[Elecraft] K3 For Sale

[Howard Sherer]

In making my plans for a K3s upgrade, I have decided to sell my K3. I am
going to remove all of my optional filters and only include the 2.8, 8 pole
SSB. Currently running the latest firmware.

K3 100 S/N 504 with all updates except for the enhanced Lf bandwidth DSP
ATU
KXV3
KBF3

This has been a great radio, non smoking, no marks & very clean.

$1900. plus shipping in the factory carton
Howard AE3T
cell 484-951-1622
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[Elecraft] filter shift

[VANO Peter]

Hi Al,
tnx for the answer (the only one, hi). The phenomenon is still here, so
I'll be waiting what will be in the future, or maybe somebody from
Elecraft will have the solution...
Best regards
OM7VV Peter
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Re: [Elecraft] K3S Proper Grounding

[Gene Gabry]

Good information David. I also Have a 80m OCF
http://www.slickpic.com/users/GeneGabry/albums/N9TFHamStationPhotos/?wallpap
er
 #8644290

and choosing the correct balun and RF choke is paramount. I went with the
(W2FMI design) Com-BAL-41130ET 4:1 current balun. A bit pricy at $100.00,
but worth every buck. I also added a 10 turn RF choke at the feed point.
Absolutely no RF back to the shack on any of the 7 bands it is resonate on.
Only running 100 watts, but antenna is low hanging at 35' with only about
50' of coax feeding from shack. 

 

73 Gene N9TF

 

K3S 10057

 

>I think we are drifting off topic, my apologies, but if you are considering
an ocf dipole you can only prevent common mode currents by use of a double
>wound balun, ie 2 separately made chokes connected together as a 4:1.  A
single core version does not properly cancel the common mode current that
>results in unwanted radiation from your coax feeder and can make your
equipment live to rf.

> A huge amount of work has been done on this subject by DJ0IP and I suggest
you look at his site

 

>  http://www.dj0ip.de/balun-stuff/ is a
good place to start.

 

>The proof of the pudding is in the eating and I have not seen anyone do
real world measurements like he has on real aerials.  

 

>David

 

>G3UNA

 

> 

> On 30 September 2015 at 20:51 Jerry Moore <
 je...@carolinaheli.com> wrote:

> 

> 

> What I don't understand is my previous radio didn't affect the TV 

> as far as I know (xyl never complained) so it has me perplexed because 

> the radio shouldn't matter. As far as the buckmaster ocf, it uses a 

> current transformer (auto-transformer )to balance the antenna and match
the impedance.

> Jer

> 

> On September 28, 2015 1:37:16 PM EDT, Jim Brown 

> <  j...@audiosystemsgroup.com> wrote:

> >On Mon,9/28/2015 9:35 AM, dw wrote:

> >> If a tuner is located at the rig-side of the coax, and the coax is
at

> >> high SWR, it could possibly be a cause for coax radiation.

> >

> >It doesn't work that way.

> >

> >Radiation from coax is the result of IMBALANCE in the antenna. A

> >ferrite

> >common mode choke at the feedpoint can fix that.

> >

> >73, Jim K9YC

> >__

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 http://www.qsl.net/donate.html

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je...@carolinaheli.com

> 

> --

> Sent from my Android device with K-9 Mail. Please excuse my brevity.

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Re: [Elecraft] KX3 RX optimization

[ae4pb]

I find the audio FX delay feature really makes a huge difference in my
headset. I'm not sure how/why but I hear and copy better with it turned on.
I currently run the delay at 5. 
Jer

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Al Duncan
Sent: Thursday, October 01, 2015 10:06 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] KX3 RX optimization

Most of you have probably already discovered this, but the following points
I have found for CW operation (some of it applies to all modes) may be of
help for new owners of a KX3:   

1. The default 30dB of preamp gain isn't always a good choice. If I notice
that the noise level (without signals) on a particular band is S5 or
stronger, I reduce the preamp gain by 10dB and see if that helps. Amplifying
noise doesn't help copy the signal buried in it any better. Even the noise
reduction (NR) circuit will work better when it isn't swamped with noise;
the CWT also works better for tuning a CW signal. I often find that
reception on 40m and 80m is better with the preamp off or at 10 dB gain max.
Note that preamp gain is set in the menu individually for each band.

2. A narrow bandwidth such as 300 Hz or even 100 Hz can really make the CW
signal you are trying to hear stick out. A narrower bandwidth also makes the
CWT tuning work better. I use a 500 Hz bandwidth when tuning around and then
reduce it once I find a signal of interest, using CWT to get "on his
frequency" (you could also press the SPOT button to let the KX3 center
itself on the signal). 

3. Remember that the receiver RF Gain setting appears to work "backwards" to
what many people think. Maximum sensitivity is at a setting of 0 (zero),
poorest sensitivity is at a setting of 60.

 

73, AL - VE3RRD

 

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[Elecraft] KX3 RX optimization

[Al Duncan]

Most of you have probably already discovered this, but the following points
I have found for CW operation (some of it applies to all modes) may be of
help for new owners of a KX3:   

1. The default 30dB of preamp gain isn't always a good choice. If I notice
that the noise level (without signals) on a particular band is S5 or
stronger, I reduce the preamp gain by 10dB and see if that helps. Amplifying
noise doesn't help copy the signal buried in it any better. Even the noise
reduction (NR) circuit will work better when it isn't swamped with noise;
the CWT also works better for tuning a CW signal. I often find that
reception on 40m and 80m is better with the preamp off or at 10 dB gain max.
Note that preamp gain is set in the menu individually for each band.

2. A narrow bandwidth such as 300 Hz or even 100 Hz can really make the CW
signal you are trying to hear stick out. A narrower bandwidth also makes the
CWT tuning work better. I use a 500 Hz bandwidth when tuning around and then
reduce it once I find a signal of interest, using CWT to get "on his
frequency" (you could also press the SPOT button to let the KX3 center
itself on the signal). 

3. Remember that the receiver RF Gain setting appears to work "backwards" to
what many people think. Maximum sensitivity is at a setting of 0 (zero),
poorest sensitivity is at a setting of 60.

 

73, AL - VE3RRD

 

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Re: [Elecraft] K3S Proper Grounding

[ae4pb]

Part of my confusion is based on this being a commercial solution that
didn't have a problem until recently. One thing I've thought of is that my
TV configuration may have changed with the addition of a Chromecast..etc..
so I'll be doing a clean setup troubleshooting here soon (remove everything
except power, see if I can duplicate.. if not then add antenna lead... if
not ... add..etc.. ). The only other change in my environment is that the
weather is raining and the antenna routes through a pear tree. So it's
possible the wet foliage is contributing. If that's the case then the tree
comes down. 

I'm expecting that it's something added/connected to the TV. Powerline
filters haven't had any effect. I just realized my station safety grounds
aren't connected because I'm still working on my Operating table hutch. Just
have the trim and staining to finish for that. I'm also planning to run a
dedicated power cable with heavier gauge wire to get a better ground at my
station. Based on the TON of responses I've gotten I'll be running a heavy
gauge THNN or similar from outside my station (where I'll add a ground rod)
up to an antenna switch for grounding and bonding all of it together with
the main ground on the other side of the house. I'm not sure how I'll NOT
end up with a ground loop in this configuration.



Main panel/ground is around 80' from the proposed shack ground rod. So the
Main panel ground will come in via the heavy power cable. The shack side
ground rod will bond to the heavy power cable ground. The antenna switch
ground will run along the roof and down the side of the house to the shack
ground rod. All internal shack equipment will be grounded via a heavy copper
bus plate to the power cable ground. So the coax will end up being grounded
in the shack AND via the antenna switch ground. From all of the reading the
antenna switch ground is for lightning to have a lower impedance to ground
OUTSIDE the house instead of through my gear/power system.


It will be a bit to get this done as I'm having to replace antenna switches
lost during a relocation. I have the antenna control boxes for the ameritron
RCS8 and 4. Apparently I can't just buy the switch without the controlbox.
Jer





-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gene Gabry
Sent: Thursday, October 01, 2015 9:25 AM
To: 'elecraft'
Subject: Re: [Elecraft] K3S Proper Grounding

Good information David. I also Have a 80m OCF
http://www.slickpic.com/users/GeneGabry/albums/N9TFHamStationPhotos/?wallpap
er
 #8644290

and choosing the correct balun and RF choke is paramount. I went with the
(W2FMI design) Com-BAL-41130ET 4:1 current balun. A bit pricy at $100.00,
but worth every buck. I also added a 10 turn RF choke at the feed point.
Absolutely no RF back to the shack on any of the 7 bands it is resonate on.
Only running 100 watts, but antenna is low hanging at 35' with only about
50' of coax feeding from shack. 

 

73 Gene N9TF

 

K3S 10057

 

>I think we are drifting off topic, my apologies, but if you are 
>considering
an ocf dipole you can only prevent common mode currents by use of a double
>wound balun, ie 2 separately made chokes connected together as a 4:1.  
>A
single core version does not properly cancel the common mode current that
>results in unwanted radiation from your coax feeder and can make your
equipment live to rf.

> A huge amount of work has been done on this subject by DJ0IP and I 
> suggest
you look at his site

 

>  http://www.dj0ip.de/balun-stuff/ is 
> a
good place to start.

 

>The proof of the pudding is in the eating and I have not seen anyone do
real world measurements like he has on real aerials.  

 

>David

 

>G3UNA

 

> 

> On 30 September 2015 at 20:51 Jerry Moore <
 je...@carolinaheli.com> wrote:

> 

> 

> What I don't understand is my previous radio didn't affect the TV

> as far as I know (xyl never complained) so it has me perplexed because

> the radio shouldn't matter. As far as the buckmaster ocf, it uses a

> current transformer (auto-transformer )to balance the antenna and 
> match
the impedance.

> Jer

> 

> On September 28, 2015 1:37:16 PM EDT, Jim Brown

> <  j...@audiosystemsgroup.com> wrote:

> >On Mon,9/28/2015 9:35 AM, dw wrote:

> >> If a tuner is located at the rig-side of the coax, and the coax 
> is
at

> >> high SWR, it could possibly be a cause for coax radiation.

> >

> >It doesn't work that way.

> >

> >Radiation from coax is the result of IMBALANCE in the antenna. A

> >ferrite

> >common mode choke at the feedpoint can fix that.

> >

> >73, Jim K9YC

> >__

> >Elecraft mailing list

> 

[Elecraft] Re KAT500 Fault

[Mike Lichtman]

   Dave,
  I  recently purchased my KAT 500 and if I remember correctly the manual 
says it will fault for over 1K power. If you have 1500 w that is the cause. 73 
Mike KF6KXG
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[Elecraft] VFO B is tracking VFO A

[paul ecker]

A related question: What is difference between VFO IND  and VFO LNK ? 
I ask because I recently installed the 2nd  receiver and had set VFO IND to 
Yes. I then noticed that when trying to use the SCAN feature that when I press 
M>V, only VFO A was being populated with the stored memory not VFO B. Thus Scan 
would not start.
73 Paulkc2nyu
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Re: [Elecraft] VFO B is tracking VFO A

[Wayne Burdick]

paul ecker  wrote:

> A related question: What is difference between VFO IND  and VFO LNK ? 

VFO IND = NO (default) keeps VFO A and B on the same band at all times.

VFO IND = YES allows VFO B to be on a different band. This is most useful with 
the sub receiver.

VFO LNK just slaves VFO B to VFO A. As you rotate A, B moves along with it. VFO 
B can be moved off of VFO A's frequency, in which case moving VFO A will 
preserve some offset between the two. In practice this is not used very often, 
which is why VFO LNK was moved to a menu entry. This allowed us to use a 
regular HOLD of the SUB switch to get into diversity mode.

NOTE: Speaking of which, VFO LNK is *not* needed for diversity receive mode. In 
diversity, VFO A automatically controls both the main and sub receiver 
frequencies. VFO B can be used as a holding register for another part of the 
band, or for use as the TX frequency during SPLIT.

73,
Wayne
N6KR



> I ask because I recently installed the 2nd  receiver and had set VFO IND to 
> Yes. I then noticed that when trying to use the SCAN feature that when I 
> press M>V, only VFO A was being populated with the stored memory not VFO B. 
> Thus Scan would not start.
> 73 Paulkc2nyu



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Re: [Elecraft] K3S Proper Grounding

[Jim Brown]

On Thu,10/1/2015 8:11 AM, ae...@carolinaheli.com wrote::

Part of my confusion is based on this being a commercial solution that
didn't have a problem until recently.


Buying "a commercial solution" seems to mean that you're assuming that 
whoever is selling a product really understands how antennas work and 
the shortcomings of the product they're selling, so you don't have to 
understand it.  Part of being a ham is taking the time to actually learn 
how stuff works. I suggest that you study the links I posted yesterday. 
They are both tutorial and practical.



Just
have the trim and staining to finish for that. I'm also planning to run a
dedicated power cable with heavier gauge wire to get a better ground at my
station. Based on the TON of responses I've gotten I'll be running a heavy
gauge THNN or similar from outside my station (where I'll add a ground rod)
up to an antenna switch for grounding and bonding all of it together with
the main ground on the other side of the house. I'm not sure how I'll NOT
end up with a ground loop in this configuration.


While a dedicated power line to your station is a good thing, there's 
too much foggy thinking and false logic in what some have been telling 
you to do. The earth is NOT a sump into which RFI is poured. Yes, you 
should run a bonding cable from your station to a ground rod, BUT that 
rod MUST be bonded to all other grounds for safety. What these two 
measures can do for you is CONTROL where common mode current flows -- it 
will flow on that new ground wire and that new dedicated power line -- 
but that RF current will still RADIATE, and can be picked up by any 
other wires in your home, like those in your home entertainment system.


Caps added for emphasis. :)

73, Jim K9YC
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Re: [Elecraft] VFO B is tracking VFO A

[Wayne Burdick]

On Oct 1, 2015, at 9:18 AM, paul ecker  wrote:

> Wayne - Tnx for explanation. Further question. 
> VFO IND = YES allows VFO B to be on a different band. This is most useful 
> with the sub receiver.
> 
> So if I have VFO IND set to YES, does this preclude using the SCAN feature?

You can still use SCAN with VFO IND=YES as long as the two VFOs are set to the 
same band.

When you first set VFO IND=YES and try scan, you might see an error message 
(M>V REQuired) if the target scanning memory was set up prior to this. In that 
case, just set up the scanning memory again.

Wayne

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Re: [Elecraft] KS3 Proper Grounding

[Wes]

It shouldn't be "if", it should be "when."

On Oct 1, 2015, at 8:58 AM, James Wilson  wrote:

> Jer,
> 
> If you run the connecting ground around the house on the outside, you may
> consider adding several ground rods to that connecting run just to break up
> possible loops.
> 
>> ... the main ground on the other side of the house. >I'm not sure how
> I'll NOT end up with a ground loop >in this configuration.
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[Elecraft] KS3 Proper Grounding

[James Wilson]

Jer,

If you run the connecting ground around the house on the outside, you may
consider adding several ground rods to that connecting run just to break up
possible loops.

> ... the main ground on the other side of the house. >I'm not sure how
I'll NOT end up with a ground loop >in this configuration.
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Re: [Elecraft] VFO B is tracking VFO A

[paul ecker]

Wayne - Tnx for explanation. Further question. VFO IND = YES allows VFO B to be 
on a different band. This is most useful with the sub receiver.

So if I have VFO IND set to YES, does this preclude using the SCAN feature?
73 Paul
  From: Wayne Burdick 
 To: paul ecker  
Cc: "elecraft@mailman.qth.net"  
 Sent: Thursday, October 1, 2015 12:08 PM
 Subject: Re: [Elecraft] VFO B is tracking VFO A
   
paul ecker  wrote:

> A related question: What is difference between VFO IND  and VFO LNK ? 

VFO IND = NO (default) keeps VFO A and B on the same band at all times.

VFO IND = YES allows VFO B to be on a different band. This is most useful with 
the sub receiver.

VFO LNK just slaves VFO B to VFO A. As you rotate A, B moves along with it. VFO 
B can be moved off of VFO A's frequency, in which case moving VFO A will 
preserve some offset between the two. In practice this is not used very often, 
which is why VFO LNK was moved to a menu entry. This allowed us to use a 
regular HOLD of the SUB switch to get into diversity mode.

NOTE: Speaking of which, VFO LNK is *not* needed for diversity receive mode. In 
diversity, VFO A automatically controls both the main and sub receiver 
frequencies. VFO B can be used as a holding register for another part of the 
band, or for use as the TX frequency during SPLIT.

73,
Wayne
N6KR





> I ask because I recently installed the 2nd  receiver and had set VFO IND to 
> Yes. I then noticed that when trying to use the SCAN feature that when I 
> press M>V, only VFO A was being populated with the stored memory not VFO B. 
> Thus Scan would not start.
> 73 Paulkc2nyu




  
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Re: [Elecraft] ACC2

[bsusb]

I need to clarify some of my misconceptions about ACC2 and offer some 
unfortunate experience with the special cable package offered with the KXPA100 
when integrating to the KX3.

First off the GPIO function has nothing to do with interface to the amp.  
Perhaps that is why there is no reference to GPIO in the amp manual.

About a month ago I bought a KXPA100 and the special KX3 interface cable kit.

After it was hooked up to the KX3, I could not turn on the amp with a PA = ON.

The problem was a bad cable.  Cable badness was verified with the discovery of 
an unsoldered wire in the little black box that hides all the interconnects.

A new cable set was requested, arrived promptly, and solved the problem.

A week later the amp refused to work properly.  If I set the KX3 to tune and 
advanced the power past 10 watts both amp and KX3 turned themselves off.  
Obviously a power supply problem?

I tried a different power supply that was tested and known to be good but I 
still had the problem.  Turn the power past 10 watts and the radios turned 
themselves off.

That is when it occured to me that maybe setting ACC2 = ON might be needed.  Of 
course that was wrong.  By the way you should change that from ACC2 = ON/OFF  
to GPIO = ON/OFF.  Evidently the ACC2 keying line is alwas on.

This morning I replaced the short modular cable connecting the amp to the black 
connection hub on the special cable.  Everything is working as it should now.

I really like the KX3 and the pricey KXPA100.  I can't say the same for the 
cable set.

You might consider testing these special cable sets before shipping them.

On Wed, 30 Sep 2015 18:43:31 -0600
frank  wrote:

> I knew there was something I did not understand about that.
> 
> That also explains why I had do an ACC2 = ON to make the KX3 work with the 
> KXPA100.
> 
> On Wed, 30 Sep 2015 14:29:21 -0700
> Wayne Burdick  wrote:
> 
> > Frank,
> > 
> > ACC2 has two outputs: a keyline for the amp (always on), and a 
> > general-purpose programmable output (GPIO). The latter is what's controlled 
> > by the ACC2 IO menu entry. You can use this signal for various functions as 
> > described in the ACC2 IO menu entry. 
> > 
> > When the amp is used with our custom KXPA100 interface cable, the ACC2 
> > keyline signal is routed to the amp, and the GPIO signal is broken out to 
> > its own connector for your use.
> > 
> > 73,
> > Wayne
> > N6KR
> > 
> > 
> > On Sep 30, 2015, at 1:25 PM, frank  wrote:
> > 
> > > 
> > > ACC2 = OFF  appears to be a factory default.  Why?
> > > 
> > > Other rigs do not disable the amp keying line.  Why was it neccessary to 
> > > do that in the KX3?
> > > -- 
> > > Frank - K5DKZ
> > > KX3 - 7550
> > > PX3 - 1143
> > > KXPA100 - 1566
> > > __
> > > Elecraft mailing list
> > > Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> > > 
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> > > Message delivered to n...@elecraft.com
> > 
> 
> 
> -- 
> Frank - K5DKZ
> KX3 - 7550
> PX3 - 1143
> KXPA100 - 1566
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-- 
bsusb 
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Re: [Elecraft] KAT500 Fault

[dave_w0ru]

dave_w0ru wrote
> With the 
*
> KAT500
*
>  in Standby, I can tune with the KAT500 just fine.

That should read:

With the *KPA500* in Standby, 

Dave w0ru



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View this message in context: 
http://elecraft.365791.n2.nabble.com/KAT500-Fault-tp7608563p7608580.html
Sent from the Elecraft mailing list archive at Nabble.com.
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[Elecraft] Update: K3 Issues Since Synthesizer Upgrade

[Dennis]

Several days ago I posted the below to the Reflector.  After a couple of 
days of reproducing the below errors,
I can safely say that NONE of them are connected to the Synthesizer 
Upgrade.  Since they all happened
since the upgrade I made the incorrect assumption that that had 
something to do with the new problems.


#1- DVK- Cockpit error.  M1 and M2 did not have a message recorded in 
them, so gave incorrect responses
when I tried to play those message.  Recorded messages in both, all work 
normally.

#2- No resolution to this yet.
#3- Could not reproduce the error.  May be tied to #5.
#4- This is how the radio is supposed to function.  Hit a key that can't 
execute when you're transmitting, and

the K3 is supposed to stop transmitting and give the errors.
#5- This seems to be an N1MMLogger+ error, but hasn't been confirmed 
yet.  The DSE errors seemed to
be created in the K3 by bad input from N1MM+; in any case, the two got 
out of sync, and the DSE errors

were created.
#6- Diversity was a red herring.  I could reproduce the problems whether 
diversity was on or off.  During the
contest, problems didn't seem to start until diversity was turned on, 
but further research shows that diversity

had nothing to with any problems.
#7- Same as #6.

The Synthesizer upgrade didn't have anything to do with the problems I had.

Dennis W1UE
---
I did the Synthesizer on my K3 a couple of weeks ago.  After putting in 
the synthesizers, I also upgraded to Firmware 5.33, which was the latest 
at the time (I see that 5.35 was released the day after I did the 
upgrade).  The SYNTH OK messages were seen on the menu, and the 
configuration was redone as specified in the instructions.  I also took 
care not to lose any washers inside the radio, and to not disturb 
anything within the radio.  Since then, I have had a number of issues 
with my K3.


#1- DVK doesn't work via N1MM command.  VFO B says "DVK Not installed", 
but I do have one installed. I can also play the messages by pressing 
the Message key.  I checked the config menu, and it says it is installed.

#2- I have heard a number of loud audio "pops" since the above changes.
#3- I have actually lost audio several times with no VFO B errors- audio 
just stops in the middle of a QSO.
#4- During CQWW RTTY, if I was transmitting and pushed a key- say A/B, 
or Rev- transmitting stops, I get an "Error PTT" followed by an "Error 
Key" in the VFO B window for a few seconds each, then the radio clears 
itself.  I can then resume transmitting.  No audio loss while this is 
happening.
#5- During the contest, N1MM would show the Radio Mode as PSK.  The 
program would keep on transmitting RTTY, and what went into the log was 
indicated as RTTY, the K3 was working properly in RTTY and indicated it 
was in Mode D FSK correctly.
#6- When I tried to use Diversity reception, the K3 would switch into 
Diversity mode correctly.  After a while, I would get a sudden total 
audio loss and one of several DSE errors: E01, E00,  00C2C2, 
003030.

#7- Turning the diversity OFF seemed to decrease the severity of
In all cases, power cycling the radio would clear the error and the 
audio would be restored.


I've tried reloading firmware, and it reloaded without a problem.  Yes, 
I power cycled the radio immediately after the firmware update was 
done.  I haven't tried downloading the firmware a second time from the 
web site, and then reloading it into the radio but I suspect that may be 
the next thing that I try.


At this point, I'm open to suggestions.  Thanks for input!

Dennis W1UE


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[Elecraft] The KSYN3A synth will always be available as a K3 upgrade

[Wayne Burdick]

Hi all,

Just to put an end to any unfounded rumors: The KSYN3A will always be available 
for K3 upgrades. We use the same synth module in the K3S, and there is no end 
date.

73,
Wayne
N6KR


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Re: [Elecraft] K3S Proper Grounding

[Guy Olinger K2AV]

On Thu, Oct 1, 2015 at 12:58 PM, Jim Brown 
wrote:

> What these two measures can do for you is CONTROL where common mode
> current flows -- it will flow on that new ground wire and that new
> dedicated power line -- but that RF current will still RADIATE, and can be
> picked up by any other wires in your home, like those in your home
> entertainment system.


It's even worse, as true what Jim says is.

Short version:

Common mode current messes up BOTH transmit and receive. Don't buy junk
baluns and blockers. Insist on response curves from manufacturer. Never
ever go cheep on baluns and blocking. Either buy or make the good stuff.

Long version:

The common mode path is a two way street. Many find attic antennas very
noisy because they hear all the RF noise from all the stuff in the house.
Changing to an outside antenna even a little ways from the house reduces
that noise immensely.

If a common mode path is open, it's an open road from the house to the
antenna for house noise. At the antenna the house noise is added to the
reception, making it much noisier.

A common mode block working well enough to stop TX interference often still
hasn't enough blocking to prevent the reverse path from raising your RX
noise level.

Designing your station to eliminate ground and common mode problems, before
installing anything, will save you much consternation in the future.

Understand there are companies who advertise in national magazines who sell
junk baluns and junk common mode blocking devices. Or they say all-band
when they barely cover down to 40 meters, if that. They are sure we are a
bunch of dumb clucks who can't possibly tell the difference. Prove them
wrong. Caveat Emptor.

Buy from manufacturers that publish the response curves, with actual dB
values, on all their devices. Ignore everyone else.

73, Guy K2AV
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Re: [Elecraft] ACC2

[Wayne Burdick]

Frank,

I'm sorry to hear that the cables had to be replaced. This is very unusual. We 
have them custom made and they're supposed to be 100% tested. I'll get this 
feedback to our manufacturing supervisor.

73,
Wayne
N6KR


On Oct 1, 2015, at 10:10 AM, bsusb  wrote:

> 
> I need to clarify some of my misconceptions about ACC2 and offer some 
> unfortunate experience with the special cable package offered with the 
> KXPA100 when integrating to the KX3.
> 
> ...You might consider testing these special cable sets before shipping them.



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Re: [Elecraft] Update: K3 Issues Since Synthesizer Upgrade

[Wayne Burdick]

OK, Dennis, I'll try to reproduce this.

Wayne
N6KR


On Oct 1, 2015, at 11:14 AM, Dennis  wrote:

> Wayne
> 
> I've tried to reproduce #2 with no luck.  It happened several times during 
> the contest, but I couldn't draw
> any conclusions with what I was doing and the pops.  I've played with the K3 
> for several hours after the
> contest but have not had the pops reoccur.
> 
> #4 is easily reproduced.  In SSB mode, activate the PTT.  Push the REV key, 
> and one of two things happens:
> if you keep the radio keyed, ERR PTT shows on VFO B until you unkey it, then 
> its followed by ERR KEY….
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Re: [Elecraft] K3S Proper Grounding

[Eric Swartz - WA6HHQ, Elecraft]

We're had a lot of posts on this topic. Ltt's let it rest for now in the 
interest of relieving list email overload for others.


thread closed.

73,
Eric
/Moderator etc.
elecraft.com/


On 10/1/2015 9:58 AM, Jim Brown wrote:

On Thu,10/1/2015 8:11 AM, ae...@carolinaheli.com wrote::

Part of my confusion is based on this being a commercial solution that
didn't have a problem until recently.


Buying "a commercial solution" seems to mean that you're assuming that whoever 
is selling a product really understands how antennas work and the shortcomings 
of the product they're selling, so you don't have to understand it.  Part of 
being a ham is taking the time to actually learn how stuff works. I suggest 
that you study the links I posted yesterday. They are both tutorial and 
practical.


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Re: [Elecraft] Update: K3 Issues Since Synthesizer Upgrade

[Dennis]

Wayne

I've tried to reproduce #2 with no luck.  It happened several times 
during the contest, but I couldn't draw
any conclusions with what I was doing and the pops.  I've played with 
the K3 for several hours after the

contest but have not had the pops reoccur.

#4 is easily reproduced.  In SSB mode, activate the PTT.  Push the REV 
key, and one of two things happens:
if you keep the radio keyed, ERR PTT shows on VFO B until you unkey it, 
then its followed by ERR KEY.
Happens with any key that doesn't function when you're transmitting.  
When it happened during the RTTY contest,
the K3 would stop transmitting, ERR PTT would show for about 5 seconds, 
then followed by ERR KEY for

about another 5 seconds.  Then I could transmit again.

Firmware 5.33 and 5.35 did it the same- currently using 5.35.  For what 
I just did, the K3 was standing alone-

there was no computer connection.  Config:PTT-Key is off/off.

When I received your email, I went out to confirm what I had already 
written.  Now I find my K3 says "NO DVR"
in response to pushing M1 to M4, while yesterday it worked perfectly.  
Not sure what is happening here.


Dennis W1UE

On 10/1/2015 1:53 PM, Wayne Burdick wrote:

Hi Dennis,


#2- I have heard a number of loud audio "pops" since the above changes.

Please email me directly with a description of how these pops can be produced, 
i.e. what controls you're using at the time.



#4- During CQWW RTTY, if I was transmitting and pushed a key- say A/B, or Rev- transmitting stops, 
I get an "Error PTT" followed by an "Error Key" in the VFO B window for a few 
seconds each, then the radio clears itself.  I can then resume transmitting.  No audio loss while 
this is happening.

This shouldn't happen. I've been trying to reproduce it. Again, let me know 
exactly how the rig is set up and whether there's a way to consistently 
reproduce it.

73,
Wayne
N6KR



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Re: [Elecraft] K3S Proper Grounding

[Merv Schweigert]

This whole thread is quite amusing,  no matter how much explanation takes
place, people still believe a ground rod is RF ground .

Then the poor guy with the problem who states "nothing has changed"
admits he has not grounded the station gear yet.  but it was before.
Talk about a lot of posting for nothing.
I hope some of you will at least read and learn, there has been some 
great info

put forth in this thread,  and from the replies one can tell that some
still dont get it.

Thanks to Jim and others who have the patience to keep going over and over
the facts trying to educate.  Hope some of it sinks in,
73 Merv K9FD/KH6   WH2XCR



10/1/2015 8:11 AM, ae...@carolinaheli.com wrote::

Part of my confusion is based on this being a commercial solution that
didn't have a problem until recently.


Buying "a commercial solution" seems to mean that you're assuming that 
whoever is selling a product really understands how antennas work and 
the shortcomings of the product they're selling, so you don't have to 
understand it.  Part of being a ham is taking the time to actually 
learn how stuff works. I suggest that you study the links I posted 
yesterday. They are both tutorial and practical.



Just
have the trim and staining to finish for that. I'm also planning to 
run a
dedicated power cable with heavier gauge wire to get a better ground 
at my
station. Based on the TON of responses I've gotten I'll be running a 
heavy
gauge THNN or similar from outside my station (where I'll add a 
ground rod)
up to an antenna switch for grounding and bonding all of it together 
with
the main ground on the other side of the house. I'm not sure how I'll 
NOT

end up with a ground loop in this configuration.


While a dedicated power line to your station is a good thing, there's 
too much foggy thinking and false logic in what some have been telling 
you to do. The earth is NOT a sump into which RFI is poured. Yes, you 
should run a bonding cable from your station to a ground rod, BUT that 
rod MUST be bonded to all other grounds for safety. What these two 
measures can do for you is CONTROL where common mode current flows -- 
it will flow on that new ground wire and that new dedicated power line 
-- but that RF current will still RADIATE, and can be picked up by any 
other wires in your home, like those in your home entertainment system.


Caps added for emphasis. :)

73, Jim K9YC
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Re: [Elecraft] Update: K3 Issues Since Synthesizer Upgrade

[Wayne Burdick]

Hi Dennis,

> #2- I have heard a number of loud audio "pops" since the above changes.

Please email me directly with a description of how these pops can be produced, 
i.e. what controls you're using at the time.


> #4- During CQWW RTTY, if I was transmitting and pushed a key- say A/B, or 
> Rev- transmitting stops, I get an "Error PTT" followed by an "Error Key" in 
> the VFO B window for a few seconds each, then the radio clears itself.  I can 
> then resume transmitting.  No audio loss while this is happening.

This shouldn't happen. I've been trying to reproduce it. Again, let me know 
exactly how the rig is set up and whether there's a way to consistently 
reproduce it.

73,
Wayne
N6KR

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Re: [Elecraft] Update: K3 Issues Since Synthesizer Upgrade

[Guy Olinger K2AV]

About #2, make sure you did not accidentally have the AGC off. If you like
to operate without AGC, you can set the AGC to not cut in until a signal is
quite loud, and then holds anything higher to the same level. It's kind of
like AGC OFF with a safety valve.

73, Guy K2AV

On Thu, Oct 1, 2015 at 1:30 PM, Dennis  wrote:

> Several days ago I posted the below to the Reflector.  After a couple of
> days of reproducing the below errors,
> I can safely say that NONE of them are connected to the Synthesizer
> Upgrade.  Since they all happened
> since the upgrade I made the incorrect assumption that that had something
> to do with the new problems.
>
> #1- DVK- Cockpit error.  M1 and M2 did not have a message recorded in
> them, so gave incorrect responses
> when I tried to play those message.  Recorded messages in both, all work
> normally.
> #2- No resolution to this yet.
> #3- Could not reproduce the error.  May be tied to #5.
> #4- This is how the radio is supposed to function.  Hit a key that can't
> execute when you're transmitting, and
> the K3 is supposed to stop transmitting and give the errors.
> #5- This seems to be an N1MMLogger+ error, but hasn't been confirmed yet.
> The DSE errors seemed to
> be created in the K3 by bad input from N1MM+; in any case, the two got out
> of sync, and the DSE errors
> were created.
> #6- Diversity was a red herring.  I could reproduce the problems whether
> diversity was on or off.  During the
> contest, problems didn't seem to start until diversity was turned on, but
> further research shows that diversity
> had nothing to with any problems.
> #7- Same as #6.
>
> The Synthesizer upgrade didn't have anything to do with the problems I had.
>
> Dennis W1UE
>
> ---
> I did the Synthesizer on my K3 a couple of weeks ago.  After putting in
> the synthesizers, I also upgraded to Firmware 5.33, which was the latest at
> the time (I see that 5.35 was released the day after I did the upgrade).
> The SYNTH OK messages were seen on the menu, and the configuration was
> redone as specified in the instructions.  I also took care not to lose any
> washers inside the radio, and to not disturb anything within the radio.
> Since then, I have had a number of issues with my K3.
>
> #1- DVK doesn't work via N1MM command.  VFO B says "DVK Not installed",
> but I do have one installed. I can also play the messages by pressing the
> Message key.  I checked the config menu, and it says it is installed.
> #2- I have heard a number of loud audio "pops" since the above changes.
> #3- I have actually lost audio several times with no VFO B errors- audio
> just stops in the middle of a QSO.
> #4- During CQWW RTTY, if I was transmitting and pushed a key- say A/B, or
> Rev- transmitting stops, I get an "Error PTT" followed by an "Error Key" in
> the VFO B window for a few seconds each, then the radio clears itself.  I
> can then resume transmitting.  No audio loss while this is happening.
> #5- During the contest, N1MM would show the Radio Mode as PSK.  The
> program would keep on transmitting RTTY, and what went into the log was
> indicated as RTTY, the K3 was working properly in RTTY and indicated it was
> in Mode D FSK correctly.
> #6- When I tried to use Diversity reception, the K3 would switch into
> Diversity mode correctly.  After a while, I would get a sudden total audio
> loss and one of several DSE errors: E01, E00,  00C2C2, 003030.
> #7- Turning the diversity OFF seemed to decrease the severity of
> In all cases, power cycling the radio would clear the error and the audio
> would be restored.
>
> I've tried reloading firmware, and it reloaded without a problem.  Yes, I
> power cycled the radio immediately after the firmware update was done.  I
> haven't tried downloading the firmware a second time from the web site, and
> then reloading it into the radio but I suspect that may be the next thing
> that I try.
>
> At this point, I'm open to suggestions.  Thanks for input!
>
> Dennis W1UE
>
>
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Re: [Elecraft] Update: K3 Issues Since Synthesizer Upgrade

[David Cole]

I got a few of the ERR KEY messages as well, I am unable to reproduce
them as well...
-- 
Thanks and 73's,
For equipment, and software setups and reviews see:
www.nk7z.net

For MixW support see;
http://groups.yahoo.com/neo/groups/mixw/info
For Dopplergram information see:
http://groups.yahoo.com/neo/groups/dopplergram/info
For MM-SSTV see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info


On Thu, 2015-10-01 at 10:53 -0700, Wayne Burdick wrote:
> Hi Dennis,
> 
> > #2- I have heard a number of loud audio "pops" since the above changes.
> 
> Please email me directly with a description of how these pops can be 
> produced, i.e. what controls you're using at the time.
> 
> 
> > #4- During CQWW RTTY, if I was transmitting and pushed a key- say A/B, or 
> > Rev- transmitting stops, I get an "Error PTT" followed by an "Error Key" in 
> > the VFO B window for a few seconds each, then the radio clears itself.  I 
> > can then resume transmitting.  No audio loss while this is happening.
> 
> This shouldn't happen. I've been trying to reproduce it. Again, let me know 
> exactly how the rig is set up and whether there's a way to consistently 
> reproduce it.
> 
> 73,
> Wayne
> N6KR
> 
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Re: [Elecraft] K3S Proper Grounding

[ae4pb]

Ouch

Please discontinue this thread. I'll keep the rest of what I want to say to
myself. 

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Merv Schweigert
Sent: Thursday, October 01, 2015 1:30 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3S Proper Grounding

This whole thread is quite amusing,  no matter how much explanation takes
place, people still believe a ground rod is RF ground .

Then the poor guy with the problem who states "nothing has changed"
admits he has not grounded the station gear yet.  but it was before.
Talk about a lot of posting for nothing.
I hope some of you will at least read and learn, there has been some great
info put forth in this thread,  and from the replies one can tell that some
still dont get it.

Thanks to Jim and others who have the patience to keep going over and over
the facts trying to educate.  Hope some of it sinks in,
73 Merv K9FD/KH6   WH2XCR



10/1/2015 8:11 AM, ae...@carolinaheli.com wrote::
>> Part of my confusion is based on this being a commercial solution 
>> that didn't have a problem until recently.
>
> Buying "a commercial solution" seems to mean that you're assuming that 
> whoever is selling a product really understands how antennas work and 
> the shortcomings of the product they're selling, so you don't have to 
> understand it.  Part of being a ham is taking the time to actually 
> learn how stuff works. I suggest that you study the links I posted 
> yesterday. They are both tutorial and practical.
>
>> Just
>> have the trim and staining to finish for that. I'm also planning to 
>> run a dedicated power cable with heavier gauge wire to get a better 
>> ground at my station. Based on the TON of responses I've gotten I'll 
>> be running a heavy gauge THNN or similar from outside my station 
>> (where I'll add a ground rod) up to an antenna switch for grounding 
>> and bonding all of it together with the main ground on the other side 
>> of the house. I'm not sure how I'll NOT end up with a ground loop in 
>> this configuration.
>
> While a dedicated power line to your station is a good thing, there's 
> too much foggy thinking and false logic in what some have been telling 
> you to do. The earth is NOT a sump into which RFI is poured. Yes, you 
> should run a bonding cable from your station to a ground rod, BUT that 
> rod MUST be bonded to all other grounds for safety. What these two 
> measures can do for you is CONTROL where common mode current flows -- 
> it will flow on that new ground wire and that new dedicated power line
> -- but that RF current will still RADIATE, and can be picked up by any 
> other wires in your home, like those in your home entertainment system.
>
> Caps added for emphasis. :)
>
> 73, Jim K9YC
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Re: [Elecraft] The KSYN3A synth will always be available as a K3 upgrade

[David Cole]

Wayne,
THANK YOU!  That mindset youhave is why I bought Elecraft!
-- 
Thanks and 73's,
For equipment, and software setups and reviews see:
www.nk7z.net

For MixW support see;
http://groups.yahoo.com/neo/groups/mixw/info
For Dopplergram information see:
http://groups.yahoo.com/neo/groups/dopplergram/info
For MM-SSTV see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info


On Thu, 2015-10-01 at 11:54 -0700, Wayne Burdick wrote:
> Hi all,
> 
> Just to put an end to any unfounded rumors: The KSYN3A will always be 
> available for K3 upgrades. We use the same synth module in the K3S, and there 
> is no end date.
> 
> 73,
> Wayne
> N6KR
> 
> 
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[Elecraft] K3/P3 issue

[David Cole]

Perhaps I missed the answer to this...

My SVGA external monitor shows signals about 1/2 to one S unit lower
than my P3 does on the native screen...  What am I missing?

If I use Peak Hold, there is a clear 1/2 to one S-Unit difference in teh
display height...
-- 
Thanks and 73's,
For equipment, and software setups and reviews see:
www.nk7z.net

For MixW support see;
http://groups.yahoo.com/neo/groups/mixw/info
For Dopplergram information see:
http://groups.yahoo.com/neo/groups/dopplergram/info
For MM-SSTV see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info



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[Elecraft] P3 Problem

[Ken Widelitz]

My P3 can't seem to remember its firmware. When I turn it on, it looks
right, but as soon as I press Ref Level, it goes into the P3 Boot Loader
screen. I've reloaded the firmware (latest) 3 times and the same thing keeps
happening. I have disconnected and reconnected the power cable to no avail.

 

73, Ken, K6LA / VY2TT

 

 

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Re: [Elecraft] K3S Proper Grounding

[Eric Swartz - WA6HHQ, Elecraft]

This thread was closed over 2 hours ago.
73,
Eric
/elecraft.com/

On 10/1/2015 12:18 PM, ae...@carolinaheli.com wrote:

Ouch

Please discontinue this thread. I'll keep the rest of what I want to say to
myself.



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Re: [Elecraft] P3 Problem

[Paul Saffren N6HZ]

Hi Ken, 

A 'parameter reset' should solve the problem.  Hold down the MENU button
while pressing the POWER button.  This will reinitialize all the parameters
to their default values.  

73, 

Paul




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[Elecraft] Fwd: P3 Problem

[Jerry Wright]

Sent from Jerry's iPhone


Begin forwarded message:

> From: Paul Saffren N6HZ 
> Date: October 1, 2015 at 1:41:23 PM PDT
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] P3 Problem
> 
> Hi Ken, 
> 
> A 'parameter reset' should solve the problem.  Hold down the MENU button
> while pressing the POWER button.  This will reinitialize all the parameters
> to their default values.  
> 
> 73, 
> 
> Paul
> 
> 
> 
> 
> --
> View this message in context: 
> http://elecraft.365791.n2.nabble.com/P3-Problem-tp7608603p7608607.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] ACC2

[Jack Hodges]

Wow I am thoroughly amazed at the fact that any reseller is listening to their 
customer base.  I feel fortunate and proud to own your products. 

N5NIS

Sent from my iPhone

> On Oct 1, 2015, at 2:04 PM, Wayne Burdick  wrote:
> 
> Frank,
> 
> I'm sorry to hear that the cables had to be replaced. This is very unusual. 
> We have them custom made and they're supposed to be 100% tested. I'll get 
> this feedback to our manufacturing supervisor.
> 
> 73,
> Wayne
> N6KR
> 
> 
>> On Oct 1, 2015, at 10:10 AM, bsusb  wrote:
>> 
>> 
>> I need to clarify some of my misconceptions about ACC2 and offer some 
>> unfortunate experience with the special cable package offered with the 
>> KXPA100 when integrating to the KX3.
>> 
>> ...You might consider testing these special cable sets before shipping them.
> 
> 
> 
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Re: [Elecraft] K3/P3 issue

[Paul Saffren N6HZ]

Hi David, 

Check your inbox/spam folder, I emailed you directly on this.  

-Paul



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Re: [Elecraft] ACC2

[bsusb]

Wayne,

Thanks.  Your radio products are too good in quality and performance to get 
undeserved black eyes from faulty cable sets.

Could very well have been a one-off.

On Thu, 1 Oct 2015 12:04:01 -0700
Wayne Burdick  wrote:

> Frank,
> 
> I'm sorry to hear that the cables had to be replaced. This is very unusual. 
> We have them custom made and they're supposed to be 100% tested. I'll get 
> this feedback to our manufacturing supervisor.
> 
> 73,
> Wayne
> N6KR
> 
> 
> On Oct 1, 2015, at 10:10 AM, bsusb  wrote:
> 
> > 
> > I need to clarify some of my misconceptions about ACC2 and offer some 
> > unfortunate experience with the special cable package offered with the 
> > KXPA100 when integrating to the KX3.
> > 
> > ...You might consider testing these special cable sets before shipping them.
> 
> 
> 


-- 
bsusb 
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Re: [Elecraft] K3/P3 issue

[David Cole]

Nothing, but THANK YOU...  Can you remail me please...
-- 
Thanks and 73's,
For equipment, and software setups and reviews see:
www.nk7z.net

For MixW support see;
http://groups.yahoo.com/neo/groups/mixw/info
For Dopplergram information see:
http://groups.yahoo.com/neo/groups/dopplergram/info
For MM-SSTV see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info


On Thu, 2015-10-01 at 13:36 -0700, Paul Saffren N6HZ wrote:
> Hi David, 
> 
> Check your inbox/spam folder, I emailed you directly on this.  
> 
> -Paul
> 
> 
> 
> --
> View this message in context: 
> http://elecraft.365791.n2.nabble.com/K3-P3-issue-tp7608605p7608606.html
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Re: [Elecraft] KAT500 Fault

[Cady, Fred]

Hi Dave, 
I don't have the full context of your note but here is some information that 
may help:

3.9.5   Tuner Fault Conditions
The FAULT LED being lit does not mean there is an equipment failure to cause 
you concern.  Rather, it indicates a condition that you should correct.
A fault will occur, and the FAULT LED will light under the following conditions:
•   If the RF drive power exceeds 110 watts during a tune operation.  This 
can happen if your amplifier outputs more than 110 watts and the KAT500 does 
not interrupt the keying line while it is tuning.  You should be using a K3–KPA 
Cable as shown in Figure 3 4 or a separate keying line cable as shown in Figure 
3 3.  Note that the KAT500 will not open the keying line if the power input to 
the tuner is greater than 30 watts unless you have configured it as shown in 
Section 3.8.
•   The VSWR of the antenna is higher than the configured Amplifier Key 
Interrupt VSWR Threshold and the red FAULT LED illuminates.  If this occurs, 
the amplifier’s keying line is interrupted.
This fault may occur frequently while the tuner is tuning and will be cleared 
automatically when the tuner is finished and a transmission occurs where the 
VSWR is about 10% lower than the threshold.  If the fault persists, press any 
KAT500 key, change bands, antenna or KAT500 mode, or fix the antenna problem 
and transmit again.  Because this fault may occur frequently, and normally, 
when tuning, it is not written into the fault log.
•   The impedance is outside the normal tuning range (see Table 3.1) but 
the KAT500 is able to match it.  In this case, you should reduce the power as 
needed to protect the KAT500.
To reset a fault, tap the TUNE switch or switch the power off and then on by 
holding the MODE switch. 

73,
Fred KE7X

Author of:
"The Elecraft K3: Design, Configuration and Operation 2nd ed"
"The Portable Elecraft KX3 – Going for the Summit with the KX3 and KX3-2M/4M"
“The Elecraft KX-Line – The Complete Station”
“The Elecraft KPA500 and KAT500 – the K-Line Dream Station”
Printed, coil bound copies of these are all available at www.elecraft.com
KPA500 and KAT500 Quick Set Up Guide
http://www.ke7x.com/home/k-line-introduction-and-set-up-guide

KAT500 and KXPA500 Tuner Operation
http://www.ke7x.com/home/kat500-and-kxpa100-tuners

“The Elecraft KXPA100, PX3 and 2M/4M Transverters – Assembling the KX3-Line 
Station” available at www.lulu.com.

“The Elecraft K3S and P3 – Getting the Most out from Your High Performance 
Station”  coming very soon.
A book dedicated to the K3S upgrades for the K3 and a 3rd Edition of the K3 
book are works in progress.




From: elecraft-boun...@mailman.qth.net  on 
behalf of dave_w0ru 
Sent: Thursday, October 1, 2015 9:32 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KAT500 Fault

dave_w0ru wrote
> With the
*
> KAT500
*
>  in Standby, I can tune with the KAT500 just fine.

That should read:

With the *KPA500* in Standby,

Dave w0ru



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[Elecraft] Strange K3 microphone /PTT fault

[john petters]

Greetings folks,
I'm puzzled. my 7 year old K3 did two strange things this evening.

During a CW QSO on 21MHz, it appeared not to go back into receive and
required power off and on to operate. The QSO finished.

Then, in the middle of a USB QSO on 5MHz - mid transmission, it went
back to receive and the PTT would not go back to TX, nor did the Vox work.

I can operate the PTT on the back socket of the rig, and by grounding
pin 2 on the 8 pin mic connector.

On measuring the pins 7 & 8, which should go to ground, these seem to be
floating and not grounded.

I've just looked at the circuit and it shows these pins going to ground.

Any suggestions?

73
-- 
John Petters
Amateur Radio Station G3YPZ
www.traditional-jazz.com
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Re: [Elecraft] K3/P3 issue

[Alan]

For a continuous CW tone, the level should be the same on the P3 and the 
external monitor.  For SSB, the SVGA display should read 1/2 S-unit lower.


The reason is that, unlike CW, an SSB signal is spread out in frequency. 
 Since the SVGA monitor has twice the frequency resolution than the P3 
main screen, each display point only covers half the bandwidth.  So you 
would expect it to read 3 dB lower (half the power), which is half an S 
unit.


Alan N1AL


On 10/01/2015 01:11 PM, David Cole wrote:

Perhaps I missed the answer to this...

My SVGA external monitor shows signals about 1/2 to one S unit lower
than my P3 does on the native screen...  What am I missing?

If I use Peak Hold, there is a clear 1/2 to one S-Unit difference in teh
display height...


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Re: [Elecraft] Strange K3 microphone /PTT fault

[Matt Zilmer]

Hi John,

If it were me, I'd reseat the front panel assembly to the RF board.  I
had to do this many moons ago (like 8 years...) one time and it fixed
the problem.  The only guess I have for what's wrong is some minor
corrosion on on some of the front panel pins.

John, I hope this does it for you.  Can't think of anything else.

73!
matt
W6NIA

On Fri, 2 Oct 2015 00:19:40 +0100, you wrote:

>Greetings folks,
>I'm puzzled. my 7 year old K3 did two strange things this evening.
>
>During a CW QSO on 21MHz, it appeared not to go back into receive and
>required power off and on to operate. The QSO finished.
>
>Then, in the middle of a USB QSO on 5MHz - mid transmission, it went
>back to receive and the PTT would not go back to TX, nor did the Vox work.
>
>I can operate the PTT on the back socket of the rig, and by grounding
>pin 2 on the 8 pin mic connector.
>
>On measuring the pins 7 & 8, which should go to ground, these seem to be
>floating and not grounded.
>
>I've just looked at the circuit and it shows these pins going to ground.
>
>Any suggestions?
>
>73
Matt Zilmer, W6NIA
--
"Always store beer in a dark place."  -R. Heinlein

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Re: [Elecraft] Strange K3 microphone /PTT fault

[Lyle Johnson]

If Pins 7 and 8 are connected together (verify with ohm meter) but not 
connected to the mic jack shell, you may wish to remove the front panel 
assembly and look just above the Mic Jack at a component labeled "L4".  
It should be a short.  If it is broken, or other than a short, replace 
it with a short length of wire to jumper it, or otherwise jumper pins 7 
and 8 to ground nearby.


K3 product produced starting sometime in 2012 did not have this 
component; earlier ones did and required the jumper.


73,

Lyle KK7P

...
I can operate the PTT on the back socket of the rig, and by grounding
pin 2 on the 8 pin mic connector.

On measuring the pins 7 & 8, which should go to ground, these seem to be
floating and not grounded.

I've just looked at the circuit and it shows these pins going to ground.

Any suggestions?

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Re: [Elecraft] KAT500 Fault

[dave_w0ru]

Fred,
I am now trying the KAT500 output going to a dummy load. When the K3 is set
at about 22 watts out, the KPA500 shows 440 Watts out. When I use the Tune
feature on the K3 with Manual Tune feature on the KAT500, there is no fault.
However, when I send with the K3 keyer and with Manual Tune on the KAT500, 
I get a fault on the KAT500. Using the KAT500 utility, I find Fault Code 03
- VFWD above relay hotswitch limit - VFWD 1551 VRFL 0 SWR 1.00 SWRB 1.00. Is
the moral of the story to use the K3 Tune control, not the K3 keyer?

73 de Dave w0ru



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Re: [Elecraft] K3S Proper Grounding

[CUTTER DAVID]

I think we are drifting off topic, my apologies, but if you are considering an
ocf dipole you can only prevent common mode currents by use of a double wound
balun, ie 2 separately made chokes connected together as a 4:1.  A single core
version does not properly cancel the common mode current that results in
unwanted radiation from your coax feeder and can make your equipment live to rf.
 A huge amount of work has been done on this subject by DJ0IP and I suggest you
look at his site

http://www.dj0ip.de/balun-stuff/ is a good place to start.

The proof of the pudding is in the eating and I have not seen anyone do real
world measurements like he has on real aerials.  

David

G3UNA

> 
> On 30 September 2015 at 20:51 Jerry Moore  wrote:
> 
> 
> What I don't understand is my previous radio didn't affect the TV as far
> as I know (xyl never complained) so it has me perplexed because the radio
> shouldn't matter. As far as the buckmaster ocf, it uses a current transformer
> (auto-transformer )to balance the antenna and match the impedance.
> Jer
> 
> On September 28, 2015 1:37:16 PM EDT, Jim Brown
>  wrote:
> >On Mon,9/28/2015 9:35 AM, dw wrote:
> >> If a tuner is located at the rig-side of the coax, and the coax is at
> >> high SWR, it could possibly be a cause for coax radiation.
> >
> >It doesn't work that way.
> >
> >Radiation from coax is the result of IMBALANCE in the antenna. A
> >ferrite
> >common mode choke at the feedpoint can fix that.
> >
> >73, Jim K9YC
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Re: [Elecraft] Update: K3 Issues Since Synthesizer Upgrade

[Wayne Burdick]

> #4 is easily reproduced.  In SSB mode, activate the PTT.  Push the REV key, 
> and one of two things happens:
> if you keep the radio keyed, ERR PTT shows on VFO B until you unkey it, then 
> its followed by ERR KEY.
> Happens with any key that doesn't function when you're transmitting.  When it 
> happened during the RTTY contest,
> the K3 would stop transmitting, ERR PTT would show for about 5 seconds, then 
> followed by ERR KEY for
> about another 5 seconds.  Then I could transmit again.

Dennis,

This was indeed a bug. Thanks for catching it. 

These error messages (ERR PTT/ERR KEY) were only intended to appear in the case 
where PTT-KEY via a PC is in use, and the operator is trying to escape such 
keying by tapping the XMIT switch (one way to exit transmit). While an error 
message is displayed, the user can even go into the menu and turn off PTT-KEY 
if necessary. If this makes the error message disappear, then you know your PC 
is what was keying the rig.

The fix will be in the next K3/K3S firmware release.

73,
Wayne
N6KR


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[Elecraft] KXBC3 Clock accuracy

[Pierre]

Hi to all

The accuracy of the KXBC3 clock is at best marginal ...

But ... Looking at the schematic of the KXBC3, the real time clock seems  
to be a part of chip PIC24F16KA10. And a reference to that chip says this:


29.3.9 Calibration
The real-time crystal input can be calibrated using the periodic  
auto-adjust feature. When
properly calibrated, the RTCC can provide an error of less than 3 seconds  
per month. This is
accomplished by finding the number of error clock pulses and storing the  
value into the lower half
of the RCFGCAL register. The 8-bit signed value loaded into the lower half  
of RCFGCAL is
multiplied by four and will be either added or subtracted from the RTCC  
timer, once every minute.

Refer to the steps below for RTCC calibration

(Reference: http://ww1.microchip.com/downloads/en/DeviceDoc/39696b.pdf )

So I wonder if some calibration could be done via a software mod. My KXBC3  
clock gain about 15 seconds per week ... far away from 3 seconds per month  
... ??


73 de Pierre VE2PID


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