KO

On 4/12/2014 18:09, Jim wrote:


Nope, there is a difference.

The factory has the "un written"
instructions that you get only by
assembling hundreds of radios.

I had a kit version that was missing a
screw that was needed for
ground. The receiver was
intermittent.

Also had a rig with screws not fully
tightened, causing intermittents.

Also had rigs with incorrect lock
washers installed, and it was a
matter> of time before the washer "dug
into" the fiberglass of the PCB, and
making an intermittent contact.

The factory could make these mistakes,
but it is **much** more
unlikely they will.

It is well known in the industry that
there are lower, out of box,
failures on a high volume production
line, compared to a low volume
production line.

Apple expects (and gets) 100 ppm (~100
units for every 1 million units>
manufactured) of out of box failures.

Jim

WA9ZBV

*From:*Elecraft_K3@yahoogroups.com
[mailto:Elecraft_K3@yahoogroups.com]
*On Behalf Of *Bob
*Sent:* Saturday, April 12, 2014 9:56
AM
*To:* Elecraft_K3@yahoogroups.com
*Subject:* Re: [Elecraft_K3] Factory
Assembled

The big question is why would it
matter? The kit or factory built
should end up the same.

I can tell you about mine.. It was a
used bare bones factory built
unit. Then I added the options almost
one at a time.
So it was factory built but has been
back to "kit built" almost a few
times.

Should it be entitled to a premium
price because it was factory built?
I do not think so.

73,
Bob
K2TK

On 4/12/2014 9:05 AM, Jeffrey Cantor
wrote:

If I am second-hand purchasing a
K-3 how can I verify if it was
factory assembled?







No virus found in this message.
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<http://www.avg.com>
Version: 2012.0.2247 / Virus Database:
3722/6833 - Release Date:
04/11/14



-----
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Checked by AVG - www.avg.com
Version: 2012.0.2247 / Virus Database:
3722/6833 - Release Date: 04/11/14




------------------------------------

Yahoo Groups Links

http://groups.yahoo.com/group/Elecraft_K
3/

http://groups.yahoo.com/group/Elecraft_K
3/join
(Yahoo! ID required)

Elecraft_K3-fullfeatured@yahoogroups.com

Elecraft_K3-unsubscribe@yahoogroups.com

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os/terms/


Re: Distortion in headphones

Lou Laderman W0FK
 

Randy, is your noise blanker on? If so, turn it off, and see if the received distorted audio goes away. With aggressive settings, the NB circuitry sounds distorted. Whenever I get that effect, I back my NB settings down to a less aggressive setting, which still may reduce or eliminate any noise.

 

73,

 

Lou, W0FK


Re: [Elecraft_K3] Distortion in headphones

Torrey Mitchell <torreym@...>
 

RFI a big problem for lots of headphones…especially the nicer ones.  I have a $170 set of Sony noise-cancelling headphones that go crazy whenever I use high power.  On the other hand, the Bose QuietComfort 15 noise cancelling headphones have no RFI issues.

 

Torrey N9PY

 

From: Elecraft_K3@... [mailto:Elecraft_K3@...] On Behalf Of k5rhd.73@...
Sent: Saturday, April 12, 2014 10:25
To: Elecraft_K3@...
Subject: [Elecraft_K3] Distortion in headphones

 

 

I am trying to participate in the NMQP.  People are saying my audio is good but I am getting distortion on al bands in my headphones.  I am running 100W, with two different antennas.  Happens on both.  I do NOT get distortion when in Test TX mode.  I am remote temporary fixed location and do not have a lot of bandwidth or tools with me.  Anyone got any quick things I can try?

 

I have checked my ALC as per normal.  I am using the same K3, Heil headset, etc that I do at home. 

 

Please reply direct as I can check my phone easier than the website.

 

Thanks and 73,

 

K5RHD

 

/randy


K3/0 mini - any stand?

astro_peter
 

Hi to all;

Has somebody seen the new K3/0 mini live and can tell me, whether there is solmething like foldable rear feed, which enables so have the front plate and the display in a comfortable working position, like the one, you have at the normal K3, when one uses the tilt stand, or at the KX3 if one uses the foldable rear feet???

 

Many thanks in advance for sharing your konwledge!

 

Best regards from Munich!

 

Peter - DL1MDZ

     

 


 


Re: [Elecraft_K3] Distortion in headphones

David G3YYD <g3yyd@...>
 

The cause is not necessarily RFI but DC ground current from the PSU impacting on the headphones. You do not need many mVs of this to be heard. Turn the monitor on the K3 down to zero. If it is still being heard then quite likely this is ground current.

 

If there is anything else attached to the PSU supplying the K3 disconnect it and see if it is gone. If you are using anything external between the K3 and the headphones disconnect that and plug headphones direct into the K3.

 

If you have an “earth” lead on the back of the K3 remove this and listen again. You are looking for anything that may cause ground currents impacting on the headphones.

 

You may require a audio transformer to isolate the ground current from the headphones. You may be able to reduce it by using thicker ground wire to the point where it does not annoy.

 

73 David G3YYD

 

From: Elecraft_K3@... [mailto:Elecraft_K3@...] On Behalf Of Dave Hachadorian
Sent: 12 April 2014 19:44
To: Elecraft_K3@...
Subject: Re: [Elecraft_K3] Distortion in headphones

 




If others report the audio clean, it is likely just RFI in the monitor.  Maybe if you turn off the monitor, the distortion will go away.  Press and hold MON button, then turn the level all the way down to zero.  Another thing you can do is to turn the monitor volume UP.  The RFI is usually constant level, but the louder clean monitor will improve the clean-to-garbled ratio. I didn’t say that very elegantly, but I hope you get the idea. 

 

I have encountered monitor distortion here at high power.  My case had other hardware in the line, such as an so2r switch box with a lot of interconnections.  I had to install an isolation transformer in the headphone line to clean it up. 

 

Dave Hachadorian, K6LL
Yuma, AZ

 

Sent: Saturday, April 12, 2014 8:25 AM

Subject: [Elecraft_K3] Distortion in headphones

 

 

I am trying to participate in the NMQP.  People are saying my audio is good but I am getting distortion on al bands in my headphones.  I am running 100W, with two different antennas.  Happens on both.  I do NOT get distortion when in Test TX mode.  I am remote temporary fixed location and do not have a lot of bandwidth or tools with me.  Anyone got any quick things I can try?

 

I have checked my ALC as per normal.  I am using the same K3, Heil headset, etc that I do at home.

 

Please reply direct as I can check my phone easier than the website.

 

Thanks and 73,

 

K5RHD

 

/randy





Re: [Elecraft_K3] Distortion in headphones

Dale J. <dj2001x@...>
 

Are you in fast monitor or normal monitor?

Switch to fast monitor and see if you still have the distortion.

A dummy load would also tell you something, but you may not have one there.

Dale, k9vuj

On 12, Apr 2014, at 10:25, k5rhd.73@gmail.com wrote:



I am trying to participate in the NMQP. People are saying my audio is good but I am getting distortion on al bands in my headphones. I am running 100W, with two different antennas. Happens on both. I do NOT get distortion when in Test TX mode. I am remote temporary fixed location and do not have a lot of bandwidth or tools with me. Anyone got any quick things I can try?

I have checked my ALC as per normal. I am using the same K3, Heil headset, etc that I do at home.

Please reply direct as I can check my phone easier than the website.

Thanks and 73,

K5RHD

/randy



Re: [Elecraft_K3] Distortion in headphones

Dave Hachadorian
 

If others report the audio clean, it is likely just RFI in the monitor.  Maybe if you turn off the monitor, the distortion will go away.  Press and hold MON button, then turn the level all the way down to zero.  Another thing you can do is to turn the monitor volume UP.  The RFI is usually constant level, but the louder clean monitor will improve the clean-to-garbled ratio. I didn’t say that very elegantly, but I hope you get the idea. 
 
I have encountered monitor distortion here at high power.  My case had other hardware in the line, such as an so2r switch box with a lot of interconnections.  I had to install an isolation transformer in the headphone line to clean it up. 
 
Dave Hachadorian, K6LL
Yuma, AZ
 

Sent: Saturday, April 12, 2014 8:25 AM
Subject: [Elecraft_K3] Distortion in headphones
 
 

I am trying to participate in the NMQP.  People are saying my audio is good but I am getting distortion on al bands in my headphones.  I am running 100W, with two different antennas.  Happens on both.  I do NOT get distortion when in Test TX mode.  I am remote temporary fixed location and do not have a lot of bandwidth or tools with me.  Anyone got any quick things I can try?

 
I have checked my ALC as per normal.  I am using the same K3, Heil headset, etc that I do at home.
 
Please reply direct as I can check my phone easier than the website.
 
Thanks and 73,
 
K5RHD
 
/randy


Re: [Elecraft_K3] Distortion in headphones

Mike Flowers
 

>>> I do NOT get distortion when in Test TX mode.

 

I suspect RFI – got some ferrites handy?

 

- 73 de Mike, K6MKF, W6NAG, Secretary - NCDXC, IDXG, ADXG, RRC #933, K3-P3-KPA500-KAT500 Addict, Maui

 

From: Elecraft_K3@... [mailto:Elecraft_K3@...] On Behalf Of k5rhd.73@...
Sent: Saturday, April 12, 2014 8:25 AM
To: Elecraft_K3@...
Subject: [Elecraft_K3] Distortion in headphones

 

 

I am trying to participate in the NMQP.  People are saying my audio is good but I am getting distortion on al bands in my headphones.  I am running 100W, with two different antennas.  Happens on both.  I do NOT get distortion when in Test TX mode.  I am remote temporary fixed location and do not have a lot of bandwidth or tools with me.  Anyone got any quick things I can try?

 

I have checked my ALC as per normal.  I am using the same K3, Heil headset, etc that I do at home. 

 

Please reply direct as I can check my phone easier than the website.

 

Thanks and 73,

 

K5RHD

 

/randy


Re: [Elecraft_K3] Factory Assembled

Brian Alsop
 

Would you say Elecraft has a high volume assembly line? They have sold
only 8K K3's. I'd be willing to bet the vast majority of them were kits.

I'd say any argument based upon "volume" clearly doesn't apply to
Elecraft.

73 de Brian/K3KO

On 4/12/2014 18:09, Jim wrote:


Nope, there is a difference.

The factory has the “un written” instructions that you get only by
assembling hundreds of radios.

I had a kit version that was missing a screw that was needed for
ground. The receiver was intermittent.

Also had a rig with screws not fully tightened, causing intermittents.

Also had rigs with incorrect lock washers installed, and it was a matter
of time before the washer “dug into” the fiberglass of the PCB, and
making an intermittent contact.

The factory could make these mistakes, but it is **much** more unlikely
they will.

It is well known in the industry that there are lower, out of box,
failures on a high volume production line, compared to a low volume
production line.

Apple expects (and gets) 100 ppm (~100 units for every 1 million units
manufactured) of out of box failures.

Jim

WA9ZBV

*From:*Elecraft_K3@yahoogroups.com [mailto:Elecraft_K3@yahoogroups.com]
*On Behalf Of *Bob
*Sent:* Saturday, April 12, 2014 9:56 AM
*To:* Elecraft_K3@yahoogroups.com
*Subject:* Re: [Elecraft_K3] Factory Assembled

The big question is why would it matter? The kit or factory built
should end up the same.

I can tell you about mine.. It was a used bare bones factory built
unit. Then I added the options almost one at a time.
So it was factory built but has been back to "kit built" almost a few
times.

Should it be entitled to a premium price because it was factory built?
I do not think so.

73,
Bob
K2TK

On 4/12/2014 9:05 AM, Jeffrey Cantor wrote:

If I am second-hand purchasing a K-3 how can I verify if it was
factory assembled?







No virus found in this message.
Checked by AVG - www.avg.com <http://www.avg.com>
Version: 2012.0.2247 / Virus Database: 3722/6833 - Release Date: 04/11/14



-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2012.0.2247 / Virus Database: 3722/6833 - Release Date: 04/11/14


Re: [Elecraft_K3] Factory Assembled

jbollit@ymail.com
 

I know that well known metal detector company keeps track of units returned for repair.

 

In some cases, they will advise the owner that their used metal detector was returned to the factory before, and advised the customer they will not repair the unit.  They will offer an equivalent unit at a lower price than new.

 

Some things just can’t be fixed, short of replacing the complete unit.

 

Jim

WA9ZBV

 

From: Elecraft_K3@... [mailto:Elecraft_K3@...] On Behalf Of Bob
Sent: Saturday, April 12, 2014 10:32 AM
To: Elecraft_K3@...
Subject: Re: [Elecraft_K3] Factory Assembled

 

 

I'm not so sure about the risk to Elecraft.   Look at the information disclosed in a CarFax.  A lot of people have no clue to what records are available on their car.

Car has been in 3 accidents. K3 has 3 trips to factory, one for a repair and 2 for update and option installations...

I don't know legally but what is the fundamental difference?. Trust the used car salesman or the K3 owner.  Well, trust but verify if possible..

73,
Bob
K2TK

On 4/12/2014 11:59 AM, Keith Ennis wrote:

 

Unless someone gives Elecraft permission I hope they give no one any info.  How does Elecraft know what the caller is really after or why?  Actually it is none of their business what someone does or says about anything they own.  I would think they could under some circumstances open themselves up to a lawsuit.



Keith, XE3/K5ENS

On Saturday, April 12, 2014 10:50 AM, Dyarnes wrote:

 

Keith and All,

 

Maybe you are not saying anything different, but this is only tantamount to confirming the “exact” model number—is it a K3/xx, or a K3/xx-F.  Elecraft does much the same type of thing by openly confirming which serial number and forward contains certain mods or updates that were factory initiated.  Jeffrey didn’t indicate he was seeking any “personal” info, like even who the original purchaser was!  If he did, Elecraft would presumably refuse to disclose that type of information.  As a practical matter, Elecraft could even disclose the distinction regularly if their serial numbering system included a designator as to kit or factory unit.  In any event, this kind of disclosure contains no personal info—only rig specific info.  If someone was misrepresenting that info, it would be their problem, not Elecraft’s.  However, Elecraft may not want to bother with doing this, but it is seemingly difficult to criticize them if they do.  Maybe this is a poor illustration, but what is the difference between this and what you might learn about an automobile by getting a “CarFax” report?  That doesn’t disclose any personal info either, but you may be able to easily deduce who owned it.

 

Dave W7AQK

 

 

 

Sent: Saturday, April 12, 2014 7:42 AM

Subject: Re: [Elecraft_K3] Factory Assembled

 

 

They may give that info out but they are wrong to tell any info about another customers purchase.

I would not want Elecraft to tell any caller what I bought from them.



Keith, XE3/K5ENS

On Saturday, April 12, 2014 9:36 AM, Dyarnes <w7aqk@...> wrote:

 

Call Elecraft!  Give them the serial number!

 

Dave W7AQK

 

 

 


Re: [Elecraft_K3] Factory Assembled

jbollit@ymail.com
 

Nope, there is a difference.

 

The factory has the “un written” instructions that you get only by assembling hundreds of radios.

 

I had a kit version that was missing a screw that was needed for ground.  The receiver was intermittent.

 

Also had a rig with screws not fully tightened, causing intermittents.

 

Also had rigs with incorrect lock washers installed, and it was a matter of time before the washer “dug into” the fiberglass of the PCB, and making an intermittent contact.

 

The factory could make these mistakes, but it is *much* more unlikely they will.

 

It is well known in the industry that there are lower, out of box, failures on a high volume production line, compared to a low volume production line.

 

Apple expects (and gets) 100 ppm (~100 units for every 1 million units manufactured) of out of box failures.

 

Jim

WA9ZBV

 

From: Elecraft_K3@... [mailto:Elecraft_K3@...] On Behalf Of Bob
Sent: Saturday, April 12, 2014 9:56 AM
To: Elecraft_K3@...
Subject: Re: [Elecraft_K3] Factory Assembled

 

 

The big question is why would it matter?   The kit or factory built should end up the same.

I can tell you about mine..  It was a used bare bones factory built unit.  Then I added the options almost one at a time.
So it was factory built but has been back to "kit built" almost a few times. 

Should it be entitled to a premium price because it was factory built?  I do not think so.

73,
Bob
K2TK

On 4/12/2014 9:05 AM, Jeffrey Cantor wrote:

 

 

If I am second-hand purchasing a K-3 how can I verify if it was factory assembled?

 


Re: [Elecraft_K3] Factory Assembled

jbollit@ymail.com
 

They DON’T

 

They will only tell you if it was factory built and the year.

 

Jim

WA9ZBV

 

 

 

 

 

From: Elecraft_K3@... [mailto:Elecraft_K3@...] On Behalf Of Keith Ennis
Sent: Saturday, April 12, 2014 7:43 AM
To: Elecraft_K3@...
Subject: Re: [Elecraft_K3] Factory Assembled

 

 

They may give that info out but they are wrong to tell any info about another customers purchase.

I would not want Elecraft to tell any caller what I bought from them.



Keith, XE3/K5ENS

On Saturday, April 12, 2014 9:36 AM, Dyarnes <w7aqk@...> wrote:

 

Call Elecraft!  Give them the serial number!

 

Dave W7AQK

 

 

 

Sent: Saturday, April 12, 2014 6:05 AM

Subject: [Elecraft_K3] Factory Assembled

 

 



If I am second-hand purchasing a K-3 how can I verify if it was factory assembled?



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