Re: [Elecraft] KX3 beta firmware rev. 2.38: 15 Watts max output on 80-20 m, and PSK63 mode

[Howard Hoyt]

Hi Don,

Running the new software revision on our development units here (s/n 
1403 & 7420), we see 15W output on 80-20M, with the KX3 pulling 2.2-2.5A 
depending on SWR.  The voltage readings below are the average observed 
on two different KX3s on 40M powered by a Pro Audio Engineering Kx33:


Voltage at the DC jack measured on an HP34401A:
Rcv: 14.45 VDC
Xmit: 14.15 VDC

Voltage from the KX3 display PS value:
Rcv: 14.1 VDC
Xmit: 13.5 VDC

The lower readings on the KX3's display are due to the polarity 
protection diode and other I*R voltage drops /internal/ to the KX3.  
Elecraft's spec for the 15W power level specifies a supply which can 
deliver /at the DC power jack/ at least 13.8V at the 2.3-2.5A level 
needed for 15W output.  The PAE-Kx33 design will deliver at the DC power 
plug 3A at >14.0V, and 4A at >13.9V.


If your Kx33 supply  is not delivering better than 13.8V at the plug 
running 15W then please contact us!


Cheers & 73,

Howie - WA4PSC
www.proaudioeng.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] Upgrades best done at the factory.

[Gary Smith]

I've already placed the order for a K3s/10 and will be ordering the 
Amp and ATU which I can migrate to the K3s. I understand they now 
make a mod on one of the components to allow a transverter to listen 
to the new band. Does this mod also have to be present in the sub Rx?

I would want this option completed in the in the older rig as well, 
as I want to sell it with the mod but also want it in my K3s upgrade 
with Sub Rx. If a mod to a legacy piece (Sub Rx) needs it done at the 
factory. then I need to send my Sub unit out so they can work on it 
in a timely manner.

I earlier bought a DVR but never installed it I will have it 
installed in the K3s.

I enjoyed the kit aspect of the K3 and it went 100% with no hassles I 
do though think that this time I'll get the new K3s, factory 
assembled, stock amp and tuner & put that in, myself. My only concern 
is needed mods since Jan of 2014 need to be done on my K3s and in the 
K3 as well by myself. I will be selling my K3 when it is brought up 
to all up to the new factory specs. The only real issue is how happy 
people are to be happy to be to do this for me. And importantly and 
how much effort will it require from me?

Looking forward to getting a K3S and enjoying the marked better 
audio,

73,

Gary
KA1J
__
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] Using K3 with HRD

[James Wilson]

Using a K3
KIO3 B (The new board)
"Y" cable connected to P3 via the RS232/P3 connection
USB cable from the K3 USB to a Windows 7 (32) PC USB port
The P3/Config RS232 is set to "USB"

Using Ham Radio Deluxe (HRD) Version 6.3.0.450
The PC shows "USB Audio Codec" for Transmit and Receive.

CAT control works. I can control the radio and the changes
show on HRD - from the HRD screen, I can change K3.

I see waterfall changes on HRD

PROBLEM: I hear NO AUDIO on the PC speaker.  (Except, in
the DM/780 program of HRD - if I select the Voice synthesizer,
I do hear that voice in the PC speaker.)

I understand the control and audio functions are done through
the USB port / cable.

What am I missing?

Any help?

Jim W4RKS
__
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] Upgrades best done at the factory.

[Don Wilhelm]

Gary,

I don't think the extended low frequency range coverage is done 
routinely at the factory, but it will be done if you ask for it.

Three things are necessary in a K3 to get receive down to 100 kHz.
1) the new synthesizers
2) the KBPF3 option
3) an added capacitor on the output of a voltage regulator.

If you already have the KBPF3 option, there are some changes to be made 
to that option board.
If you have a subRX with the KBPF3 option in it, the capacitor addition 
and the changes to the option board must be done too.
If you are buying a new KBPF3 option, those changes are already present 
on new boards (purchased after May 2015).


73,
Don W3FPR

On 2/8/2016 3:02 AM, Gary Smith wrote:

I've already placed the order for a K3s/10 and will be ordering the
Amp and ATU which I can migrate to the K3s. I understand they now
make a mod on one of the components to allow a transverter to listen
to the new band. Does this mod also have to be present in the sub Rx?

I would want this option completed in the in the older rig as well,
as I want to sell it with the mod but also want it in my K3s upgrade
with Sub Rx. If a mod to a legacy piece (Sub Rx) needs it done at the
factory. then I need to send my Sub unit out so they can work on it
in a timely manner.




__
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] Balun Questions

[Wes (N7WS)]

Bob,

It appears that you're of a mind that the winding (coax) is tightly wound around 
the core.  That's not how some guys are doing it.  It's just loosely looped 
through the core. See fig. 36 in Jim's paper.


Wes


On 2/7/2016 10:03 PM, Bob McGraw K4TAX wrote:
I am speaking of the radius of the coax bend.   To have a coax bend radius of 
3" the torroid would be huge...the size of a large coffee can.  A 3" OD, x 
1.5" ID   torroid would typically have a winding radius of less than ~1", even 
with 2 stacked cores.For my "ugly balun" project I use 4" ID PVC which has 
an OD of ~4.5" and which provides a bend radius of 2.25".


73
Bob, K4TAX



On 2/7/2016 10:32 PM, Chuck Catledge wrote:
It’s quite practical to use 25 to 35 mm radius bends of RG400 for large 
ferrite cores including both the one-piece and the snap-on varieties.  RG400 
has the same diameter as RG-58, i.e. 0.195”.  See K9YC’s tutorial here:


http://audiosystemsgroup.com/RFI-Ham.pdf

All of the RF common mode chokes I have made using small cable (i.e. RG400 
through RG6) use radii of 1-3 inches with the RG6 tending toward 3” and 
greater due to the foam dielectric.


---

Chuck, AE4CW

From: Mel Farrer [mailto:farrerfo...@yahoo.com]

Subject: Re: [Elecraft] Balun Questions


SORRY, but the min static bending radius for RG-303 is 25 mm and RG-400 is 35 
mm.  For torroid wrap which is better?






__
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...@triconet.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] Balun Questions

[Jim Brown]

On Mon,2/8/2016 2:52 PM, Mel Farrer via Elecraft wrote:

Let's do some basic thinking.


Mel,

You need to study my tutorial. Common mode chokes are NOT inductors, 
they are parallel resonant circuits, and it is their resistive impedance 
at resonance that makes the choke effective.


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

[Elecraft] 160 meters RX antenna for K3 advice

[Joe Moffatt]

I am needing advice from any with a K3 for 160 receive antennas.

I just don't have room for Beverages, but I do have some backyard area.  The 
average noise floor here is about S7 ok my Inverted L.

Of course there are times it is much higher, but that is the norm.

I am wondering if a small loop, EWE, flag etc is what you guys would recommend.

I am looking for anyone with a relatively small space that could give advice.

What would you do or have you done?
Trying to get my 160  DXCC, and I'm half way there on 160.

Joe
AB5OR






Sent via the Samsung Galaxy Note® 4, an AT 4G LTE smartphone
__
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] Another K3 Antarctic excursion.

[James Beitchman]

You all know about the recent VP8 DXpedition using Elecraft equipment.  Here
is another - not quite so elaborate and daring. From February 16 to March 7
C6AMD/MM will operate from the MV National Geographic Orion in Antarctic
Seas (CQ Zone 13), and under the call sign VP8DPC while moored in the
territorial waters of South Georgia Island (February 26 to March 1) and
while moored/docked in the territorial waters of The Falkland Islands (March
4 - 5). As these are not land-base operations, there is no DXCC credit. The
rig is an Elecraft K3 and 53 foot long wire with a 9:1 unun. Operation will
be CW and SSB on all HF bands, propagation willing. Hope to work many
Elecrafters. See QRZ.com. 

 

73, 

 

Buzz

W3EMD

__
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] KX3 Safety feature?

[kevino z]

It is a rigctl command to clear SPLIT mode. 

S, set_split_vfo Set split mode, 0 or 1, and transmit VFO.

S 0 VFOA turns off split mode and sets transmit VFO to VFO A

So I guess the better question is if you are in split mode, and transmitting 
(VFO B), and the KX3 gets a command to turn off split mode, and go to VFO A, 
what happens?
Does it keep transmitting but now on VFO A frequency ?

Troubleshooting issues with WSJT-X and just trying to understand what is 
happening under the hood.

-Kevin (KK4YEL) 


> On Feb 8, 2016, at 21:04, Don Wilhelm  wrote:
> 
> I do not see the "S 0 VFO" command in the K3/KX3 programmer's reference.
> Is this a command that is being issued to some logging program?
> If so, that may be a condition of the logging program (or a bug).
> 
> 73,
> Don W3FPR
> 
>> On 2/8/2016 8:43 PM, kevino z wrote:
>> I noticed if my KX3 is in split mode, and transmitting, and the commandS 
>> 0 VFOA. Is issued, the power level drops to zero. The very next time the 
>> transmission starts again, the power slowly increases from zero to whatever 
>> wattage I had set for power out. Is this some sort of safety feature?
>> 
>> -Kevin (KK4YEL)
>> 
>> No trees were killed in the sending of this message. However, a large number 
>> of electrons were terribly inconvenienced !
>> __
>> 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 w3...@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

Re: [Elecraft] KX3 Safety feature?

[Don Wilhelm]

I do not see the "S 0 VFO" command in the K3/KX3 programmer's reference.
Is this a command that is being issued to some logging program?
If so, that may be a condition of the logging program (or a bug).

73,
Don W3FPR

On 2/8/2016 8:43 PM, kevino z wrote:

I noticed if my KX3 is in split mode, and transmitting, and the commandS 0 
VFOA. Is issued, the power level drops to zero. The very next time the 
transmission starts again, the power slowly increases from zero to whatever 
wattage I had set for power out. Is this some sort of safety feature?

-Kevin (KK4YEL)

No trees were killed in the sending of this message. However, a large number of 
electrons were terribly inconvenienced !
__
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 w3...@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

Re: [Elecraft] Balun Questions

[Robert Nobis]

Hi Guy,

Thank you.  It is interesting that the ANSI test is based on physical “outer 
surface" deformity, rather than electrical (rf) performance. Although there is 
probably a degree of correlation between physical deformity and electrical (rf) 
performance. I agree the ANSI spec outlines a rather crude test. 

The data I provided came from several manufacturers of coax. I just wanted to 
point out that the manufacturer’s specifications for both RG303 and RG400 are 
the same at a 1.0 inch static bending radius. They did not indicate how they 
came up with these specifications. I believe there is plenty of margin in these 
specified values that may be required for use in military applications, since 
both cables are MIL spec rated. However, for ham radio purposes, I believe 
these specs can be safely ignored, within reason. Although, I probably would 
not try to bend either RG303 or RG400 any tighter than maybe 0.40 to 0.45 
inches. 

I have used RG303/U because that is what I had. If I had RG400/U, I would have 
used that. In my case, I have seen no measurable performance issues with the 
tightly wound chokes that I have made with RG303/U.  If care is taken in 
winding the chokes, I feel either type of coax will do the job. Maybe if I find 
some RG400/U at the next hamfest I attend, I will buy some and try it. I could 
then compare results.

It would be interesting to do some actual tests of the electrical impact of 
bending coax at radii needed for 2.4 inch OD cores, either single or stacked.  
Possibly some type of TDR test could be done to see if any deformaty would 
impact performance of the coax used in chokes, over the HF ham bands.

Again, thanks for sharing your insight and experience.

73,

Bob Nobis - N7RJN
n7...@nobis.net


> On Feb 8, 2016, at 18:01, Guy Olinger K2AV  wrote:
> 
> Robert Nobis wrote:
> > After reviewing specs from several manufacturers, the “recommended” minimum 
> > bend radius for RG303 and RG400 is essentially the same at 1.0 inches.  
> 
> Hi Robert, 
> 
> I have wrapped RG400 on a two stack of FT240 form factor toroids with never 
> an issue, without any change in electrical characteristics I could measure. 
> These were a little less than a half inch radius, something I would never try 
> with 303 or 142. 
> 
> A one inch radius or two inch diameter winding, per the listings you have 
> quoted, would hang loose on most forms. In effect this specifies the 
> 303/142/400 cables useless for winding on toroid cores of any HF suitable 
> size in use by hams, including even the monumental T500A series toroids.
> 
> ***However,***
> 
> I respectfully suggest that the minimum bending radius that you see published 
> for RG400 can be ignored for ham purposes at HF and low VHF, and common sense 
> is better suited to the problem. IMHO the ANSI standard (ANSI/SCTE 39 2007) 
> uses a crude method better suited to measuring metallic sheathed cables, and 
> ignores testing the needed characteristics directly, simply to avoid testing 
> cost and complexity.  
> 
> I also suggest that everyone carefully study the ANSI standard until it is 
> clear what they are doing mechanically and see what they are actually 
> measuring:
> 
> http://www.scte.org/documents/pdf/standards/ANSI_SCTE%2039%202007.pdf 
> 
> 
> The method of measuring is in section 4. They are looking for a limit of 1% 
> surface deformity when bending. 
> 
> In the case of RG400 with .195 inch OD, that would be 2/1000 of an inch (yes, 
> that's three zeros, two one thousandths of an inch) bending deformity at the 
> surface of the teflon jacket, or half the thickness of an average human hair. 
> 
> Anyone who works with teflon knows that the teflon jacket on the outside of 
> the bend will stretch and the teflon on the inside of the bend will bunch, 
> due to the difference in the radius, and particularly due to it being a soft 
> material with no constraint to its outside surface. And there is the problem 
> of managing to measure the thickness of something soft like teflon so as not 
> to compress the teflon 2 mils during the measurement of something with a 
> curved surface. 
> 
> The teflon dielectric between the inside of the shield and the center 
> conductor, all we care about, is confined by the double shield, which opposes 
> the teflon's tendency to deform. Further, the difference in the radius is 
> smaller inside the shield, dividing down the differential measured at the 
> surface of the jacket.
> 
> The 19 strand center conductor in RG400 will easily follow the teflon in 
> multiple bendings. The solid center conductor versions (303,142) to a degree 
> will remember their first bend and will apply that deformity in the second 
> and later bends, accumulating deformity at that point in the cable unless the 
> second bend is identical to the first. That is why you see "once" or "bend 
> once" in some of the listings for 

Re: [Elecraft] KIO3B Upgrade Kit for the K3

[James F. Boehner MD via Elecraft]

Robert,

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

’73 de JIM N2ZZ


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

I just completed the install of the KI03 update to my K3 SN 4843 and guess 
what? I forgot to update the firmware to the latest version (4.86 now). The PC 
won’t talk to the K3 through the USB! Do I need to restore the old boards and 
then update? I am watching for your HELP!
Rob, KJ6ILO
__
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 jboehne...@yahoo.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] 160 meters RX antenna for K3 advice

[Ken Widelitz]

Hi Joe,

 

The best RX antenna I have used is the SALA from Array Solutions. I've used
beverages, flags,  pennants and the DX Engineering Active RX 4 square. I
have the 20' SALA version, but I'll bet the 12' is nearly as good and takes
up less space.

 

73, Ken, K6LA / VY2TT

 

 

__
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] 160 meters RX antenna for K3 advice

[Nr4c]

Look at the K9AY receive antenna. Only needs a 30 square and 25 ft height. 

Sent from my iPhone
...nr4c. bill


> On Feb 8, 2016, at 8:32 PM, Joe Moffatt  wrote:
> 
> I am needing advice from any with a K3 for 160 receive antennas.
> 
> I just don't have room for Beverages, but I do have some backyard area.  The 
> average noise floor here is about S7 ok my Inverted L.
> 
> Of course there are times it is much higher, but that is the norm.
> 
> I am wondering if a small loop, EWE, flag etc is what you guys would 
> recommend.
> 
> I am looking for anyone with a relatively small space that could give advice.
> 
> What would you do or have you done?
> Trying to get my 160  DXCC, and I'm half way there on 160.
> 
> Joe
> AB5OR
> 
> 
> 
> 
> 
> 
> Sent via the Samsung Galaxy Note® 4, an AT 4G LTE smartphone
> __
> 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] KX3 Safety feature?

[kevino z]

I noticed if my KX3 is in split mode, and transmitting, and the commandS 0 
VFOA. Is issued, the power level drops to zero. The very next time the 
transmission starts again, the power slowly increases from zero to whatever 
wattage I had set for power out. Is this some sort of safety feature?

-Kevin (KK4YEL) 

No trees were killed in the sending of this message. However, a large number of 
electrons were terribly inconvenienced !
__
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] KIO3B Upgrade Kit for the K3

[ROBERT KIMPEL]

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

[Dave Cole]

Thanks Buzz, I will listen for them...
-- 
73's, and thanks,
Dave

For software/hardware reviews see:
http://www.nk7z.net

For MixW support see:
https://groups.yahoo.com/neo/groups/mixw/info

For SSTV help see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info



On Mon, 2016-02-08 at 20:45 -0500, James Beitchman wrote:
> You all know about the recent VP8 DXpedition using Elecraft
> equipment.  Here
> is another - not quite so elaborate and daring. From February 16 to
> March 7
> C6AMD/MM will operate from the MV National Geographic Orion in
> Antarctic
> Seas (CQ Zone 13), and under the call sign VP8DPC while moored in the
> territorial waters of South Georgia Island (February 26 to March 1)
> and
> while moored/docked in the territorial waters of The Falkland Islands
> (March
> 4 - 5). As these are not land-base operations, there is no DXCC
> credit. The
> rig is an Elecraft K3 and 53 foot long wire with a 9:1 unun.
> Operation will
> be CW and SSB on all HF bands, propagation willing. Hope to work many
> Elecrafters. See QRZ.com. 
> 
>  
> 
> 73, 
> 
>  
> 
> Buzz
> 
> W3EMD
> 
> __
> 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...@nk7z.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] APF (audio peaking filter) on the K3/K3S/KX3

[David Kuechenmeister]

Thanks for all the discussion on the APF. I've got a technique now and I think 
I can refine it into something useful.
vy 73,Dave N4KD 

On Saturday, February 6, 2016 8:02 AM, Chuck Guenther  
wrote:
 

 I've been using APF in my K3 since it was in Beta testing.  I love it!  
I've found it necessary to use both the shift and Fine tuning-- these 
are not optional for effective use of APF.  I've been using macros to 
engage and dis-engage the APF.

One reason I keep combing through the Elecraft Reflector postings is for 
gems such as Brian's suggestion below.  There is always something new to 
learn.  Thanks, Brian.
73,
Chuck  NI0C
KX1, K2-10, K3


Quote:

The technique I'm using with the APF also involves NR like so:

On an uncrowded band, set the DSP BW to 700 to 1000 Hz. If you have a roofing 
filter in that range stay within it.

Turn on NR set to mF5-3 or there about. The wide BW helps the NR work well. The 
"mix" mode lets a little unprocessed signal+noise through. This is a good weak 
signal search mode.

When you find a signal you want to copy, turn on APF and peak it in the filter. 
Fine tuning helps. There is little ringing because NR has reduced the noise 
amplitude. You can decrease the DSP BW a little but the NR is more effective 
with uncorrelated noise.

This technique has gotten me many pelts in the QRP Fox Hunts.

73,
Brian, K0DTJ


__
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...@bellsouth.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

[Elecraft] K3 problem

[n1ix]

My K3 developed a problem this weekend.
None of the front panel pushbuttons work correctly.

For example:
ATU tune   changes the  AGC value
ANT = NB2
RX  Ant = NB
PRE = ATU
SPOT = HI .Lo cut 
CWT = CMP
etc.
Other pushbutton don't work at all.
A/B REV A->B, Band, Mode

The only button that works correctly is the "Power"

I've done a "parameter reset" I had to use the spot button instead of
holding in the Shift knob.
I also tried reloading firmware,
Any other suggestions ?

Dave N1IX

__
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] K3/K3S noise blanker performance greatly enhanced (at my QTH) -- need testers

[Dave Cole]

Overall nor have I, it seems OK, but when I A/B it hear very little
difference...  

My noise is all low level of late, (on the order of S4 to S7), perhaps
it takes a stronger source...  I do have a pop that sometimes goes off,
I don't hear it with this method, however I do see it on the P3, so I
know it is there.
-- 
73's, and thanks,
Dave

For software/hardware reviews see:
http://www.nk7z.net

For MixW support see:
https://groups.yahoo.com/neo/groups/mixw/info

For SSTV help see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info



On Mon, 2016-02-08 at 21:38 +0100, Arie Kleingeld PA3A wrote:
> No luck with the NB, trying SSB with the FM-roofer.
> The NB already did a good job on the eletric fence 'ticks' using a 
> normal filter.
> As for the other noise from the neighbourhood: I have not yet been
> able 
> to produce a good result using this method.
> 
> 73,
> 
> Arie PA3A
> 
> 
> __
> 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...@nk7z.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] K3 band data lines

[Pierfrancesco Caci]

I've done an experiment. 
I got a 7805 and powered it from a separate power supply. 
The negative of the 7805 is connected to the GND of the arduino.
If I connect the 5V from the 7805 to one of the digital inputs, the
arduino powers up and executes my program, lighting up the leds as
expected. If I add the diodes as suggested by Jack, this doesn't happen
anymore. But I can't read the 5V from those lines anymore, either. 

I'm now trying to figure out how to replicate the BAND line driver
circuit that is mentioned on Cady's book on my breadboard. Not sure if I
can simulate the mosfet by just shorting that line to ground between the
2.2k and the 220 ohm resistors. In any case, in this configuration I
have to use the arduino internal pullups, and if I disconnect the
external 5V power, I still measure around 1.3 V in the place where there
would be the K3's 5V, if I have the arduino still powered up. 
Also, the logic signal of the lines seems to be reversed. 

I'm seriously thinking that the safest way for me to proceed at this
point would be an optoisolator. 

Pf


> "Bill" == Bill Frantz  writes:


Bill> The band input line pins are set up as input on the Arduino. As such,
Bill> they are high impedance, so I don't think there is any way to drive
Bill> them from the Arduino (short of changing the program/sketch). I
Bill> normally leave my switch controller powered on with the K3 powered
Bill> off, and have not experienced any problems.

Bill> If there were other things in the shack driving the lines, there might
Bill> be a over voltage issue for the Arduino, but I think there would also
Bill> be issues with the K3 driver circuitry. (One drives high, one drives
Bill> low and lots of current flows.)

Bill> 73 Bill AE6JV

Bill> On 2/7/16 at 10:52 AM, jackbrin...@me.com (Jack Brindle) wrote:

>> This can work. But it can cause problems as well. You should add
>> isolation in the form of either small diodes (cathode towards K3) or
>> small resistors (maybe 100 ohms).
>> The problem is that if the Arduino is left powered on when the K3 is
>> off, the Arduino can actually leak power into the K3 through these
>> connections and can actually power parts of the K3 (as in parts, but
>> not all, of the cpu). This false power can lead to other problems,
>> which is why we suggest the isolation diodes.
>> 
>> The second thing is to remember that 60 meters is coded as all
>> zeros. The K3 has pullup resistors on the band lines, which will
>> pull the band lines to whatever Vcc happens to be at that time. When
>> the K3 is off, Vcc is zero, which will be the value of the band
>> lines (i.e. not high-impedance). Thus when the K3 is off, you will
>> see a band selection of 60 meters. KPA500 users see this as the
>> KPA500 switches to 60 meters if it is left powered up after the K3
>> is switched off.
>> 
>> Good luck with the project!
>> 
>> - Jack, W6FB
>> 
>>> On Feb 7, 2016, at 9:47 AM, Bill Frantz  wrote:
>>> 
>>> I have built a similar switch controller. If anyone wants a copy of the 
details, please ask.
>>> 
>>> Specifically:
>>> - Just connect te band lines directly to the Arduino inputs. It works 
fine.
>>> 
>>> - Don't know about cross band split. However K 3 power off and 60M look 
the same.
>>> 
>>> - I don't bother. I don't change bands while transmitting. I'm not sure 
if the K3 even supports it.
>>> 
>>> 73 Bill AE6JV
>>> 
>>> 
>>> On 2/7/16 at 3:38 AM, p...@tippete.net (Pierfrancesco Caci) wrote:
>>> 
 Hello,
 I'm trying to make my own interface between the band data lines on the
 accessory connector of the K3 and the remote antenna switch.  I
 have a few questions that I hope you can help me with:
 - is it safe to just poll the band lines with the arduino
 digital input
 pins? I understand that my K3 is new enough to have the internal pull
 up resistor. Should I put an isolation device inbetween?   -
 does the band data as provided by the K3 always track the TX VFO?
 Should I expect some weird situation if I ever try to do cross-band
 split?   - should I bother with asserting TX Inhibit and keep it
 set for a few
 milliseconds when I detect a band switch?
>>> 
>>> ---
>>> Bill Frantz| I don't have high-speed  | Periwinkle
>>> (408)356-8506  | internet. I have DSL.| 16345 Englewood Ave
>>> www.pwpconsult.com |  | Los Gatos, CA 95032
>>> 
>>> __
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: 

Re: [Elecraft] K3 band data lines

[Jack Brindle]

The opto isn’t needed. Just a low-voltage-drop diode (1N5711 should work) with 
cathode towards the K3, pullup resistor (47K to 100K) to +5V (or whatever the 
Arduino runs on, might be 3.3V), then the Arduino input pin. This will protect 
the Arduino from being falsely powered from the K3.

This is standard design for devices that are separately powered (think hot swap 
systems) in order to keep the unpowered one from being falsely powered by the 
one that is turned on. In other words it will keep the K3 from falsely powering 
the Arduino through the IO pin. The real problem with this is that if the 
device is powered in this fashion it can actually latch up part (or all) of the 
chip, damaging it. Adding a diode and pullup resistor (or even using the 
internal pullup in the Arduino if it has one) is very cheap protection for this 
scenario.

This is something that surprises everyone the first time they see it. It is 
easily handled once you know what is going on.

The pullup resistors were added sometime after the K3 shipped in order to help 
external devices that don’t have their own pullup resistors. It is not 
surprising that they do not appear on early schematics, but they are on current 
schematics. The circuit shows a 2.2K ohm pullup to +5V followed by a 220 ohm 
series resistor. This will deliver about 2.2mA of current to the IO pin, enough 
to power some micro controllers. Thus the need for the protection circuit.

- Jack, W6FB

> On Feb 8, 2016, at 12:48 PM, Pierfrancesco Caci  wrote:
> 
> 
> I've done an experiment. 
> I got a 7805 and powered it from a separate power supply. 
> The negative of the 7805 is connected to the GND of the arduino.
> If I connect the 5V from the 7805 to one of the digital inputs, the
> arduino powers up and executes my program, lighting up the leds as
> expected. If I add the diodes as suggested by Jack, this doesn't happen
> anymore. But I can't read the 5V from those lines anymore, either. 
> 
> I'm now trying to figure out how to replicate the BAND line driver
> circuit that is mentioned on Cady's book on my breadboard. Not sure if I
> can simulate the mosfet by just shorting that line to ground between the
> 2.2k and the 220 ohm resistors. In any case, in this configuration I
> have to use the arduino internal pullups, and if I disconnect the
> external 5V power, I still measure around 1.3 V in the place where there
> would be the K3's 5V, if I have the arduino still powered up. 
> Also, the logic signal of the lines seems to be reversed. 
> 
> I'm seriously thinking that the safest way for me to proceed at this
> point would be an optoisolator. 
> 
> Pf
> 
> 
>> "Bill" == Bill Frantz  writes:
> 
> 
>Bill> The band input line pins are set up as input on the Arduino. As such,
>Bill> they are high impedance, so I don't think there is any way to drive
>Bill> them from the Arduino (short of changing the program/sketch). I
>Bill> normally leave my switch controller powered on with the K3 powered
>Bill> off, and have not experienced any problems.
> 
>Bill> If there were other things in the shack driving the lines, there 
> might
>Bill> be a over voltage issue for the Arduino, but I think there would also
>Bill> be issues with the K3 driver circuitry. (One drives high, one drives
>Bill> low and lots of current flows.)
> 
>Bill> 73 Bill AE6JV
> 
>Bill> On 2/7/16 at 10:52 AM, jackbrin...@me.com (Jack Brindle) wrote:
> 
>>> This can work. But it can cause problems as well. You should add
>>> isolation in the form of either small diodes (cathode towards K3) or
>>> small resistors (maybe 100 ohms).
>>> The problem is that if the Arduino is left powered on when the K3 is
>>> off, the Arduino can actually leak power into the K3 through these
>>> connections and can actually power parts of the K3 (as in parts, but
>>> not all, of the cpu). This false power can lead to other problems,
>>> which is why we suggest the isolation diodes.
>>> 
>>> The second thing is to remember that 60 meters is coded as all
>>> zeros. The K3 has pullup resistors on the band lines, which will
>>> pull the band lines to whatever Vcc happens to be at that time. When
>>> the K3 is off, Vcc is zero, which will be the value of the band
>>> lines (i.e. not high-impedance). Thus when the K3 is off, you will
>>> see a band selection of 60 meters. KPA500 users see this as the
>>> KPA500 switches to 60 meters if it is left powered up after the K3
>>> is switched off.
>>> 
>>> Good luck with the project!
>>> 
>>> - Jack, W6FB
>>> 
 On Feb 7, 2016, at 9:47 AM, Bill Frantz  wrote:
 
 I have built a similar switch controller. If anyone wants a copy of the 
 details, please ask.
 
 Specifically:
 - Just connect te band lines directly to the Arduino inputs. It works fine.
 
 - Don't know about cross band split. However K 3 power off and 60M look 
 the same.
 

Re: [Elecraft] K3/K3S noise blanker performance greatly enhanced (at my QTH) -- need testers

[Arie Kleingeld PA3A]

No luck with the NB, trying SSB with the FM-roofer.
The NB already did a good job on the eletric fence 'ticks' using a 
normal filter.
As for the other noise from the neighbourhood: I have not yet been able 
to produce a good result using this method.


73,

Arie PA3A


__
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] Balun Questions

[Richard Fjeld]

This doesn't answer your details, but what I did to test the one I made 
was simply to compare it to the balun in my manual roller inductor 
tuner. I used a short coax jumper between the tuner and the homebrew balun.


Dick, n0ce

On 2/6/2016 12:06 PM, Jim Allen wrote:

Ok, so this morning, I went out to the shack and whipped up a balun, from a G3TXQ 
design I found on the website of W5DXP.com.  It is coax wrapped around a ferrite 
core, with appropriate connectors in a plastic weathertight box.  I used RG8X coax, 
a 2.4" core, not sure exactly what mix, and 11 turns.

How do I test this device to get its properties, impedance at various 
frequencies, etc?




__
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] Using K3 with HRD

[Rick WA6NHC]

You can go into the driver settings for the USB audio (Mic, Listen tab) 
properties and check the "Listen to this device' which will tell you 
what is coming in via your computer speakers.


Rick nhc

On 2/8/2016 12:30 PM, James Wilson wrote:

Rich,

Yes, I can hear the audio on the K3 speaker.
I thought I should hear it also on the PC speaker
since HRD provides for remote operation of  a K3
which would necessarily include audio.

Perhaps I expected more than was warranted.

Man, thanks for your response.

Jim - W4RKS


The PC speaker is connected to the PC's >internal sound card. For data
modes you said you are using the USB codec in >the KIO3B, which is not
connected to the PC speaker. Try using a >speaker connected to the K3's
SPKR output (or the internal speaker) to >monitor the audio instead.

___

* Using a K3

*>* KIO3 B (The new board)
*>* "Y" cable connected to P3 via the RS232/P3 connection
*>* USB cable from the K3 USB to a Windows 7 (32) PC USB port
*>* The P3/Config RS232 is set to "USB"
*>
__
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 wa6...@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

[Elecraft] Using K3 with HRD

[James Wilson]

Rich,

Yes, I can hear the audio on the K3 speaker.
I thought I should hear it also on the PC speaker
since HRD provides for remote operation of  a K3
which would necessarily include audio.

Perhaps I expected more than was warranted.

Man, thanks for your response.

Jim - W4RKS

>The PC speaker is connected to the PC's >internal sound card. For data
>modes you said you are using the USB codec in >the KIO3B, which is not
>connected to the PC speaker. Try using a >speaker connected to the K3's
>SPKR output (or the internal speaker) to >monitor the audio instead.

___
>* Using a K3
*>* KIO3 B (The new board)
*>* "Y" cable connected to P3 via the RS232/P3 connection
*>* USB cable from the K3 USB to a Windows 7 (32) PC USB port
*>* The P3/Config RS232 is set to "USB"
*>
__
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] Using K3 with HRD

[James Wilson]

Thanks, Rich. I'll give that a try.

Again, many thanks.

Jim - W4RKS

---


>You can go into the driver settings for the USB audio (Mic, >Listen tab)
>properties and check the "Listen to this device' which will >tell you
>what is coming in via your computer speakers.

>Rick nhc

>On 2/8/2016 12:30 PM, James Wilson wrote:
>* Rich,
*>>* Yes, I can hear the audio on the K3 speaker.*
__
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] [KX3] DATA A Digital Modes

[David Anderson]

Joel,

A few questions for you:

Can you tell what the transmit audio sounds like by listening using monitor on 
the KX3? If you have hum or low or distorted audio or something that should 
tell you.

Have you the standard heatsink? 

If you have sufficient transmit AF going into the KX3 the power should be 
stable. Start with a low level of audio, because if it is too high it will shut 
down and this can cause confusion as you think it may be too low.

In WSJT-X you get a strange looking spectrum if you have the flatten spectra 
selected. This is because of the sharp sided filter in the KX3. Untick that 
option. I presume you have widened the filter out in the KX3 for DATA A.

What do you mean by ringing on the transmission?

Looking forward to hearing how you are doing.

Good luck.

73 from David GM4JJJ

> On 7 Feb 2016, at 23:07, Joel Black  wrote:
> 
> Need a little help here - or at least someone to tell me if this is normal 
> for the conditions or not.
> 
> I usually use my K3 connected to a Focusrite 2i2 external sound card for 
> digital modes. I use a Mac - OS X 10.11.3. It works very well and I like it 
> (the 2i2) even better than the previous USB sound card I used.
> 
> Yesterday, I got a wild hair and decided to test the KX3 with the 2i2 using 
> WSJT-X for JT65. I connected the KX3 mic to line out and the speakers to line 
> in on the 2i2. The first thing I noticed was the audio seems really low when 
> trying to listen through the sound card to receive audio. Now, this may just 
> be where I’m trying to monitor the receive audio - from the monitor jack on 
> the front. I also noticed a large spike with a dip and then another smaller 
> spike before leveling out on the waterfall display of WSJT-X. I have *no* 
> audio interface going into the sound card from the KX3 so I’m wondering if 
> this is a ground loop issue. I do not have this issue with my K3 and I have 
> no way to connect a ground to my computer other than to use a self-tapping 
> screw and drill a hole in the case which I am not going to do - forget it. 
> Unless you have an iMac, you won’t understand. I switched between LINE and 
> INSTRUMENT on the inputs of the 2i2 but didn’t get much of a change. I did 
> *not* try turning on the 48V phantom power on the inputs. From all I can 
> research and look at on the case, there is no “ground-lift” switch on the 2i2.
> 
> On the transmit side, I never could set the ALC to four bars with the fifth 
> just flickering *and* keep output at 5 W. The power would dip down to about 3 
> W and then go back up to 5W. In addition, there seemed to be a little ringing 
> when transmitting.
> 
> Now the KX3 is not my main radio, my K3 is. This is not an issue with the K3, 
> but I’d like to see this work with the KX3. I know it works because others 
> have made the KX3 work on JT65 with WSJT-X. Is there anything else I should 
> try before building an audio isolation circuit? Some setting I’m missing? 
> Something I haven’t done correctly?
> 
> Thanks for the help.
> 
> 73,
> Joel - W4JBB
> __
> 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 gm4...@yahoo.co.uk
__
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] K3 problem

[Dave Hachadorian]

Try this:
http://marc.info/?l=elecraft=144267531705514=2


Dave Hachadorian, K6LL
Yuma, AZ


-Original Message- 
From: n...@n1ix.com

Sent: Monday, February 8, 2016 10:09 AM
To: 'Elecraft'
Subject: [Elecraft] K3 problem


My K3 developed a problem this weekend.
None of the front panel pushbuttons work correctly.

For example:
ATU tune   changes the  AGC value
ANT = NB2
RX  Ant = NB
PRE = ATU
SPOT = HI .Lo cut
CWT = CMP
etc.
Other pushbutton don't work at all.
A/B REV A->B, Band, Mode

The only button that works correctly is the "Power"

I've done a "parameter reset" I had to use the spot button 
instead of

holding in the Shift knob.
I also tried reloading firmware,
Any other suggestions ?

Dave N1IX

__
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 k6ll.d...@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] Using K3 with HRD

[Richard Ferch]

The PC speaker is connected to the PC's internal sound card. For data 
modes you said you are using the USB codec in the KIO3B, which is not 
connected to the PC speaker. Try using a speaker connected to the K3's 
SPKR output (or the internal speaker) to monitor the audio instead.


You can adjust the volume of received sounds using the AF control; it 
shouldn't have any effect on the audio level in the codec (that should 
be controlled by CONFIG:LIN OUT). You can also adjust the level of 
monitored transmitted sounds using the K3's MON control, again without 
impact on the actual transmit audio level (4-5 bars on the AGC meter, 
adjusted using the LINE IN gain control).


73,
Rich VE3KI


W4RKS wrote:


Using a K3
KIO3 B (The new board)
"Y" cable connected to P3 via the RS232/P3 connection
USB cable from the K3 USB to a Windows 7 (32) PC USB port
The P3/Config RS232 is set to "USB"

Using Ham Radio Deluxe (HRD) Version 6.3.0.450
The PC shows "USB Audio Codec" for Transmit and Receive.

CAT control works. I can control the radio and the changes
show on HRD - from the HRD screen, I can change K3.

I see waterfall changes on HRD

PROBLEM: I hear NO AUDIO on the PC speaker.  (Except, in
the DM/780 program of HRD - if I select the Voice synthesizer,
I do hear that voice in the PC speaker.)

I understand the control and audio functions are done through
the USB port / cable.


__
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] K3 problem

[n1ix]

Problem is fixed thanks to Dave, K6LL and Elecraft support for the
suggestions. Thanks for the great support and a fantastic reflector!
If anyone need the fix it is at. 

http://marc.info/?l=elecraft=144267531705514=2

Dave N1IX

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
n...@n1ix.com
Sent: Monday, February 08, 2016 12:09 PM
To: 'Elecraft' 
Subject: [Elecraft] K3 problem


My K3 developed a problem this weekend.
None of the front panel pushbuttons work correctly.

For example:
ATU tune   changes the  AGC value
ANT = NB2
RX  Ant = NB
PRE = ATU
SPOT = HI .Lo cut
CWT = CMP
etc.
Other pushbutton don't work at all.
A/B REV A->B, Band, Mode

The only button that works correctly is the "Power"

I've done a "parameter reset" I had to use the spot button instead of
holding in the Shift knob.
I also tried reloading firmware,
Any other suggestions ?

Dave N1IX

__
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...@n1ix.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] K3 band data lines

[Josh Fiden]

I'm not familiar with Arduino circuit details, however... logic inputs 
typically have a clamp diode to Vcc. So, if you are applying 5V to an 
input without powering the circuit, in other words, Vcc=0, then you are 
forward biasing the protection diode. This is very likely what is 
powering the Arduino via an input port.


That's bad because the internal clamp diodes are not designed to conduct 
much current and you risk damaging the part.


Once you understand and look at the actual input circuit and driving 
output circuit, you'll know if this is something that needs to be fixed. 
For example, pushing a small current through the diodes when Arduino is 
unpowered may be fine. Or a series resistor on the input to limit the 
current.


The problem you see with your test may not be relevant since the K3 
output line can't source current like a 5V supply.


I saw Jack is suggesting a diode, with cathode toward the K3 output 
port. This is allowing the K3 to pull-down the Arduino input, but not 
pull it up. That may explain why you can't read the port with the diodes 
in place. Assuming inputs are directly connected to the Arduino's ATMega 
processor, you need to make sure the internal pull-ups are enabled in 
the processor. You can directly measure the port voltage with a DVM to 
see if they are being pulled up as needed.


Sorry for some ignorant conjecture about circuits I haven't looked at, 
hopefully it's of some use!


73,
Josh W6XU

On 2/8/2016 12:48 PM, Pierfrancesco Caci wrote:

I've done an experiment.
I got a 7805 and powered it from a separate power supply.
The negative of the 7805 is connected to the GND of the arduino.
If I connect the 5V from the 7805 to one of the digital inputs, the
arduino powers up and executes my program, lighting up the leds as
expected. If I add the diodes as suggested by Jack, this doesn't happen
anymore. But I can't read the 5V from those lines anymore, either.

I'm now trying to figure out how to replicate the BAND line driver
circuit that is mentioned on Cady's book on my breadboard. Not sure if I
can simulate the mosfet by just shorting that line to ground between the
2.2k and the 220 ohm resistors. In any case, in this configuration I
have to use the arduino internal pullups, and if I disconnect the
external 5V power, I still measure around 1.3 V in the place where there
would be the K3's 5V, if I have the arduino still powered up.
Also, the logic signal of the lines seems to be reversed.

I'm seriously thinking that the safest way for me to proceed at this
point would be an optoisolator.

Pf



"Bill" == Bill Frantz  writes:


 Bill> The band input line pins are set up as input on the Arduino. As such,
 Bill> they are high impedance, so I don't think there is any way to drive
 Bill> them from the Arduino (short of changing the program/sketch). I
 Bill> normally leave my switch controller powered on with the K3 powered
 Bill> off, and have not experienced any problems.

 Bill> If there were other things in the shack driving the lines, there 
might
 Bill> be a over voltage issue for the Arduino, but I think there would also
 Bill> be issues with the K3 driver circuitry. (One drives high, one drives
 Bill> low and lots of current flows.)

 Bill> 73 Bill AE6JV

 Bill> On 2/7/16 at 10:52 AM, jackbrin...@me.com (Jack Brindle) wrote:

 >> This can work. But it can cause problems as well. You should add
 >> isolation in the form of either small diodes (cathode towards K3) or
 >> small resistors (maybe 100 ohms).
 >> The problem is that if the Arduino is left powered on when the K3 is
 >> off, the Arduino can actually leak power into the K3 through these
 >> connections and can actually power parts of the K3 (as in parts, but
 >> not all, of the cpu). This false power can lead to other problems,
 >> which is why we suggest the isolation diodes.
 >>
 >> The second thing is to remember that 60 meters is coded as all
 >> zeros. The K3 has pullup resistors on the band lines, which will
 >> pull the band lines to whatever Vcc happens to be at that time. When
 >> the K3 is off, Vcc is zero, which will be the value of the band
 >> lines (i.e. not high-impedance). Thus when the K3 is off, you will
 >> see a band selection of 60 meters. KPA500 users see this as the
 >> KPA500 switches to 60 meters if it is left powered up after the K3
 >> is switched off.
 >>
 >> Good luck with the project!
 >>
 >> - Jack, W6FB
 >>
 >>> On Feb 7, 2016, at 9:47 AM, Bill Frantz  wrote:
 >>>
 >>> I have built a similar switch controller. If anyone wants a copy of 
the details, please ask.
 >>>
 >>> Specifically:
 >>> - Just connect te band lines directly to the Arduino inputs. It works 
fine.
 >>>
 >>> - Don't know about cross band split. However K 3 power off and 60M 
look the same.
 >>>
   

Re: [Elecraft] Balun Questions

[Mel Farrer via Elecraft]

Let's do some basic thinking. The balun you made with a ferrite torroid and a 
length of coax is a straight piece of coax with the two ends supposedly 
isolated for CMC common mode current., right?  How do you make a simple 
measurement on the lowest frequency?  Expensive equipment, right?  Well, what 
is the next best way to determine the isolation at RF, Hummm.  If I measure the 
inductance across the two ends of the balun that is shield to shied to make it 
easy,  the ferrite increases the inductance of the many turns through the core, 
right?   If you take the number in uH and put it into the: ( Xl= 
6.28*F(HZ)*inductance(H)), formula you get an equivalent reactance in ohms at 
the frequency of interest.  Yes, I know there are other factors, but it gives 
you a figure of merit against any other current choke baluns, or other designs 
you would like to try. Remember More is better.    Funn.
Mel, K6KBE


  From: Richard Fjeld 
 To: elecraft@mailman.qth.net 
 Sent: Monday, February 8, 2016 12:57 PM
 Subject: Re: [Elecraft] Balun Questions
   
This doesn't answer your details, but what I did to test the one I made 
was simply to compare it to the balun in my manual roller inductor 
tuner. I used a short coax jumper between the tuner and the homebrew balun.

Dick, n0ce

On 2/6/2016 12:06 PM, Jim Allen wrote:
> Ok, so this morning, I went out to the shack and whipped up a balun, from a 
> G3TXQ design I found on the website of W5DXP.com.  It is coax wrapped around 
> a ferrite core, with appropriate connectors in a plastic weathertight box.  I 
> used RG8X coax, a 2.4" core, not sure exactly what mix, and 11 turns.
>
> How do I test this device to get its properties, impedance at various 
> frequencies, etc?
>
>

__
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 farrerfo...@yahoo.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] FS: Elecraft KXPA100/KXAT100

[Jim Stahl via Elecraft]

I'm selling my KXPA100, SN# 0919, with KXAT100 tuner, KXPACBL cable set, KXUSB 
USB Cable, and manuals. All is fine, but having acquired a K3 since I got the 
KX3/KXPA100, I no longer need this amp for my full power operating.

$900 including shipping in USA. I can also deliver at Orlando, and reduce the 
price by the shipping amount.


73  -  Jim  K8MR
__
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] NAQCC February Sprint this Tuesday Evening

[Larry W2LJ]

The February sprint is this coming Tuesday evening local time (February 9th,
EST - 8:30-10:30PM, CST - 7:30-9:30PM, MST - 6:30-8:30PM, PST - 5:30-7:30PM),
which translates as Wednesday, February 10th, 0130 to 0330Z in all cases.

For all the "official" information, please go to:

http://www.naqcc.info/sprint201602.html

There you will find all the details as to time, frequencies and other important
information.

Certificates: SWA (simple wire antennas) certificates by call area, VE and DX
for 1st, 2nd and 3rd place finishers (New!). A Certificate for top score in the
GAIN antenna category.

Prizes: Too many to list!! - check out the prizes page on our website.

This is a monthly event that caters to the CW veteran, the CW newcomer, straight
key and bug fans. All are welcome to participate (this includes QRO); but you
must use QRP power levels to compete for awards.

If you've been hesitant to join in our sprints because you hear other sprints
running at breakneck speeds, have no fear. Our sprints are geared to the
newcomer to CW and/or contesting. Virtually everyone including the many veteran
contesters who regularly enter our sprints will slow down to YOUR speed to help
you make your contacts.

If you are not already a member of NAQCC... membership is FREE! Now is your
chance to join the largest QRP CW Club in the world!! We currently have 7100+
members in: All 50 States - 9 VE Provinces - 100 Countries. Sign up on the
NAQCC website today (http://naqcc.info/) and receive a handsome certificate,
with your membership number on it, which is good for life.

Come join us and have a real good time!


72/73 de Larry W2LJ
NAQCC #35

for NAQCC
http://naqcc.info/
__
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] KX3 beta firmware rev. 2.38: 15 Watts max output on 80-20 m, and PSK63 mode

[Don Lewis (KI4D)]

Howard - I am getting 14.4VDC from the supply on receive.  I have not tried
transmit.  I am just concerned why the updated firmware won't allow display
of 15 watts.  Thanks for your response to my question.  Perhaps I need to
upload the beta firmware again although the utility says I have the current
version.

Don, KI4D  

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Howard
Hoyt
Sent: Monday, February 8, 2016 11:38 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KX3 beta firmware rev. 2.38: 15 Watts max output on
80-20 m, and PSK63 mode

Hi Don,

Running the new software revision on our development units here (s/n
1403 & 7420), we see 15W output on 80-20M, with the KX3 pulling 2.2-2.5A
depending on SWR.  The voltage readings below are the average observed on
two different KX3s on 40M powered by a Pro Audio Engineering Kx33:

Voltage at the DC jack measured on an HP34401A:
Rcv: 14.45 VDC
Xmit: 14.15 VDC

Voltage from the KX3 display PS value:
Rcv: 14.1 VDC
Xmit: 13.5 VDC

The lower readings on the KX3's display are due to the polarity protection
diode and other I*R voltage drops /internal/ to the KX3.  
Elecraft's spec for the 15W power level specifies a supply which can deliver
/at the DC power jack/ at least 13.8V at the 2.3-2.5A level needed for 15W
output.  The PAE-Kx33 design will deliver at the DC power plug 3A at >14.0V,
and 4A at >13.9V.

If your Kx33 supply  is not delivering better than 13.8V at the plug running
15W then please contact us!

Cheers & 73,

Howie - WA4PSC
www.proaudioeng.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 k...@arrl.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] Balun Questions

[Guy Olinger K2AV]

Robert Nobis wrote:
> After reviewing specs from several manufacturers, the “recommended”
minimum bend radius for RG303 and RG400 is essentially the same at 1.0
inches.

Hi Robert,

I have wrapped RG400 on a two stack of FT240 form factor toroids with never
an issue, without any change in electrical characteristics I could measure.
These were a little less than a half inch radius, something I would never
try with 303 or 142.

A one inch radius or two inch diameter winding, per the listings you have
quoted, would hang loose on most forms. In effect this specifies the
303/142/400 cables useless for winding on toroid cores of any HF suitable
size in use by hams, including even the monumental T500A series toroids.

***However,***

I respectfully suggest that the minimum bending radius that you see
published for RG400 can be ignored for ham purposes at HF and low VHF, and
common sense is better suited to the problem. IMHO the ANSI standard
(ANSI/SCTE 39 2007) uses a crude method better suited to measuring metallic
sheathed cables, and ignores testing the needed characteristics directly,
simply to avoid testing cost and complexity.

I also suggest that everyone carefully study the ANSI standard until it is
clear what they are doing mechanically and see what they are actually
measuring:

http://www.scte.org/documents/pdf/standards/ANSI_SCTE%2039%202007.pdf

The method of measuring is in section 4. They are looking for a limit of 1%
surface deformity when bending.

In the case of RG400 with .195 inch OD, that would be 2/1000 of an inch
(yes, that's three zeros, two one thousandths of an inch) bending deformity
at the surface of the teflon jacket, or half the thickness of an average
human hair.

Anyone who works with teflon knows that the teflon jacket on the outside of
the bend will stretch and the teflon on the inside of the bend will bunch,
due to the difference in the radius, and particularly due to it being a
soft material with no constraint to its outside surface. And there is the
problem of managing to measure the thickness of something soft like teflon
so as not to compress the teflon 2 mils during the measurement of something
with a curved surface.

The teflon dielectric between the inside of the shield and the center
conductor, all we care about, is confined by the double shield, which
opposes the teflon's tendency to deform. Further, the difference in the
radius is smaller inside the shield, dividing down the differential
measured at the surface of the jacket.

The 19 strand center conductor in RG400 will easily follow the teflon in
multiple bendings. The solid center conductor versions (303,142) to a
degree will remember their first bend and will apply that deformity in the
second and later bends, accumulating deformity at that point in the cable
unless the second bend is identical to the first. That is why you see
"once" or "bend once" in some of the listings for RG303 and RG142. I have
no argument with the "bend once" specification in the 303 and 142 listings.
It's relates to the reason I use RG400.

RG400 is the only coax listed for certified aircraft installations in a lot
of aircraft service vendor's web pages. I find 142 mentioned a few times as
being easier to fit with connectors. I have not seen 303 mentioned on an
aircraft service vendor web page.

73, Guy K2AV
__
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