Re: [Elecraft] Microham Microkeyer II, RFI in mike with my K3

[Jim Brown]

Bernhard,

It's NOT common mode, it's the simple fact that the audio interface is a 
mess. The antenna on the roof transmitting high power is doing its job, 
putting a lot of RF in the shack. If it didn't (based on proxmiity), it 
would be a lousy antenna. The problem is that the interface (wiring plus 
electronics plus termination) does not reject RF because it fails to 
conform to fundamental principles that reject RF. That is, every cable 
must be a transmission line, every shield must be terminated at the 
shielding enclosure of the equipment at both ends, and every equipment 
chassis must have a short, fat, bond to every other equipment chassis. 
Yes, the signal is audio, but the interference is RF, and it takes 
proper transmission line techniques to reject that RF.


I have VERY limited experience with MicroHam, but the jumble of wires 
that I encountered with the MicroHam unit at W6OAT violated all 
principles of good engineering practice for operation in a high RF 
environment. It was nothing more than a multipin connector with a lot of 
wires soldered to that connector.  Indeed, it would darn near impossible 
to do it right without starting from scratch withunit a properly made 
cable from the MicroHam unit to the radio, with each signal path having 
its own coaxial cable.


I have no idea if that describes ALL MicroHam units, but it does 
describe Rusty's. And don't ask the model number -- I was so disgusted 
by what I saw that I just rolled my eyes.


73, Jim K9YC

On Mon,2/15/2016 10:43 PM, bernhard.ho...@bmw.de wrote:

Hi Guy,

Fully agree with your statement, but as stated I have chokes in all Coax, rotor 
and control cables.
I am using double shielded USB cables, extra grounding for each device…no idea 
what else could be don.
Regarding the 2 Ohm, there is a recommendation by Microham to check that the 
USB / Molex connector resistance should not exceed 5 Ohm otherwise your PC has 
a USB/Chassis grounding problem.

I had RFI in the Microham already with 300Wtts…now I can run 1200Watts without 
any problems with is over the legal limit over here anyway!

Several HAMs observed problems with the Microham and in combination with 
K3/other rigs.
The cheap homebrew USB/Soundcard interface works now, that’s all what counts.

73
Bernie
DL5RDP

Von: guyk...@gmail.com [mailto:guyk...@gmail.com] Im Auftrag von Guy Olinger 
K2AV
Gesendet: Montag, 15. Februar 2016 18:15
An: Horst Bernhard, MZ-LR; Elecraft Reflector
Betreff: [Elecraft] Microham Microkeyer II, RFI in mike with my K3

Hi Bernie,

If you are running QRO over your roof, your RFI proofing needs to be perfect. 
Your situation is only exceeded in nastiness by being next door to a 50 kW AM 
station and maybe not then. Your induced common mode RF voltages on conductors 
can be double and triple the desired signal voltages on the cables and 
ridiculously more than microphone voltages.

One CAN get lucky and get by, but if one does it's only by dumb blind luck and 
any change to cable routing or position and count of station equipment can 
disable or polute electronic functions.

If you succumb to the temptation to attribute the changes to the last thing 
changed or moved, you will be sent down the rabbit hole to join company with 
Alice and the Mad Hatter where nothing makes sense any more. This can include 
complaints to manufacturers straight from Wonderland requiring apologies 
afterward. Been there, done that. Know whereof I speak.

It is quite probable that replacing the box changed cable specifics. Any 
connection that is not a tenth of an ohm or less needs to be replaced or 
repaired. I have no idea where you got 2 ohms as a satisfactory connection 
resistance. Maybe the USB signal itself will tolerate that under otherwise 
non-stressed circumstances but it's far away out of bounds for RFI proofing.

In your case, QRO on the roof, you need to take maximum anti-RF measures on 
**ALL** conductors in the shack. Otherwise just changing orientation of cables 
may remove or incite RFI, or worse makes RFI intermittent leading to suspicions 
of poltergeist.

I have finally gotten to the point where all retail audio cables need to be 
replaced with soldered coax or shielded pairs with WOVEN shields. ESPECIALLY 
audio cables terminated in RCA plugs which typically have the cheapest shields 
known to man. No retail manufacturer is testing them for RFI susceptibility in 
rooftop QRO conditions.

There is a good selection of shielded pair and coax cable with Teflon 
dielectric/insulation and woven shields easily soldered to *quality* RCA plugs 
or other connectors without melting the wire.

I know that QRO on the roof is all that's available for many folks. Just 
understand that's the very stiffest possible demand on all RFI proofing issues. 
No cheapies, no short cuts, no omissions allowed in the protocol.

73, Guy K2AV

On Monday, February 15, 2016, 
> 
wrote:
Dear all,

just an update..the Microham Microkeyer II has definitely a problem with RF!
I r

Re: [Elecraft] Microham Microkeyer II, RFI in mike with my K3

[Bernhard.Horst]

Hi Guy,

Fully agree with your statement, but as stated I have chokes in all Coax, rotor 
and control cables.
I am using double shielded USB cables, extra grounding for each device…no idea 
what else could be don.
Regarding the 2 Ohm, there is a recommendation by Microham to check that the 
USB / Molex connector resistance should not exceed 5 Ohm otherwise your PC has 
a USB/Chassis grounding problem.

I had RFI in the Microham already with 300Wtts…now I can run 1200Watts without 
any problems with is over the legal limit over here anyway!

Several HAMs observed problems with the Microham and in combination with 
K3/other rigs.
The cheap homebrew USB/Soundcard interface works now, that’s all what counts.

73
Bernie
DL5RDP

Von: guyk...@gmail.com [mailto:guyk...@gmail.com] Im Auftrag von Guy Olinger 
K2AV
Gesendet: Montag, 15. Februar 2016 18:15
An: Horst Bernhard, MZ-LR; Elecraft Reflector
Betreff: [Elecraft] Microham Microkeyer II, RFI in mike with my K3

Hi Bernie,

If you are running QRO over your roof, your RFI proofing needs to be perfect. 
Your situation is only exceeded in nastiness by being next door to a 50 kW AM 
station and maybe not then. Your induced common mode RF voltages on conductors 
can be double and triple the desired signal voltages on the cables and 
ridiculously more than microphone voltages.

One CAN get lucky and get by, but if one does it's only by dumb blind luck and 
any change to cable routing or position and count of station equipment can 
disable or polute electronic functions.

If you succumb to the temptation to attribute the changes to the last thing 
changed or moved, you will be sent down the rabbit hole to join company with 
Alice and the Mad Hatter where nothing makes sense any more. This can include 
complaints to manufacturers straight from Wonderland requiring apologies 
afterward. Been there, done that. Know whereof I speak.

It is quite probable that replacing the box changed cable specifics. Any 
connection that is not a tenth of an ohm or less needs to be replaced or 
repaired. I have no idea where you got 2 ohms as a satisfactory connection 
resistance. Maybe the USB signal itself will tolerate that under otherwise 
non-stressed circumstances but it's far away out of bounds for RFI proofing.

In your case, QRO on the roof, you need to take maximum anti-RF measures on 
**ALL** conductors in the shack. Otherwise just changing orientation of cables 
may remove or incite RFI, or worse makes RFI intermittent leading to suspicions 
of poltergeist.

I have finally gotten to the point where all retail audio cables need to be 
replaced with soldered coax or shielded pairs with WOVEN shields. ESPECIALLY 
audio cables terminated in RCA plugs which typically have the cheapest shields 
known to man. No retail manufacturer is testing them for RFI susceptibility in 
rooftop QRO conditions.

There is a good selection of shielded pair and coax cable with Teflon 
dielectric/insulation and woven shields easily soldered to *quality* RCA plugs 
or other connectors without melting the wire.

I know that QRO on the roof is all that's available for many folks. Just 
understand that's the very stiffest possible demand on all RFI proofing issues. 
No cheapies, no short cuts, no omissions allowed in the protocol.

73, Guy K2AV

On Monday, February 15, 2016, 
> 
wrote:
Dear all,

just an update..the Microham Microkeyer II has definitely a problem with RF!
I replaced the Microkeyer with a homebrew USB and soundcard interface (Built in 
2008) and made new cable distribution box..And the problems are gone.

I have S-NO 280 on the microkeyer..hope the newer ones are better. But 
definitely not my kind of solution for that cost!

73s
Bernie
DL5RDP

-Ursprüngliche Nachricht-
Von: Joe Subich, W4TV [mailto:li...@subich.com]
Gesendet: Freitag, 12. Februar 2016 14:15
An: elecraft@mailman.qth.net
Betreff: Re: [Elecraft] Microham Microkeyer II, RFI in mike with my K3


> As I recall, I used pin 7 for the mic ground and pin 8 for the PTT
> ground. In a brief test it worked ok into a dummy load. Is this not
> correct?

That is correct although with the K3/K3S since the Elecraft mic RFI
change it should not matter (both pin 7 and pin 8 are connected to
the "ground" foil on the front panel circuit board).

Early K3 front panels included an RF choke in the mic *and* PTT returns
which made the "pin 1 problem" much worse.  With the RF choke removed
(bypassed) the issue is significantly reduced but there may still be a
problem if the overall station installation has any "RF on the coax."

73,

   ... Joe, W4TV


On 2/12/2016 7:59 AM, j...@kk9a.com wrote:
> This week I wired rewired my MicroHAM Micro2R cables for K3S's.  As I
> recall, I used pin 7 for the mic ground and pin 8 for the PTT ground. In a
> brief test it worked ok into a dummy load. Is this not correct?
>
> John KK9A
>

__
El

Re: [Elecraft] Lots of RTTY activity right now -- great time to try FSK-D mode on your K3/K3S/KX3

[David Blake via Elecraft]

I tried it and it worked FB, only thing for an old CW op it was difficult 
gettingused to sending a new CW character  dit dit dah dah with terminates 
theRTTY diddle immediately rather than to have it continue 5 seconds afterthe 
last character completes.
73Dave -N4DB-  K3s #10223
 

On Friday, February 12, 2016 9:05 PM, Wayne Burdick  
wrote:
 

 FSK-D mode is perfect for casually dropping in on RTTY contests. 

To receive RTTY directly on the VFO B display:

  1. Tap DATA
  2. Rotate VFO B to select FSK-D
  3. Tap any switch to exit DATA setup
  4. Hold TEXT DEC to turn on text decode
  5. If you were using DISP to look at supply voltage, etc.,
      that will override text decode, so tap DISP to exit

Then just tune in RTTY signals and watch the decoded text scroll by.

To transmit, you can use either a keyer paddle attached directly to the radio, 
or a keyboard attached to a PX3 or P3, or use your PC keyboard from within K3 
Utility or KX3 Utility.

Happy hunting!

Wayne
N6KR

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Re: [Elecraft] KX3 pedestrian mobile?

[Walter Underwood]

I’ve thought this “Dozer Chest Harness” might work for the KX3, depending on 
where the straps are.

http://www.truenorthgear.com/catalog/products/accessories/dozer-chest-harness 


The 2m module in the KX3 is probably best for SSB, CW or other non-FM modes. It 
is hard to beat a modern 2m HT for 2m FM, either on price or performance. A 
Yaesu FT-60R costs less and puts out about double the power.

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

> On Feb 15, 2016, at 6:50 PM, Larry D. Warner  wrote:
> 
> If you want pedestrian mobile, look online at 'phone and radio chest pack'.
> Just do a web search.  There are many out there to use.  I volunteer with
> Search and Rescue and there are as many examples of chest packs as there are
> volunteers.  All sizes and shapes.
> 
> 
> 
> I'm a new HAM and a new KX3 owner, but, my experience with the KS3 portable
> using the small 2M antenna Elecraft sells is not very good.  The RF pickup
> in the mike cord over rides the audio and it is unintelligible.  Me and
> Elmer tried some ferrite cores around the mike cord but it didn't improve it
> enough to really be noticeable.  I would like to use the KX3 this way in my
> search and rescue but it isn't working out that way.  If you find a way to
> do it, let me know what that is.
> 
> 
> 
> 73
> 
> 
> 
> Larry
> 
> KG7ZSB
> 
> 
> 
> "I'll see you on the radio."
> 
>Charles Kuralt
> 
> 
> 
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> Message delivered to wun...@wunderwood.org

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[Elecraft] KPA500 problem

[Mike Crownover]

I just bought a lightly used KPA500. It arrived from the seller, well packed
and complete with cables, manuals, etc. I turned the amp on, interfaced it
with my K3, keyed the radio and the KPA500 immediately shut-off. No fault
light or error code, nothing. It shuts down just as if I had pressed the
power button, the fan runs, etc... The antenna is resonant 1:1, I've lowered
input power to 10 watts, swapped coax, hooked it up to another K3, used RCA
to RCA cable, the Elecraft cable, etc.. When down to 10 watts input, I can
tap the paddle like a straight key lightly and the amp works, but put two
dits together and it shuts down.

 

Has anyone had an experienced anything like this. I keep thinking this has
to be something simple.

 

Mike AD5A

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Re: [Elecraft] KX3 pedestrian mobile?

[Larry D. Warner]

If you want pedestrian mobile, look online at 'phone and radio chest pack'.
Just do a web search.  There are many out there to use.  I volunteer with
Search and Rescue and there are as many examples of chest packs as there are
volunteers.  All sizes and shapes.

 

I'm a new HAM and a new KX3 owner, but, my experience with the KS3 portable
using the small 2M antenna Elecraft sells is not very good.  The RF pickup
in the mike cord over rides the audio and it is unintelligible.  Me and
Elmer tried some ferrite cores around the mike cord but it didn't improve it
enough to really be noticeable.  I would like to use the KX3 this way in my
search and rescue but it isn't working out that way.  If you find a way to
do it, let me know what that is.

 

73

 

Larry

KG7ZSB

 

"I'll see you on the radio."

Charles Kuralt

 

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[Elecraft] K3 with Amertiron amp

[Jan Ditzian]

Gerry,

I use a K3 with an AL82.  I suspect that the K3s is like the K3.

The setting for semi-break-in is to put the K3 into CW mode and then repeatedly 
press & hold the QSK switch until you see the word SEMI in the display.

The connector for key out to operate the linear is an RCA female labeled key 
out, so the standard RCA male-to-male cable works fine between the rig and the 
amp.  The paddle and key each require a standard, old-fashioned, large, phone 
plug.

If you put the rig into semi-break-in mode on a given band, then go to SSB, you can turn 
up the CW speed and use the keyer to generate dots while the K3 is in SSB mode, as you 
use your output meter to tune up into your dummy load without having to operate with a 
steady carrier.  This is the cheap ham's "pecker."

I have been quite pleased with the operation of the AL-82 and the K3.

73,

Jan, KX2A



I am getting my K3S soon. Have been using Yaesu 1000MP and Ameritron AL82 with 
1000MP set to semi QSK and it is OK.
To tun a K3 into an ANertiron or any non Elecraft amp semi qsk, are there any 
setting I have to make and where would I find them?
Also, is the connector input for key out RCA connector and is the jack for the 
paddle an RCA. Or?

Tks much,
Gerry


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Re: [Elecraft] CQ WPX RTTY Contest

[Bill Frantz]

More information: RUMlogNG seems to be part of the problem. 
Today I was able to relax and watch decode of a RTTY (KL7RST 
running contacts). I noticed that the K3 was doing a good job of 
decoding the RTTY at all times (but wow, the screen is small). 
The P3/SVGA was losing characters making the decode unreadable, 
as was RUMlogNG. If I quit RUMlogNG, the P3/SVGA stopped 
dropping characters and seemed to be showing the same decode as 
the K3.


Perhaps someone who know how the characters get from the K3 to 
the P3 can shed some light on what might be going on.


I'll ask Tom, DL2RUM in his support forum.

73 Bill AE6JV

On 2/14/16 at 4:51 PM, fra...@pwpconsult.com (Bill Frantz) wrote:

I just finished casual operation in the contest. I spent 
considerable time trying to find the best way to do RTTY with RUMlogNG.


RUMlogNG can use the RTTY support built in to the K3 via the 
RS-232 link. It works well for transmit, although given the 
number of times I had to repeat my call, I wonder if there was 
a slight frequency difference between the audio coming in to 
the computer thru the sound card from the radio and the 
transmit frequency. It seemed like there was enough of a 
difference that the running OP had to fine tune my signal to 
decode it.


I did center the CWT tuning indicator on the K3, and when I 
turned on Dual PB, the computer was getting the signal on the 
right frequency.


My big problem was on receive. I never got the radio to cleanly 
decode. It missed almost all the call signs, regardless of 
strength of the signal. I tried using fldigi, which did work, 
and cocoaModem which seemed to decode better than fldigi. I 
ended up using cocoaModem and logging manually. (Next time I'll 
probably steal the VGA screen from the P3 and use it as a 
second screen on the computer so I can see all of both programs windows.)


The question is, what am I doing wrong with getting decoding to work on the K3?


--
Bill Frantz| There are now so many exceptions to the
408-356-8506   | Fourth Amendment that it operates only by
www.pwpconsult.com | accident.  -  William Hugh Murray

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Re: [Elecraft] CQ WPX RTTY Contest

[Bill Frantz]

Good idea. I wish I had heard about on Friday HIHI. (cocoaModem 
will also separately decode the left and right channels.)


73 Bill AE6JV

On 2/15/16 at 8:40 AM, rprat...@mac.com (Rick Prather) wrote:


BTW, CCM also has the benefit of being able to use both VFO's and tuning
for the next call while I wait for the "NR?'s and AGN?'s"  to be finished
on the main receiver.  That way is I have a secondary station tuned in on
the SUB I can do a quick A/B switch to work the next one.



Bill Frantz|"Insofar as the propositions of mathematics 
refer to
408-356-8506   | reality, they are not certain; and insofar 
they are
www.pwpconsult.com | certain, they do not refer to reality.” 
-- Einstein


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Re: [Elecraft] KX3 Macro Commands; Selecting PSK31 or PSK63

[tomb18]

It would be great but not yet selectable in firmware. Hopefully 
soon.Tomva2fsq.com 


Sent from my Samsung Galaxy smartphone. Original message From: 
jkiracof...@charter.net Date: 2016-02-15  7:13 PM  (GMT-05:00) To: 
"'elecraft@mailman.qth.net'"  Subject: [Elecraft] KX3 
Macro Commands; Selecting PSK31 or PSK63 
 

As you may be aware, a new Firmware Revision is available for the
KX3; MCU 2.38 / DSP  1.37,  1-3-2016. 

PSK63 is now available but I need to know how one would select either
PSK31 or PSK63 from a macro. 

As the K3 / K3S already has PSK31 and PSK63, a quick perusal of the
Programmers Instructions  yielded no dedicated / direct instruction to
accomplish this in a Macro. 

I would think this issue has already been addressed. 

Tnx for your assistance. John KN4XX
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Re: [Elecraft] Wanted: K2 Nifty Guide

[EricJ]

Thanks, Don. This might be all I need. I wanted something to leave in 
the travel trailer. I'm going to laminate the WF4I one on your site and 
mount it permanently.


There are a couple of omissions and they happen to be the ones that 
drive me nuts in camp. That's when I usually end up bumping something, 
not knowing what I did. Usually, it is a flashing annunciator. He 
mentions using VOX to enter Test mode in CW, but doesn't mention that 
the C flashes in Test. Also the A and B annunciators flash when in 
Split. He does mention the flashing RIT and XIT annunciators.


It might just be the way I use a quick reference. Usually, I know the 
menu items I use for CW so I rarely have to look something up that I 
want to do. Instead, I use a QR when I've done something inadvertently 
and get unknown annunciators or error code. So if I see the C flashing, 
I have no idea what it could be. I was looking for something that would 
tell me it means I'm in Test mode, not something that tells me how to 
select Test mode. hi.


Anyway, thanks for the link. Your site is a treasure for us K2 holdouts.

Eric
KE6US



On 2/15/2016 12:49 PM, Don Wilhelm wrote:

Eric and anyone else interested,

I don't have a Nifty Guide, but as an alternative, you may want to 
download the K2 Quick Reference from my website www.w3fpr.com.

Look near the bottom of the opening page.

73,
Don W3FPR

On 2/15/2016 1:52 PM, EricJ wrote:

The K2 Nifty Guide is out of print.

Anyone have one left over from upgrading to K3?







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[Elecraft] KX3 Macro Commands; Selecting PSK31 or PSK63

[jkiracofe51]

 

As you may be aware, a new Firmware Revision is available for the
KX3; MCU 2.38 / DSP  1.37,  1-3-2016. 

PSK63 is now available but I need to know how one would select either
PSK31 or PSK63 from a macro. 

As the K3 / K3S already has PSK31 and PSK63, a quick perusal of the
Programmers Instructions  yielded no dedicated / direct instruction to
accomplish this in a Macro. 

I would think this issue has already been addressed. 

Tnx for your assistance. John KN4XX
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[Elecraft] K3 with Amertiron amp

[Scott James via Elecraft]

I am getting my K3S soon. Have been using Yaesu 1000MP and Ameritron AL82 with 
1000MP set to semi QSK and it is OK.
To tun a K3 into an ANertiron or any non Elecraft amp semi qsk, are there any 
setting I have to make and where would I find them?
Also, is the connector input for key out RCA connector and is the jack for the 
paddle an RCA. Or?

Tks much,
Gerry
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Re: [Elecraft] New Purchase Sanity Check

[Don Wilhelm]

Ed,

I did not state 10-12w.
I think your KX3 and KXPA100 is working OK.
The KXPA100 was designed to be driven to full output with up to 5 watts 
of drive (it works with the Yaesu FT-817).
The drive power specified is 3.5 to 7 watts, and you fall right in that 
range except for 6 meters.


73,
Don W3FPR

On 2/15/2016 5:28 PM, Edward R Cole wrote:

Don,

OK.  Makes me curious what is happening with my KX3+KXPA-100 (without 
KAT100).


My KXPA-100 reaches 100w with 3.9w*drive from the KX3.  If, when you 
state 10-12w, you mean output of the KXPA-100, I'm not sure I can get 
it down that low.  The KXPA-100 LED PWR meter reads 25w with only 0.1w 
drive from the KX3.


I do have the KX3 ATU which is normally run when operating.  Input SWR 
looks like 1.1 into the KXPA-100 (haven't bypassed the ATU to see if 
this is normal SWR).


*Note requires 8w drive on 6m for 80w output.  Exceeding 8w will 
activate auto-attenuator in the KXPA-100.


73, Ed - KL7UW

---
From: Don Wilhelm 
To: Michael Greb , elecraft

Subject: Re: [Elecraft] New Purchase Sanity Check
Message-ID: <56c238c3.10...@embarqmail.com>
Content-Type: text/plain; charset=windows-1252; format=flowed

Mike,

Yes, that is the way it works - and it is automatic.

73,
Don W3FPR



73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
dubus...@gmail.com

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[Elecraft] Elecraft 200W Directional Coupler For Sale

[Michael Raskin]

For Sale: Elecraft 200W Directional Coupler for P3.  Brand new in the box.  
DCHF-200  1.8-54 MHz, 0.1- 200W  Comes with sensor cable.  $55, which includes 
free shipping CONUS.  Mike, W4UM
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Re: [Elecraft] New Purchase Sanity Check

[Edward R Cole]

Don,

OK.  Makes me curious what is happening with my KX3+KXPA-100 (without KAT100).

My KXPA-100 reaches 100w with 3.9w*drive from the KX3.  If, when you 
state 10-12w, you mean output of the KXPA-100, I'm not sure I can get 
it down that low.  The KXPA-100 LED PWR meter reads 25w with only 
0.1w drive from the KX3.


I do have the KX3 ATU which is normally run when operating.  Input 
SWR looks like 1.1 into the KXPA-100 (haven't bypassed the ATU to see 
if this is normal SWR).


*Note requires 8w drive on 6m for 80w output.  Exceeding 8w will 
activate auto-attenuator in the KXPA-100.


73, Ed - KL7UW

---
From: Don Wilhelm 
To: Michael Greb , elecraft

Subject: Re: [Elecraft] New Purchase Sanity Check
Message-ID: <56c238c3.10...@embarqmail.com>
Content-Type: text/plain; charset=windows-1252; format=flowed

Mike,

Yes, that is the way it works - and it is automatic.

73,
Don W3FPR



73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
dubus...@gmail.com

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Re: [Elecraft] Wanted: K2 Nifty Guide

[Don Wilhelm]

Eric and anyone else interested,

I don't have a Nifty Guide, but as an alternative, you may want to 
download the K2 Quick Reference from my website www.w3fpr.com.

Look near the bottom of the opening page.

73,
Don W3FPR

On 2/15/2016 1:52 PM, EricJ wrote:

The K2 Nifty Guide is out of print.

Anyone have one left over from upgrading to K3?



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Re: [Elecraft] New Purchase Sanity Check

[Don Wilhelm]

Mike,

Yes, that is the way it works - and it is automatic.

73,
Don W3FPR

On 2/15/2016 1:28 PM, Michael Greb wrote:

Ready to pull the trigger on a KX3 + PX3 + KXPA100.

I plan on the internal tuner for the KXPA100 but I'd like the option of
working without it.  If the KX3 internal tuner is installed but the KXPA100
with internal ATU is connected will the KX3 correctly bypass its internal
tuner causing the tuner functions to operate on the KXPA100's tuner?

Thanks



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Re: [Elecraft] KX3 pedestrian mobile?

[Steve]

John,
I don’t have photos, but liked this idea for carrying the KX3 on the chest:
- Purchase a set of end plates for the KX3.  There are several sources.
- Use the slots in the end plates for a place to attach a strap to hang the KX3 
either around the neck or suspended from your pack’s shoulder straps

73,
Steve
aa8af

> On Feb 15, 2016, at 1:48 PM, John Fritze  wrote:
> 
> Anyone using the KX3 pedestrian mobile with the radio in front of you?
> What are you holding it in?  Any pictures are appreciated.  Feel free to
> contact direct.

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Re: [Elecraft] PX3 /Keyboard QSO count repeat

[Bob N3MNT]

Thank You as always for fast accurate response.  That is what I was looking
for.  PX3 was fun to use in RTTY test this weekend. 



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Re: [Elecraft] New Purchase Sanity Check

[Bob N3MNT]

When the KXPA100 is on and  power over 10-12 watts  the internal tuner in the
KX3 is bypassed and the tuner in the amp is operational.   If the 



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Re: [Elecraft] (no subject)

[Don Wilhelm]

Jeff,

I am not sure you want Diversity.  I would suggest you turn the SUB on 
(not Diversity) by tapping the SUB button (HOLD will get you into 
Diversity).


With the SUB on, tune to your receive frequency with the VFO A knob.  
Then tap A > B twice to transfer the frequency, mode, etc to VFO B

Then tune with the VFO B knob to your proposed transmit frequency.
Now turn on SPLIT.  Note the arrow in the display next to the TX label 
to the right side now points to VFO B.  That arrow points to the 
frequency where you will transmit.
You will hear the main receiver in your left ear, and the right ear will 
hear what is on your transmit frequency.


If you want to use Diversity, the K3 will behave more like a single 
receiver, but if using 2 antennas (one on the main and the other on the 
sub), you may be able to hear better through QSB.  In diversity, both 
the main and the sub are controlled by the VFO A knob.
If you are in diversity and want to go split, tap the A>B button twice 
and then go to SPLIT.

Move VFO B to your desired transmit frequency.
You will not be able to hear on your transmit frequency unless you hold 
the REV button - while holding that button you will hear the TX 
frequency (but not your RX frequency).


I hope that helps.

73,
Don W3FPR

On 2/15/2016 1:17 PM, Jeff wrote:

Can someone please help me understand if I am doing this correctly? I want to 
RX in diversity and run split more than 10 KHz.?

I have my main RX on 1.8245, then press split button and set the B VFO to 
1.835.  Then I turn on the 2nd RX in diversity, press b-set and use the B VFO 
to move it to 1.8245, narrow the filter to 400 Hz. then press b-set agn.  Now I 
lock the VFOs so they track. SUB and SPLIT indicators are on. Am I still TXing 
on 1.835 and if so how do I know that if VFO B shows the second RX QRG?

Tnx es 73 Jeff W7JW



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[Elecraft] Wanted: K2 Nifty Guide

[EricJ]

The K2 Nifty Guide is out of print.

Anyone have one left over from upgrading to K3?

Please contact off the list.

Eric
KE6US
eric_c...@hotmail.com
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[Elecraft] KX3 pedestrian mobile?

[John Fritze]

Anyone using the KX3 pedestrian mobile with the radio in front of you?
What are you holding it in?  Any pictures are appreciated.  Feel free to
contact direct.

-- 
John Fritze Jr
K2QY
k...@arrl.net
ACACES president 2014
ARES ENY DEC Northern District
Hudson Div. Asst. Director
Twitter: @k2qy
401 261 4996 (cell)
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[Elecraft] New Purchase Sanity Check

[Michael Greb]

Ready to pull the trigger on a KX3 + PX3 + KXPA100.

I plan on the internal tuner for the KXPA100 but I'd like the option of
working without it.  If the KX3 internal tuner is installed but the KXPA100
with internal ATU is connected will the KX3 correctly bypass its internal
tuner causing the tuner functions to operate on the KXPA100's tuner?

Thanks

-- 
Mike Greb
562-MIKEGRB
http://michael.thegrebs.com
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[Elecraft] (no subject)

[Jeff]

Can someone please help me understand if I am doing this correctly? I want to 
RX in diversity and run split more than 10 KHz.? 

I have my main RX on 1.8245, then press split button and set the B VFO to 
1.835.  Then I turn on the 2nd RX in diversity, press b-set and use the B VFO 
to move it to 1.8245, narrow the filter to 400 Hz. then press b-set agn.  Now I 
lock the VFOs so they track. SUB and SPLIT indicators are on. Am I still TXing 
on 1.835 and if so how do I know that if VFO B shows the second RX QRG?   

Tnx es 73 Jeff W7JW
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Re: [Elecraft] P3 TX MON question

[Paul Saffren N6HZ]

Hi Barry, 

The P3TXMON can configured to trigger by sensing the forward RF power at the
coupler.  For K3 users, the P3TXMON uses internal communication with the
K3(S) .  

Kind regards, 

Paul



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Re: [Elecraft] PX3 /Keyboard QSO count repeat

[Paul Saffren N6HZ]

Hi Bob, 

Starting in version 1.39 (currently available) you can put as many \c as you
want to, the number only increments once per message.  In other words, the
counter value only advances once per invocation of the text message. 


Kind regards, 

Paul 



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[Elecraft] Microham Microkeyer II, RFI in mike with my K3

[Guy Olinger K2AV]

Hi Bernie,

If you are running QRO over your roof, your RFI proofing needs to be
perfect. Your situation is only exceeded in nastiness by being next door to
a 50 kW AM station and maybe not then. Your induced common mode RF
voltages on conductors can be double and triple the desired signal voltages
on the cables and ridiculously more than microphone voltages.

One CAN get lucky and get by, but if one does it's only by dumb blind luck
and any change to cable routing or position and count of station equipment
can disable or polute electronic functions.

If you succumb to the temptation to attribute the changes to the last thing
changed or moved, you will be sent down the rabbit hole to join company
with Alice and the Mad Hatter where nothing makes sense any more. This can
include complaints to manufacturers straight from Wonderland requiring
apologies afterward. Been there, done that. Know whereof I speak.

It is quite probable that replacing the box changed cable specifics. Any
connection that is not a tenth of an ohm or less needs to be replaced or
repaired. I have no idea where you got 2 ohms as a satisfactory connection
resistance. Maybe the USB signal itself will tolerate that under
otherwise non-stressed circumstances but it's far away out of bounds for
RFI proofing.

In your case, QRO on the roof, you need to take maximum anti-RF measures on
**ALL** conductors in the shack. Otherwise just changing orientation of
cables may remove or incite RFI, or worse makes RFI intermittent leading to
suspicions of poltergeist.

I have finally gotten to the point where all retail audio cables need to be
replaced with soldered coax or shielded pairs with WOVEN shields.
ESPECIALLY audio cables terminated in RCA plugs which typically have the
cheapest shields known to man. No retail manufacturer is testing them for
RFI susceptibility in rooftop QRO conditions.

There is a good selection of shielded pair and coax cable with Teflon
dielectric/insulation and woven shields easily soldered to *quality* RCA
plugs or other connectors without melting the wire.

I know that QRO on the roof is all that's available for many folks. Just
understand that's the very stiffest possible demand on all RFI proofing
issues. No cheapies, no short cuts, no omissions allowed in the protocol.

73, Guy K2AV

On Monday, February 15, 2016, > wrote:

> Dear all,
>
> just an update..the Microham Microkeyer II has definitely a problem with
> RF!
> I replaced the Microkeyer with a homebrew USB and soundcard interface
> (Built in 2008) and made new cable distribution box..And the problems are
> gone.
>
> I have S-NO 280 on the microkeyer..hope the newer ones are better. But
> definitely not my kind of solution for that cost!
>
> 73s
> Bernie
> DL5RDP
>
> -Ursprüngliche Nachricht-
> Von: Joe Subich, W4TV [mailto:li...@subich.com]
> Gesendet: Freitag, 12. Februar 2016 14:15
> An: elecraft@mailman.qth.net
> Betreff: Re: [Elecraft] Microham Microkeyer II, RFI in mike with my K3
>
>
> > As I recall, I used pin 7 for the mic ground and pin 8 for the PTT
> > ground. In a brief test it worked ok into a dummy load. Is this not
> > correct?
>
> That is correct although with the K3/K3S since the Elecraft mic RFI
> change it should not matter (both pin 7 and pin 8 are connected to
> the "ground" foil on the front panel circuit board).
>
> Early K3 front panels included an RF choke in the mic *and* PTT returns
> which made the "pin 1 problem" much worse.  With the RF choke removed
> (bypassed) the issue is significantly reduced but there may still be a
> problem if the overall station installation has any "RF on the coax."
>
> 73,
>
>... Joe, W4TV
>
>
> On 2/12/2016 7:59 AM, j...@kk9a.com wrote:
> > This week I wired rewired my MicroHAM Micro2R cables for K3S's.  As I
> > recall, I used pin 7 for the mic ground and pin 8 for the PTT ground. In
> a
> > brief test it worked ok into a dummy load. Is this not correct?
> >
> > John KK9A
> >
>
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Re: [Elecraft] 75m

[Eric Swartz - WA6HHQ, Elecraft]

Ad noted in my prior post (covering the other subject line for this thread), 
this OT thread is now closed in the interest of reducing list email overload for 
our readers.


73,

Eric
/elecraft.com/

On 2/14/2016 10:01 PM, Richard Fjeld wrote:

It doesn't help that the FCC is not monitoring the bands like they used to do.

Dick, n0ce

On 2/14/2016 11:24 PM, David Gilbert wrote:


I will have been a ham for 50 years next year, and I believe I can say with 
some authority that the average operator of today is no worse than the ones I 
came across back then.  Our hobby is not free of whackos any more than 
general society is, and if anything we had to suffer more of them 50 years 
ago when ham radio was actually a somewhat mainstream communication medium.


I don't think ham radio has changed as much as you might have.

Dave   AB7E



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Re: [Elecraft] abject buffoonery

[Eric Swartz - WA6HHQ, Elecraft]

Folks - We're drifting a bit far OT from our usual focus. As this is a repeating 
topic in many other forums,it is best covered there or in private emails.


Let's end this thread at this time to reduce list email overload for our 
readers.

73,

Eric
/elecraft.com/

On 2/15/2016 6:34 AM, w7aqk wrote:

Hi All,

This is a major reason why I have almost totally abdicated usage of SSB, and 
stick to CW, which is my preferred mode anyway.  There I can participate in 
relatively nonsense free and enjoyable rag chews with others.  About the only 
time we get substantial craziness on that mode is when there is some sort of 
DXpedition going on.


For the most part, I don't think that, for the most part, these clowns (I 
actually have a much stronger, more profane term for them!) can even copy CW.  
So, it's not much "fun" for them to jam conversations they can't even 
understand.  I also think that alcohol has a great deal to do with what you 
hear on 75 meters. Sometimes it is completely obvious!


I don't know about the rest of you, but I would be willing to pay a 
significant additional fee, and every year if necessary, if FCC could then do 
serious enforcement on the bands.  I know right now they don't have any real 
staff to do it.  You wouldn't even need a particularly high percentage of 
successful enforcement situations to generate substantially beneficial 
results.  Just having a real threat that such actions might be successfully 
captured could be enough to put "the fear of God" into a significant number of 
perpetrators.  Right now, there is little, if any, risk of being caught. So, 
it is like having speed limits, but no enforcement whatsoever!


A lot of people say "just ignore" the incidents.  I tend to agree with that, 
since confrontation only excites the perpetrator--particularly if alcohol is 
involved  You can't argue or reason with a drunk!  I do think recordings 
could be helpful, and if you have the capability, a little "DFing" might add 
some useful info if there was any place such info could be collected for 
further analysis.


I think every ham radio club in the country should take this issue seriously.  
Not only should members "pledge" to avoid such conduct, they should also agree 
to be actively involved in identifying it.  It's hard to believe that a number 
of these perpetrators aren't close enough to someone else that they couldn't 
be better identified.  We need to take some responsibility ourselves for 
trying to reduce such infractions. That doesn't mean direct confrontation, but 
serious information could be useful to authorities.


Just my thoughts.

Dave W7AQK

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Re: [Elecraft] CQ WPX RTTY Contest

[Rick Prather]

I forgot to mention that I also will set the tuning bars in cocoaModem as
close to 1275/1445 (my preferred tones)  as I can and often use the XY
tuning indicator in CCM.

BTW, CCM also has the benefit of being able to use both VFO's and tuning
for the next call while I wait for the "NR?'s and AGN?'s"  to be finished
on the main receiver.  That way is I have a secondary station tuned in on
the SUB I can do a quick A/B switch to work the next one.

Rick
K6LE

On Mon, Feb 15, 2016 at 5:57 AM, David Kuechenmeister 
wrote:

>  I ran my K3 with the K3IOB upgrade card installed. I also have a P3 and
> set it to a 10 KHz span. Before, when I used the line out as an input to
> Fldigi, it seemed like there was a little more tolerance in how I tuned in
> on the space signal. Now, I notice that the K3 decodes text when I get
> reasonably close to the space signal, but Fldigi still needs a little more
> finagling to get it decoding at all.
> I may be back to using the Xonar sound card and cables unless I can
> establish a more consistent tuning procedure on the RTTY signals.
> vy 73,Dave N4KD
>
>
>
>  On Monday, February 15, 2016 12:22 AM, Rick Prather 
> wrote:
>
>
>  I used RUMlogNG for WPX and it worked very well.
>
> My set up though is a bit different than your's I think.
>
> I use the K3 set to FSK D  and cocoaModem as a back up.  I tune the signals
> using my P3 set to about 15 Khz span and tune to the Right (space) signal.
> The only repeats I needed to give didn't surprise me since I am running
> only 100W to a wire.
>
> I found that cocoaModem was slightly better at decoding but most of my
> decodeing and therefore grabbing call signs, etc. was from the RUMlogNG
> display with cocoaModem used mostly as an occasional backup.
>
> Interestingly enough, I found a few situations, especially on weak and/or
> fluttery signals, where the K3 did a much better job of decoding than
> cocoaModem.
>
> I also spent some time running FLDIGI on the side but found it was not
> nearly as good as cocoaModem or the K3 in decoding.
>
> Rick
> K6LE
>
>
>
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Re: [Elecraft] K3 KIO3B - FSK - stereo

[Ian White]

Many thanks to Don and to Rich. I was aware of the first reason but
hadn't been clear about the other two.

73 from Ian GM3SEK


>-Original Message-
>From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
>Richard Ferch
>Sent: 15 February 2016 14:43
>To: elecraft@mailman.qth.net
>Subject: Re: [Elecraft] K3 KIO3B - FSK - stereo
>
>Most media players use the default device. In addition to Windows
>sounds, you wouldn't want sound clips from your Internet browser
playing
>through the radio codec, to pick an example.
>
>Another reason might be that if the K3S or K3+KIO3B is turned off or
>disconnected from the computer, the device would disappear and Windows
>would change the default to some other (possibly unpredictable) device.
>
>There may be yet another reason: I believe that in recent versions of
>Windows, when a device is selected as the default device, Windows
>routinely disables other inputs on that sound card or codec. If, for
>example, the microphone input were selected as the default device, I
>believe that the line input on that same card would be disabled. I
don't
>know whether the KIO3B codec has multiple inputs, so I don't know
>whether this actually applies to it.
>
>73,
>Rich VE3KI
>
>
>W3FPR wrote:
>
>> Ian,
>>
>> The operating system plays its sounds through the default soundcard.
>> You really don't want to transmit those sounds on the air.
>>
>> 73,
>> Don W3FPR
>>
>> On 2/15/2016 6:42 AM, Ian White wrote:
>>> VE3KI wrote:
 Also, make sure that the USB Audio Codec is not selected as the
Default
 Device or the Default Communications Device - these should both be
set
 to the motherboard sound card in your PC.
>>> Please could you explain the reasons for that?
>>>
>>>
>
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Re: [Elecraft] K3 KIO3B - FSK - stereo

[Richard Ferch]

Most media players use the default device. In addition to Windows 
sounds, you wouldn't want sound clips from your Internet browser playing 
through the radio codec, to pick an example.


Another reason might be that if the K3S or K3+KIO3B is turned off or 
disconnected from the computer, the device would disappear and Windows 
would change the default to some other (possibly unpredictable) device.


There may be yet another reason: I believe that in recent versions of 
Windows, when a device is selected as the default device, Windows 
routinely disables other inputs on that sound card or codec. If, for 
example, the microphone input were selected as the default device, I 
believe that the line input on that same card would be disabled. I don't 
know whether the KIO3B codec has multiple inputs, so I don't know 
whether this actually applies to it.


73,
Rich VE3KI


W3FPR wrote:


Ian,

The operating system plays its sounds through the default soundcard.
You really don't want to transmit those sounds on the air.

73,
Don W3FPR

On 2/15/2016 6:42 AM, Ian White wrote:

VE3KI wrote:

Also, make sure that the USB Audio Codec is not selected as the Default
Device or the Default Communications Device - these should both be set
to the motherboard sound card in your PC.

Please could you explain the reasons for that?




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Re: [Elecraft] abject buffoonery

[w7aqk]

Hi All,

This is a major reason why I have almost totally abdicated usage of SSB, and 
stick to CW, which is my preferred mode anyway.  There I can participate in 
relatively nonsense free and enjoyable rag chews with others.  About the 
only time we get substantial craziness on that mode is when there is some 
sort of DXpedition going on.


For the most part, I don't think that, for the most part, these clowns (I 
actually have a much stronger, more profane term for them!) can even copy 
CW.  So, it's not much "fun" for them to jam conversations they can't even 
understand.  I also think that alcohol has a great deal to do with what you 
hear on 75 meters.  Sometimes it is completely obvious!


I don't know about the rest of you, but I would be willing to pay a 
significant additional fee, and every year if necessary, if FCC could then 
do serious enforcement on the bands.  I know right now they don't have any 
real staff to do it.  You wouldn't even need a particularly high percentage 
of successful enforcement situations to generate substantially beneficial 
results.  Just having a real threat that such actions might be successfully 
captured could be enough to put "the fear of God" into a significant number 
of perpetrators.  Right now, there is little, if any, risk of being caught. 
So, it is like having speed limits, but no enforcement whatsoever!


A lot of people say "just ignore" the incidents.  I tend to agree with that, 
since confrontation only excites the perpetrator--particularly if alcohol is 
involved  You can't argue or reason with a drunk!  I do think recordings 
could be helpful, and if you have the capability, a little "DFing" might add 
some useful info if there was any place such info could be collected for 
further analysis.


I think every ham radio club in the country should take this issue 
seriously.  Not only should members "pledge" to avoid such conduct, they 
should also agree to be actively involved in identifying it.  It's hard to 
believe that a number of these perpetrators aren't close enough to someone 
else that they couldn't be better identified.  We need to take some 
responsibility ourselves for trying to reduce such infractions.  That 
doesn't mean direct confrontation, but serious information could be useful 
to authorities.


Just my thoughts.

Dave W7AQK

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Re: [Elecraft] CQ WPX RTTY Contest

[David Kuechenmeister]

 I ran my K3 with the K3IOB upgrade card installed. I also have a P3 and set it 
to a 10 KHz span. Before, when I used the line out as an input to Fldigi, it 
seemed like there was a little more tolerance in how I tuned in on the space 
signal. Now, I notice that the K3 decodes text when I get reasonably close to 
the space signal, but Fldigi still needs a little more finagling to get it 
decoding at all. 
I may be back to using the Xonar sound card and cables unless I can establish a 
more consistent tuning procedure on the RTTY signals.
vy 73,Dave N4KD

   

 On Monday, February 15, 2016 12:22 AM, Rick Prather  wrote:
 

 I used RUMlogNG for WPX and it worked very well.

My set up though is a bit different than your's I think.

I use the K3 set to FSK D  and cocoaModem as a back up.  I tune the signals
using my P3 set to about 15 Khz span and tune to the Right (space) signal.
The only repeats I needed to give didn't surprise me since I am running
only 100W to a wire.

I found that cocoaModem was slightly better at decoding but most of my
decodeing and therefore grabbing call signs, etc. was from the RUMlogNG
display with cocoaModem used mostly as an occasional backup.

Interestingly enough, I found a few situations, especially on weak and/or
fluttery signals, where the K3 did a much better job of decoding than
cocoaModem.

I also spent some time running FLDIGI on the side but found it was not
nearly as good as cocoaModem or the K3 in decoding.

Rick
K6LE


  
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Re: [Elecraft] K1 Low Power on 20M band once ATU is installed...

[Don Wilhelm]

Michael,

Did you change the jumper next to the BNC jack when you installed the 
KAT1?  If you failed to do that, the K1 would show a low power even 
though it was actually developing full power output.

Make sure the ATU menu is set to CAL P.

If you are measuring power output with an external wattmeter, then check 
the soldering of the KAT1 toroid leads.  You should not see any enamel 
on the solder side of the board and you should see a bit of tinned lead 
above the board.


73,
Don W3FPR

On 2/13/2016 11:11 PM, Michael via Elecraft wrote:

I just built a new K1 and had some problems with the output power. To  make
a long story short I
ended up having to lower the values of R5 and  R11...  This brought the
power levels up on
the 40 M band from 1.5  to 6.5 Watts and on the 20 M band from 0.5 to 5.5
Watts.
  
Figured all was well now until I installed the new ATU


For some  reason my output power on the 20M band into a 50 Ohm dummy load
is
only  around 0.7 Watts now with the ATU installed.  If I remove it - it
goes  back up to normal!

Any  ideas?

Thanks,

Michael
n2zdb
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Re: [Elecraft] Microham Microkeyer II, RFI in mike with my K3

[Joe Subich, W4TV]

just an update..the Microham Microkeyer II has definitely a problem

> with RF!

microKEYER II does not have a problem with RF.  You must have an
exceptional problem with common mode RF on your feedline(s) and
that would impact *any* interface in the mic line.

> I replaced the Microkeyer with a homebrew USB and soundcard
> interface (Built in 2008) and made new cable distribution box..And
> the problems are gone.

Unless your homebrew interface includes mic handling circuits with
a wide range preamp, your test in meaningless.  Any change in cable
length can make significant differences in RFI as it moves the high
voltage point.

73,

   ... Joe, W4TV


On 2/15/2016 2:20 AM, bernhard.ho...@bmw.de wrote:

Dear all,

just an update..the Microham Microkeyer II has definitely a problem with RF!
I replaced the Microkeyer with a homebrew USB and soundcard
interface (Built in 2008) and made new cable distribution box..And
the problemsare gone.

I have S-NO 280 on the microkeyer..hope the newer ones are better. But 
definitely not my kind of solution for that cost!

73s
Bernie
DL5RDP

-Ursprüngliche Nachricht-
Von: Joe Subich, W4TV [mailto:li...@subich.com]
Gesendet: Freitag, 12. Februar 2016 14:15
An: elecraft@mailman.qth.net
Betreff: Re: [Elecraft] Microham Microkeyer II, RFI in mike with my K3



As I recall, I used pin 7 for the mic ground and pin 8 for the PTT
ground. In a brief test it worked ok into a dummy load. Is this not
correct?


That is correct although with the K3/K3S since the Elecraft mic RFI
change it should not matter (both pin 7 and pin 8 are connected to
the "ground" foil on the front panel circuit board).

Early K3 front panels included an RF choke in the mic *and* PTT returns
which made the "pin 1 problem" much worse.  With the RF choke removed
(bypassed) the issue is significantly reduced but there may still be a
problem if the overall station installation has any "RF on the coax."

73,

... Joe, W4TV


On 2/12/2016 7:59 AM, j...@kk9a.com wrote:

This week I wired rewired my MicroHAM Micro2R cables for K3S's.  As I
recall, I used pin 7 for the mic ground and pin 8 for the PTT ground. In a
brief test it worked ok into a dummy load. Is this not correct?

John KK9A




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Re: [Elecraft] setting up a kx3, when I get one.

[Jerry Moore]

The Raspberry Pi runs < 1A at +5vdc and does logging/digital with FLDIGI. I've 
not played with the small touch screens available but there's anything from 2" 
up to 10" screens. I don’t run portable yet so my screen is an old 12" flat cpu 
screen. I'm considering a 7" touch screen but I've not found any good SHIELDED 
water proof enclosures for the pi+Screen. I just ordered the Pi 2 and a metal 
case. We'll see what develops. 

Jerry Moore
CDXA, INDEXA, SKCC, Fists
AE4PB, K3S - S.N. 010324
http://www.qrz.com/db/AE4PB
An Amateur is - Considerate, Loyal, Progressive, Friendly, Balanced, and 
Patriotic.

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of a45wg
Sent: Sunday, February 14, 2016 11:48 PM
To: Paul Artman
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] setting up a kx3, when I get one.

The RasberryPI - will work to the KX3. I have used mine on and off for some 
development stuff. 

Portable will be an issue - unless you have a very small screen for logging (I 
personally use a school notebook - and just retype when I get home). What ever 
your choice - Raspberry/Phablet/Notebook/Laptop/Road-Warrior battery life will 
be your governing issue. It seems pointless to me to drag a 14V power source 
just to power a laptop (school notebook requires even less wattage the the KX3) 
- use those stored Watts to radiate a signal.

The KX3 - will do digital modes very well - so even  /P you do not need a 
computer (I would not suggest you try and do contests without one mind you) - 
you just need to be able to send Morse (it is amazing to hear the PSK/RTTY 
being generated).

You could do some large Macro’s (using the KX3 Utility) and not bother with 
most of the CW - but you will always need to say the other parties call-sign 
etc. And soon you will want to join the fun of CW operating (which the KX3 does 
amazingly well also)

Whatever you choose the KX3 - is a great rig…. and so similar to the K3-S it 
makes switching between them almost seamless.

Good 



> On 14 Feb 2016, at 13:14, Paul Artman via Elecraft  
> wrote:
> 
> Planning. On a kx3, when I get the $. I am wandering if I can get by with a 
> raspberry pi, and my kindle tablet, or will need a laptop. I want to do 
> dxing, and some digital. Portable setup stuf.
> 
> Sent from Yahoo Mail on Android
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Re: [Elecraft] K3 KIO3B - FSK - stereo

[Don Wilhelm]

Ian,

The operating system plays its sounds through the default soundcard.
You really don't want to transmit those sounds on the air.

73,
Don W3FPR

On 2/15/2016 6:42 AM, Ian White wrote:

VE3KI wrote:

Also, make sure that the USB Audio Codec is not selected as the Default
Device or the Default Communications Device - these should both be set
to the motherboard sound card in your PC.

Please could you explain the reasons for that?




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Re: [Elecraft] K3 KIO3B - FSK - stereo

[Ian White]

VE3KI wrote:
>
>Also, make sure that the USB Audio Codec is not selected as the Default
>Device or the Default Communications Device - these should both be set
>to the motherboard sound card in your PC.

Please could you explain the reasons for that?

Thanks for the QSO at the weekend (with GM3W).


73 from Ian GM3SEK


>-Original Message-
>From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
>Richard Ferch
>Sent: 12 February 2016 21:54
>To: elecraft@mailman.qth.net
>Subject: Re: [Elecraft] K3 KIO3B - FSK - stereo
>
>Here is something to check:
>
>Right-click the speaker icon in the Task Bar and select Recording
>devices. In the Sound window select the USB Audio Codec and click on
>Properties. In the Properties window click on the Advanced tab and
check
>the Default Format. If it is set to 1 channel, ... change it to 2
>channel, ... .
>
>Also, make sure that the USB Audio Codec is not selected as the Default
>Device or the Default Communications Device - these should both be set
>to the motherboard sound card in your PC.
>
>You should see main RX audio in the left channel. If the subRX is off,
>you might see a bit of leakage from the left channel in the right
>channel, but if the subRX is on you should only see subRX audio. When
>you are transmitting, if your Monitor level is non-zero you should see
>the transmitted signal in both channels.
>
>73,
>Rich VE3KI
>
>
>N2TK wrote:
>
>> Trying to setup the CODEC on the KIO3B. Is it stereo that it will
allow me
>> to do what I am presently doing for two channels?
>>
>> When I select Microphone (4-USB Audio CODEC) for both MMTTY's, I get
>the
>> same signal on both MMTTY's. The second receiver has no impact.
>
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Re: [Elecraft] Microham Microkeyer II, RFI in mike with my K3

[Jim Brown]

On Sun,2/14/2016 11:20 PM, bernhard.ho...@bmw.de wrote:

just an update..the Microham Microkeyer II has definitely a problem with RF!


Without diving into the details, I helped W6OAT chase down RFI issues in 
his station. He had a MicroHam box with an "interface" to the radio that 
was a jumble of wires. Virtually NO attention had been paid to the 
fundamental concept of a transmission line in the interface between it 
and the radio. While that is acceptable at  baseband (audio), it is 
monumentally foolish when RF is present (i.e. an antenna on the roof).


Current flows in loops, whether at DC or at RF, and the loops form both 
antennas and magnetic loops whose coupling is proportional to the loop 
area. In the near field, magnetic coupling dominates, so the loop area 
can be a VERY big deal.  EVERY signal path between devices must be 
treated as a transmission line of RFI is a potential issue. That means 
EVERY signal path should be a twisted pair or a coaxial pair, so that 
the path forms a transmission line. Any interface that does not do this 
is an invitation to RFI if the antenna is close enough, or if the power 
is high enough, or both.


This is NOT an indictment of Microham -- at a CQP expedition a few years 
ago, a team member showed up with an interface betweeen is radio and his 
amp to key the amp that was an RCA to RCA cable with a single wire, no 
shield. Chassis to chassis was depended on for the return. That works 
fine at DC to key the amp, but the resulting current loop area gives 
that circuit VERY STRONG coupling to an RF field, both as a magnetic 
circuit and as an antenna.


Noted RFI guru Henry Ott talks about understanding where ALL the current 
flows, which is revealed by "the hidden schematic lurking behind the 
ground symbol" that causes most issues with RFI and crosstalk.


73, Jim K9YC
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