Re: [Elecraft] K4 pre-distortion?

[Dave]

In a word “yes”. Given that in order to match the RX performance of my
existing K3/P3 (dual RX, K3S synths) it would require me to purchase the
most expensive K4 version, then to me the only possible advantages over my
K3 would be improved SSB TX IMD and improved RX DSP noise reduction.

The K3 noise reduction is very poor, I have never found it useful on SSB,
and certainly not on CW. The K3 TX SSB 3rd/5th/7th/9th IMD products spread
very wide and resemble a felled Christmas tree laid on its side. So a
significant improvement in these areas is where the K4 needs to start.

Reading between the lines on both the Elecraft FAQs and this list, from the
lack of an official mention of pre-distortion or improved TX IMD, I take it
to mean the provision is a possible future upgrade and not included
initially. Kinda like Icom including a frequency reference input socket on
the IC9700 and buyers (incorrectly) assuming the IC9700 locks to an
external reference (which it doesn’t).

73 Dave

>On Sat, 15 Jun 2019 at 12:31, Michael >Walker wrote:

> >Would having if be a deal breaker?
> >
> >Mike
> >
> >Sent from my iPad
>
>
> --
Sent from my iPhone SE
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Re: [Elecraft] Help with IF Noise, DSP Noise, NR settings

[W2xj]

Looking at the MECC map, I’m pretty sure the 500 KV line is +- 500 KV DC so 
that would by itself make it pretty quiet. 

Sent from my iPad

> On Jun 15, 2019, at 7:34 PM, Fred Jensen  wrote:
> 
> I have never found a noise blanker to be of particular value, if any at all, 
> on general power line hash [the "grass" along the baseline of a panadapter.  
> At our prior home in Auburn CA, I had a 3-phase ~70 KV transmission line on  
> running across the lower end of the property that connected a series of 
> hydroelectric plants above and below us, and two 3-phase 112 KV transmission 
> lines on towers about 1/4 mile away.  The 70 KV line was essentially quiet.  
> The 112 KV lines was perhaps S3-4 on 80 and had a fairly high frequency sound 
> ... I guess from the 3-separate phases with peaks occuring at 360 Hz.  The K3 
> NB was ineffective against it.  With the level set high enough to affect the 
> noise level in the headphones, SSB was highly distorted and CW was chopped up.
> 
> Here in NV, we are about 1/2 mile from a 500 KV 3-phase transmission line 
> connecting a power plant in Patrick NV to someplace up in OR, probably along 
> the Columbia.  It is fairly quiet, S2-3 on 80, and again seems to be high 
> frequency enough that the K3 NB is ineffective.  I've concluded that, while 
> technically it all is impulsive [arcs on voltage peaks], the peaks must 
> overlap enough and/or are of a high enough frequency that the NB either can't 
> find them or punches too many too big holes in the signal.  It might be more 
> effective on noise from a single phase line, don't know.
> 
> I rarely hear ignition noise from spark plugs anymore, however the landscape 
> maintenance crew showed up earlier this spring to aerate and de-thatch the 
> grass.  Their aerator gizmo had an old 7 HP engine with strong ignition 
> noise.  The NB took all of it out just fine at very low settings.
> 
> 73,
> Fred ["Skip"] K6DGW
> Sparks NV DM09dn
> Washoe County
> 
>> On 6/14/2019 11:33 AM, Bob McGraw K4TAX wrote:
>> David et al;
>> 
>> My statement is almost word for word from the Elecraft K3 manual.   And some 
>> from work done by Art Collins and company at Collins Radio.  They prescribed 
>> the function of a Noise Blanker as follows:
>> 
>> "The following operational requirements were kept in mind:
>> 
>> 1. Reduction of ignition noise from vehicles.
>> 2. Reduction of power line corona noise occurring at 120 CPS repetition
>>rates.
>> 3. Reduction of local thunderstorm disturbances.
>> 4. And, in genera

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Re: [Elecraft] K3 Port sharing redux

[M. George]

Wes, maybe I read your email wrong, but you implied that setting up
the com0com pairs was a PITA. You used the acronym PITA and I assumed
you were talking about com0com.  That's why I commented that you
actually do not need to look at the device manager because it appears
that confused you. Like anything, it isn't a PITA after you understand
how it works. I showed that in the video because it would be a natural
question for guys to look at.  But again, you do not need to look at
the device manager unless you are curious.  I find it humorous you are
using a 12 year old logging program that is no longer supported. ;)
wink, wink. Wow. :) DXBase must really be something special. ;) I
doubt I'll be switching to DXBase any time soon.

You said you were using Omni-rig with WSJT... there is no reason for
that with Win4K3Suite.  You could probably use LP-Bridge too and avoid
using Omni-Rig.  You could if you needed to (use Omni-Rig with
Win4K3Suite) but I see no reason for it unless you like to complicate
your setup... that's what I said in my previous email. The mis-mash of
LP-Bridge and Omni-Rig etc... gets ugly.  And if you were using NaP3
with LP-Bridge you would see the instability issues much more often...
the dreaded red X in the NaP3 screen.  But again, it doesn't sound
like you are doing that.  You are using SpectraVue?? and I'm not
familiar with that, but if it directly supports the K3 CAT feed
connection you could simply setup a virtual com0com pair there and
SpectraVue would think it was directly connected to the K3.

If you leave your computer running all the time, I'm not sure why the
UAC and or start up of software is a concern either.  That seemed like
a big deal for some reason in your email I replied to.

If auto start of DXBase from Win4K3Suite is a show stopper, you better
stick with LP-Bridge, but I see no reason why you couldn't setup a
batch file for that and have Win4K3Suite start up the batch file that
runs DXBase.  You can see that when you select an auto start program,
.bat is one of the options.

Anyway, good luck... if you want to keep this discussion going, I
would suggest we take it off the list here and send direct email.  You
asked for input on sharing the K3 CAT feed and if you wanted my
opinion on Win4K3Suite you certainly got it... :)  I won't be replying
on the elecraft list again related to our discussion.  Send me an
email direct.

Max NG7M




Max,

I'm not necessarily set on using LP-Bridge, although it is suiting my
needs.  As
to its age, my logging program hasn't been updated in 12 years and it still
works fine. I don't have a problem with the start up time, generally, the
computer is on all of the time and my programs are all loaded.  I don't really
care about CAT commands as long as 1) my logging program can read the K3
frequency and mode, 2)  SpectraVue can communicate with the K3 and vice versa,
3)  a couple of other programs can do the same.

I never said I was using Omni-rig with Win4K3, that I found necessary
to run FT8
using LPB at someone's suggestion.

I find it a bit humorous to have you tell me that I didn't need to look at
Device Manager since I got the idea by watching your video @29:30  (Yes, I did
watch it and it was helpful).

I launch DXBase using a Windows task to avoid the UAC prompt.  I have a desktop
shortcut that points to that task.  I can run that script in LPB to autostart
DXBase but AFAIK it won't autostart in Win4K3.

Wes


-- 
M. George
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[Elecraft] Elecraft CW Net Announcement

[kevinr]

Good Evening,

   Solar conditions are little different than they have been for 
weeks.  We're due to enter another stream of ions which will keep us in 
business for a while.  I will continue switching between antennas to see 
how they compare.


   I mentioned the black bear to my neighbor who said he'd seen her 
too.  She's expanding her range as she matures.  An active clear cut 
nearby may be spooking her.



Please join us on:

14050 kHz at 2200z Sunday (3 PM PDT Sunday)
 7047 kHz at z Monday (5 PM PDT Sunday)

73,
Kevin. KD5ONS

-

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Re: [Elecraft] Bengali adventurer mono key with KX3 mount

[marvwheeler]

The Bengali key has sold

 

Thanks

Marv

 

From: marvwhee...@nwlink.com  
Sent: Thursday, June 13, 2019 9:40 PM
To: 'Elecraft@mailman.qth.net' 
Subject: Bengali adventurer mono key with KX3 mount

 

I have a Bengali Adventurer Mono key in the original box with a mount for
the KX3. It is without mars or blemishes. I have used a bit of electronic
cable lacing to secure the cable to the key. It can simply be cut and
removed. Also included is the 0.3 mm feeler gage and cleaning cloth. The key
is AS NEW. New from Bengali today is  $324.68. I am asking $260.00 shipped
to your door.

 

Marv

KG7V 

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Re: [Elecraft] K3 Port sharing redux

[Wes]

Max,

I'm not necessarily set on using LP-Bridge, although it is suiting my needs.  As 
to its age, my logging program hasn't been updated in 12 years and it still 
works fine. I don't have a problem with the start up time, generally, the 
computer is on all of the time and my programs are all loaded.  I don't really 
care about CAT commands as long as 1) my logging program can read the K3 
frequency and mode, 2)  SpectraVue can communicate with the K3 and vice versa, 
3)  a couple of other programs can do the same.


I never said I was using Omni-rig with Win4K3, that I found necessary to run FT8 
using LPB at someone's suggestion.


I find it a bit humorous to have you tell me that I didn't need to look at 
Device Manager since I got the idea by watching your video @29:30  (Yes, I did 
watch it and it was helpful).


I launch DXBase using a Windows task to avoid the UAC prompt.  I have a desktop 
shortcut that points to that task.  I can run that script in LPB to autostart 
DXBase but AFAIK it won't autostart in Win4K3.


Wes



On 6/15/2019 3:27 PM, M. George wrote:

Wes, I think you are pretty well set on the continued use of LP_Bridge.
  Keep in mind that Larry hasn't touched / updated LP_Bridge for 3.5 years,
plus it's painful to wait for it to start up the virtual eltima IMHO.  You
just do not get true virtual K3 CAT instances with LP_Bridge that support
all the K3 CAT commands etc.  Plus with LP_Bridge you can't supply a K3 CAT
read only feed direct to hardware at anything faster than 4800 baud, and
when you do that, the hardware must be set to Kenwood protocol IMHO, again
the hardware won't see the full K3 CAT command set.

There is no reason to use Omni-rig with Win4K3Suite.  Again, the beauty to
true virual K3 CAT feeds.  The software and hardware thinks it's connected
direct to your K3/S.  No more fooling around with another abstraction layer
and required support by the hardware you are using.

com0com port setup couldn't be easier when you use the com0com graphical
setup program.  No need to look at the device manager at all.  And the port
pairs are created at boot time without a laborious wait for Eltima drivers
to load like LP-Bridge.  The control you get with com0com and Win4K3Suite
is much more robust and powerful than LP-Bridge.  Hands down... as I said
before... LP-Bridge isn't in the same ball park, and I also ran LP-Bridge
for years, but I would never go back at this point.  However, you can tell
I'm a Win4K3Suite fan boy. :)  Did you watch my video?
https://www.youtube.com/watch?v=zbf7BPfcj4U

You are really limiting yourself with LP-Bridge, especially if you use
Omni-rig too?  No reason for that even with WSJT etc.  You just don't need
any of that abstraction layer API nonsense with Win4K3Suite.

As far as the auto launch question, you should join and post int he
Win4K3Suite Groups.io group.  Personally, I don't use any auto launch
because with Win4K3Suite, once it's started and it does start up fast
unlike LP-Bridge (talk about a PITA), you can then just launch the software
you want to use for the type of operating you are doing.  I start
Win4K3Suite and Launch N1MM if I'm going to contest, or DXLap for general
operating and WSJT for FT-8, or run them all at the same time.  You can see
this in the video .  By the
time LP-Bridge finally starts and creates the virtual ports, you could have
everything running twice with Win4K3Suite.

As far as the UAC prompt, are you saying that LP-Bridge launches your app
without sowing the UAC prompt to run the software as an administrator?  Are
you starting LP-Bridge as an admin in this case?  Try running Win4K3Sute as
an admin and launch your apps?

Anyway, my two cents... I'm a Win4KSuite fan so its clear I'm very bias at
this point, big time and I like the ongoing updates and full support of the
K3 full CAT command set.

Good luck, I really think you are making it harder than it needs to be
where you are trying to use Omni-rig and LP-Bridge and mixing a semi
virtual K3 CAT via LP-Bridge and then using UDP broadcasts with Omni-Rig
and or a direct Omni-rig connect to a virual port in LP-Bridge?  You could
do the same thing with Win4K3Sute, but there is no need to introduce
Omni-Rig for WSJT, just connect WSJT to a virtual K3 CAT feed from
Win4K3Suite or LP-Bridge for that matter.

I could go on and on... you are very limited with LP-Bridge... where with
Win4K3Suite, you can setup 6 Virtual K3 CAT feeds... using software and or
hardware and whatever baud radio you want and you can control if they are
read/write polling or not K3 CAT feeds.  It's the best $50-$60 software I
have bought for my station needs.  But then again, LP-Bridge is free.  It
comes down to good, fast and cheap you can only ever have two of those
three options and sacrifice the third one. :)

Max NG7M




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Re: [Elecraft] K3s Sensitive adjustment for FT8

[Bob McGraw K4TAX]

You need to back down the level out of the computer.  Also the PWR level in the 
software, which is actually audio level , needs  to be backed down.  This 
should allow you to run the Line Gain at 25 to 35.  Never run any of the 
controls or levels at maximum or near minimum.  Mid range is best  and tweak 
each a small amount as necessary. 

Bob, K4TAX


Sent from my iPhone

> On Jun 15, 2019, at 6:43 PM, Gary Smith  wrote:
> 
> Something new has come up with the 
> K3s/JTDX settings and I can't find where 
> to adjust it to make a change. This is 
> new, it has been fine till a couple days 
> ago & maybe the recent win 10 update 
> nailed me again?
> 
> Till now, when setting the levels for Tx 
> for FT8, I would adjust the setting on the 
> screen for 4-5 bars with the last one 
> flickering by adjusting the output with 
> the speed/Mic knob. The line level would 
> be somewhere around 5-7 to get this 
> reading.
> 
> Now I have what seems like 
> hyper-sensitivity, overdrive in that I now 
> get 5 solid bars with none flickering at 
> line level 2, I get no bars at line level 
> 1.
> 
> With the K3s set at 20W drive: 
> 
> At line level 0 I have no output. 
> 
> At line level 1 I have 18W & no bars
> 
> At line level 2 I have 5 bars and 18W 
> output.
> 
> There is no adjustment to give me 1, 2, 3 
> or 4 bars.
> 
> I have tried setting the windows sound 
> settings at different values with no 
> success, this issue persists.
> 
> Any idears?
> 
> Thanks, 
> 
> Gary
> KA1J
> 
> 
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> 


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Re: [Elecraft] K3s Sensitive adjustment for FT8

[Nr4c]

Go to the Win10 volume mixer. Turn down the wsjt slider to about 30% from the 
bottom. Now the K3 Lin In control will have the proper adjustment sensitivity. 

Sent from my iPhone
...nr4c. bill


> On Jun 15, 2019, at 7:43 PM, Gary Smith  wrote:
> 
> Something new has come up with the 
> K3s/JTDX settings and I can't find where 
> to adjust it to make a change. This is 
> new, it has been fine till a couple days 
> ago & maybe the recent win 10 update 
> nailed me again?
> 
> Till now, when setting the levels for Tx 
> for FT8, I would adjust the setting on the 
> screen for 4-5 bars with the last one 
> flickering by adjusting the output with 
> the speed/Mic knob. The line level would 
> be somewhere around 5-7 to get this 
> reading.
> 
> Now I have what seems like 
> hyper-sensitivity, overdrive in that I now 
> get 5 solid bars with none flickering at 
> line level 2, I get no bars at line level 
> 1.
> 
> With the K3s set at 20W drive: 
> 
> At line level 0 I have no output. 
> 
> At line level 1 I have 18W & no bars
> 
> At line level 2 I have 5 bars and 18W 
> output.
> 
> There is no adjustment to give me 1, 2, 3 
> or 4 bars.
> 
> I have tried setting the windows sound 
> settings at different values with no 
> success, this issue persists.
> 
> Any idears?
> 
> Thanks, 
> 
> Gary
> KA1J
> 
> 
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Re: [Elecraft] K3s Sensitive adjustment for FT8

[hbjr]

Had almost the same thing happen after the update.

Make sure that WSJT-X is using the correct Audio codec.

The slider in WSJT-X for output will override windows sound settings.

Thanks,
Hank
K3S, PS, KX3

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Gary Smith
Sent: Saturday, June 15, 2019 7:44 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] K3s Sensitive adjustment for FT8

Something new has come up with the
K3s/JTDX settings and I can't find where to adjust it to make a change. This
is new, it has been fine till a couple days ago & maybe the recent win 10
update nailed me again?

Till now, when setting the levels for Tx for FT8, I would adjust the setting
on the screen for 4-5 bars with the last one flickering by adjusting the
output with the speed/Mic knob. The line level would be somewhere around 5-7
to get this reading.

Now I have what seems like
hyper-sensitivity, overdrive in that I now get 5 solid bars with none
flickering at line level 2, I get no bars at line level 1.

With the K3s set at 20W drive: 

At line level 0 I have no output. 

At line level 1 I have 18W & no bars

At line level 2 I have 5 bars and 18W
output.

There is no adjustment to give me 1, 2, 3 or 4 bars.

I have tried setting the windows sound
settings at different values with no
success, this issue persists.

Any idears?

Thanks, 

Gary
KA1J


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[Elecraft] K3s Sensitive adjustment for FT8

[Gary Smith]

Something new has come up with the 
K3s/JTDX settings and I can't find where 
to adjust it to make a change. This is 
new, it has been fine till a couple days 
ago & maybe the recent win 10 update 
nailed me again?

Till now, when setting the levels for Tx 
for FT8, I would adjust the setting on the 
screen for 4-5 bars with the last one 
flickering by adjusting the output with 
the speed/Mic knob. The line level would 
be somewhere around 5-7 to get this 
reading.

Now I have what seems like 
hyper-sensitivity, overdrive in that I now 
get 5 solid bars with none flickering at 
line level 2, I get no bars at line level 
1.

With the K3s set at 20W drive: 

At line level 0 I have no output. 

At line level 1 I have 18W & no bars

At line level 2 I have 5 bars and 18W 
output.

There is no adjustment to give me 1, 2, 3 
or 4 bars.

I have tried setting the windows sound 
settings at different values with no 
success, this issue persists.

Any idears?

Thanks, 

Gary
KA1J


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Re: [Elecraft] Help with IF Noise, DSP Noise, NR settings

[Fred Jensen]

I have never found a noise blanker to be of particular value, if any at 
all, on general power line hash [the "grass" along the baseline of a 
panadapter.  At our prior home in Auburn CA, I had a 3-phase ~70 KV 
transmission line on  running across the lower end of the property that 
connected a series of hydroelectric plants above and below us, and two 
3-phase 112 KV transmission lines on towers about 1/4 mile away.  The 70 
KV line was essentially quiet.  The 112 KV lines was perhaps S3-4 on 80 
and had a fairly high frequency sound ... I guess from the 3-separate 
phases with peaks occuring at 360 Hz.  The K3 NB was ineffective against 
it.  With the level set high enough to affect the noise level in the 
headphones, SSB was highly distorted and CW was chopped up.


Here in NV, we are about 1/2 mile from a 500 KV 3-phase transmission 
line connecting a power plant in Patrick NV to someplace up in OR, 
probably along the Columbia.  It is fairly quiet, S2-3 on 80, and again 
seems to be high frequency enough that the K3 NB is ineffective.  I've 
concluded that, while technically it all is impulsive [arcs on voltage 
peaks], the peaks must overlap enough and/or are of a high enough 
frequency that the NB either can't find them or punches too many too big 
holes in the signal.  It might be more effective on noise from a single 
phase line, don't know.


I rarely hear ignition noise from spark plugs anymore, however the 
landscape maintenance crew showed up earlier this spring to aerate and 
de-thatch the grass.  Their aerator gizmo had an old 7 HP engine with 
strong ignition noise.  The NB took all of it out just fine at very low 
settings.


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

On 6/14/2019 11:33 AM, Bob McGraw K4TAX wrote:

David et al;

My statement is almost word for word from the Elecraft K3 manual.   
And some from work done by Art Collins and company at Collins Radio.  
They prescribed the function of a Noise Blanker as follows:


"The following operational requirements were kept in mind:

1. Reduction of ignition noise from vehicles.
2. Reduction of power line corona noise occurring at 120 CPS repetition
   rates.
3. Reduction of local thunderstorm disturbances.
4. And, in general, reduction of any man-made noise which is impulsive
   in nature.

Basically, all the above forms of noise interference are impulsive 
functions with repetition rates than can extend up to 100 KC in the 
case of the strokes in a thunderstorm."


Those are my sources.

Again both descriptions use repetitive pulse rates which are impulsive 
in nature.    In order for a NB to function efficiently it is best 
suited in a wide band signal path that is not restricted by filters.   
Hence a wide IF stage of the receiver before any filtering.


As to thunderstorms, since lightning contains many pulses in a single 
stroke, the NB is suited to minimize those pulses while at the same 
time, the bulk of the strike energy is affecting the receiver in other 
means. Namely AGC.  Many receivers suffer grossly from this 
phenomenon.   Fortunately Elecraft and Tentec took actions with their 
designs to minimize this phenomenon based on the work of Rob 
Sherwood.    And regarding thunderstorms, there is a clear difference 
in the stroke and content of such for  a "local thunderstorm" as 
compared to the noise from distant thunderstorms several hundred miles 
away.   The distant thunderstorm is affected by propagation and may 
have several wave fronts with different arrival times where as a local 
thunderstorm only has a single wave front.   Hence the waveform is 
quite different and the means to suppress such will be different.



73

Bob, K4TAX


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Re: [Elecraft] K3 Port sharing redux

[M. George]

Wes, I think you are pretty well set on the continued use of LP_Bridge.
 Keep in mind that Larry hasn't touched / updated LP_Bridge for 3.5 years,
plus it's painful to wait for it to start up the virtual eltima IMHO.  You
just do not get true virtual K3 CAT instances with LP_Bridge that support
all the K3 CAT commands etc.  Plus with LP_Bridge you can't supply a K3 CAT
read only feed direct to hardware at anything faster than 4800 baud, and
when you do that, the hardware must be set to Kenwood protocol IMHO, again
the hardware won't see the full K3 CAT command set.

There is no reason to use Omni-rig with Win4K3Suite.  Again, the beauty to
true virual K3 CAT feeds.  The software and hardware thinks it's connected
direct to your K3/S.  No more fooling around with another abstraction layer
and required support by the hardware you are using.

com0com port setup couldn't be easier when you use the com0com graphical
setup program.  No need to look at the device manager at all.  And the port
pairs are created at boot time without a laborious wait for Eltima drivers
to load like LP-Bridge.  The control you get with com0com and Win4K3Suite
is much more robust and powerful than LP-Bridge.  Hands down... as I said
before... LP-Bridge isn't in the same ball park, and I also ran LP-Bridge
for years, but I would never go back at this point.  However, you can tell
I'm a Win4K3Suite fan boy. :)  Did you watch my video?
https://www.youtube.com/watch?v=zbf7BPfcj4U

You are really limiting yourself with LP-Bridge, especially if you use
Omni-rig too?  No reason for that even with WSJT etc.  You just don't need
any of that abstraction layer API nonsense with Win4K3Suite.

As far as the auto launch question, you should join and post int he
Win4K3Suite Groups.io group.  Personally, I don't use any auto launch
because with Win4K3Suite, once it's started and it does start up fast
unlike LP-Bridge (talk about a PITA), you can then just launch the software
you want to use for the type of operating you are doing.  I start
Win4K3Suite and Launch N1MM if I'm going to contest, or DXLap for general
operating and WSJT for FT-8, or run them all at the same time.  You can see
this in the video .  By the
time LP-Bridge finally starts and creates the virtual ports, you could have
everything running twice with Win4K3Suite.

As far as the UAC prompt, are you saying that LP-Bridge launches your app
without sowing the UAC prompt to run the software as an administrator?  Are
you starting LP-Bridge as an admin in this case?  Try running Win4K3Sute as
an admin and launch your apps?

Anyway, my two cents... I'm a Win4KSuite fan so its clear I'm very bias at
this point, big time and I like the ongoing updates and full support of the
K3 full CAT command set.

Good luck, I really think you are making it harder than it needs to be
where you are trying to use Omni-rig and LP-Bridge and mixing a semi
virtual K3 CAT via LP-Bridge and then using UDP broadcasts with Omni-Rig
and or a direct Omni-rig connect to a virual port in LP-Bridge?  You could
do the same thing with Win4K3Sute, but there is no need to introduce
Omni-Rig for WSJT, just connect WSJT to a virtual K3 CAT feed from
Win4K3Suite or LP-Bridge for that matter.

I could go on and on... you are very limited with LP-Bridge... where with
Win4K3Suite, you can setup 6 Virtual K3 CAT feeds... using software and or
hardware and whatever baud radio you want and you can control if they are
read/write polling or not K3 CAT feeds.  It's the best $50-$60 software I
have bought for my station needs.  But then again, LP-Bridge is free.  It
comes down to good, fast and cheap you can only ever have two of those
three options and sacrifice the third one. :)

Max NG7M


-- 
M. George
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Re: [Elecraft] Adding KPA-500/KAT-500 to K3s

[Kevin, N4TT]

Thanks for all the great responses. Seems I was on the right track. Fred's
book mentions that some day the ATU TUNE may control the KAT500 and that
had me wondering if I had something wrong.

Everything trained up nicely and I think I have the per-band op/stdby
powers set right. The KAT500 is in MAN and a backup was done after
training. Now it's time to get on the air.

Thanks and 73,

Kev N4TT

On Sat, Jun 15, 2019 at 4:35 PM Kevin, N4TT  wrote:

> I just got the second aux cable and have the physical setup completed
> according to the docs.
>
> The only configuration item that I changed was to set KAT500Y in
> CONFIG:KAT3. The K3s ATU is in bypass mode.
>
> I expected to be able to hit the ATU TUNE button on the K3s and initiate a
> tune through the KAT500. Is this not an option? When I hit ATU TUNE the
> display shows NO ATU.
>
> I also saw mention of setting power for barefoot and amp modes but I
> haven't figured out how that's set up. What prevents the K3s from sending
> too much power to the KPA500 in operate? Does it just know or do I have a
> setting I'm missing?
>
> 73,
> Kev N4TT
>
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[Elecraft] Adding KPA-500/KAT-500 to K3s

[Kevin, N4TT]

I just got the second aux cable and have the physical setup completed
according to the docs.

The only configuration item that I changed was to set KAT500Y in
CONFIG:KAT3. The K3s ATU is in bypass mode.

I expected to be able to hit the ATU TUNE button on the K3s and initiate a
tune through the KAT500. Is this not an option? When I hit ATU TUNE the
display shows NO ATU.

I also saw mention of setting power for barefoot and amp modes but I
haven't figured out how that's set up. What prevents the K3s from sending
too much power to the KPA500 in operate? Does it just know or do I have a
setting I'm missing?

73,
Kev N4TT
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[Elecraft] [K2] WTB K2 metal ... sides, bottom with stand

[Alan D. Wilcox]

Hello,

Finally finished the resurrection of an old K2 for my shop use,
but I need the missing metal pieces:

Both sides,
Bottom (front only) with the tilt stand

They don’t need to be pretty: I can touchup paint if it’s really bad.

Reply off list of course.

Many thanks,
Alan

Alan D. Wilcox, W3DVX
570-916-9590 (cell, text)
https://WilcoxEngineering.com
http://www.eham.net/reviews/detail/6768 ... Elecraft Client Comments

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[Elecraft] Wanted homeless KANT3

[w4sc]

Looking for KANT3.  Please respond OFF list.

Ben W4SC

Sent from Mail for Windows 10

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Re: [Elecraft] K3s RX & TX EQ... N/A

[Kevin, N4TT]

Never mind. I was not in LSB. I was in Data. Makes perfect sense why it
wouldn't apply to the present context.

Lovin' the radio. Taking a little time to learn all the ins and outs.

Kev N4TT



On Sat, Jun 15, 2019 at 1:03 PM Kevin, N4TT  wrote:

> I have the proset-k2 running off the rear panel mic/phone jacks. It sounds
> fine on mon (too mic shy to test on air) but I'd like to adjust the
> equalizer settings for Rx and Tx to get a feel for them.
>
> For RX, as an example, I press the 1 button and see 0.05 +0. When I try to
> adjust the VFO to change that setting or any Rx and Tx equalizer setting I
> hear a beep and see N/A.
>
> Book says: N/A message (Not Applicable): The function you’re trying to use
> does not apply in the present context.
>
> I'm in LSB, test mode so I don't transmit. What step am I missing?
>
> 73,
> Kev N4TT
>
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[Elecraft] K3s RX & TX EQ... N/A

[Kevin, N4TT]

I have the proset-k2 running off the rear panel mic/phone jacks. It sounds
fine on mon (too mic shy to test on air) but I'd like to adjust the
equalizer settings for Rx and Tx to get a feel for them.

For RX, as an example, I press the 1 button and see 0.05 +0. When I try to
adjust the VFO to change that setting or any Rx and Tx equalizer setting I
hear a beep and see N/A.

Book says: N/A message (Not Applicable): The function you’re trying to use
does not apply in the present context.

I'm in LSB, test mode so I don't transmit. What step am I missing?

73,
Kev N4TT
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[Elecraft] Tuning Electrically Short Antennas

[Bob McGraw K4TAX]

From a source and a friend of mine, KE4PT.

F Y I -

{quote}

In article by two well-known radio amateurs, “Tuning Electrically Short 
Antennas for Field Operation,” appeared in Microwave Journal.  Authored by QEX 
Editor Kai Siwiak, KE4PT, and award-winning researcher Ulrich Rohde, N1UL, the 
article points out that both Amateur Radio and military applications exist for 
20-W battery-powered radios equipped with whip antennas.  “In general, the whip 
antenna which makes the radio portable is not optimized for signal propagation: 
A whip antenna has no ground return or proper counterpoise,” the article notes. 
 “While some users drag a wire of up to 8 meters behind, this is not an ideal 
solution.”

As the article explains, electrically short antennas — typically 0.1 λ or shorter — 
look like a capacitor, with a typical capacitance of 25 pF per meter of length.  
"At 2 MHz, where the wavelength is 150 meters, an inductor of 84 μH is required 
for resonance,” the article says.  But just getting a good VSWR is not all there is 
to it.

Rohde stated that loading coil placement in a short vertical antenna is 
critical, and “the greater the elevation of the coil, the better the radiation. 
He said that “center loading” — he considers the “best compromise” to be more 
on the order of two-thirds’ loading — can dramatically affect both the 
antenna’s transmitting and receiving performance, as opposed to base loading, 
as found with popular so-called screwdriver antennas. Radials of some sort also 
are essential.

As the article points out. “With center loading, both the radiation resistance 
and integrated surface are larger, which are better for radiation.” Inductors 
are the lossy components of an antenna tuner, while capacitors “are infinitely 
better.” The authors conclude that, for optimal operation, antenna radials 
should be 0.25 λ, with one sufficient for tuning, and up to four producing a 
symmetrical azimuth. “Connecting the HF radio ground to a large metallic object 
is a good choice,” the article said.

Ulrich stated that optimizing an antenna in the manner the article describes 
will produce “significantly better” signal reception, although a short antenna 
will also have a narrower bandwidth. The objective should not be to get a good 
VSWR but to keep in mind that there’s a difference between resonance and 
radiation.

“These requirements for optimum antenna performance make HF man-pack radios 
somewhat complicated and unattractive,” the authors concede.. “Nonetheless, the 
well matched and radiating antenna provides the most success, and some of these 
highly portable radios provide vital communications in disaster areas — 
recently in Puerto Rico and South Florida.”

http://www.arrl.org/news/tuning-electrically-short-antennas-for-field-operation-is-research-topic{end 
quote} 73 Bob, K4TAX


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Re: [Elecraft] Left hand rotary encoder failure on KX3

[Thorsten Fricke]

Richard,

as you're in UK, you may also try to contact QRP Project in Berlin,
Germany. They're doing the official Elecraft support for Europe and it
might be quicker than sending the TRX to US

Hope this helps
73 Thorsten, DH4FT

Am 13.06.19 um 14:45 schrieb Don Wilhelm:

Richard,

I suggest you contact supp...@elecraft.com for that information and
possible resolution.

73,
Don W3FPR

On 6/13/2019 3:07 AM, Richard Corfield wrote:

Serial number is 8383, if that helps place the manufacturing date and
therefore whether it's part of a batch with a known issue?

  - Richard


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Re: [Elecraft] 40 meter AX1

[hbjr]

Thank you sir for the update!!

 

Hank

K4HYJ

K3S, P3, KX3

 

From: Peter J. McClosky  
Sent: Wednesday, June 12, 2019 5:44 PM
To: Hank 
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] 40 meter AX1

 

When I spoke to them late last month, they said they were shooting for mid
September.  With a price point not set yet.

 

-

Peter J. McClosky, N7IY
Eugene, Oregon
pmcclo...@earthlink.net  
n...@arrl.net  
http://home.earthlink.net/~pmcclosky/

 

On Jun 12, 2019, at 12:03 PM, Hank mailto:h...@optilink.us> > wrote:

 


Anyone hear any updates on the 40 meter AX1 type product?  I think it was
called the AX1EX or similar?

Just curious - there was some discussion several months ago about a
prototype.

Hank
K3S, P3, KX3

 



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Re: [Elecraft] FIELD DAY PREP

[Bob McGraw K4TAX]

Those transceivers are noted to have that issue.  They are very popular 
and there are thousands of them on the air today.  And we are always 
concerned better receivers.   How about cleaner transmitters.  That 
company did correct the problem but only with releasing a new model.


You aren't the only instance of those causing a problem.

73

Bob, K4TAX


On 6/14/2019 11:59 PM, Vic Rosenthal wrote:

One of the worst FD problems I’ve experienced was a Japanese transceiver (I’ve 
honestly forgotten the brand) in the SSB tent that transmitted a wideband hiss 
whenever the PTT was closed. We couldn’t operate CW on the same band even 
though there was no problem caused by his SSB signal.

Victor 4X6GP


On 14 Jun 2019, at 20:52, Bob McGraw K4TAX  wrote:

So was the issue the result of poor shielding and connectors of cables inside 
the trailer or actual antenna separation?  That would do it.

And could the SSB station be pushing the power and ALC and compression thus 
likely causing distortion and splatter?   That would do it.

One of my major pet gripes for net control operators and contest operators is 
the fact they believe turning things up a bit with the thinking they will be 
heard a bit betterWhen in fact they are making their signal more difficult 
to copy.   If their station sounds good during SSB rag chew QSO's the the same 
settings should also be good for contests, Field Day, and when a net control.  
The mentality of turning things up a wee bit is just pure B. S.

Bob, K4TAX


Sent from my iPhone


On Jun 14, 2019, at 10:52 AM, KENT TRIMBLE  wrote:

Good morning, Bob . . .

We normally use 75-100 feet separation between dipoles aligned end-to-end, and 
have had no problems over the years.  However, last year we were limited to 
less than 50-feet separation and I noticed the Carrier Operated Relay (COR) in 
my K3 was kicking on occasionally from the SSB station with which we (CW) were 
obliged to share a trailer.

I tried a TRP-150 for the first time on the air this morning and a station in 
Michigan detected no clicks, truncating, or other aberrations.

We'll see.

73,

Kent  K9ZTV






On 6/14/2019 10:24 AM, Bob McGraw K4TAX wrote:
With stations running 100 watts or less and reasonable antenna separation, I've found no 
reason for a Receiver Input Protector. Although, it might be a good idea to circumvent a 
"screw up" by an operator.   I've seen some mighty strange things done by 
knowledgeable hams at Field Day.

73

Bob, K4TAX



On 6/14/2019 10:07 AM, KENT TRIMBLE wrote:
Have any of you used Ameritron's "Receiver Input Protector" model TRP-150?  I 
find no reviews on eHam.

73,

Kent  K9ZTV


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Re: [Elecraft] K4 pre-distortion?

[Michael Walker]

Would having if be a deal breaker?

Mike

Sent from my iPad

> On Jun 15, 2019, at 6:59 AM, Dave  wrote:
> 
> I’ve not seen confirmation as to whether the K4 uses pre-distortion to
> improve the TX IMD levels. The inclusion of a sample input socket suggests
> it does. If so, does a barefoot K4 use pre-distortion and will there be a
> mod kit for the KPA500 to provide a sample output?
> 
> 73 Dave
> -- 
> Sent from my iPhone SE
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[Elecraft] K4 pre-distortion?

[Dave]

I’ve not seen confirmation as to whether the K4 uses pre-distortion to
improve the TX IMD levels. The inclusion of a sample input socket suggests
it does. If so, does a barefoot K4 use pre-distortion and will there be a
mod kit for the KPA500 to provide a sample output?

73 Dave
-- 
Sent from my iPhone SE
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