Re: [Elecraft] Elecraft CW Net Announcement

[George Kidder]

I use one just like this on 30M, and have always thought of it as a 
ground plane.  The drooping radials give a good match to 50 ohms.


73 - George, W3HBM

On 7/26/2020 2:36 PM, Fred Jensen wrote:
[This message came from an external source. If suspicious, report to 
ab...@ilstu.edu]


Ground Plane?

73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 7/25/2020 8:20 PM, kevinr wrote:



   An antenna design is stuck in my head.  It consists of three legs,
each 1/4 wavelength long.  One leg is vertical while the two radials
are 120 degrees below it.  The two radials are connected electrically
while the vertical leg is fed separately.  If it had more radials it
would be called a 1/4 wave vertical.  But the one stuck in my head has
elevated radials and only two of them.  I cannot remember what this
antenna is called.  I know 'inverted Y antenna' doesn't work as a
search term.  Does anyone know what this is usually called so I can
use a better search string?  The low take off angle would be nice.  It
looks like a 20 or 40 meter version would be easy to build and raise.


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Re: [Elecraft] KPA1500 Operation on 6 Meters

[George Kidder]

Internal oscillation suppressed by higher drive level?  What does it do 
in operate with zero drive?



On 6/16/2020 11:25 AM, Ed G wrote:

[This message came from an external source. If suspicious, report to 
ab...@ilstu.edu]

Hi Adrian,
  Yes, I also substituted a new piece of coax of different length going 
right from the K3 to the KPA1500 input…same SWR anomaly still observed.
--Ed, N3CW—


Sent from Mail for Windows 10

From: Adrian
Sent: Tuesday, June 16, 2020 11:09 AM
To: Ed G; Larry (K8UT); elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA1500 Operation on 6 Meters

Just curious to see if you have tried a different length jumper (coax
patch lead between radio & amp) to see if you get the same result  ?

On 17/6/20 12:09 am, Ed G wrote:

This morning I put my DL2K dummy load right on the KPA1500 amp output (tried 
both ANT1 and ANT2)…I am still seeing the same SWR anomaly, where lower drive 
levels are giving high SWR readings on the KPA1500 display.  By putting the 
dummy load right at the KPA1500 output, I eliminated a bunch of coax cables and 
switchboxes.

So at this point the issue appears to be one internal to the KPA1500.  Also 
appears to be not related to any previously-known high power RF causes, as in 
my case the problem is there at low drive levels and goes away at maximum 
drive/RF out.  So I remain puzzled.

--Ed, N3CW—


Sent from Mail for Windows 10

From: Larry (K8UT)
Sent: Monday, June 15, 2020 9:33 PM
To: ed.n...@gmail.com; elecraft@mailman.qth.net
Subject: Re[2]: [Elecraft] KPA1500 Operation on 6 Meters

Ed,

Your dummy load choices at 1500 watts range from expensive and good (Bird) to 
cheap and not-so-good. For example the MFJ-264 is listed as handling 1500 watts 
but if you read the fine print (the derating curve printed on its case ) you're 
limited to 8 seconds at 1500 watts. And each time you stress that dummy load 
its resistor value climbs by a few ohms.

Frustrated with the commercial options available, I built a dummy load using a 
huge heatsink from a salvage VHF transmitter and a series/parallel combination 
of four 50 ohm 250 watt resistors purchased on eBay.

https://www.ebay.com/itm/1PCS-Anaren-RFP-250-50RM-RFP250-50-RF-Power-Flanged-Resistors-250-Watts-50-ohm/133028134252?hash=item1ef9183d6c:g:uHQAAOSwyFhcvsvw

-larry (K8UT)

-- Original Message --
From: "Ed G" 
To: "Larry (K8UT)" ; "elecraft@mailman.qth.net" 

Sent: 2020-06-15 10:57:32 AM
Subject: RE: [Elecraft] KPA1500 Operation on 6 Meters

Hi Larry,
   Yes, exact same problem is there with a known good dummy load in place 
of the Steppir yagi I normally use.
--Ed—


Sent from Mail for Windows 10

From: Larry (K8UT)
Sent: Monday, June 15, 2020 10:09 AM
To: Ed G; elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA1500 Operation on 6 Meters

Ed,

Not seeing that here. SWR value unchanged at 10, 20, 30, 35 watts of
drive. Suggest you test into a dummy load to see if the problem goes
away, which would suggest some issue with power level into the feedline
or antenna.

-larry (K8UT)


-- Original Message --
From: "Ed G" 
To: "elecraft@mailman.qth.net" 
Sent: 2020-06-15 9:48:55 AM
Subject: [Elecraft] KPA1500 Operation on 6 Meters


Folks,
I am trying to understand some odd KPA1500 operation on 6 meters.  When 
setting the power output of my K3 to give varying amounts of drive to the 
KPA1500, I am seeing SWR as displayed on the KPA1500 changing by a significant 
amount depending on the drive level.  This is with the KPA1500 tuner bypassed. 
An LP-100A on the output of the KPA1500 is also used and displays the correct 
low SWR at all drive levels that I would expect to be seeing on the KPA1500 
display.
For example, with 5 watts drive from the K3, I see 1.3 SWR on the 
LP-100, and 2.5:1 on the KPA1500 display.  As I increase drive, the KPA1500 SWR 
display goes down proportionally, until I get to about 40 watts drive. At the 
40 watt drive level, I am seeing a nice healthy 1600 watts output, and both the 
LP-100 and the KPA1500 are showing the same 1.3 SWR.  15 watts drive shows 1.3 
on the LP100 and 2.0:1 on the KPA1500 display. So I am not sure why the SWR 
sensing and display in the KPA1500 is behaving this way?  I do not see this 
oddity on any other bands.
I might also add that attempting to get the KPA1500 internal tuner to 
bring down the high SWR as seen on the KPA1500 results in a drop in SWR 
displayed on the KPA1500 to where SWR almost equals that on the LP-100, but 
using the tuner I would expect that to be even better.
--Ed—




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Re: [Elecraft] NOT the feedline

[George Kidder]

One of my antennas is a commercial "G5RV" fed with 33' of 450 ohm ladder 
line, terminated in a PL-259 pair, with coax from there to the shack.  
Apparently this combination results in very high RF voltage at the 
PL-259, and it arcs over at 1000 W (not from an Elecraft amp!).  This 
combo goes wild when I attempt high power on 80M, although it is stable 
at 100 W.  Just another thing to watch out for!


73 - George, W3HBM

On 6/1/2020 5:59 PM, Ted Edwards W3TB wrote:

[This message came from an external source. If suspicious, report to 
ab...@ilstu.edu]

I am following this with great interest.
Like Alan G0GNX, I also use an OCF, RG-8X out to the current balun in this
case, 300 ohm to the antenna.  K3, KPA-500 and KAT-500.

If I am running stations in a contest on 40m and also 80m CW, It "appears"
that my VSWR rises after a half hour and then the KAT-500 starts to try to
spontaneously retune.  Doesn't happen on 20m and up.  This past weekend in
CQ WPX, I reduced drive so that output was about 300 watts and it all
became tame.

I had thought that it was a heating of the RG-8X; then I changed my mind to
the current balun from Radiowavz that is rated for 1.5 KW.  I think it is
the balun just getting hot out there.  I had used a W2AU 4:1 balun with my
OCF, which is a voltage balun but I didn't know about that -- for upwards
of 40 years and with the Elecraft equipment for about 4 years since I got
the amp/tuner.  I just switched to a current balun last year with one that
I bought at Dayton.

I would have expected more problem with the voltage balun than with the
current balun.  I could change back to the W2AU if needed.

Interesting stuff, so I am reading along.  And my thanks to all of you.

On Mon, Jun 1, 2020 at 4:42 PM Fred Jensen  wrote:


Nearly same experience Bob:  Sloping V, 135 ft legs, from top of 80 ft
tower fed with homemade 600 ohm open wire using a DX Engineering 4:1
"balun" [a strange, usually misunderstood piece of electronic apparatus
often used for the wrong reasons] rated at 10 KW.  It warmed up
noticeably at 1.2 KW RTTY use.  It helps to remember that one can
saturate a ferrite core [especially when very hot] which creates a
racket reminiscent of a non-synchronous spark gap TX.

73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 6/1/2020 1:48 PM, Bob McGraw K4TAX wrote:

Based on my experience, balun power ratings are for MATCHED
conditions. It is rare that hams use a balun in a matched condition.
Thus a 1:1 balun should see 50 ohms on the input and 50 ohms on the
output, while a 4:1 balun should see 200 ohms on the output and 50
ohms on the input.   In the case of a resonant folded dipole, a 4:1
balun is typically operating in a nearly matched condition. All others
combinations are unknown and random.

I run about 500 watts on all bands.  My baluns are rated at 5KW! It
takes 3 or 4 big hunkin' pieces of ferrite to attain this power
level.   My 6 meter balun is a 1/2 wavelength electrically of RG-213.
No ferrite!

Buy or build a balun of your choice.  Using an IR temperature gun,
measure the ambient temperature of the core.  Run about 1/2 rated
power carrier for 30 to 60 seconds.  Measure the temperature again.
If it is warm to hot, this is RF producing heat.   And likely
continuing will produce core failure.   This is not a good balun for
your application.

One of my baluns work between the output of my KAT500 and the balanced
feed line connected to the center of a 256 ft wire.  That antenna
works 160M - 6M with zero issues.   Now, I do run a hybrid balun being
a 4:1 Guanella balun as a transformer, and it is fed with a 1:1 balun
for common mode rejection.

Most single core, i.e. 2 or 3 cores stacked with 2 to 4 windings are
not at all a proper balun design   A Guanella balun will have 2 cores
with 2 windings and then another 2 separate cores with another 2
windings.  These are then wired to produce a 4:1 balun with good
common mode rejection.Most "factory" 4:1 baluns are poorly
designed and built junk.

See https://www.dj0ip.de/balun-stuff/ for further references.

73

Bob, K4TAX

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--
73 de Ted Edwards, W3TB and GØPWW

and thinking about operating CW:
"Do today what others won't,
so you can do tomorrow what others can't."
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Re: [Elecraft] New Mystery: Copying groups vs plain language text (Rather OT)

[George Kidder]

Just as it fell out, I took all my tests from the FCC at 1600 Custom 
House, Boston (was living in the Ct. River Valley at the time.)  For the 
novice, I was printing in block capitals on yellow lined paper, and 
doing fine until I heard a character I didn't recognize, and panic set 
in - shortly relieved by the machine stopping - the character was AR or 
AS (forget which) but wasn't part of the test at all!  I was a Soph. in 
college at the time, and that is a lousy time to get a license which 
lasted only a year, so I converted to a Tech when it expired - didn't 
have to be tested again for code.


Some years later, I finally got up to 13 WPM - must have been 
unremarkable, as I don't really remember it. Then I got tired of trying 
to remember where all the sub-band edges were, and decided to go for the 
Extra.  Same room.  They were supposed to administer the code first and 
the written afterwards, but when he fired up the "Instructograph" (paper 
tape with dots and dashes punched through it) it wouldn't work. So he 
gave me the written (which I passed easily) while he worked on the 
Instructograph.  Never did get it to work, so gave me the code test with 
a portable machine that wasn't too much better.  I'm not really sure 
that I was able to copy a full minute of text, but given all the 
problems (and the fact that he was giving the tests out of order) he 
took pity on me and passed me.  So I got an Extra instead of the 
Advanced.  It was a good 20 years before I got really "into" CW, tho.


George, W3HBM


On 5/1/2020 8:54 PM, Raymond wrote:

[This message came from an external source. If suspicious, report to 
ab...@ilstu.edu]

Took novice mail  exam 1959, Kn1LHN in Vermont  Could not do 13 so got  tech 
license. Tried repeatedly to make 13 until 1975. FCC made agreement with civil 
service for them to do testing. I was in Youngstown TV chief. Took test every 
other month maybe 4 times. Federal building high ceiling cassette tape playing 
code. Had to copy one minute without error. Finally examiner said I passed. 
Almost cried. So did I really pass it or did he feel sorry for me?
  Those of us with attention issues have a lot of trouble copying code. Yes I 
know the code just can’t copy more then a few words
Ray
W8LYJ

Sent from my iPhone


On May 1, 2020, at 18:33, Bill Frantz  wrote:

I do remember sometime spring/summer/autumn of 1960 getting on the Long Island 
Railroad, riding into New York, and then taking the subway much further south 
than I had ever been before. I walked into the office and was greeted by a 
gruff examiner who gave me the tests. I managed to pass both the 5 WPM and the 
novice written and ended up as WV2NOO. Oh, and the gruff examiner congratulated 
me on passing.

73 Bill AE6JV


On 5/1/20 at 1:42 PM, k2...@kanafi.org (Phil Kane) wrote:

Paraphrasing what one of my mentors once said "do not attribute evil
motives on the part of the examiner to the shortcomings on the part of
the examinee".   Being scared of the examiner was one of the rites of
passage that really had no foundation in reality.

---
Bill Frantz| Can't fix stupid, but   | Periwinkle
(408)348-7900  | duct tape can muffle the| 150 Rivermead Road #235
www.pwpconsult.com | sound... - Bill Liebman | Peterborough, NY 03458

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[Elecraft] K3/KAT500/XV integration

[George Kidder]

GM,

I am trying to get my K3 - KAT500 combination (which works well alone) 
to accept the addition of a XV144 (which works well with the K3 alone).  
Having to plug and unplug control cables to switch from HF to VHF is a 
non-starter.  I had hoped to pick of the control for the XV144 from the 
"AMP" socket on the KAT500, but when this is done, I get the message 
"turn on KAT500" on the K3 display, and nothing works until the plug is 
removed from the XV144.


I have contacted Support about this, but thought I would also see if the 
collective wisdom of this group can give any guidance.


Thanks for your consideration,

George, W3HBM (hunkered down at home in ) Bar Harbor, ME

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[Elecraft] Transverter wanted

[George Kidder]

Anyone have a XV-144 transverter for sale, unbuilt or in good operating 
condition?  Contact me direct. Thanks - George


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Re: [Elecraft] KX2 color option: Army green (olive)?

[George Kidder]

Yellow reminds me of the CD version of the Gonset Communicator - ugly!

George, W3HBM

On 3/17/2020 1:51 PM, Walter Underwood wrote:

[This message came from an external source. If suspicious, report to 
ab...@ilstu.edu]

A bazllion years ago, Zone VI insisted on making a 4x5 field camera bag in 
white, so it wouldn’t heat up in the sun.

https://www.keh.com/shop/large-format-zone-vi-15x11x9-wht-4x5-669764.html

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


On Mar 16, 2020, at 11:13 AM, Steve KC6ZKT  wrote:

Several of us SOTA operators have asked for a high visibility color
option (orange or green-yellow). I think I would choose the current
charcoal over olive drab.

On 3/16/20 10:37 AM, Phil Hystad via Elecraft wrote:

My Elecraft equipment is already olive drab — I favor black olives.

:-}   K7PEH



On Mar 16, 2020, at 10:19 AM, Wayne Burdick  wrote:

One of our customers who has outfitted units with KX2s is hoping we'll provide 
an Army-green case color option (olive drab). Note: We're not talking about 
camo -- just a solid color :)

To make such an option viable we'd need to know if there's enough demand, both 
military and otherwise.

Please drop me an email if you might be interested, or have an opinion on this 
possibility.

Thanks,

Wayne
N6KR

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Re: [Elecraft] ARRL book on receiving antennas

[George Kidder]

"The proof of the pudding is in the eating thereof."

73 - W3HBM


On 9/9/2018 3:39 PM, Bob McGraw K4TAX wrote:

How does one measure transmit antenna efficiency?

Bob, K4TAX


Sent from my iPhone


On Sep 9, 2018, at 2:36 PM, Mel Farrer via Elecraft  
wrote:

Great Don,
You and I grew up in the same time era..
Now, I am wiser and have more CRS,Anyway, Here is my take on antennas in general. 
 I have MANY that I can chose from at any time, HOWEVER,  Some antennas "hear" 
better even if they are not as efficient as my transmitting antenna.  The crazy thing is 
the good receiving antenna, when things get tough, are not the most efficient on 
transmit.  Does that make sense?  I hope so.
Mel, K6KBE

  From: Don Roberts via Elecraft 
To: "Elecraft@mailman.qth.net" 
Sent: Sunday, September 9, 2018 12:27 PM
Subject: [Elecraft] ARRL book on receiving antennas

Having been a ham since 1956, I also agree from my experience, that I along 
with every ham I knew, used the same antenna to receive and transmit. From my 
first home brew one tube, through my first Globe Chief kit, through Globe 
Scout, NCX3, and Globe GTX 550, all in the 50/s and into the 60/s, and all had 
the same antenna for receive and transmit. I too, went from the dpdt knife 
switch, to the Dow Key relay. My QSL collection  confirms this for the stations 
worked during that period.
73, Don W4CBS
Sent from Yahoo Mail on Android
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[Elecraft] KAT500 Utility problem

[George Kidder]

Hi gang,

I hope this is a minor problem, but I cannot seem to solve it.  I have a 
K3 running 5.53 firmware, and a recently acquired KAT500. They are 
connected as in Figure 2 of the KAT500 manual, using the KPAK3AUX cable 
with the key line interrupter, and a separate key line to activate my 
AL-80A amplifier.  Everything seems to work "just as per" with the 
exception of the frequency tracking function on receive.  This was 
running at one time; I did a tune every time the K3 crossed a frequency 
boundary, and it seemed to track thereafter.  Now it won't track - no 
relay noise from one end of the band to the other.  It seems to remember 
specific settings, and will re-tune on transmit, but does not re-tune on 
VFO movement.  (No split freq, either.)  There is no KAT3 in the K3, so 
CONFIG:KAT3 indicates "not inSt", but tap 1 toggles getween KAT500N and 
KAT500Y, and was left in the latter position.


This is no big deal, but it would be handy if the KAT500 would return on 
receive to the last settings for that frequency, rather than wait for a 
transmit pulse.  Besides, it is supposed to do just that!


Any thoughts?

George, W3HBM

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Re: [Elecraft] K3s meter

[George Kidder]

Hi all,

I initially started using data modes by the "set the power to maximum 
..." method, and experienced the same problems that others have seen, 
although with care the transmissions were proper.  I like to run digital 
at 50 W max, to lessen the strain on the equipment.  The advantage of 
this method was that the power on the band in use was not reduced, so 
that when going back to SW or SSB, the full power was still set.  The 
"K3 recommended " method does a fine job, but requires reducing the 
power to 50 W.  Then, when one returns to CW or SSB, you are still at 
50W, since power is not saved "per mode".


Would a software change which saves power "per mode" as well as "per 
band" be possible?  If so, I respectfully request it.


George, W3HBM


On 1/7/2017 5:35 PM, Don Wilhelm wrote:

All,

Guy is quite correct.  The K3 controls power very well, so if you have 
set the power knob to some particular power, that will be very close 
to the power you actually get.  There is normally no need to monitor 
it - as long as other conditions are followed.


The most common error for soundcard data modes is for hams who choose 
to follow the common internet advice to "set the power to maximum and 
control the power with the audio drive" - that does not work well with 
the K3, K3S, KX2 or KX3 (or the K2 for that matter).  Drive the 
Elecraft ALC meter as indicated in the manual - 5 to 7 bars for SSB 
and 4 bars solid with the 5th bar flickering for soundcard data modes.


Elecraft radios do not control power in the same way as other 
transceivers, so follow the instructions given for your Elecraft 
transceiver and first set the audio drive properly and control the 
power output with the power knob.  Failure to do that will result in 
what I call "power hunting" where the power output will vary 
significantly.


If I must elaborate on the "why" of all this, Elecraft radios control 
the power output in a closed loop - other amateur transceivers use an 
open loop "drive" control, commercial transceivers may use a closed 
loop system similar to Elecraft. The power output is measured and the 
MCU compares that output with the power requested by the power knob.  
If the actual power is less than requested, the drive will be 
increased to make the output equal to that requested.  So if the audio 
drive is not sufficient, yes power will be lower than the requested 
value and the transceiver will go to full possible drive (and excess 
power will be produced when the audio output is increased).


For those who are concerned about the ALC meter indication, the onset 
of ALC is at the 5th bar on the meter - the 4th bar is the "NO ALC" 
point for the K3 (KX3, KX2 and K3S).


For the K2, increase the audio until you have ALC indicated, and then 
back off the audio just enough that no bars are displayed.


The real key is to set the audio as instructed in the manual, and then 
control the power with the power knob.  That goes for voice modes as 
well as soundcard data modes.


73,
Don W3FPR


On 1/7/2017 1:51 PM, Guy Olinger K2AV wrote:

Hi Richard,

The issue with your request is that there is only **one** line of 
display

"dots" on the display. The single line of dots is interpreted with the
upper graticule in RX, and with the two lower graticules on TX.

For what you want, there would need to be two rows of dots driven
independently. Or there would need to be a front panel button to 
switch the

meaning of the single row of dots. Ah, but we already have the button.

Also, the change would require *both* firmware *and* changing out the
display to create the **two** lines of dots on the display. Note that 
the

graticules do not change. The display is not driven pixels like a
smartphone display. Therefore it could not just be a new CONFIG: 
option in
firmware. The request would almost certainly need to be implemented 
with a

new transceiver.

As it is, on voice if CMP and ALC is properly set, on a K3/K3S the power
out is very predictable for a given PWR setting, more so for a K3/K3S 
than

most. In any event, TX SSB with an amp, various stand-alone power meters
deal more substantially with power out aspects.

73, Guy K2AV

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Re: [Elecraft] Fldigi - K3 connection

[George Kidder]

Hi Brian,

Thanks for the reply.  I had found that "howto" file, but can't make 
much sense of it.  The current K3.xml file relays changes between the 
rig and the two little blue boxes under the frequency display, but these 
changes are not reflected in the fldigi operate mode, nor do changes in 
the op mode result in changes in the K3. Nor do the changes in these 
little boxes get reflected in the log entry, which is very annoying.


So do your modifications correct these problems?  If so, could I have a 
copy of it.


73 and Happy New Year,

George


On 1/1/2017 10:37 AM, Brian Waterworth wrote:

Yes, I have had success with my KX3 and FlDigi by modifying the rig xml for
the K3 as a starting point.  Here is the howto:
http://www.w1hkj.com/FldigiHelp/rig_xml_page.html

It took me a little longer to figure out the xml file's relationships, but
this howto didn't exist then.

Once you see the linkages among the various XML elements, you will be
changing the k3.xml file with ease.

Have fun !!

regards,
Brian
VE3IBW / CG3IBW
Canada's Sesquicentennial (https://wp.rac.ca/special-event-canada150/)


On Sun, Jan 1, 2017 at 10:02 AM, George Kidder <gkid...@ilstu.edu> wrote:


Hi gang,
I am running fldigi with my K3, and everything works as indicated in the
manual.  It would be useful if fldigi was able to poll the K3 for mode
information, and set itself accordingly.  I suspect that a modification of
the K3.xml file might accomplish this, but I don't know enough about the
programming to see where.

Has anyone succeeded in getting mode information from the K3 to fldigi?

Thanks,
George, W3HBM

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[Elecraft] Fldigi - K3 connection

[George Kidder]

Hi gang,
I am running fldigi with my K3, and everything works as indicated in the 
manual.  It would be useful if fldigi was able to poll the K3 for mode 
information, and set itself accordingly.  I suspect that a modification 
of the K3.xml file might accomplish this, but I don't know enough about 
the programming to see where.


Has anyone succeeded in getting mode information from the K3 to fldigi?

Thanks,
George, W3HBM

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Re: [Elecraft] RemoteRig Microphone Question

[George Kidder]

The XMIT button should parallel the foot switch.  I would bet your 
problem was pressing the button for too long - which activates the tune 
function with (as you observe) no audio.  Just "tap" the button and it 
should put you into transmit with audio.


73 - George - W3HBM


On 12/26/2016 11:57 PM, Jim Larson wrote:

I figured out what the problem was.

I was using the XMIT button on the front of the K3S to go to transmit mode.  
The TX light turned on, but no audio was passed.  I then plugged in a foot 
switch on the mic cable and the remote goes into transmit mode and passes audio.

It appears to have been user error on my part, thinking that the XMIT button 
would do the trick.

Thanks for the input from a couple of guys.

73, Jim - KK7A



On Dec 26, 2016, at 6:49 PM, Jim Larson  wrote:

Hi Mitch.  Thanks for the response.

The Heil is plugged into the front AUX/MIC jack.  The headset first goes 
through the adapter changing the 1/8” plug to plug compatible with the front of 
the K3S.  That plug then goes into a second adapter that converts it into the 
RJ45 plug that connects to the AUX/MIC jack.

 From what I can gather, then iC element is a condenser type that must be 
powered.  I’m guessing the K3S supplies that voltage since it works locally.  
The RemoteRig manual says the following:

"Control-RRC only: JMP-1 is placed behind the TTL connector. With the strap in place 
a DC voltage is feed to the microphone element. All ICOM microphones should be DC-feed. 
Dynamic microphones like the ones used by Kenwood should not be DC-feed. HEIL microphones 
should not be DC-feed either."
It kind of contradicts since it states that Hiel mics should not be DC fed, but 
maybe that was for the older HC4/5 elements.

Anyway, all of the pieces were purchase from Elecraft, so I would assume they 
would all work together.  :-)

Jim



On Dec 26, 2016, at 6:35 PM, Mitch Wolfson, DJØQN / K7DX > wrote:

Jim,

Is the Heil plugged into the rear, or the front? If in the rea, then you must 
first unplug the RRC to prevent a remote connect, then switch the audio to the 
rear jack. If you leave the RRC's connected, you will only change the remote K3 
and not the control K3.

73,
Mitch DJ0QN / K7DX

Mitch Wolfson DJØQN / K7DX
10285 Boca Cir, Naples, FL 34109
Skype: mitchwo
USA: Home:+1-239-221-9600 - Mobile:+1-424-288-9171
Germany: Home:+49 89 32152700 - Mobile:+49 172 8374436

On 26.12.2016 20:27, Jim Larson wrote:

I have a K3S connected to a remote K3 using the RemoteRig boxes.  With the MH2 
hand mic everything works great, but with my new Heil ProSet with the iC 
element (purchased from Elecraft), I do not get any transmit audio at all.  
Running the ProSet into the local K3S (no RemoteRig), I am getting audio out, 
so I know the headset is fine.

Is there a configuration change that needs to be made on the RemoteRig to work 
with this ProSet iC element?

Thanks, Jim - KK7A


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Re: [Elecraft] KAT500 without KPA500

[George Kidder]

I seem not to have made myself very clear.  Let's leave the amp (both 
the AL-80A and the KPS500 out of consideration - I can deal with those 
later.  My question is - can one use a _E850463 Aux cable_ to transfer 
band, frequency etc. information directly from the K3 to the KAT500, 
with no amplifier involved?  I know one can make use of the RCA cables 
to control the keying, and the amplifier will detect frequency, 
presumably from anything down to a Heath AT-1 (if anyone remembers what 
that was.)  This is not the question.  When controlled through the Aux 
cable, there are a number of useful functions available (along with 
keying control) which I would expect might be available if the Aux cable 
connected the K3 and the KAT3 directly.


The KAT500 manual pussy-foots around this issue - there are hints that 
it might work, but no definitive statement.


Has anyone tried this method?  With what results?  Dick's response seems 
to indicate that it won't work.


George, W3HBM



On 12/17/2016) 1:20 PM, Dick Dievendorff wrote:

Should be fine.

Use a cable with RCA plugs to connect the K3's KEY OUT connector to one of
the KAT500's PTT RELAY connectors, and another RCA cable the other KAT500
PTT RELAY connector to the amplifier KEY IN.This allows the KAT500 to
interrupt the PA key line during tuning.

When you move to a KPA500, add an additional 15-pin ACC cable from KAT500 to
amp, and don't use the RCA cables, as the key lines are incorporated in the
15-pin cables.

73 de Dick, K6KR

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of George
Kidder
Sent: Saturday, December 17, 2016 08:09
To: elecraft@mailman.qth.net
Subject: [Elecraft] KAT500 without KPA500

I am considering purchase of the KAT500 to use with my K3 and an old AL-80A,
with a view to future expansion to the KPA500.  Is there any reason why an
Auxbus cable direct from the K3 to the KAT500 would not provide the
necessary band and frequency information?

George, W3HBM
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[Elecraft] KAT500 without KPA500

[George Kidder]

I am considering purchase of the KAT500 to use with my K3 and an old 
AL-80A, with a view to future expansion to the KPA500.  Is there any 
reason why an Auxbus cable direct from the K3 to the KAT500 would not 
provide the necessary band and frequency information?


George, W3HBM
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Re: [Elecraft] LP Bridge crashes with K3

[George Kidder]

Sorry, Larry, but that didn't do it.  (Testing takes a long time!)  Ran 
OK with both sliders max left, for about a day.  Then crashed after 2 
hours, reset with full reboot, crashed again after after several more 
hours.  In short, no change.  Did I change the right thing?  ["control 
panel, device manager, ports, communications port (com 1), port 
settings, advanced.  "Use FIFO buffers" was checked, moved both sliders 
from full right to full left]


Or should I have been putzing with the Eltima settings (virtual Com 19 
and com4) which are called up by LP-BRIDGE?  I cannot seem to find any 
buffer size settings for these virtual ports.


I just now unchecked the "use FIFO buffers" box.  Sliders are grayed 
out.  Seems to work, except now NaP3 has lost it's memory for the last 
frequency used.  Will run this way and see what happens.


Thanks

George, W3HBM


On 12/7/2016 10:43 PM, Larry Phipps wrote:

The largest option that they offer for both xmt and rcv buffers.

Larry


On 12/7/2016 7:34 PM, elecraft-requ...@mailman.qth.net wrote:

Subject: Re: [Elecraft] LP Bridge crashes with K3
>Date: Sun, 04 Dec 2016 18:43:53 -0500
>From: George Kidder<gkid...@ilstu.edu>
>Reply-To:gkid...@ilstu.edu
>To:elecraft@mailman.qth.net
>
>
>
>No I have not, Larry.  What settings do you recommend for starters?
>
>George
>
>
>On 12/4/2016 11:02 AM, Larry Phipps wrote:
>

>>Have you tried adjusting the buffer settings in Device Mgr for your
>>serial port?
>>
>>Larry N8LP


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Re: [Elecraft] Fwd: Re: K3 signal at 28004

[George Kidder]

 I also have a K3/100 (4094), original synthesizer, no KAT500 or KAT3.  
This discussion triggered a look at 28 MHz region. Curiously, there is a 
signal at 27.999.890, which seems to have a set of sidebands, 4 on each 
side spaced 2.39 KHz, as seen on the NaP3 panscope..  This signal is 
coming in on the antenna line, since it is strongest on my 80 M G5RV and 
the 160 M vertical, audible but weaker on the 10 meter vertical (a 
12AVQ) and all other antennas.  A weak signal is audible on a dummy load 
(an old Heath "Cantenna") at the end of 100' of coax and located 60 ft 
away from the shack.  No guarantees that the coaxes are not leaking, though.


At any rate, this is the report KE2WY was looking for.

For whatever that is worth - 73

George, W3HBM


On 12/11/2016 1:38 PM, Robert G Strickland wrote:
I have an original K3, #6232, with the new synthesizer. I hear the 
signal at 28.004.55. It is S5 with the KAT500 turned on in either the 
AUTO of MAN mode. In the BYP mode or with the KAT turned off, the 
signal is still there but drops to an S3.


Interesting that while "everyone" hears it, not everyone hears it at 
the same, exact frequency. Also, no one else has mentioned being able 
to hear it, however faintly, with the tuner off or in the BYP mode.


...robert, KE2WY

On 12/11/2016 16:54, Mark E. Musick wrote:
I have a K3S and the signal is at 28004.15. It is coming from the 
KAT500.
The signal is there even when the KAT500 is turned off from the front 
panel.

It vanishes when the KAT500 is disconnected from its power supply.
I seem to remember a discussion about this before, but I never 
checked my

KAT500 for the symptom.
Jim, what was the mod? I assume it is something Elecraft supplies and 
we can

install it ourselves?

Mark, WB9CIF

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of 
Mike

Harris
Sent: Sunday, December 11, 2016 1:24 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Fwd: Re: K3 signal at 28004




 Forwarded Message 
Subject: Re: [Elecraft] K3 signal at 28004
Date: Sun, 11 Dec 2016 10:23:38 -0300
From: Mike Harris 
To: James Bennett 

I have that signal on my K3 without any other Elecraft peripherals 
wrapped

around it, internally it is pretty well stuffed with options.
However, I have installed the K3s KIO3B and KXV3B and observe the 
following:


With the antenna connected and using the 500Hz 5 pole CW filter if I 
tune

off 1kHz and set the dBV metering to 0dBV+/- on the noise floor when re
tuning to the signal I see 3dB+/- increase.

Enabling PRE 1 and re zeroing the dBV reading on tune increases to
+11dBV+/-.

Enabling Pre 2 and re zeroing the dBV reading on tune the signal has
vanished.

Pre 1 and Pre 2 are not co located and it is possible that layout is
determining what is being picked up internally.

Maybe a K3s owner would like to report the presence or not of this 
signal.

The K3s RF board has apparently been redesigned making it quieter.

Cycling the preamps on an weak external signal coming in off the 
antenna,
results in the expected changes in signal and noise, that is when Pre 
2 is

enabled the external signal doesn't vanish.

This will need to be re visited using my XG3 on 1uV to eliminate QSB
effects.

Regards,

Mike VP8NO

On 11/12/2016 02:51, James Bennett wrote:
Hank - I had that same signal at 28.004 and it was caused by my 
KAT500, as

I recall. Elecraft has a fix for that - simple mod to the KAT500, if I
recall correctly. Do you have a KAT500 and have you possibly removed 
power
from it? If so, that's probably where your signal has gone. Just a 
guess


Jim Bennett / W6JHB
Folsom, CA


On Dec 10, 2016, at 5:30 PM, HankP  wrote:

Ok I give up - I always have a strong signal about 28004 on my K3 and
it was there this morning just like always and most all day - now its
GONE and the rx seems like its still working normally -107 dBm on the
P3 for the 1 uv in . TX ok too. Just no 28004 ??? What is the magic
?? Hank K7HP

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Post: 

Re: [Elecraft] Fwd: Re: LP Bridge crashes with K3

[George Kidder]

Lynn:  Since the computer is not connected to the network, there should 
be little potential for evil except that which I generate myself!  The 
major evil is the power that it draws!


Tom and Guy:  It certainly begins to sound as if the drivers are at 
fault.  I formerly ran the program on my old XP machine with no 
problems, although I don't really remember if I gave it the "24 hour 
stress test".  But that machine is too slow to use all the programs I 
want to use.  But, Tom, I don't think it is memory leak, since running 
Task Manager and looking at the memory usage, I get a steady value 
around 1.1 GB for everything that is running, and this value does not 
change over 24 hours.  Curiously, however, NaP3's CPU usage shows big 
spikes about every 20 seconds, going from ~20% to about 60% and back 
again.  Both processors do this in parallel.  This is not a LPB problem, 
however, since LPB shows a steady, low usage if NaP3 is not running.


So, with a big thanks to everyone who replied, I will take the easy way 
out and shut down the computer at night.  Maybe some day I will 
understand enough to use a different cure.


73 - George, W3HBM


On 12/6/2016 2:07 PM, Lynn W. Taylor, WB6UUT wrote:
Computers that are turned off are safe from all kinds of potential 
evil.  That would be my recommendation.


On 12/6/2016 10:37 AM, George Kidder wrote:
So again I am at the end of my short rope!  Maybe I should shut down 
the system EVERY night.  That seems to cure it.


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[Elecraft] Fwd: Re: LP Bridge crashes with K3

[George Kidder]

Larry and all,

I have now tried adjusting the buffer settings.  Originally, they were 
set full "right" (High, 14 for receive, High 16 for transmit)  I moved 
the sliders to about 3/4 of full scale - still got a LPB crash in about 
7 hours, while running NaP3 and FLDigi through LPB.  I next tried the 
"correct connection problems" setting, full left (1) on each.  This time 
it ran more than 3 but less than 20 hours (overnight run) and while LPB 
did not crash, NaP3 did, which requires complete computer reboot. So it 
is not clear that the buffer settings are doing anything except to slow 
down the reaction of FLDigi to frequency changes - takes about 5 seconds 
now.


So again I am at the end of my short rope!  Maybe I should shut down the 
system EVERY night.  That seems to cure it.


George


 Forwarded Message 
Subject:Re: [Elecraft] LP Bridge crashes with K3
Date:   Sun, 04 Dec 2016 18:43:53 -0500
From:   George Kidder <gkid...@ilstu.edu>
Reply-To:   gkid...@ilstu.edu
To: elecraft@mailman.qth.net



No I have not, Larry.  What settings do you recommend for starters?

George


On 12/4/2016 11:02 AM, Larry Phipps wrote:

Have you tried adjusting the buffer settings in Device Mgr for your
serial port?

Larry N8LP

Date: Sat, 3 Dec 2016 09:33:33 -0500
From: George Kidder<gkid...@ilstu.edu>
To: 'Elecraft Reflector'<elecraft@mailman.qth.net>
Subject: [Elecraft] LP Bridge crashes with K3
Message-ID:<a6a9a38b-ed36-ec28-ae6f-e60d63ad2...@ilstu.edu>
Content-Type: text/plain; charset=utf-8; format=flowed

OK, gang!  I've tried everything I can think of, and am now looking for
some additional thoughts.

Equipment: K3 (unmodified) with firmware 5.53, computer (2.99 GHz dual
core, 4 GB memory) running Win 7, LP-Bridge (LPB) set for 200 mS delay.
The computer is not connected to the internet, and all programs are
brought in from another computer using a flash drive.

Problem:  At random but long intervals (hours) LP-Bridge crashes,
displaying error 13 (type mismatch).  Clearing this window causes
program to close.  This behavior is seen with no external programs
connected to LPB, and with LPB set to any polling rate from 200 mS
(default) to as much as 1000 mS.  It is seen when LPB2 is used and the
baud rate is reduced to 4800.  When the crash occurs, the error seems to
be in a response from the K3 - for instance, the "Rig Received Text"
window shows "IS 0|00;" while it should show "IS 0600;".  In this case
the K3 was set to CW mode.  In LSB mode, the same window shows "CW 6+;"
where I presume it should have been "CW 60;".  This damaged text shows
up in all windows (Rig received, K3 Com port, Power SCR-IF Aux CAT port,
etc.)

Attempted resolution includes reloading the K3 firmware and reloading
LPB from the website after clearing out all remnants of the old
program.  Nothing helps - LPB still crashes when allowed to run for
several hours.  Other programs not affected.  Computer is on a UPS, so
momentary power outage would not be a cause (even if there should be one
every night!)

Clearly, there is a communication failure between the K3 and LPB, since
it occurs with nothing else connected.  Is the problem with the K3, LBP
or the Win 7 operating system which sits between them?  And what more
can I try to fix it?

Your thoughts will be greatly appreciated.

George, W3HBM


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Re: [Elecraft] Headset/Mic Suggestions

[George Kidder]

Hi Bill,

I have used a computer headset with my K3 for many years.  It seems to 
be a noise-cancelling variety - at least it has the set of noise holes 
in the back of the microphone case.  Very light weight, but does not 
exclude room noise on receive - which for me is good, since I can hear 
the XYL over it!  Just plug into the back of the rig, set rig for rear 
input and bias, and you're off.


I don't remember where I got the headset, but it certainly was not 
expensive.  Maybe $10 at the time.


George, W3HBM


On 12/5/2016 4:46 PM, Bill Gaines wrote:

Since I seldom use SSB I have not had the need to ask this question and I 
realize the responses may vary as much as belly buttons. I have a K3 and I also 
have the hand held microphone. I want to obtain a headset with an attached 
microphone to use with this radio just in case I may want to do some SSB work. 
I used to have a noise cancelling headset which I really liked because my shack 
is located in the laundry/utility room and it seems that the washer and/or 
dryer runs as often as the furnace does. The company that did make the noise 
cancelling headset no longer makes them so I am now trying to find out what 
other hams use or what is in the market place. I am especially interested in a 
noise cancelling headset with an attached microphone that sounds good on a K3.

Thank you Bill AD8P
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Re: [Elecraft] LP Bridge crashes with K3

[George Kidder]

No I have not, Larry.  What settings do you recommend for starters?

George


On 12/4/2016 11:02 AM, Larry Phipps wrote:
Have you tried adjusting the buffer settings in Device Mgr for your 
serial port?


Larry N8LP

Date: Sat, 3 Dec 2016 09:33:33 -0500
From: George Kidder<gkid...@ilstu.edu>
To: 'Elecraft Reflector'<elecraft@mailman.qth.net>
Subject: [Elecraft] LP Bridge crashes with K3
Message-ID:<a6a9a38b-ed36-ec28-ae6f-e60d63ad2...@ilstu.edu>
Content-Type: text/plain; charset=utf-8; format=flowed

OK, gang!  I've tried everything I can think of, and am now looking for
some additional thoughts.

Equipment: K3 (unmodified) with firmware 5.53, computer (2.99 GHz dual
core, 4 GB memory) running Win 7, LP-Bridge (LPB) set for 200 mS delay.
The computer is not connected to the internet, and all programs are
brought in from another computer using a flash drive.

Problem:  At random but long intervals (hours) LP-Bridge crashes,
displaying error 13 (type mismatch).  Clearing this window causes
program to close.  This behavior is seen with no external programs
connected to LPB, and with LPB set to any polling rate from 200 mS
(default) to as much as 1000 mS.  It is seen when LPB2 is used and the
baud rate is reduced to 4800.  When the crash occurs, the error seems to
be in a response from the K3 - for instance, the "Rig Received Text"
window shows "IS 0|00;" while it should show "IS 0600;".  In this case
the K3 was set to CW mode.  In LSB mode, the same window shows "CW 6+;"
where I presume it should have been "CW 60;".  This damaged text shows
up in all windows (Rig received, K3 Com port, Power SCR-IF Aux CAT port,
etc.)

Attempted resolution includes reloading the K3 firmware and reloading
LPB from the website after clearing out all remnants of the old
program.  Nothing helps - LPB still crashes when allowed to run for
several hours.  Other programs not affected.  Computer is on a UPS, so
momentary power outage would not be a cause (even if there should be one
every night!)

Clearly, there is a communication failure between the K3 and LPB, since
it occurs with nothing else connected.  Is the problem with the K3, LBP
or the Win 7 operating system which sits between them?  And what more
can I try to fix it?

Your thoughts will be greatly appreciated.

George, W3HBM


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Re: [Elecraft] Help with remote side tone setup

[George Kidder]

The following answered my similar question:  The version I received was 
5.53, and the monitor tone is back.


George, W3HBM

I believe this is corrected in the latest field-test firmware release (5.53) 
which I'll send you.

73,
Wayne
N6KR


On Sep 8, 2016, at 8:34 AM, Classe Bergman  wrote:

Hi,
Today I upgraded my K3 with new FW, I was using 5.38/2.86 and I installed
5.50/2.87
I then discovered that the CW Monitor audio was lost on Lin Out. First I
tought  that some settings was messed up but could not find anything. I
then downgraded my K3 to 5.38/2.86 and the CW Monitor audio was back ! I
found that if I change settings from LIN OUT = "Nor"as I normaly use  to
"=Phones", the CW Monitor audio comes back. So something have changed the
function of Line Out audio in the new FW release.
Since all audio levels follows the Front AF vol  when using  "=Phones" this
mess up levels to my soundcard in the PC. My K3 s/n 1464 have the old KIO
board without USB interface

Is this a known bug ( or maybe a feature ..) ?

73 Classe SM3GSK


On 12/3/2016 3:42 PM, Jim - KE8G wrote:

Hi All,
I am having a problem and I hope someone out there might be able to help me.

I am putting the final touches on setting up the station to operate remotely.  
I have used this setup last year and it worked perfectly.  This year I am 
having a problem with receiving the CW side tone.

Here's the set up:
Both the remote & control PCs are running Win7 64 bit.
I am using a Webrelay to turn on the K3.
I am using TeamViewer to remote into the "remote" PC.
I am using Win4K3Suite to control the raido.
I am using N1mm+ for my logging/contesting, etc.
I use Skype on both computers to hear the audio from the K3 radio and see the 
P3 via webcam

On the control side, I can hear the background noise and stations and work (S7P 
and run) with no problem, just can't hear my side tone.

I come to the "remote" side, using N1MM+ for S and run, I can hear everything 
including the side tone.

For some reason, the side tone is not coming over to the control PC.

I think that's everything!

Any ideas?  Maybe a setting?  The Monitor level is set fine on the K3, so 
that's not the problem.

I contacted Tom, author of Win4K3Suite and he suggested I contact this group.

Thanks in advance,
73 de Jim - KE8G
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Re: [Elecraft] LP Bridge crashes with K3

[George Kidder]

Hi all,

Lots of good thoughts there.  I should have mentioned a number of 
things:  The connection is via a RS-232 cable, not by USB converter.  
There is only one "real" com port on this computer (COM 1) so I cannot 
check this by substitution unless I were to use a USB to RS-232 
converter.  The failure occurs with no RF output, and with any mode I 
have tried.  The LPB version is 1.1.0; I only tried LPB2 as a way of 
using a slower baud rate, since LPB is fixed at 38K.  LPB2 crashes as 
well!  Re-starting LPB does not re-establish connections if other 
programs are used on the virtual ports; killing these other programs 
does restore connections.  I have not carefully investigated a total 
power cycle.


As I noted before, the failure occurs without any other programs 
connected to the virtual COM ports, and indeed even when these COM ports 
have not been created.


Wiping the computer and reloading the OS seems a rather drastic cure for 
a small ill, especially when there is no guarantee that it will work.  I 
do have another computer running XP, and have used LPB on it in the 
past.  It's problem is that it is slow enough that when all the programs 
I want to run are on it, there are precious few CPU cycles left.  This 
was why I got the Win 7 machine!


VA2FSQ's solution is possibly one way out.  I will have to consider it 
and other similar options.


Thanks for all the good and very prompt feedback.  BTW, in the time 
between my sending my first question and the present, the computer was 
left running with LPB on it alone, and it crashed, reading IS Q500!


George, W3HBM


On 12/3/2016 11:47 AM, Mike Flowers wrote:

Hi George,

Just some thoughts:

- how is your K3 attached to the PC?  A real RS-232 COM port or a USB/Serial 
converter?

- if by an RS-232 COM port, could you try a different one?

- if by a USB/Serial converter, what kind?  Can you try another one?

- Are you transmitting at all between failures?  If so, RFI may be playing a 
role.  Try just leaving the rig on but no TX.

- if you have a dummy load, try TX into it if the above test indicates RF may 
be the issue.

- How close are your antennas?  Are the rotatable?

- How are the rig, PC, coax shields, etc. bonded in a 'ground' system?   RF can 
induce voltage on cables if various units are not at a common 'ground'.

- Do you have really good quality cable connecting your rig and PC?

- Have you tried any ferrites on the cables?

Just some thoughts.

-- Mike Flowers, K6MKF, NCDXC - "It's about DX!"


On Dec 3, 2016, at 6:33 AM, George Kidder <gkid...@ilstu.edu> wrote:

OK, gang!  I've tried everything I can think of, and am now looking for some 
additional thoughts.

Equipment: K3 (unmodified) with firmware 5.53, computer (2.99 GHz dual core, 4 
GB memory) running Win 7, LP-Bridge (LPB) set for 200 mS delay.  The computer 
is not connected to the internet, and all programs are brought in from another 
computer using a flash drive.

Problem:  At random but long intervals (hours) LP-Bridge crashes, displaying error 13 (type mismatch).  Clearing this window 
causes program to close.  This behavior is seen with no external programs connected to LPB, and with LPB set to any polling rate 
from 200 mS (default) to as much as 1000 mS.  It is seen when LPB2 is used and the baud rate is reduced to 4800.  When the crash 
occurs, the error seems to be in a response from the K3 - for instance, the "Rig Received Text" window shows "IS 
0|00;" while it should show "IS 0600;".  In this case the K3 was set to CW mode.  In LSB mode, the same window 
shows "CW 6+;" where I presume it should have been "CW 60;".  This damaged text shows up in all windows (Rig 
received, K3 Com port, Power SCR-IF Aux CAT port, etc.)

Attempted resolution includes reloading the K3 firmware and reloading LPB from 
the website after clearing out all remnants of the old program.  Nothing helps 
- LPB still crashes when allowed to run for several hours.  Other programs not 
affected.  Computer is on a UPS, so momentary power outage would not be a cause 
(even if there should be one every night!)

Clearly, there is a communication failure between the K3 and LPB, since it 
occurs with nothing else connected.  Is the problem with the K3, LBP or the Win 
7 operating system which sits between them?  And what more can I try to fix it?

Your thoughts will be greatly appreciated.

George, W3HBM


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[Elecraft] LP Bridge crashes with K3

[George Kidder]

OK, gang!  I've tried everything I can think of, and am now looking for 
some additional thoughts.


Equipment: K3 (unmodified) with firmware 5.53, computer (2.99 GHz dual 
core, 4 GB memory) running Win 7, LP-Bridge (LPB) set for 200 mS delay.  
The computer is not connected to the internet, and all programs are 
brought in from another computer using a flash drive.


Problem:  At random but long intervals (hours) LP-Bridge crashes, 
displaying error 13 (type mismatch).  Clearing this window causes 
program to close.  This behavior is seen with no external programs 
connected to LPB, and with LPB set to any polling rate from 200 mS 
(default) to as much as 1000 mS.  It is seen when LPB2 is used and the 
baud rate is reduced to 4800.  When the crash occurs, the error seems to 
be in a response from the K3 - for instance, the "Rig Received Text" 
window shows "IS 0|00;" while it should show "IS 0600;".  In this case 
the K3 was set to CW mode.  In LSB mode, the same window shows "CW 6+;" 
where I presume it should have been "CW 60;".  This damaged text shows 
up in all windows (Rig received, K3 Com port, Power SCR-IF Aux CAT port, 
etc.)


Attempted resolution includes reloading the K3 firmware and reloading 
LPB from the website after clearing out all remnants of the old 
program.  Nothing helps - LPB still crashes when allowed to run for 
several hours.  Other programs not affected.  Computer is on a UPS, so 
momentary power outage would not be a cause (even if there should be one 
every night!)


Clearly, there is a communication failure between the K3 and LPB, since 
it occurs with nothing else connected.  Is the problem with the K3, LBP 
or the Win 7 operating system which sits between them?  And what more 
can I try to fix it?


Your thoughts will be greatly appreciated.

George, W3HBM


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Re: [Elecraft] Interfacing Ke with MFJ929?

[George Kidder]

In CONFIG menu, TUN PWR defaults to NOR, where tuning power follows the 
power knob.  But TUN PWR can be pre-set to any other value, which it 
will produce whenever the "xmit" button is held. (I have mine set for 50 
W since my SWR indicators are manual). You could use 5W or anything 
else.  Is this "automated" enough?


George, W3HBM


On 11/6/2016 6:43 PM, Dave Lankshear wrote:

I wonder if anyone has interfaced a K3 with an MFJ-929, used as a remote
tuner?

  


One of my antennas is a doublet fed with 450 ohm ladder line.  The ideal
place for a tuner is at the base of the ladderline and I intend to
experiment with a variety of baluns to see which work best on which bands.
I have a suitable housing for the auto ATU and balun(s), which may end up
being switched remotely.

  


The auto tuner can be set to an automatic mode whereby feeding a few watts
of RF will generate a tune before adjusting power output of the K3 to the
required level, but I wonder if this can be done in a more automated manner?

  


Any help and guidance would be greatly appreciated.

  


73 Dave G3TJP

  

  


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Re: [Elecraft] Paper Tape CW sender

[George Kidder]

Interesting!  I used to own one of these (the single-hole variety) - it 
never worked too well, but then I was no expert at it.  Don't remember 
where I got rid of it - probably at a hamfest for a song.


I took my extra code exam with a portable version of this machine, run 
by the FCC examiner.  It's a long story which I won't repeat, but it 
involved a tape machine malfunction!  Cranky beasts.


George, W3HBM (age 82)


On 10/30/2016 5:48 PM, Tom Francis wrote:

Oh wow - my Dad had one of those - does that go back a few years.

Donate it to W1AW museum - I don't know who the station engineer is 
anymore
as I left there in the late '80s, but I'm sure they would really 
appreciate the donation.


Tom, W1TEF

On 10/30/2016 9:33 AM, Kenneth Christiansen wrote:

Hi to the group.

My silent key friend's XYL has a paper tape morse code device and we 
would like to donate it to a museum. It is in a nice looking wood 
box. It has one paper tape, a hand crank on the side of the box and 
should be saved as an important piece of history. His XYL and I are 
both 74 years old so it will just be a matter of time before this 
ends up in a land fill if we don't find a home for it.


She sent me two pictures of it so if anyone is interested I can 
E-Mail the pictures. She will donate the piece and I will pay 
shipping if we can find a home for it.


73

Ken Christiansen.  W0CZ
w0cz at i29 dot net.Or I am good in QRZ.COM.



Sent from my iPad
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Re: [Elecraft] Power output per mode?

[George Kidder]

Fred OM,

Don't have the KPA500, so that's moot.

I agree that one problem is the lack of any indication of the power 
which will be produced.  The only way I know of is to rotate the "power" 
knob - THEN the power indication shows, but not otherwise.


Guess nothing is perfect, is it?

George, W3HBM


On 10/16/2016 7:47 PM, Fred Jensen wrote:
Well, technically it is saved per band per KPA500 state, if you have 
one.  I'm pretty sure it isn't also saved per mode.


I've never been at ease with memory functions that simply save the 
last state without leaving a message somewhere on the display what the 
current saved state is.  When the "Power for KPA state" feature came 
out, there were several times when I faulted the KPA on the first dit 
because the power was at 100W.  I know it was pilot error but I began 
to check it just to be sure.


For a remote station with multiple operators in various places on the 
planet, I really do *always* check the power settings before 
transmitting.


73,

Fred K6DGW
- Sparks NV DM09dn

- Northern California Contest Club
- CU in the Cal QSO Party 7-8 Oct 2017
- www.cqp.org

On 10/16/2016 3:38 PM, George Kidder wrote:

I suspect that most of us like to reduce our power output on digital
modes, so the continuous carrier doesn't overheat something.  At present
(as far as I can figure out) the power output setting is saved per band
but not per mode, so that changing from CW to digital on the same band
requires remembering to reduce power manually, and remembering to put it
back when digital modes are no longer being used.

As an addition to the long wish list: How about saving the power output
setting per band AND per mode?  Or is there some technical reason why
this is not possible?

73
George, W3HBM


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[Elecraft] Power output per mode?

[George Kidder]

I suspect that most of us like to reduce our power output on digital 
modes, so the continuous carrier doesn't overheat something.  At present 
(as far as I can figure out) the power output setting is saved per band 
but not per mode, so that changing from CW to digital on the same band 
requires remembering to reduce power manually, and remembering to put it 
back when digital modes are no longer being used.


As an addition to the long wish list: How about saving the power output 
setting per band AND per mode?  Or is there some technical reason why 
this is not possible?


73
George, W3HBM
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Re: [Elecraft] DATA-A tx freq offset with digital modes

[George Kidder]

Eric,

As an old duffer who has done lots of scientific writing over the last 
60 years, I have never found that I could ACCURATELY proofread from a 
computer screen.  For some reason, my eye skips over some really howlers 
which I do catch in the printed copy.  And along with this is the 
growing incidence of spellchecker errors, in which the wrong real word 
is substituted for a misspelled word with another meaning.  (My favorite 
error was the substitution of "wooden" for "woolen" in  a sentence which 
was intended to read "[she] was the type of girl who looks like she 
wears woolen underwear."  I hope the younger generations are better than 
I am, but looking as the printed results does not encourage this belief.


George, W3HBM
PS - I hope this short message is error-free, but don't count on it - I 
didn't print it out.



A very enlightening post, Guy.

Almost every new technology ever invented experiences the same thing. New users 
tend to work hard to make the new technology work just like the old technology 
did. Instead of developing new procedures to fit very different technology, 
they make the new technology fit the old procedures. I worked in the printing 
and publishing industry for many years.

We were still using some hot metal Linotypes that weren't even made anymore, and when we 
bought electronic typesetters, managers and workers tried to make them compatible with 
hot type instead of junking hot type and developing new procedures. It was a long battle. 
Computer use was the same. People would type on the new word processors, then immediately 
print a copy to edit from, then go back to the WP enter the edits and immediately print a 
"clean" copy. One wag early on said the paperless office was about as likely as 
the paperless bathroom.

Thanks for the very lucid description of how the K3 works.

Eric KE6US

On 9/22/2016 1:21 PM, Guy Olinger K2AV wrote:

[In the following text, "both the K3 and the K3S" is represented by "K3/S".
Text applicable to only one or the other will be "K3" or "K3S"]

Hi Graham.

With a warm smile, a soft voice, and friendly demeanor. I have had to go
through this post-analog era "de-analoging" my own radio perceptions, and
have had a fairly painful time of it :>)

The big lesson from my de-analoging was just how much my traditional analog
thinking, ground in by 50 years of analog hamming experience on analog
equipment, was keeping me from moving on. I needed to understand, cope with
and take advantage of very superior digital methods in a new digital era. I
was really pretty clunky. That said, not reporting any genius-level
learning rate on my part to claim superiority...

There is no suppressed carrier in software derived radio (SDR). In the
  K3/S the single sideband envelope is generated directly from firmware. It
begins with data from analog to digital converter chips (ADC) on line in or
mic leads. Firmware converts this to SSB representative data, sent to a
digital to analog chip (DAC) directly outputting SSB at the 15 kHz TX IF.
There is no carrier to null or filter out. There is no opposite sideband to
phase out or filter out. There are DAC and frequency conversion artifacts
which need to be removed by one means or another (as in going through a 2.7
kHz wide 8 MHz crystal filter also used for receive).

CW is not a keyed carrier any more. It is directly generated by the DAC
chip to the 15 kHz TX IF from digital data representing an ideal waveform.
The normal keying "sidebands" of the CW signal are also from that data. The
frequency conversion, and linear amplifier stages following, will add some
additional sidebands based on their degree of linearity, hopefully very
well down.

For frequency display, in CW mode the K3/S will display the single
frequency of the central signal.

For SSB and any mode generated through DATA A, the K3/S will display the
traditional amateur radio SSB frequency, which is what you would get if you
could somehow create SSB output from a DC voltage applied to the K3/S
transmitter line in or mic inputs. Note that some other radio services use
center of bandwidth as the frequency for SSB operation.

Use of audio input for keying should be avoided where possible. Note that
you can generate CW, FSK, and PSK without use of audio input, producing
ideal keying and bandwidth. Signals generated this way are without any
audio input artifacts like 60, 120, 180 Hz hum, audio harmonics from low
level distortion, audio noise or hiss, or miscellaneous unwanted audio from
grounding issues, or feedback from mild RF in the shack, or miscellaneous
audio from other apps on the PC bleeding through PC "soundboards".

The state of digital direct signal generation for CW is so clean that it is
simply poor amateur practice to generate CW from audio tones. There are so
many ways to screw up CW in the audio. The reputation of very clean CW from
K3/S depends on the direct data generation of CW in the K3/S

The key jack input on the back of the K3/S is 

Re: [Elecraft] K3 and Power Poles

[George Kidder]

Completely agree!  Soldering is effective, cheap and reliable if done 
right - as is crimping, bar the cost of the tool.


W3HBM


On 9/13/2016 5:07 PM, Ron D'Eau Claire wrote:

FWIW, rather than invest in crimpers and practice as needed to get great 
crimps, I simply solder the wires into the terminals as recommended by Wayne.

I place the terminals over the bare ends and solder, filling the part you might 
crimp with solder. It's useful to align the terminals correctly so they slide 
right into the PP housing when done. Also, be sure you do not get solder on the 
terminal contacts. Some builders like to hold the wires vertically with a vice 
to prevent soldering from flowing onto the contact area.

I've had no problems over the past 12 years or so using the PP connectors -- 
all but a very few are soldered.

73, Ron AC7AC

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John Pitz
Sent: Tuesday, September 13, 2016 9:49 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 and Power Poles

On the topic of Power Pole connectors,  I have a crimper that if I remember 
correctly I bought from West Mountain Radio.  It looks pretty similar to the 
one sold by Powerwerx.  I have had very little success crimping the #10 zip 
cord sold by Powerwerx.  Am I missing something?  I have used these off and on 
for a few years to crimp smaller gauge wire.
With the 10 wire the crimp looks terrible, and it is very hard to extract the 
pin from the crimper without destroying the pin.  If you do manage to get the 
pin out of the crimpers it is almost impossible to push into the housing.  Is 
there something wrong with Powerwerx's zip cord?  my crimpers?  Is there better 
cable to use, ideally something really flexible?  A lot of my operation is 
portable so this stuff is always getting plugged, unplugged, coiled, uncoiled, 
etc.

KD8CIV


On Tue, 2016-09-13 at 08:11 -0500, Clay Autery wrote:


I find the Power pole connectors perfectly serviceable...  And I am
pretty much a cabling/connector freak.

I like Power Poles because they are serviceable, configurable, and
becoming more common/standard as time passes.

Would I prefer a CPC or other connector?  Perhaps, but the Power Pole
does the job and at a manufacturing price point that makes sense.

If you do your cabling and cable routing correctly, you should never
have a problem.  The connectors are rated to carry enough power to
satisfy the K3s' needs AT FULL POWER.

And there are ways/devices to make PP connections "more secure".

__
Clay Autery, KY5G
MONTAC Enterprises
(318) 518-1389

On 9/13/2016 7:53 AM, Ramon Tristani wrote:

The Power Pole connectors on the back of my K3 provide for only a marginal, 
non-secure connection to the cable coming from the power supply. Has anybody 
out there “invented” or “discovered” a more secure and strong connection than 
the one provided by the Power Poles? It is so easy for the connection to come 
loose that makes me wonder how can they safely conduct the 20 amps needed for 
the radio to operate at full power. I believe in strong and tight connections 
when relatively high current is expected. Anybody out there with suggestions? I 
would appreciate knowing from you. Thank you all.

Ramón E. Tristani Sr., NQ9V
r.trist...@gmail.com 
https://www.flickr.com/photos/nq9v/

https://tristaniministries.wordpress.com/


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Re: [Elecraft] CW Monitor audio lost on Line Out after upgrade of FW release in my K3

[George Kidder]

Ditto.  Essentially the same problem here on upgrading to 5.50. I have 
not been as comprehensive in my analysis as Classe was, but essentially 
the same findings.  What it means is that fldigi (for instance) can no 
longer decode CW keyed into the K3, which it used to do.


But it's nice to know that the problem seems to be a new "feature"!

George, W3HBM


On 9/8/2016 11:40 AM, Classe Bergman wrote:

Hi,
Today I upgraded my K3 with new FW, I was using 5.38/2.86 and I installed
5.50/2.87
I then discovered that the CW Monitor audio was lost on Lin Out. First I
tought  that some settings was messed up but could not find anything. I
then downgraded my K3 to 5.38/2.86 and the CW Monitor audio was back ! I
found that if I change settings from LIN OUT = "Nor"as I normaly use  to
"=Phones", the CW Monitor audio comes back. So something have changed the
function of Line Out audio in the new FW release.
Since all audio levels follows the Front AF vol  when using  "=Phones" this
mess up levels to my soundcard in the PC. My K3 s/n 1464 have the old KIO
board without USB interface

Is this a known bug ( or maybe a feature ..) ?

73 Classe SM3GSK
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[Elecraft] K3 - new manu and config options in 5.50

[George Kidder]

Hi gang,

I recently upgraded the firmware to 5.50, and most of the functionality 
seems to have been preserved.  However, it is clear from scrolling 
through the "menu" and "config" offerings that there are many settings 
which have been added since my owners manual was issued on April 12, 
2010.  Is there an internet source of the main and config "Menu 
Functions" tables?


Thanks,

George, W3HBM



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Re: [Elecraft] Power "per mode and per band"

[George Kidder]

Thanks, Tom.  I had thought of that, but since I use NaP3 to control 
band/mode switching, there is no access (that I know of) to the built-in 
macros which do that job.


73 - George, W3HBM


On 8/29/2016 6:41 PM, tomb18 wrote:

Hi You could set up a macro and use that to change bands, modes and power. 73 
Tom va2fsq.com


Sent from my Samsung Galaxy smartphone.
 Original message From: George Kidder <gkid...@ilstu.edu> Date: 2016-08-29  
6:29 PM  (GMT-05:00) To: 'Elecraft Reflector' <elecraft@mailman.qth.net> Subject: [Elecraft] 
Power "per mode and per band"
I am inquiring if it is possible to have settings saved "per mode and
per band".  The current system seems to be "per band" only.

Reason:  Like many, I operate data modes as well as CW/SSB.  On the
latter two, the duty cycle is 50% or less, and running full power (100W)
seems reasonable.  However, on the data modes, the duty cycle is 100%
during transmit, which bothers me, both since it might strain the
amplifier and because there is generally no need for that power.
However, if I back off the power for data modes, it remains backed off
when I try to use SSB or CW on that band.

It is easy to suggest programming fixes when I know nothing of the
program.  But if this is a reasonably easy one, it would be appreciated.

Or maybe someone has found out how to do this with the present firmware
(5.50)?

George, W3HBM

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[Elecraft] Power "per mode and per band"

[George Kidder]

I am inquiring if it is possible to have settings saved "per mode and 
per band".  The current system seems to be "per band" only.


Reason:  Like many, I operate data modes as well as CW/SSB.  On the 
latter two, the duty cycle is 50% or less, and running full power (100W) 
seems reasonable.  However, on the data modes, the duty cycle is 100% 
during transmit, which bothers me, both since it might strain the 
amplifier and because there is generally no need for that power.  
However, if I back off the power for data modes, it remains backed off 
when I try to use SSB or CW on that band.


It is easy to suggest programming fixes when I know nothing of the 
program.  But if this is a reasonably easy one, it would be appreciated.


Or maybe someone has found out how to do this with the present firmware 
(5.50)?


George, W3HBM

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Re: [Elecraft] k3s radio kit

[George Kidder]

And for heaven's sake, get a good anti-static pad and wrist strap!

George, W3HBM


On 8/5/2016 2:27 PM, Bob Novas wrote:

For me, the TMP connectors were hard, and installing the sub receiver was
hard. The rest was reasonably easy.  Go slow and follow the advice in this
thread.  Maybe someone else has words of wisdom on the TMP connectors.  The
TMP connectors killed my fingers. I wound up using needle nose pliers to
insert them. Also be sure to trim the center wires as instructed.  And,
inventory the cables and use the right length cable for each cable
connection.

Note that the word connector appears in the assembly manual 119 times.
You'll be futzing with a lot of connectors!  (Not THAT many, but a lot.)
Misaligning connectors is a really easy mistake when you're tired. You're
better off if you don't make that mistake.

Bob - W3DK




-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ron
D'Eau Claire
Sent: Friday, August 05, 2016 1:36 PM
To: 'Wayne Michael'; 'Elecraft@mailman.qth.net'
Subject: Re: [Elecraft] k3s radio kit

In addition to Wayne's comments,

1) Do the parts inventory even though your fingers are itching to start

assembly.

That's something many of us skip over and finding and identifying each

part

before you start helps avoid confusion during assembly. There's no

"Argh!"

moment as bad as discovering that you used the wrong screw a few pages

back

and now you don't have it when it is needed. Besides, doing that in some

steps

can damage parts.

2) Be sure to check off each step in the assembly instructions. Check

boxes are

provided. Skipping a step is one of the most common reasons why a builder

has

to "back up" and reassemble a portion of the kit again after leaving

something

out. Checking the boxes helps make a skipped step stand out before you go

too

far.

3) If a step is not clear, feel free to drop me a note (r...@elecraft.com

or

r...@cobi.biz). I wrote the manual and the primary reason I try to keep an

eye

on this reflector is to pick up any issues people might report assembling

their

kits. Of course, during regular M-F business hours you can also contact
k3supp...@elecraft.com. I'm not at the factory, so they are the people to
contact in the unlikely event something is missing.

4) Have fun building. Have fun operating.

73, Ron AC7AC



-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of

Wayne

Michael
Sent: Friday, August 5, 2016 7:05 AM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] k3s radio kit

Any advise for a putting a K3S together?
I just ordered it.


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Re: [Elecraft] K3 Transmitting CW in SSB mode

[George Kidder]

Thanks, Don.  Harder to implement, but safer.

George


On 7/27/2016 2:39 PM, Don Wilhelm wrote:

George,

The K3/K3S does *not* inject an audio tone.
It shifts the transmit carrier by an amount equal to your sidetone pitch.
Lower if you are on LSB and higher if you are on USB.

The effect is the same as adding a tone to a perfectly suppressed 
carrier, but is guaranteed to be clean.


73,
Don W3FPR

On 7/27/2016 2:21 PM, George Kidder wrote:
Another way to look at the use of CW in SSB mode on the K3:  What I 
think the rig does when you hit the key is inject an audio tone at 
the CW offset frequency into the audio chain for the SSB signal.  If 
all is clean and not distorted, the result will be a single RF 
frequency offset from the SSB "carrier", and will be receivable as 
such by a SSB receiver tuned to the SSB carrier frequency.


If the K3/K3S doesn't actually generate an audio tone, it sure 
behaves like it.




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Re: [Elecraft] K3 Transmitting CW in SSB mode

[George Kidder]

Another way to look at the use of CW in SSB mode on the K3:  What I 
think the rig does when you hit the key is inject an audio tone at the 
CW offset frequency into the audio chain for the SSB signal.  If all is 
clean and not distorted, the result will be a single RF frequency offset 
from the SSB "carrier", and will be receivable as such by a SSB receiver 
tuned to the SSB carrier frequency.


If the K3/K3S doesn't actually generate an audio tone, it sure behaves 
like it.


George, W3HBM


On 7/26/2016 12:55 PM, Phil Hystad wrote:

Don (and others who answered):

Thanks.  I was guessing that the answer to the second question (CW mode TX  —> 
SSB RX) was as you said but entirely confident.

So, given what you are saying on sending CW while in SSB mode, the K3 does the 
following things:

1.  Allows CW to be sent in SSB mode (enabled or disabled).
2.  Shifts the actual TX frequency by side-tone monitor frequency per LSB/USB 
direction.

Therefore, given that the RX station is receiving at the same dial VFO 
frequency reading, they will
hear a tone roughly equivalent to the tone determined by my side-tone 
frequency.  Of course,
assuming they are the same LSB or USB as I am.

As someone else said — “why don’t all transceiver vendors do the same and 
support this feature”.

73, phil, K7PEH



On Jul 26, 2016, at 5:30 AM, Don Wilhelm  wrote:

Phil,

With CW+SSB turned on, SSB will be sent at the carrier frequency indicated on 
the VFO.
When CW  is sent, the frequency is shifted by the amount of your sidetone 
pitch, so the receiving station will hear a pitch equal to your sidetone pitch.

Note that for normal CW, the signal frequency is the same as indicated on the 
VFO, i.e. it is different in CW+SSB.

If you are sending in CW mode and the receiving station is listening in SSB - 
and both VFOs are tuned to the same frequency, they will hear nothing because 
their receiver will likely not hear a signal at the carrier frequency - that 
does assume that both stations VFOs are calibrated properly.

73,
Don W3FPR

On 7/25/2016 11:34 PM, Phil Hystad wrote:

I have my K3 enabled to allow the sending of CW in SSB mode.  However, I am not 
sure how this actually works.  Therefore, this question.

If the K3 VFO is dialed into 3850 KHz (for example) and the mode is set to SSB 
and my sidetone monitor of the CW signal is set to 700 Hz (not sure if this 
matters), what will the other station here if I send something in CW while in 
SSB mode on my K3.  In particular:

1.  They are also dialed into the same frequency 3850 KHz, what will they hear: 
a tone of 700 Hz, a tone of some other audio frequency, or no tone at all.  My 
only assumption is that they are in SSB mode and dialed to the same frequency 
as I am.


2.  They (the other station) are dialed into the same frequency of 3850 but 
their mode is CW and not SSB while my mode in sending is still SSB.  Same 
questions, what will they hear?



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Re: [Elecraft] K3 power oddity

[George Kidder]

Thanks Don for the explanation of what is going on with the "ALC" meter.

I have two suggestions relative to using my K3/100.  The first is a 
suggestion I made by email some years ago, with no reply.  When changing 
from "Spkr + Phones" to "Phones" ( that is, spkr off) I need differing 
audio levels due to the different efficiencies of the speakers and 
phones.  So I crank up the gain on when using phones.  So far so good.  
BUT; the monitor level remains constant, and changing that is a 
different process.  I'm sure that for some, having the two audio levels 
independent is a good thing - for me, it wold be nice to link them.  
Could a menu option be constructed which would allow for linking monitor 
and receiver audio?


My second problem is that when running CW or SSB, I like to use full 
power  (100 W).  On digital modes or FM, it seems prudent to limit the 
rig to 50 W.  The power level is currently saved "per band" - cold it be 
saved "per mode" as well?  This would save a lot of "oops" time.


Or maybe these functions are already available and I just haven't found 
them!


George, W3HBM. Bar Harbor, ME


On 7/17/2016 9:19 AM, Don Wilhelm wrote:

Lee (and others)

It is normal for the power control circuits to be reset after a band 
change.  That prevents overshoot if you are driving an amplifier.
Normally the power will come up to the requested power level in a 
couple dot times on CW, or several syllables when operating voice.


If the problem is on voice or data, make sure you are driving the 
audio sufficiently.  If you are not driving the K3 audio hard enough, 
power control will be "flaky".


For Voice: With the compression set to zero, you should produce 5 to 7 
bars on the ALC meter.  After adjusting the mic gain for that 
indication, increase the compression as you choose - normally I would 
suggest compression of less than 10dB.


For RTTY, if you are using FSK D mode, the power control should be 
automatic, but if you are using AFSK A (or other soundcard data 
modes), then do check your audio drive - of course compression should 
be set to zero, but the audio drive should drive the ALC meter to 4 
bars solid with the 5th bar flashing.


Note that the K3 controls power differently than other transceivers.  
Ignore the advice on the internet to show no ALC and adjust the power 
with the audio level.
With the K3 (and K3S, KX3, KX2), the "ALC" meter is a combination "VU" 
meter and ALC meter.  The 1st 4 bars are there to help you adjust the 
audio level.  The onset of ALC is indicated by the 5th bar.  So 4 bars 
solid and 5th bar flickering is the "no ALC" point for the K3.

In data modes, adjust the power with the Power knob, not the audio level.

73,
Don W3FPR

On 7/17/2016 8:38 AM, Leroy Buller wrote:
Operated RTTY NAQP this weekend.   When changing bands, I noticed my 
power
would drop to 40 watts or so.  After several transmissions, it would 
rise

to 100 watts.  I don't think this is normal.   All antennas are matched.
Comments?




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