[Elecraft] Fwd: WSPR & Diversity RX

[Guy Olinger K2AV]

True diversity in digital modes requires TWO decoders running plus a
secondary comparator to somehow decide between the two decoded streams.

If you simply combine two audio streams there can be phase cancellation,
noise on one channel ruining both, and other issues.

In contrast it's simply marvelous what our brains can do when left ear is
listening to main RX and right ear is listening to sub RX locked to main RX
frequency and RF/AF gains and AGC are set to create a "sound stage".

Signals come from a point on the sound stage and noise is spread around.
Signals in a pileup can spread around the stage. And since it has the
normal "spatial spread" that we hear in normal life it's easier to listen
to, less tiring.

These are significant advantages that only apply in part to digital mode
where the specific and nasty programming has actually been done. Check your
third party digital decoding program's user's manual but don't hold your
breath.

Would be great if someone actually took that on.

73, Guy K2AV


On Saturday, October 1, 2016, MaverickNH  wrote:

> Hi Don, I thought that might be the case. Might there be a way to run from
> stereo headphone output to a mixed mono signal and feed the soundcard's
> left
> channel? The WSJT-X/WSPR decoder is pretty good, so I thought any very,
> very
> weak wavering signal that was received deferentially L/R on each antenna
> might combine to be decoded better.
>
> BRET/N4SRN
>
>
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Re: [Elecraft] Updating K3/P3 Firmware/Software after long silence...

[Phil Hystad]

To Don and many others who answered my question on-line and offline.  I have 
passed along
the special note about having to do the TX calibration to my friend (KE7FB) and 
he will be 
doing that.

Thanks for all your expert help.

73, phil, K7PEH



> On Oct 1, 2016, at 3:51 PM, Don Wilhelm  wrote:
> 
> Phil,
> 
> He can update the K3 firmware all in one "fell swoop" after downloading the 
> latest K3 Utility - same for the P3.
> 
> He will have to run the TX Gain Calibration (again using K3 Utility), so he 
> will need a dummy load that is flat up through 6 meters.
> If I recall correctly, the tables that hold the TX Gain data were moved in 
> one of the firmware upgrades, and that is why he needs to do the TX Gain 
> Calibration.
> 
> 73,
> Don W3FPR
> 
> On 10/1/2016 11:50 AM, Phil Hystad wrote:
>> To the K3/P3 utility experts…
>> 
>> A friend of mine, owner of K3/P3, has not updated his K3/P3 firmware, nor 
>> utility programs, in at least 3 years, possibly 4 years.  The loss of his 
>> antenna, a divorce, and a move from one state to another lead to his long 
>> downtime.
>> 
>> Now, he is anxious to get back on the air and fire up the old K3/P3.  He 
>> asked me for instructions, I told him the following:
>> 
>> 1.  Get the latest versions of the utility programs for the K3 and P3 first.
>> 
>> 2.  Only need to update the latest set of software/firmware files since they 
>> are inclusive of all previous changes.
>> 
> 

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[Elecraft] Elecraft CW Net Announcement

[kev...@coho.net]

Good Evening,

Please join us tomorrow on:

14050 kHz at 2200z Sunday (3 PM PDT Sunday)
 7045 kHz at 0100z Monday (6 PM PDT Sunday)

   73,
  Kevin.  KD5ONS

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Re: [Elecraft] Updating K3/P3 Firmware/Software after long silence...

[Nr4c]

You are correct. 

Sent from my iPhone
...nr4c. bill


> On Oct 1, 2016, at 11:50 AM, Phil Hystad  wrote:
> 
> To the K3/P3 utility experts…
> 
> A friend of mine, owner of K3/P3, has not updated his K3/P3 firmware, nor 
> utility programs, in at least 3 years, possibly 4 years.  The loss of his 
> antenna, a divorce, and a move from one state to another lead to his long 
> downtime.
> 
> Now, he is anxious to get back on the air and fire up the old K3/P3.  He 
> asked me for instructions, I told him the following:
> 
> 1.  Get the latest versions of the utility programs for the K3 and P3 first.
> 
> 2.  Only need to update the latest set of software/firmware files since they 
> are inclusive of all previous changes.
> 
> 
> Now, I am pretty sure I am correct on item 2 but not 100 percent confident.  
> Given that he may have not updated for the last 4 years, is there anything 
> special he made need to do.  I don’t think he is interested in joining this 
> group even though I have suggested it a number of times.
> 
> 73, phil, K7PEH
> 
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Re: [Elecraft] WSPR & Diversity RX

[Nr4c]

Don't think it's possible in the K3. External yes but that is different issue. 

Sent from my iPhone
...nr4c. bill


> On Oct 1, 2016, at 11:47 AM, MaverickNH  wrote:
> 
> Hi Don, I thought that might be the case. Might there be a way to run from
> stereo headphone output to a mixed mono signal and feed the soundcard's left
> channel? The WSJT-X/WSPR decoder is pretty good, so I thought any very, very
> weak wavering signal that was received deferentially L/R on each antenna
> might combine to be decoded better.
> 
> BRET/N4SRN
> 
> 
> 
> --
> View this message in context: 
> http://elecraft.365791.n2.nabble.com/WSPR-Diversity-RX-tp7622983p7623005.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] Line Out properties K3

[Nr4c]

Update to BETA 5.54. It fixes the problem. 

Sent from my iPhone
...nr4c. bill


> On Oct 1, 2016, at 7:21 AM, kc0...@bitjanitor.net wrote:
> 
>  Hi folks,
> 
> 
>   I sometimes record audio from my K3; sometimes new DX that I've worked, 
> sometimes short snips of QSO's to share how sigs were at my QTH..
> 
>   After the last update I noticed that Line Out doesn't carry sidetone.  
> Looking in the list archives, this appears to have always been the case-- has 
> it really?  I'm 99% certain I was not using phones or speaker line out for 
> this duity in the past; I would have used Line Out for the fix audio level 
> out.. but, as you can tell, I'm second guessing myself...
> 
>  So, can somebody confirm that I am/not crazy?
> 
> 73's
> 
> Joe KC0VKN
> 
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Re: [Elecraft] Updating K3/P3 Firmware/Software after long silence...

[Don Wilhelm]

Phil,

He can update the K3 firmware all in one "fell swoop" after downloading 
the latest K3 Utility - same for the P3.


He will have to run the TX Gain Calibration (again using K3 Utility), so 
he will need a dummy load that is flat up through 6 meters.
If I recall correctly, the tables that hold the TX Gain data were moved 
in one of the firmware upgrades, and that is why he needs to do the TX 
Gain Calibration.


73,
Don W3FPR

On 10/1/2016 11:50 AM, Phil Hystad wrote:

To the K3/P3 utility experts…

A friend of mine, owner of K3/P3, has not updated his K3/P3 firmware, nor 
utility programs, in at least 3 years, possibly 4 years.  The loss of his 
antenna, a divorce, and a move from one state to another lead to his long 
downtime.

Now, he is anxious to get back on the air and fire up the old K3/P3.  He asked 
me for instructions, I told him the following:

1.  Get the latest versions of the utility programs for the K3 and P3 first.

2.  Only need to update the latest set of software/firmware files since they 
are inclusive of all previous changes.



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Re: [Elecraft] K2 - low power/reception on 80m

[Don Wilhelm]

Phil,

One thing you can easily and quickly check is that the VCO signal has 
not gone out of range.
Set the K2 to 4000kHz and measure the left end of R30 - it should not be 
above 7.5 volts (nearer to 6 volts is better).  Then tune to 3500kHz and 
again measure the left end of R30 - it should not be below 1.5 volts.  
If it is within that range, the VCO is properly locking.


If it is not within that range, do the VCO Alignment as indicated in the 
manual on page 64 (if the manual is older, you will find it on page 55).


73,
Don W3FPR

On 10/1/2016 2:00 PM, Philippe wrote:

On Thu, Sep 29, 2016 at 07:12:58PM -0400, Don Wilhelm wrote:

Phil,

Don't be too quick to draw that conclusion.
Note that everything in the Low Pass Filter will appear to be connected to
ground at DC.  If you want to make a valid DC resistance check, you have to
lift lead 4 of T4 and re-measure.


Thanks Don.
You was right, the 2 relays are fine (tested after I lifted T4 lead 4 as 
suggested).
I checked also L16 and L17. I removed L17 because I wasn't sure it was properly 
stripped, and re-soldered it.
I still have an issue on RX and TX on 80m. :(

I need to go 'deeper'.

73,
Phil.



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Re: [Elecraft] WSPR & Diversity RX

[Edward R Cole]

Just working my way thru the digest copy so had not read this before 
my first reply.


Hmm, take each audio stream from the stero headphone.  You would need 
two soundcards or a four channel card like the Delta44 because you 
need two data streams to produce diversity reception.  So that does 
not solve the issue that WSPR does not provide for dual channel 
input.  You might try running two instances of WSPR's on a computer 
to handle each diversity channel but that still leaves you with two 
displays which you would have to manually inspect for best signal.


MAP65 does this for two JT65 inputs but does not support WSPR.

Solution is for someone to write a dual-Rx version of WSPR for 
diversity reception.  My guess is Joe Taylor is fully engaged in 
other sw projects (K1JT author of WSJT, WSPR, etc.).


73, Ed - KL7UW
---
From: MaverickNH 
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] WSPR & Diversity RX
Message-ID: <1475336856960-7623005.p...@n2.nabble.com>
Content-Type: text/plain; charset=us-ascii

Hi Don, I thought that might be the case. Might there be a way to run from
stereo headphone output to a mixed mono signal and feed the soundcard's left
channel? The WSJT-X/WSPR decoder is pretty good, so I thought any very, very
weak wavering signal that was received deferentially L/R on each antenna
might combine to be decoded better.

BRET/N4SRN



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

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Re: [Elecraft] WSPR & Diversity RX

[Edward R Cole]

WSPR is designed to take only one audio input (one Rx) so it will not 
do diversity receive.
The K3 and K3s only output a single audio stream (main Rx or sub Rx 
when properly set up, but not both).


So what Don say is correct for the stock radio with sub-Rx, but...

Full diversity receive is possible (using dual receive sw:  Linrad or 
MAP65).  But you have to add more equipment to enable this.  I did 
that for dual-Rx on 2m-eme by adding a breakout of the 1st IF for the 
sub-Rx and connecting the 1st IF of both the main and sub Rx to two 
LP-Pan units (working as SDR) who I slaved to one LO so the two 
signals would be phase-locked and the two IQ baseband audio would 
stay in phase.  Those four lines go to a two channel stereo soundcard 
(M-audio Delta44) which produces the two IQ data streams to a 
computer for each receiver in the K3.


But you have to have a SDR sw which accepts dual-RX input to obtain a 
diversity result.  At present only Linrad or MAP65 do that.  WSPR is 
not included as option under MAP65 and I do not think Linrad can 
support it, either (less certain about Linrad).


So there is a diversity solution to provide two signal streams but no 
dual receive vers of WSPR.  I wonder if one might be able to run two 
essense WSPR on one computer with each taking input from a 
receiver?  You still would have to manually compare WSPR output from 
each to determine which has the better signal.  A good computer geek 
might be able to write an interface to both WSPR to compare each and 
outputting the best result.


Here is how I set up my dual-Rx 2m-eme adaptive receiving 
system.  With it I receive 2m in both Vertical polarity and 
Horizontal polarity with MAP65 providing the best signal reception 
(plus providing the actual signal polarity angle):

http://www.kl7uw.com/LINRAD.htm

So not exactly correct that diversity reception of digital modes is 
not possible; it is for JT65 with the addition of the necessary equipment.


73, Ed - KL7UW


-
From: Don Wilhelm 
To: MaverickNH , elecraft@mailman.qth.net
Subject: Re: [Elecraft] WSPR & Diversity RX
Message-ID: <0d1cfa26-19bb-a09b-93dd-e6bf695ff...@embarqmail.com>
Content-Type: text/plain; charset=windows-1252; format=flowed

Bret,

Since the computer soundcard is working only with one channel, diversity
mode will not help - unless you can create an 'add-on' to interpret both
channels and decide which one has better reception.

When using Diversity Mode, you listen with both ears to the left and
right channels and your brain figures out which is the better side to
listen to - one channel from the main RX and the other from the subRX.
With digital modes, the soundcard is listening only to the left channel
- main RX.

Yes, you have antennas that will do diversity for you, but that will
only be useful in voice modes and CW because the human brain will
automatically decipher the best signal from the two channels - you
listen to diversity with one channel in each ear.

73,
Don W3FPR

On 9/30/2016 5:36 PM, MaverickNH wrote:
> I'm wondering about my K3S in Diversity RX on Digital modes, such as WSPR. I
> have a G5RV and a 43ft Vertical, so was thinking I might find better overall
> RX with Diversity enabled. Thoughts on this?
>


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

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Re: [Elecraft] WSPR & Diversity RX

[Brendon Whateley]

Hi.

I don't think you can simply combine the two outputs. Any phase differences
in the signals coming out of the two receivers will result in added
canceling and/or adding of the signals. I can see two ways to go:

   1. Two sound cards and some software that either understands the
   diversity. Or some software that will feed your existing software the
   stronger signal.
   2. Some hardware that measures the signal strength on the two outputs
   and swaps which one is then fed to the computer depending on the signal
   level.

Software that would take both signals would give the most options for
extracting the last dB out of the signals. But an external "strength
selector" would probably be a pretty simple project for people with
soldering skills!

Good luck,
- Brendon
KK6AYI.

On Sat, Oct 1, 2016 at 8:47 AM, MaverickNH  wrote:

> Hi Don, I thought that might be the case. Might there be a way to run from
> stereo headphone output to a mixed mono signal and feed the soundcard's
> left
> channel? The WSJT-X/WSPR decoder is pretty good, so I thought any very,
> very
> weak wavering signal that was received deferentially L/R on each antenna
> might combine to be decoded better.
>
> BRET/N4SRN
>
>
>
> --
> View this message in context: http://elecraft.365791.n2.
> nabble.com/WSPR-Diversity-RX-tp7622983p7623005.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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>
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[Elecraft] Elecraft - K3 - FW 5.5 issue ..

[Nolan Kienitz]

FWIW the BETA 5.54 appears to have resolved an issue some of us were having 
with our K3 (with the KIO3B Interface Option installed) and the K3S with the 
KIO3B as a standard part of the rig.

 

In that … a logging program (Log4OM) when shutting down would drop the audio on 
the K3 and K3S to nil.  A slight touch of the shift or width knob or the XFIL 
key would restore the audio.  I had posted about this issue on this reflector a 
while back with no replies.

 

Reverting back to FW 5.33 or 5.38 would seem to resolve the issue.  FW 5.50 and 
up seemed to introduce the problem.

 

I tested with two different computers and reloaded the logging s/w, replaced 
cables and more all to no avail.

 

Granted a logging program shutting down audio on a rig is small potatoes among 
many of the issues I read and learn about here and everyone’s operations, but 
it still was a valid problem.  I’m glad it appears that the Beta 5.54 has 
possible cured my (and a number of others) hiccup.

 

I know the great folks at Elecraft will get the bugs worked out … sometimes it 
just takes additional steps and time.

 

73,

Nolan Kienitz  KI5IO

SKCC - 9532C

NAQCC - 6230

FISTS - 14948

 

 

Message: 25

Date: Sat, 1 Oct 2016 11:57:54 -0500

From: "Jim McDonald" 

To: "'Elecraft Reflector'" 

Subject: Re: [Elecraft] [K3] FW 5.5 issue??

Message-ID: <008c01d21c04$f4cb0b40$de6121c0$@n7us.net>

Content-Type: text/plain;charset="utf-8"

 

I installed the newest K3 firmware, 5.54, reset DXLab, MMTTY, and the K3 to 
2125 and still get the 850 Hz error when transferring a spot from SpotCollector 
to the radio.

 

I changed all back to low tones, 1225/1445, and get the same error.

 

Tony, K4QE, reported that he had the problem until he reverted back to K3 
firmware release, 5.38, so the firmware must be the problem.

 

I need the newer firmware for my K-Pod, so I'll live with the apparent defect 
RTTY in 5.54 until it's resolved.

 

73, Jim N7US

 

 

 

 

 

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Re: [Elecraft] how to optimize end-fed?

[Ron D'Eau Claire]

Holger: Your English is fine! 

Anything your internal KX3 ATU can match it will match with good efficiency.

Allow me a couple of observations that might help.

Your assumption about low L is correct since, in any well made matching
network, the greatest losses are when high circulating RF currents flow in
inductors and result in resistance losses in the wire. In many modern
miniature inductors using toroids, those currents can actually cause strong
enough magnetic fields to "saturate" the torodial core, causing it to heat
and consume more power. In the extreme, the core may crack. And heating the
toroid may cause it to reach its Curie temperature where its magnetic
properties change dramatically, which changes the inductance of the toroid.
In operation, that may appear a a sudden large change in the SWR after
transmitting for long enough to heat the core. 

"L-networks" such as Elecraft uses are very high efficiency matching
networks. 
Other popular networks you will find used by Hams, such as the "T" network,
may have wider matching capabilities but can produce very high losses as
well.

All passive elements, such as a coil, have some losses. So I avoid any extra
elements that aren't necessary. 

If you are feeding your antenna wire directly - it is connected directly to
the KX3 I'd not use an external coil unless the KX3 cannot find a decent
match (by decent I mean 2:1 or lower). 

If you have a transmission line between the KX3 and the antenna you need to
consider the losses in the transmission line, especially if it is a
low-impedance line such as 50-ohm coaxial. If the transmission line is not
terminated at the antenna in its characteristic impedance (e.g. 50 ohms for
common coax) there will be standing waves on the transmission line. Those
standing waves will produce areas of high currents flowing in the
transmission line and result in losses due to resistance in the wires. In
that case you can reduce the total losses by matching the transmission line
to the antenna impedance at the antenna. The KX3 may be able to match the
antenna, including the transmission line, to the KX3 but that won't reduce
losses in a mis-matched transmission line. 

73, Ron AC7AC

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Holger
Schurig
Sent: Saturday, October 1, 2016 7:39 AM
To: Fred Jensen
Cc: 
Subject: Re: [Elecraft] how to optimize end-fed?

2016-09-30 21:59 GMT+02:00 Fred Jensen :

> This is reminiscent of one of the five volumes in Douglas Adams' 
> trilogy, "The Hitchhikers Guide to the Galaxy."


I understand that either my english is very weird. Or that I can't explain
things good.

But that you and Davidthink that they must make a 42 joke on this is
definitely weird.


The question was: I can query the KX3 ATU for what it settled. I have an end
fed antenna and so I have various variables:

- used tap (1:4, 1:9, 1:16)
- some random length wire
- band

And forget an "optimal wire", I might just have switched from 12m to 10m.
Or back. Depends on what I find, propagation ...   so assume that my wire
is just some random wire, not necessary optimal for the band. And also, in
the context of my question, this is entirely irrelavant. I was never asking
about wire lengths, this is easy to read up. Okay, back to my scenario: I
just switched the new band. I'm not going to let my portable glass fiber
down because of that and change the wire length! Instead I do what a lazy OM
does: I press the TUNE button and the internal magical antenna tuner does
it's job. It's actually so magic, that it will do it's job on all taps. On
the 1:4 tap, on the 1:9 tap. And on the 1:16 tap. Woah! But I can query the
ATU for what inductance and capacitance it used to do the match.
And so my simple question was: would a lower inductance have less losses
inside the ATU?

And please: if you don't know the answer of if you think that there is no
answer, than just stay silent.


73, Holger
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Re: [Elecraft] how to optimize end-fed?

[Lynn W. Taylor, WB6UUT]

I think what the original question is missing is the fact that we are 
talking about the whole system, not just the inductor or the ATU.


The system is the final amplifier, the ATU, the feedline, the UNUN and 
the antenna.


If minimizing the loss in the ATU increases the loss elsewhere, then we 
aren't optimizing the whole system, probably the opposite.


From the subject, it's "how to optimize end-fed?" and without any other 
constraints.


On 2 meters, I've used a lot of J antennas, and found them to be pretty 
awesome performers.  It's an end-fed half-wave, with a quarter wave 
matching section.


Build one out of wire for an HF band, and the same antenna is called a Zep.

Properly trimmed, you don't need a tuner, but they're single-band.

73 -- Lynn

On 10/1/2016 10:03 AM, Logan Zintsmaster wrote:

To add to Lynn's comments, setting the balun tap to the lowest SWR means you
are minimizing the work that the
tuner has to do and as a result probably minimizing it's losses, as well.


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Re: [Elecraft] K2 - low power/reception on 80m

[Don Wilhelm]

Phil,

The next logical step is to do Transmit Signal Tracing as described in 
Appendix E of the manual.  Use 80 meters instead of 40.


When you come to the first point where the RF Voltage is substatially 
less than the Expected value, that is the output of the problem stage.  
You can then examine the schematic to see the components associated with 
that stage and evaluate each individually.


73,
Don W3FPR

On 10/1/2016 2:00 PM, Philippe wrote:

On Thu, Sep 29, 2016 at 07:12:58PM -0400, Don Wilhelm wrote:
I need to go 'deeper'.


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Re: [Elecraft] K2 - low power/reception on 80m

[Philippe]

On Thu, Sep 29, 2016 at 07:12:58PM -0400, Don Wilhelm wrote:
> Phil,
> 
> Don't be too quick to draw that conclusion.
> Note that everything in the Low Pass Filter will appear to be connected to
> ground at DC.  If you want to make a valid DC resistance check, you have to
> lift lead 4 of T4 and re-measure.
> 

Thanks Don.
You was right, the 2 relays are fine (tested after I lifted T4 lead 4 as 
suggested).
I checked also L16 and L17. I removed L17 because I wasn't sure it was properly 
stripped, and re-soldered it.
I still have an issue on RX and TX on 80m. :(

I need to go 'deeper'.

73,
Phil.

-- 
Philippe Givet
F5IYJ / NK2F
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Re: [Elecraft] how to optimize end-fed?

[Walter Underwood]

Capacitors should usually have less loss than inductors. This is not true for 
manual turners with polyvaricons. Those are fairly lossy capacitors.

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

> On Oct 1, 2016, at 10:43 AM, Kevin - K4VD  wrote:
> 
> Hi Holger:
> 
> I just finished reading an article that may answer your question:
> http://www.arrl.org/files/file/Technology/tis/info/pdf/9501046.pdf
> 
> If I'm understanding it correctly, the inductor's Q factor is the issue.
> The Cout capacitance should be set to the highest value possible with the L
> and Cin supporting that for lowest SWR.  I think this means the higher the
> inductor's Q the less losses seen in the matching network. Does this mean
> the higher the inductance (higher inductive reactance) the higher Q and the
> lower loss? That's how it is looking to me.
> 
> I don't know what kind of matching network is used  in the Elecraft ATU.
> I'm hoping someone with a better understanding can verify or correct what
> I've said.
> 
> 73,
> Kevin K4VD
> 
> 
> 
> On Sat, Oct 1, 2016 at 10:39 AM, Holger Schurig 
> wrote:
> 
>> 2016-09-30 21:59 GMT+02:00 Fred Jensen :
>> 
>>> This is reminiscent of one of the five volumes in Douglas Adams' trilogy,
>>> "The Hitchhikers Guide to the Galaxy."
>> 
>> 
>> I understand that either my english is very weird. Or that I can't explain
>> things good.
>> 
>> But that you and Davidthink that they must make a 42 joke on this is
>> definitely weird.
>> 
>> 
>> The question was: I can query the KX3 ATU for what it settled. I have an
>> end fed antenna and so I have various variables:
>> 
>> - used tap (1:4, 1:9, 1:16)
>> - some random length wire
>> - band
>> 
>> And forget an "optimal wire", I might just have switched from 12m to 10m.
>> Or back. Depends on what I find, propagation ...   so assume that my wire
>> is just some random wire, not necessary optimal for the band. And also, in
>> the context of my question, this is entirely irrelavant. I was never asking
>> about wire lengths, this is easy to read up. Okay, back to my scenario: I
>> just switched the new band. I'm not going to let my portable glass fiber
>> down because of that and change the wire length! Instead I do what a lazy
>> OM does: I press the TUNE button and the internal magical antenna tuner
>> does it's job. It's actually so magic, that it will do it's job on all
>> taps. On the 1:4 tap, on the 1:9 tap. And on the 1:16 tap. Woah! But I can
>> query the ATU for what inductance and capacitance it used to do the match.
>> And so my simple question was: would a lower inductance have less losses
>> inside the ATU?
>> 
>> And please: if you don't know the answer of if you think that there is no
>> answer, than just stay silent.
>> 
>> 
>> 73, Holger
>> __
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Re: [Elecraft] how to optimize end-fed?

[Kevin - K4VD]

Hi Holger:

I just finished reading an article that may answer your question:
http://www.arrl.org/files/file/Technology/tis/info/pdf/9501046.pdf

If I'm understanding it correctly, the inductor's Q factor is the issue.
The Cout capacitance should be set to the highest value possible with the L
and Cin supporting that for lowest SWR.  I think this means the higher the
inductor's Q the less losses seen in the matching network. Does this mean
the higher the inductance (higher inductive reactance) the higher Q and the
lower loss? That's how it is looking to me.

I don't know what kind of matching network is used  in the Elecraft ATU.
I'm hoping someone with a better understanding can verify or correct what
I've said.

73,
Kevin K4VD



On Sat, Oct 1, 2016 at 10:39 AM, Holger Schurig 
wrote:

> 2016-09-30 21:59 GMT+02:00 Fred Jensen :
>
> > This is reminiscent of one of the five volumes in Douglas Adams' trilogy,
> > "The Hitchhikers Guide to the Galaxy."
>
>
> I understand that either my english is very weird. Or that I can't explain
> things good.
>
> But that you and Davidthink that they must make a 42 joke on this is
> definitely weird.
>
>
> The question was: I can query the KX3 ATU for what it settled. I have an
> end fed antenna and so I have various variables:
>
> - used tap (1:4, 1:9, 1:16)
> - some random length wire
> - band
>
> And forget an "optimal wire", I might just have switched from 12m to 10m.
> Or back. Depends on what I find, propagation ...   so assume that my wire
> is just some random wire, not necessary optimal for the band. And also, in
> the context of my question, this is entirely irrelavant. I was never asking
> about wire lengths, this is easy to read up. Okay, back to my scenario: I
> just switched the new band. I'm not going to let my portable glass fiber
> down because of that and change the wire length! Instead I do what a lazy
> OM does: I press the TUNE button and the internal magical antenna tuner
> does it's job. It's actually so magic, that it will do it's job on all
> taps. On the 1:4 tap, on the 1:9 tap. And on the 1:16 tap. Woah! But I can
> query the ATU for what inductance and capacitance it used to do the match.
> And so my simple question was: would a lower inductance have less losses
> inside the ATU?
>
> And please: if you don't know the answer of if you think that there is no
> answer, than just stay silent.
>
>
> 73, Holger
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Re: [Elecraft] how to optimize end-fed?

[Logan Zintsmaster]

I just finished typing up the pretty much the same answer.  Should have
gotten up earlier.

To add to Lynn's comments, setting the balun tap to the lowest SWR means you
are minimizing the work that the
tuner has to do and as a result probably minimizing it's losses, as well.

So to summarize...

1.  Bypass the tuner and select the balun tap that gives you the lowest SWR.

2.  Activate the tuner and enjoy lots of QSOs.

Logan



-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Lynn
W. Taylor, WB6UUT
Sent: Saturday, October 01, 2016 9:27 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] how to optimize end-fed?

In my opinion, what you want is the lowest SWR on the feed line between the
Balun and the tuner.

The higher the mismatch, the higher the feedline loss.

Let's say you're operating on 14.300 MHz, and your wire is roughly 9.85
meters (32' 4") long.

If I did the math right, that's pretty much exactly 1/2 wave, and the
impedance at the feedpoint (the end) is near infinity.

Your 16:1 tap might be good enough to bring that into the ATU range.  
The SWR would likely be high.

Make the wire a bit longer (to get away from the exact 1/2 wave) and the
impedance comes down.

At some point, you'll get a better match (lower SWR) on the 4:1 tap than the
16:1 tap.

For some wire lengths, the 1:1 tap will give the lowest SWR between the
tuner and the wire.

I'll be honest and say that I don't know how the inductance in the tuner is
related to SWR.

If you trim the wire so that the impedance is 800 ohms (16 times 50) and use
the 16:1 tap, the SWR between the UNUN and the Tuner should be 1:1, but
we're no longer talking about "random" wires.

I'm sure those who invoked The Hitchhiker's Guide to the Galaxy were trying
to point out that, without getting into a lot of specifics, it's hard to
answer.  That's why I picked 14.300 MHz -- to make the question far more
exact.  Humor doesn't always translate, however.

Stay on 14.300 and make the wire three times longer, and the discussion
stays the same -- instead of the wire being 1/2 wave long, it's 1 1/2 waves.

Move to 7.150 and double the length of the wire, and the discussion stays
the same, only the lengths change.

This page  talks about "random" 
wires, and the lengths that do fall near an odd multiple of 1/2 wave.  
Staying away from these lengths makes the tuner's job easier.

I'm also ignoring (on purpose) how well the antenna radiates.  It seems to
me that if the power doesn't get into the antenna, it doesn't much matter.

I'm sure we'll now hear suggestions from those who think another type of
antenna is better, but your original question is the same with a miscut
dipole as it is with a high-impedance end-fed wire.

73 -- Lynn


On 10/1/2016 7:26 AM, Holger Schurig wrote:
> My question was really: is it desirable to always aim for the lowest 
> inductance of an ATU tuning.  AFAIK this question is totally 
> independent from the wire length. If anything, I'll optimize the wire 
> length to make this happen ... or I won't care if my thesis is all bogus.

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---
This email has been checked for viruses by Avast antivirus software.
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Re: [Elecraft] Updating K3/P3 Firmware/Software after long silence...

[Tom Crayner]

A re-calibration is required on the transmitter for one of the firmware
releases.

Tom, w2yf

On Oct 1, 2016 11:52 AM, "Phil Hystad"  wrote:

> To the K3/P3 utility experts…
>
> A friend of mine, owner of K3/P3, has not updated his K3/P3 firmware, nor
> utility programs, in at least 3 years, possibly 4 years.  The loss of his
> antenna, a divorce, and a move from one state to another lead to his long
> downtime.
>
> Now, he is anxious to get back on the air and fire up the old K3/P3.  He
> asked me for instructions, I told him the following:
>
> 1.  Get the latest versions of the utility programs for the K3 and P3
> first.
>
> 2.  Only need to update the latest set of software/firmware files since
> they are inclusive of all previous changes.
>
>
> Now, I am pretty sure I am correct on item 2 but not 100 percent
> confident.  Given that he may have not updated for the last 4 years, is
> there anything special he made need to do.  I don’t think he is interested
> in joining this group even though I have suggested it a number of times.
>
> 73, phil, K7PEH
>
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Re: [Elecraft] [K3] FW 5.5 issue??

[Jim McDonald]

I installed the newest K3 firmware, 5.54, reset DXLab, MMTTY, and the K3 to 
2125 and still get the 850 Hz error when transferring a spot from SpotCollector 
to the radio.

I changed all back to low tones, 1225/1445, and get the same error.

Tony, K4QE, reported that he had the problem until he reverted back to K3 
firmware release, 5.38, so the firmware must be the problem.

I need the newer firmware for my K-Pod, so I'll live with the apparent defect 
RTTY in 5.54 until it's resolved.

73, Jim N7US


-Original Message-

Got it.  I installed the newest Beta, and it didn't fix the 850 Hz shift 
problem, so I need to experiment some more.

Jim N7US
Sent from Outlook on my iPad

_

Jim,
You are remembering it incorrectly.  The 1, 2, 5, and 10 buttons only turn on 
SPLIT.
73, Tony K4QE
On Sat, Oct 1, 2016 at 9:06 AM, Jim McDonald  wrote:
Joe,

-

The pitch in the K3 is still set to 1275 for my 1275/1445 low tones, and WW 
still has the Mark Offset of -1275 and an Optimal Offset of 1360.

I'm referring to the buttons 1, 2, 5, and 10 above the frequency in the VFO B 
panel of Commander.  They do still turn on split in the radio and offset the 
VFO B frequency correctly.  I thought they were also supposed to turn on my 
subreceiver and check the Dual receive box in the VFO A panel.  Maybe I am not 
remembering that correctly.

73, Jim N7US


-Original Message-


> In DXLab, when I click on RTTY DX spot in SpotCollector the K3 changes 
> the frequency in the K3 but it's 850 Hz higher than the frequency that 
> DXLab sends to the radio. I'm using K3 FSK D with
> 1275/1445 tones, NOT AFSK.

An 850 Hz offset *sounds like* either your K3 or WinWarbler has been reset to 
2125/2295 Hz.  *CHECK BOTH* "Pitch" in the K3 and "Mark Offset"/"Optimal 
Offset" in the FSK panel of WinWarbler's Configuration dialog.

> I don't know if my other problem is attributable to the firmware 
> either. DXLab's rig control module, Commander, has a nice feature 
> (activated by clicking on a button in the VFO B panel) that will 
> switch the radio to split and turn on the subreceiver (called "dual 
> receive" in Commander). It used to do both of those but now only turns 
> on split but not the subreceiver.

I've used DXLab Suite (Commander) for years with the K3 and do not know what 
button in the VFO B panel to which you refer.  There are
*two* check boxes in the VFO A panel - one turns split on/off (equivalent to 
holding A -> B on the K3 front panel) and the other turns the Sub RX on/Off 
(equivalent to tapping Sub on the K3 front panel).

I'm using FW 5.52 at present and all radio control features of DXLab Suite work 
just the same as they have in prior versions of the K3 firmware.

73,

... Joe, W4TV


On 10/1/2016 12:33 AM, Jim McDonald wrote:
> I installed K3 FW 5.50 to use my K-Pod, which I like very much.  I 
> have a couple of weird problems using DXLab now that I can't explain 
> and wonder if the new FW might be related.
>
>
>
> In DXLab, when I click on RTTY DX spot in SpotCollector the K3 changes 
> the frequency in the K3 but it's 850 Hz higher than the frequency that 
> DXLab sends to the radio.  I'm using K3 FSK D with 1275/1445 tones, 
> NOT
AFSK.
>
>
>
> I don't know if my other problem is attributable to the firmware either.
> DXLab's rig control module, Commander, has a nice feature (activated 
> by clicking on a button in the VFO B panel) that will switch the radio 
> to split and turn on the subreceiver (called "dual receive" in 
> Commander).  It used to do both of those but now only turns on split 
> but
not the subreceiver.
>
>
>
> I'd very much appreciate someone also using FW 5.50 and DXLab would 
> check to see if my experience is unique to me or not.
>
>
>
> Thanks.
>
>
>
> 73, Jim N7US

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Re: [Elecraft] Lp.pan & k3s

[MaverickNH]

Well, I uninstalled the U7 and NaP3 drivers/software, installed a new U7 and
re-installed and configured U7 and NaP3 drivers and software. But still no
signal. CAT control works, but nothing but background noise on NaP3.

Is there a way to test the LP Pan 2 function otherwise? May I should try
another SDR app?

Bret/N4SRN



--
View this message in context: 
http://elecraft.365791.n2.nabble.com/Lp-pan-k3s-tp7622817p7623010.html
Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] how to optimize end-fed?

[Lynn W. Taylor, WB6UUT]

In my opinion, what you want is the lowest SWR on the feed line between 
the Balun and the tuner.


The higher the mismatch, the higher the feedline loss.

Let's say you're operating on 14.300 MHz, and your wire is roughly 9.85 
meters (32' 4") long.


If I did the math right, that's pretty much exactly 1/2 wave, and the 
impedance at the feedpoint (the end) is near infinity.


Your 16:1 tap might be good enough to bring that into the ATU range.  
The SWR would likely be high.


Make the wire a bit longer (to get away from the exact 1/2 wave) and the 
impedance comes down.


At some point, you'll get a better match (lower SWR) on the 4:1 tap than 
the 16:1 tap.


For some wire lengths, the 1:1 tap will give the lowest SWR between the 
tuner and the wire.


I'll be honest and say that I don't know how the inductance in the tuner 
is related to SWR.


If you trim the wire so that the impedance is 800 ohms (16 times 50) and 
use the 16:1 tap, the SWR between the UNUN and the Tuner should be 1:1, 
but we're no longer talking about "random" wires.


I'm sure those who invoked The Hitchhiker's Guide to the Galaxy were 
trying to point out that, without getting into a lot of specifics, it's 
hard to answer.  That's why I picked 14.300 MHz -- to make the question 
far more exact.  Humor doesn't always translate, however.


Stay on 14.300 and make the wire three times longer, and the discussion 
stays the same -- instead of the wire being 1/2 wave long, it's 1 1/2 waves.


Move to 7.150 and double the length of the wire, and the discussion 
stays the same, only the lengths change.


This page  talks about "random" 
wires, and the lengths that do fall near an odd multiple of 1/2 wave.  
Staying away from these lengths makes the tuner's job easier.


I'm also ignoring (on purpose) how well the antenna radiates.  It seems 
to me that if the power doesn't get into the antenna, it doesn't much 
matter.


I'm sure we'll now hear suggestions from those who think another type of 
antenna is better, but your original question is the same with a miscut 
dipole as it is with a high-impedance end-fed wire.


73 -- Lynn


On 10/1/2016 7:26 AM, Holger Schurig wrote:

My question was really: is it desirable to always aim for the lowest
inductance of an ATU tuning.  AFAIK this question is totally independent
from the wire length. If anything, I'll optimize the wire length to make
this happen ... or I won't care if my thesis is all bogus.


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Re: [Elecraft] Charging IMEDION2400 mAh batteries?

[Rick Robinson]

I have used these same batteries since my purchase of the kx3 several years
ago. They work great and have a fantastic shelf life. Same charger also.
Slow and steady is good.

On Saturday, October 1, 2016, David F. Reed  wrote:

> I have these MEDION2400 mAh batteries that I am using in my KX3; I have 2
> set of them so I can be charging one set while operating with the other.
>
> My question is, using my Powerex programmable charger, what settings
> should I use for current and time?
>
> Thanks in advance & 72 de Dave, W5SV
>
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-- 
Rick
Genesis 1-29
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Re: [Elecraft] [K3] FW 5.5 issue??

[Jim McDonald]

Got it.  I installed the newest Beta, and it didn't fix the 850 Hz shift 
problem, so I need to experiment some more.

Jim N7US
Sent from Outlook on my iPad

_
From: Anthony Scandurra 
Sent: Saturday, October 1, 2016 8:25 AM
Subject: Re: [Elecraft] [K3] FW 5.5 issue??
To: Jim McDonald 
Cc: Elecraft Reflector , Joe Subich, W4TV 



Jim,
You are remembering it incorrectly.  The 1, 2, 5, and 10 buttons only turn on 
SPLIT.
73, Tony K4QE
On Sat, Oct 1, 2016 at 9:06 AM, Jim McDonald  wrote:
Joe,

The pitch in the K3 is still set to 1275 for my 1275/1445 low tones, and WW
still has the Mark Offset of -1275 and an Optimal Offset of 1360.

I'm referring to the buttons 1, 2, 5, and 10 above the frequency in the VFO
B panel of Commander.  They do still turn on split in the radio and offset
the VFO B frequency correctly.  I thought they were also supposed to turn on
my subreceiver and check the Dual receive box in the VFO A panel.  Maybe I
am not remembering that correctly.

73, Jim N7US


-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe
Subich, W4TV
Sent: October 01, 2016 07:24
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] FW 5.5 issue??


> In DXLab, when I click on RTTY DX spot in SpotCollector the K3 changes
> the frequency in the K3 but it's 850 Hz higher than the frequency that
> DXLab sends to the radio. I'm using K3 FSK D with
> 1275/1445 tones, NOT AFSK.

An 850 Hz offset *sounds like* either your K3 or WinWarbler has been reset
to 2125/2295 Hz.  *CHECK BOTH* "Pitch" in the K3 and "Mark Offset"/"Optimal
Offset" in the FSK panel of WinWarbler's Configuration dialog.

> I don't know if my other problem is attributable to the firmware
> either. DXLab's rig control module, Commander, has a nice feature
> (activated by clicking on a button in the VFO B panel) that will
> switch the radio to split and turn on the subreceiver (called "dual
> receive" in Commander). It used to do both of those but now only turns
> on split but not the subreceiver.

I've used DXLab Suite (Commander) for years with the K3 and do not know what
button in the VFO B panel to which you refer.  There are
*two* check boxes in the VFO A panel - one turns split on/off (equivalent to
holding A -> B on the K3 front panel) and the other turns the Sub RX on/Off
(equivalent to tapping Sub on the K3 front panel).

I'm using FW 5.52 at present and all radio control features of DXLab Suite
work just the same as they have in prior versions of the K3 firmware.

73,

    ... Joe, W4TV


On 10/1/2016 12:33 AM, Jim McDonald wrote:
> I installed K3 FW 5.50 to use my K-Pod, which I like very much.  I
> have a couple of weird problems using DXLab now that I can't explain
> and wonder if the new FW might be related.
>
>
>
> In DXLab, when I click on RTTY DX spot in SpotCollector the K3 changes
> the frequency in the K3 but it's 850 Hz higher than the frequency that
> DXLab sends to the radio.  I'm using K3 FSK D with 1275/1445 tones, NOT
AFSK.
>
>
>
> I don't know if my other problem is attributable to the firmware either.
> DXLab's rig control module, Commander, has a nice feature (activated
> by clicking on a button in the VFO B panel) that will switch the radio
> to split and turn on the subreceiver (called "dual receive" in
> Commander).  It used to do both of those but now only turns on split but
not the subreceiver.
>
>
>
> I'd very much appreciate someone also using FW 5.50 and DXLab would
> check to see if my experience is unique to me or not.
>
>
>
> Thanks.
>
>
>
> 73, Jim N7US

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[Elecraft] Updating K3/P3 Firmware/Software after long silence...

[Phil Hystad]

To the K3/P3 utility experts…

A friend of mine, owner of K3/P3, has not updated his K3/P3 firmware, nor 
utility programs, in at least 3 years, possibly 4 years.  The loss of his 
antenna, a divorce, and a move from one state to another lead to his long 
downtime.

Now, he is anxious to get back on the air and fire up the old K3/P3.  He asked 
me for instructions, I told him the following:

1.  Get the latest versions of the utility programs for the K3 and P3 first.

2.  Only need to update the latest set of software/firmware files since they 
are inclusive of all previous changes.


Now, I am pretty sure I am correct on item 2 but not 100 percent confident.  
Given that he may have not updated for the last 4 years, is there anything 
special he made need to do.  I don’t think he is interested in joining this 
group even though I have suggested it a number of times.

73, phil, K7PEH

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Re: [Elecraft] WSPR & Diversity RX

[MaverickNH]

Hi Don, I thought that might be the case. Might there be a way to run from
stereo headphone output to a mixed mono signal and feed the soundcard's left
channel? The WSJT-X/WSPR decoder is pretty good, so I thought any very, very
weak wavering signal that was received deferentially L/R on each antenna
might combine to be decoded better.

BRET/N4SRN



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Re: [Elecraft] how to optimize end-fed?

[Heinz Baertschi]

Holger, 

Your question was indeed crystal clear, so I am sorry that you had to make
this experience.
Don't worry and have fun!

BTW, I suspect that the tuning algorithm used by Wayne for all the AT of
Elecraft does start his try with the minimum inductance (unknown from
competitive reasons, hi)?

73, Heinz HB9BCB




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Re: [Elecraft] how to optimize end-fed?

[Heinz Baertschi]

Holger Schurig-2 wrote
> I have an end-fed antenna with some random wire. The UNUN at one end of it
> has three sockets to plug the random wire in: 1:4, 1:9 and 1:16.
> 
> My KX3 has the built-in ATU.
> I now want to find out on which band I best use which one of the sockets.
> 
> Am I right to assume that the ATU settings with the lowest L is always the
> best?  So when I have (for the three sockets), these values,
> 
> L: 0.12 mH,  C: 203.0 pF on transmitter side
> L: 0.0 mH,  C: 246.0 pF on transmitter side
> L: 0.0 mH,  C: 256.0 pF on antenna side   (but lowest SWR 1.2-1)
> 
> ... that the middle socket is the best?

Your question was indeed crystal clear, so I am sorry that you had to make
this experience.
Don't worry and have fun!

BTW, I suspect that the tuning algorithm used by Wayne for all the AT of
Elecraft does start his try with the minimum inductance (unknown from
competitive reasons, hi)?





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Re: [Elecraft] how to optimize end-fed?

[Holger Schurig]

2016-09-30 21:59 GMT+02:00 Fred Jensen :

> This is reminiscent of one of the five volumes in Douglas Adams' trilogy,
> "The Hitchhikers Guide to the Galaxy."


I understand that either my english is very weird. Or that I can't explain
things good.

But that you and Davidthink that they must make a 42 joke on this is
definitely weird.


The question was: I can query the KX3 ATU for what it settled. I have an
end fed antenna and so I have various variables:

- used tap (1:4, 1:9, 1:16)
- some random length wire
- band

And forget an "optimal wire", I might just have switched from 12m to 10m.
Or back. Depends on what I find, propagation ...   so assume that my wire
is just some random wire, not necessary optimal for the band. And also, in
the context of my question, this is entirely irrelavant. I was never asking
about wire lengths, this is easy to read up. Okay, back to my scenario: I
just switched the new band. I'm not going to let my portable glass fiber
down because of that and change the wire length! Instead I do what a lazy
OM does: I press the TUNE button and the internal magical antenna tuner
does it's job. It's actually so magic, that it will do it's job on all
taps. On the 1:4 tap, on the 1:9 tap. And on the 1:16 tap. Woah! But I can
query the ATU for what inductance and capacitance it used to do the match.
And so my simple question was: would a lower inductance have less losses
inside the ATU?

And please: if you don't know the answer of if you think that there is no
answer, than just stay silent.


73, Holger
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Re: [Elecraft] how to optimize end-fed?

[Holger Schurig]

>
> You will have to get more specific about the wire lengths and the band(s)
> of operation for specific answers


Nope. I don't have.

My question was really: is it desirable to always aim for the lowest
inductance of an ATU tuning.  AFAIK this question is totally independent
from the wire length. If anything, I'll optimize the wire length to make
this happen ... or I won't care if my thesis is all bogus.
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[Elecraft] K2 - 096 project

[Niel Skousen]

Thanks to all,  I did get 'gifted' a K2 'Rework Eliminator', and am continuing 
with my K2 rebuild project.   Back in the day, I'd planned to add an 
FT-100/FT-900 knob, but never pick one up for it.   Anyone have either knob 
available ?Please holler off list

Thanks && 73

Niel
WA7SSA
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Re: [Elecraft] [K3] FW 5.5 issue??

[Anthony Scandurra]

Jim,

You are remembering it incorrectly.  The 1, 2, 5, and 10 buttons only turn
on SPLIT.

73, Tony K4QE

On Sat, Oct 1, 2016 at 9:06 AM, Jim McDonald  wrote:

> Joe,
>
> The pitch in the K3 is still set to 1275 for my 1275/1445 low tones, and WW
> still has the Mark Offset of -1275 and an Optimal Offset of 1360.
>
> I'm referring to the buttons 1, 2, 5, and 10 above the frequency in the VFO
> B panel of Commander.  They do still turn on split in the radio and offset
> the VFO B frequency correctly.  I thought they were also supposed to turn
> on
> my subreceiver and check the Dual receive box in the VFO A panel.  Maybe I
> am not remembering that correctly.
>
> 73, Jim N7US
>
>
> -Original Message-
> From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe
> Subich, W4TV
> Sent: October 01, 2016 07:24
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] [K3] FW 5.5 issue??
>
>
> > In DXLab, when I click on RTTY DX spot in SpotCollector the K3 changes
> > the frequency in the K3 but it's 850 Hz higher than the frequency that
> > DXLab sends to the radio. I'm using K3 FSK D with
> > 1275/1445 tones, NOT AFSK.
>
> An 850 Hz offset *sounds like* either your K3 or WinWarbler has been reset
> to 2125/2295 Hz.  *CHECK BOTH* "Pitch" in the K3 and "Mark Offset"/"Optimal
> Offset" in the FSK panel of WinWarbler's Configuration dialog.
>
> > I don't know if my other problem is attributable to the firmware
> > either. DXLab's rig control module, Commander, has a nice feature
> > (activated by clicking on a button in the VFO B panel) that will
> > switch the radio to split and turn on the subreceiver (called "dual
> > receive" in Commander). It used to do both of those but now only turns
> > on split but not the subreceiver.
>
> I've used DXLab Suite (Commander) for years with the K3 and do not know
> what
> button in the VFO B panel to which you refer.  There are
> *two* check boxes in the VFO A panel - one turns split on/off (equivalent
> to
> holding A -> B on the K3 front panel) and the other turns the Sub RX on/Off
> (equivalent to tapping Sub on the K3 front panel).
>
> I'm using FW 5.52 at present and all radio control features of DXLab Suite
> work just the same as they have in prior versions of the K3 firmware.
>
> 73,
>
> ... Joe, W4TV
>
>
> On 10/1/2016 12:33 AM, Jim McDonald wrote:
> > I installed K3 FW 5.50 to use my K-Pod, which I like very much.  I
> > have a couple of weird problems using DXLab now that I can't explain
> > and wonder if the new FW might be related.
> >
> >
> >
> > In DXLab, when I click on RTTY DX spot in SpotCollector the K3 changes
> > the frequency in the K3 but it's 850 Hz higher than the frequency that
> > DXLab sends to the radio.  I'm using K3 FSK D with 1275/1445 tones, NOT
> AFSK.
> >
> >
> >
> > I don't know if my other problem is attributable to the firmware either.
> > DXLab's rig control module, Commander, has a nice feature (activated
> > by clicking on a button in the VFO B panel) that will switch the radio
> > to split and turn on the subreceiver (called "dual receive" in
> > Commander).  It used to do both of those but now only turns on split but
> not the subreceiver.
> >
> >
> >
> > I'd very much appreciate someone also using FW 5.50 and DXLab would
> > check to see if my experience is unique to me or not.
> >
> >
> >
> > Thanks.
> >
> >
> >
> > 73, Jim N7US
>
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Re: [Elecraft] Line Out properties K3

[Richard Ferch]

Hi Joe,

No, you're not crazy. The Monitor output used to be sent to Line Out, but
some time between firmware versions 5.38 and 5.50 the monitor output to
Line Out stopped working. It has been restored in beta versions 5.51 and
newer, i.e. if you download the latest beta version it should be working
again, albeit at a non-adjustable level.

73,
Rich VE3KI

KC0VKN wrote:

   After the last update I noticed that Line Out doesn't carry
sidetone.  Looking in \
the list archives, this appears to have always been the case-- has it
really?  I'm \
99% certain I was not using phones or speaker line out for this duity
in the past; I \
would have used Line Out for the fix audio level out.. but, as you can
tell, I'm \
second guessing myself...

  So, can somebody confirm that I am/not crazy?
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Re: [Elecraft] [K3] FW 5.5 issue??

[Jim McDonald]

Joe,

The pitch in the K3 is still set to 1275 for my 1275/1445 low tones, and WW
still has the Mark Offset of -1275 and an Optimal Offset of 1360.

I'm referring to the buttons 1, 2, 5, and 10 above the frequency in the VFO
B panel of Commander.  They do still turn on split in the radio and offset
the VFO B frequency correctly.  I thought they were also supposed to turn on
my subreceiver and check the Dual receive box in the VFO A panel.  Maybe I
am not remembering that correctly.

73, Jim N7US


-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe
Subich, W4TV
Sent: October 01, 2016 07:24
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] FW 5.5 issue??


> In DXLab, when I click on RTTY DX spot in SpotCollector the K3 changes 
> the frequency in the K3 but it's 850 Hz higher than the frequency that 
> DXLab sends to the radio. I'm using K3 FSK D with
> 1275/1445 tones, NOT AFSK.

An 850 Hz offset *sounds like* either your K3 or WinWarbler has been reset
to 2125/2295 Hz.  *CHECK BOTH* "Pitch" in the K3 and "Mark Offset"/"Optimal
Offset" in the FSK panel of WinWarbler's Configuration dialog.

> I don't know if my other problem is attributable to the firmware 
> either. DXLab's rig control module, Commander, has a nice feature 
> (activated by clicking on a button in the VFO B panel) that will 
> switch the radio to split and turn on the subreceiver (called "dual 
> receive" in Commander). It used to do both of those but now only turns 
> on split but not the subreceiver.

I've used DXLab Suite (Commander) for years with the K3 and do not know what
button in the VFO B panel to which you refer.  There are
*two* check boxes in the VFO A panel - one turns split on/off (equivalent to
holding A -> B on the K3 front panel) and the other turns the Sub RX on/Off
(equivalent to tapping Sub on the K3 front panel).

I'm using FW 5.52 at present and all radio control features of DXLab Suite
work just the same as they have in prior versions of the K3 firmware.

73,

... Joe, W4TV


On 10/1/2016 12:33 AM, Jim McDonald wrote:
> I installed K3 FW 5.50 to use my K-Pod, which I like very much.  I 
> have a couple of weird problems using DXLab now that I can't explain 
> and wonder if the new FW might be related.
>
>
>
> In DXLab, when I click on RTTY DX spot in SpotCollector the K3 changes 
> the frequency in the K3 but it's 850 Hz higher than the frequency that 
> DXLab sends to the radio.  I'm using K3 FSK D with 1275/1445 tones, NOT
AFSK.
>
>
>
> I don't know if my other problem is attributable to the firmware either.
> DXLab's rig control module, Commander, has a nice feature (activated 
> by clicking on a button in the VFO B panel) that will switch the radio 
> to split and turn on the subreceiver (called "dual receive" in 
> Commander).  It used to do both of those but now only turns on split but
not the subreceiver.
>
>
>
> I'd very much appreciate someone also using FW 5.50 and DXLab would 
> check to see if my experience is unique to me or not.
>
>
>
> Thanks.
>
>
>
> 73, Jim N7US

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Re: [Elecraft] [K3] FW 5.5 issue??

[Anthony Scandurra]

Jim,

I had the same problems.  Switched back to 5.38 and the problems went away.

I have not tried 5.52 to see if the problems were fixed.

73, Tony K4QE

On Sat, Oct 1, 2016 at 12:33 AM, Jim McDonald  wrote:

> I installed K3 FW 5.50 to use my K-Pod, which I like very much.  I have a
> couple of weird problems using DXLab now that I can't explain and wonder if
> the new FW might be related.
>
>
>
> In DXLab, when I click on RTTY DX spot in SpotCollector the K3 changes the
> frequency in the K3 but it's 850 Hz higher than the frequency that DXLab
> sends to the radio.  I'm using K3 FSK D with 1275/1445 tones, NOT AFSK.
>
>
>
> I don't know if my other problem is attributable to the firmware either.
> DXLab's rig control module, Commander, has a nice feature (activated by
> clicking on a button in the VFO B panel) that will switch the radio to
> split
> and turn on the subreceiver (called "dual receive" in Commander).  It used
> to do both of those but now only turns on split but not the subreceiver.
>
>
>
> I'd very much appreciate someone also using FW 5.50 and DXLab would check
> to
> see if my experience is unique to me or not.
>
>
>
> Thanks.
>
>
>
> 73, Jim N7US
>
>
>
>
>
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Re: [Elecraft] Charging IMEDION2400 mAh batteries?

[Greg Troxel]

"David F. Reed"  writes:

> I have these MEDION2400 mAh batteries that I am using in my KX3; I
> have 2 set of them so I can be charging one set while operating with
> the other.
>
> My question is, using my Powerex programmable charger, what settings
> should I use for current and time?

Assuming you have a MAHA/Powerex MH-C9000, for charge I would use 200 mA
or 500 mA, if you have the time, and 1 A otherwise, and sparingly 2A if
it's going to make your life better with operating time.  In general in
seems lower charge rates generate less heat and that's good, but 1A
isn't really a problem.

The MH-C9000 sets charge with current, and then decides when it is
done.  It will show you the charge delivered to each cell.

The internal charger is low rate and time only.  That seems fine too.

I also recommend doing a "refresh-analyze" cycle, 200 or 500 mA charge,
200 mA discharge, and recording the results (and putting labels on each
cell) when you get them, and every year or so.   I have found that
batteries that aren't tested can't be relied on long term.

73 de n1dam
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Re: [Elecraft] [K3] FW 5.5 issue??

[Joe Subich, W4TV]

In DXLab, when I click on RTTY DX spot in SpotCollector the K3
changes the frequency in the K3 but it's 850 Hz higher than the
frequency that DXLab sends to the radio. I'm using K3 FSK D with
1275/1445 tones, NOT AFSK.


An 850 Hz offset *sounds like* either your K3 or WinWarbler has
been reset to 2125/2295 Hz.  *CHECK BOTH* "Pitch" in the K3 and
"Mark Offset"/"Optimal Offset" in the FSK panel of WinWarbler's
Configuration dialog.


I don't know if my other problem is attributable to the firmware
either. DXLab's rig control module, Commander, has a nice feature
(activated by clicking on a button in the VFO B panel) that will
switch the radio to split and turn on the subreceiver (called "dual
receive" in Commander). It used to do both of those but now only
turns on split but not the subreceiver.


I've used DXLab Suite (Commander) for years with the K3 and do not
know what button in the VFO B panel to which you refer.  There are
*two* check boxes in the VFO A panel - one turns split on/off
(equivalent to holding A -> B on the K3 front panel) and the other
turns the Sub RX on/Off (equivalent to tapping Sub on the K3 front
panel).

I'm using FW 5.52 at present and all radio control features of
DXLab Suite work just the same as they have in prior versions
of the K3 firmware.

73,

   ... Joe, W4TV


On 10/1/2016 12:33 AM, Jim McDonald wrote:

I installed K3 FW 5.50 to use my K-Pod, which I like very much.  I have a
couple of weird problems using DXLab now that I can't explain and wonder if
the new FW might be related.



In DXLab, when I click on RTTY DX spot in SpotCollector the K3 changes the
frequency in the K3 but it's 850 Hz higher than the frequency that DXLab
sends to the radio.  I'm using K3 FSK D with 1275/1445 tones, NOT AFSK.



I don't know if my other problem is attributable to the firmware either.
DXLab's rig control module, Commander, has a nice feature (activated by
clicking on a button in the VFO B panel) that will switch the radio to split
and turn on the subreceiver (called "dual receive" in Commander).  It used
to do both of those but now only turns on split but not the subreceiver.



I'd very much appreciate someone also using FW 5.50 and DXLab would check to
see if my experience is unique to me or not.



Thanks.



73, Jim N7US





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[Elecraft] Line Out properties K3

[kc0vkn]

  Hi folks,


   I sometimes record audio from my K3; sometimes new DX that I've worked, 
sometimes short snips of QSO's to share how sigs were at my QTH..

   After the last update I noticed that Line Out doesn't carry sidetone.  
Looking in the list archives, this appears to have always been the case-- has 
it really?  I'm 99% certain I was not using phones or speaker line out for this 
duity in the past; I would have used Line Out for the fix audio level out.. 
but, as you can tell, I'm second guessing myself...

  So, can somebody confirm that I am/not crazy?

73's

Joe KC0VKN

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