Re: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??

[David Gilbert]

Seriously??  Why do you think that Elecraft's tuners (like just about 
every other one) have max power ratings that differ depending upon the 
SWR?  For example, for the KAT500 has a max power rating of 1000 watts 
into a 3:1 SWR but only a 600 watt rating into a 10:1 SWR???  It can 
match both SWRs, but not handle the same power at both.


Did you bother to check out TLW like I suggested?

Dave   AB7E



On 12/12/2020 8:59 PM, Walter Underwood wrote:

Of course there are high voltages or currents in some tuning solutions. Why do 
people think the Elecraft ATU would not be designed to handle those?

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


On Dec 12, 2020, at 7:36 PM, David Gilbert  wrote:


A matched conditon does NOT prevent the components of the tuner from seeing high voltages 
and/or high currents.  Check out TLW ... the transmission line application that comes 
free with the ARRL Antenna Book.  Pick a load that gives a high SWR and then click on the 
"Tuner" button for the application to draw one of four different tuner 
configurations for you.  The app will tell you what the voltages across each component 
are, and also the power loss (i.e., heating effects) in each one.

73,
Dave   AB7E




On 12/12/2020 8:18 PM, Walter Underwood wrote:

Tuning happens at low power, so transients are small. After it is matched, why 
would the K3 ATU not be rated for full power over the full SWR range?

Other components might fail, of course. Amphenol UHF connectors are only rated 
for 500 V.

wunder
K6WRU
Walter Underwood
CM87wj

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[Elecraft] Internal tuner with random wire

[Bob McGraw K4TAX]

The comments are good .  But considering all the pluses and minuses, wouldn’t 
it make more sense to use a OCFD and not worry about ground rods, counterpoise 
needs, high SWR, high voltage and currents in the tuner?   A well designed OCFD 
with correct Balun plus a common mode choke at the feed point and another at 
the radio will cover 80M - 10M with much less than a 10:1 SWR. 

A matched condition exists only between the ATU input and the PA output. The 
output voltage or current can be all over the place, including inside the ATU 
circuits.   And the ATU has a 10:1 matching range of 5 ohms to 500 ohms.  
Random wires can easily be outside of this range.  Thus the ATU can not 
effectively match the load.  

Bob, K4TAX


Sent from my iPhone

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Re: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??

[donovanf]

Hi Mike, 


You do have an alternative: 


Rather than using a random wire length, chose a wire length that 
produces well under 10:1 VSWR on the frequencies you intend to use. 


For end fed random wires, avoiding wire lengths close to multiples 
of 1/2 wavelength should be safe with the K3 tuner. 


73 
Frank 
W3LPL 

- Original Message -

From: "Mister Mike"  
To: donov...@erols.com 
Cc: elecraft@mailman.qth.net 
Sent: Sunday, December 13, 2020 1:04:26 AM 
Subject: Re: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal 
Tuner?? 


That is pretty much what I thought. I will have to read the fine manual and see 
how the automatic tuner works. Picked up this K3 in a swap deal a while back 
but I am still pretty much stuck ( happily) in the Collins KWM-2/S-Line “Stone 
Age” so I need time and patience (lots) to figure how to use these marvelous 
appliance radios. 


In any event I have a MAC-200 made by SGC who make pretty darn good tuners 
which I can use but that is another box to take along if I do a road trop. 


73 to all 


Michael, W1RC 



On Dec 12, 2020, at 6:37 PM, donov...@erols.com wrote: 




Hi Mike, 








Its not wise to use the K3 antenna tuner to tune a random wire. 
A truly random wire can easily produce VSWR greater than 10:1 
which is likely to damage the K3 tuner when running at full 
K3 output power. 


Its much wiser to use an external tuner with a random wire 


73 
Frank 
W3LPL 






-Original Message- 
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Mister Mike 
Sent: Saturday, December 12, 2020 9:42 AM 
To: elecraft@mailman.qth.net 
Subject: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner?? 

What is the best way to do this? I am not familiar with automatic tuners. 



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Re: [Elecraft] [K3] Locking VFO B

[Ken K6MR]

Long press A/B (BSET) and then long press RATE (Lock)

Ken K6MR

From: Victor Rosenthal 4X6GP
Sent: Saturday, December 12, 2020 20:24
To: Elecraft Reflector
Subject: [Elecraft] [K3] Locking VFO B

I seem to recall that there was a way to lock the K3's VFO B without
locking VFO A. Am I imagining this, or is it possible?
--
73,
Victor, 4X6GP
Rehovot, Israel
CWops #5
Formerly K2VCO
https://www.qsl.net/k2vco/
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[Elecraft] [K3] Locking VFO B

[Victor Rosenthal 4X6GP]

I seem to recall that there was a way to lock the K3's VFO B without 
locking VFO A. Am I imagining this, or is it possible?

--
73,
Victor, 4X6GP
Rehovot, Israel
CWops #5
Formerly K2VCO
https://www.qsl.net/k2vco/
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Re: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??

[Walter Underwood]

Of course there are high voltages or currents in some tuning solutions. Why do 
people think the Elecraft ATU would not be designed to handle those?

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

> On Dec 12, 2020, at 7:36 PM, David Gilbert  wrote:
> 
> 
> A matched conditon does NOT prevent the components of the tuner from seeing 
> high voltages and/or high currents.  Check out TLW ... the transmission line 
> application that comes free with the ARRL Antenna Book.  Pick a load that 
> gives a high SWR and then click on the "Tuner" button for the application to 
> draw one of four different tuner configurations for you.  The app will tell 
> you what the voltages across each component are, and also the power loss 
> (i.e., heating effects) in each one.
> 
> 73,
> Dave   AB7E
> 
> 
> 
> 
> On 12/12/2020 8:18 PM, Walter Underwood wrote:
>> Tuning happens at low power, so transients are small. After it is matched, 
>> why would the K3 ATU not be rated for full power over the full SWR range?
>> 
>> Other components might fail, of course. Amphenol UHF connectors are only 
>> rated for 500 V.
>> 
>> wunder
>> K6WRU
>> Walter Underwood
>> CM87wj
> 
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Re: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??

[David Gilbert]

A matched conditon does NOT prevent the components of the tuner from 
seeing high voltages and/or high currents.  Check out TLW ... the 
transmission line application that comes free with the ARRL Antenna 
Book.  Pick a load that gives a high SWR and then click on the "Tuner" 
button for the application to draw one of four different tuner 
configurations for you.  The app will tell you what the voltages across 
each component are, and also the power loss (i.e., heating effects) in 
each one.


73,
Dave   AB7E




On 12/12/2020 8:18 PM, Walter Underwood wrote:

Tuning happens at low power, so transients are small. After it is matched, why 
would the K3 ATU not be rated for full power over the full SWR range?

Other components might fail, of course. Amphenol UHF connectors are only rated 
for 500 V.

wunder
K6WRU
Walter Underwood
CM87wj


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Re: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??

[Walter Underwood]

Tuning happens at low power, so transients are small. After it is matched, why 
would the K3 ATU not be rated for full power over the full SWR range?

Other components might fail, of course. Amphenol UHF connectors are only rated 
for 500 V.

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

> On Dec 12, 2020, at 5:04 PM, Mister Mike  wrote:
> 
> That is pretty much what I thought.  I will have to read the fine manual and 
> see how the automatic tuner works.  Picked up this K3 in a swap deal a while 
> back but I am still pretty much stuck ( happily) in the Collins KWM-2/S-Line 
> “Stone Age” so I need time and patience (lots) to figure how to use these 
> marvelous appliance radios. 
> 
> In any event I have a MAC-200 made by SGC who make pretty darn good tuners 
> which I can use but that is another box to take along if I do a road trop.
> 
> 73 to all
> 
> Michael, W1RC
> 
>> On Dec 12, 2020, at 6:37 PM, donov...@erols.com wrote:
> 
>> Hi Mike,
>> 
>> Its not wise to use the K3 antenna tuner to tune a random wire.
>> A truly random wire can easily produce VSWR greater than 10:1
>> which is likely to damage the K3 tuner when running at full
>> K3 output power.
>> 
>> Its much wiser to use an external tuner with a random wire
>> 
>> 73
>> Frank
>> W3LPL
>> 
>> 
>> 
>> -Original Message-
>> From: elecraft-boun...@mailman.qth.net  On 
>> Behalf Of Mister Mike
>> Sent: Saturday, December 12, 2020 9:42 AM
>> To: elecraft@mailman.qth.net
>> Subject: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal 
>> Tuner??
>> 
>> What is the best way to do this?  I am not familiar with automatic tuners.  
> __
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[Elecraft] Elecraft CW Net Announcement

[kevinr]

Good Evening,

   Snow line keeps moving either above me or below me.  I have had 2 
inch flakes of snow falling while it is raining hard.  Then it all goes 
quiet as the snow prevails.  I have had as much as two inches of snow 
but for the moment there is less than an inch.


   The sun is less spotty this week while solar flux is at 83 sfu.  The 
recent CME was not as strong as predicted.  Sky watchers did not get the 
forecast show.  However, Jupiter and Saturn are coming into a nice 
conjunction.  Hopefully I will get a break in the clouds around the 21st 
of December.  I would limber up my Tele Vue refractor.


Please join us tomorrow on:

14050 kHz at 2200z Sunday  (2 PM PST Sunday)
 7047 kHz at 0030z Monday  (4:30 PM PST Sunday)

73,

   Kevin. KD5ONS


-


H psi = E psi

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Re: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??

[Mister Mike]

That is pretty much what I thought.  I will have to read the fine manual and 
see how the automatic tuner works.  Picked up this K3 in a swap deal a while 
back but I am still pretty much stuck ( happily) in the Collins KWM-2/S-Line 
“Stone Age” so I need time and patience (lots) to figure how to use these 
marvelous appliance radios. 

In any event I have a MAC-200 made by SGC who make pretty darn good tuners 
which I can use but that is another box to take along if I do a road trop.

73 to all

Michael, W1RC

> On Dec 12, 2020, at 6:37 PM, donov...@erols.com wrote:

> Hi Mike,
> 
> Its not wise to use the K3 antenna tuner to tune a random wire.
> A truly random wire can easily produce VSWR greater than 10:1
> which is likely to damage the K3 tuner when running at full
> K3 output power.
> 
> Its much wiser to use an external tuner with a random wire
> 
> 73
> Frank
> W3LPL
> 
> 
> 
> -Original Message-
> From: elecraft-boun...@mailman.qth.net  On 
> Behalf Of Mister Mike
> Sent: Saturday, December 12, 2020 9:42 AM
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??
> 
> What is the best way to do this?  I am not familiar with automatic tuners.  
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[Elecraft] K3 Encoder repair

[gt-i]

Hi there,
just to let you know, my SHIFT-encoder stopped working a while ago. K3
is 12 years old now . Thanks to the great support of Elecraft it is
working again now. How? They just send me new parts at no charge,
arrived here after 2 weeks and I replaced the broken one. Wonderful!
73 Gernot DF5RF


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Re: [Elecraft] No longer shows SWR/RF, Keyer/Mic does not help

[Adrian]

ALC indication in externally modulated data mode is essential to setting 
the mic gain


to a 4 bar > 5th bar flashing alc level for best data comms.



On 13/12/20 9:25 am, Jim Rhodes wrote:

Actually you can be in "Data A" or "AFSK" but not in the internally
generated data modes. Data A is basically USB with no audio processing and
AFSK is the same but LSB. So check your data mode if you  are in data. ALC
is not needed for the other 2 settings because they are generated
internally to the KX3.

On Sat, Dec 12, 2020 at 1:06 PM Grant Youngman  wrote:


Press (not press-hold) CMP.  The will change the display between SWR/RF
and CMP/ALC.  You must be in SSB (or AM)  mode, not CW, FM, or DATA.

Se the manual, on page 15.

Grant NQ5T




On Dec 12, 2020, at 1:44 PM, Greg Herman  wrote:

Still can not get SWR/RF meter to display. Stuck on CMP ALC

YouTube video is exactly what I have attempted  my toggle between mic and
cq speed looks a little different than video.

Any menu setting that might have gotten switched?

73
Greg. KC9NRO
--
Have a Great day!
Greg

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Re: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??

[donovanf]

Hi Mike, 


Its not wise to use the K3 antenna tuner to tune a random wire. 
A truly random wire can easily produce VSWR greater than 10:1 
which is likely to damage the K3 tuner when running at full 
K3 output power. 


Its much wiser to use an external tuner with a random wire 


73 
Frank 
W3LPL 






-Original Message- 
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Mister Mike 
Sent: Saturday, December 12, 2020 9:42 AM 
To: elecraft@mailman.qth.net 
Subject: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner?? 

What is the best way to do this? I am not familiar with automatic tuners. 

TIA, 

Michael, W1RC 
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Re: [Elecraft] No longer shows SWR/RF, Keyer/Mic does not help

[Jim Rhodes]

Actually you can be in "Data A" or "AFSK" but not in the internally
generated data modes. Data A is basically USB with no audio processing and
AFSK is the same but LSB. So check your data mode if you  are in data. ALC
is not needed for the other 2 settings because they are generated
internally to the KX3.

On Sat, Dec 12, 2020 at 1:06 PM Grant Youngman  wrote:

> Press (not press-hold) CMP.  The will change the display between SWR/RF
> and CMP/ALC.  You must be in SSB (or AM)  mode, not CW, FM, or DATA.
>
> Se the manual, on page 15.
>
> Grant NQ5T
>
>
>
> > On Dec 12, 2020, at 1:44 PM, Greg Herman  wrote:
> >
> > Still can not get SWR/RF meter to display. Stuck on CMP ALC
> >
> > YouTube video is exactly what I have attempted  my toggle between mic and
> > cq speed looks a little different than video.
> >
> > Any menu setting that might have gotten switched?
> >
> > 73
> > Greg. KC9NRO
> > --
> > Have a Great day!
> > Greg
>
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-- 
Jim K0XU
j...@rhodesend.net
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Re: [Elecraft] No longer shows SWR/RF, Keyer/Mic does not help

[Adrian]

If  menu > CW Weight > tap 1 for CW - SSB indicated , will then restore 
the CMP/ALC <> SWR/RF toggle as shown on video. I option 1 is CW + SSB 
(allowing sw in ssb) then No ALC view is availableand if you are getting 
a cw speed / mic gain toggle, this seems to be your position, and meter 
should show SWR/RF view only. What is your option 1 (tap 1) under CW 
Weight  menu ?





On 13/12/20 4:44 am, Greg Herman wrote:

Still can not get SWR/RF meter to display. Stuck on CMP ALC

YouTube video is exactly what I have attempted  my toggle between mic and
cq speed looks a little different than video.

Any menu setting that might have gotten switched?

73
Greg. KC9NRO

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Re: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??

[Drew AF2Z]

Very occasionally the K3 ATU will not find a good match and you may be 
able to do better by setting the tuning elements yourself. That is the 
case for my 70' endfed wire on 160m. The ATU will match it on all other 
bands though.


To tune the elements manually select "LC Set" in the Config:KAT3 menu.

73,
Drew
AF2Z



On 12/12/20 12:55, Walter Underwood wrote:

A random-length wire is usually chosen to avoid a half-wavelength on the 
frequencies you’ll be using. A more accurate term is non-resonant end-fed 
antenna.

Avoiding half-wavelengths means the impedance will not be 5000 Ω or greater, 
but it will be pretty high. Or low. The SWR on the feed line will be large and 
a high impedance feed point is pretty sensitive to surrounding objects 
(capacitance).

So:

1. Keep the coax short and low loss.
2. At the antenna, connect some sort of counterpoise or RF ground to the shield 
of the coax. This can be a ground rod, a radial system, or a wire laying on the 
ground. If you don’t do that, the RF ground will be the coax and everything 
connected to it, including your K3.
3. After that, tell the ATU to tune it and wait for it to find a solution.
4. If it won’t match, change something. Maybe the length of the wire, maybe the 
position, maybe the counterpoise.

If this is a long-term setup, a common mode choke near the rig is a good idea. 
Even with a counterpoise, some of that RF energy is going to be on the shield.

For field deployments with the KX3, I run with no feed line at all. The antenna 
wire and counterpoise wire are connected directly to the KX3 with a double 
binding post adapter.

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


On Dec 12, 2020, at 9:41 AM, Mister Mike  wrote:

What is the best way to do this?  I am not familiar with automatic tuners.

TIA,

Michael, W1RC
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Re: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??

[George Thornton]

You might take a look at the SGC company website.  They make excellent 
autotuners designed to be mounted outdoors at the antenna.  The site includes a 
number of guide articles and manuals with a wealth of information.

These tuners are fully automatic in that when you first transmit on a frequency 
the tuner automatically tunes and puts the setting for that frequency in 
memory.  

When operating these with the K3 you use the tune button (long press on the 
xmit key) and watch the SWR go down as the unit tunes.


-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Mister Mike
Sent: Saturday, December 12, 2020 9:42 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??

What is the best way to do this?  I am not familiar with automatic tuners.  

TIA,

Michael, W1RC
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Re: [Elecraft] Interfacing K2 to KPA1500?

[Don Wilhelm]

Eric,

Yes, they are wired the same - see the KIO2 manual.

73,
Don W3FPR

On 12/12/2020 2:27 PM, eric norris wrote:

Don, et al,

Can I assume the same is true of a K2/10 with the AUX IO option?  Are 
they wired the same?




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Re: [Elecraft] Interfacing K2 to KPA1500?

[Ken K6MR]

Yes.

Ken K6MR

From: eric norris via Elecraft
Sent: Saturday, December 12, 2020 11:28
To: donw...@embarqmail.com; Don 
Wilhelm; Elecraft 
Reflector; N6TV Bob 
Wilson
Subject: Re: [Elecraft] Interfacing K2 to KPA1500?

Don, et al,
Can I assume the same is true of a K2/10 with the AUX IO option?  Are they 
wired the same?

73, Eric WD6DBM



  On Sat, Dec 12, 2020 at 9:47 AM, Don Wilhelm wrote:   
Eric,

The KPA100 RS-232 data appears on pins 2 and 3 of the AUX IO connector
with pin 5 being RS-232 Signal Ground.  Chassis ground is on pin 1. See
the KPA100 manual.
DO NOT connect to any other pins of the AUX IO connector, those are
internal K2 signals to be used by external devices such as the KAT100 or
XV series transverters.

I can't help with the KPA1500 end.

73,
Don W3FPR

On 12/12/2020 8:05 AM, eric norris via Elecraft wrote:
> The KPA1500 Manual mentions using a K2 with serial interface for band data, 
> but does not show how to wire it (that I can find).  I can't find it in the 
> nabble archive either.  Does anyone know how to do this?
> Thanks and
>
> 73, Eric WD6DBM

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Re: [Elecraft] Interfacing K2 to KPA1500?

[eric norris via Elecraft]

Don, et al,
Can I assume the same is true of a K2/10 with the AUX IO option?  Are they 
wired the same?

73, Eric WD6DBM

  
 
  On Sat, Dec 12, 2020 at 9:47 AM, Don Wilhelm wrote:   
Eric,

The KPA100 RS-232 data appears on pins 2 and 3 of the AUX IO connector 
with pin 5 being RS-232 Signal Ground.  Chassis ground is on pin 1. See 
the KPA100 manual.
DO NOT connect to any other pins of the AUX IO connector, those are 
internal K2 signals to be used by external devices such as the KAT100 or 
XV series transverters.

I can't help with the KPA1500 end.

73,
Don W3FPR

On 12/12/2020 8:05 AM, eric norris via Elecraft wrote:
> The KPA1500 Manual mentions using a K2 with serial interface for band data, 
> but does not show how to wire it (that I can find).  I can't find it in the 
> nabble archive either.  Does anyone know how to do this?
> Thanks and
> 
> 73, Eric WD6DBM
  
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Re: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??

[Mike K8CN]

Mr. Mike,

Be sure you have the KAT3 internal ATU "enabled" and not bypassed, be sure
the proper antenna is selected (ANT 1 or ANT 2) for your random wire, and
press (momentary) the ATU TUNE button.  The relays will clatter a bit, and
you'll see the displayed SWR ratcheting down, maybe up for short time, as a
tuning solution is searched.  If the SWR isn't low enough for your tastes,
press the ATU TUNE button again within 5 seconds of the conclusion of the
previous attempt's end, and the ATU will try again, often with slightly
improved result.

Don't be surprised if you experience RF gremlins in your shack with a random
length wire without a counterpoise.

Mike, K8CN
(hoping to be back at NEAR-Fest next year!)



--
Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] No longer shows SWR/RF, Keyer/Mic does not help

[Grant Youngman]

Press (not press-hold) CMP.  The will change the display between SWR/RF and 
CMP/ALC.  You must be in SSB (or AM)  mode, not CW, FM, or DATA.

Se the manual, on page 15.

Grant NQ5T



> On Dec 12, 2020, at 1:44 PM, Greg Herman  wrote:
> 
> Still can not get SWR/RF meter to display. Stuck on CMP ALC
> 
> YouTube video is exactly what I have attempted  my toggle between mic and
> cq speed looks a little different than video.
> 
> Any menu setting that might have gotten switched?
> 
> 73
> Greg. KC9NRO
> -- 
> Have a Great day!
> Greg

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[Elecraft] No longer shows SWR/RF, Keyer/Mic does not help

[Greg Herman]

Still can not get SWR/RF meter to display. Stuck on CMP ALC

YouTube video is exactly what I have attempted  my toggle between mic and
cq speed looks a little different than video.

Any menu setting that might have gotten switched?

73
Greg. KC9NRO
-- 
Have a Great day!
Greg
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Re: [Elecraft] Interfacing K2 to KPA1500?

[Ken K6MR]

Use the Kenwood diagram in the KPA manual.   Use the pinout in the K2 manual 
for the serial port and wire accordingly.  3 wires (TXD, RXD, GND) is all you 
need from the K2.  Then select SERIAL as the radio type in the KPA.  You may 
also need RADIO POLL to be turned on.

Ken K6MR

From: eric norris via Elecraft
Sent: Saturday, December 12, 2020 05:07
To: Elecraft Reflector
Subject: [Elecraft] Interfacing K2 to KPA1500?

The KPA1500 Manual mentions using a K2 with serial interface for band data, but 
does not show how to wire it (that I can find).  I can't find it in the nabble 
archive either.  Does anyone know how to do this?
Thanks and

73, Eric WD6DBM


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Re: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??

[Walter Underwood]

A random-length wire is usually chosen to avoid a half-wavelength on the 
frequencies you’ll be using. A more accurate term is non-resonant end-fed 
antenna.

Avoiding half-wavelengths means the impedance will not be 5000 Ω or greater, 
but it will be pretty high. Or low. The SWR on the feed line will be large and 
a high impedance feed point is pretty sensitive to surrounding objects 
(capacitance).

So:

1. Keep the coax short and low loss.
2. At the antenna, connect some sort of counterpoise or RF ground to the shield 
of the coax. This can be a ground rod, a radial system, or a wire laying on the 
ground. If you don’t do that, the RF ground will be the coax and everything 
connected to it, including your K3.
3. After that, tell the ATU to tune it and wait for it to find a solution.
4. If it won’t match, change something. Maybe the length of the wire, maybe the 
position, maybe the counterpoise. 

If this is a long-term setup, a common mode choke near the rig is a good idea. 
Even with a counterpoise, some of that RF energy is going to be on the shield.

For field deployments with the KX3, I run with no feed line at all. The antenna 
wire and counterpoise wire are connected directly to the KX3 with a double 
binding post adapter.

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

> On Dec 12, 2020, at 9:41 AM, Mister Mike  wrote:
> 
> What is the best way to do this?  I am not familiar with automatic tuners.  
> 
> TIA,
> 
> Michael, W1RC
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Re: [Elecraft] Interfacing K2 to KPA1500?

[Don Wilhelm]

Eric,

The KPA100 RS-232 data appears on pins 2 and 3 of the AUX IO connector 
with pin 5 being RS-232 Signal Ground.  Chassis ground is on pin 1. See 
the KPA100 manual.
DO NOT connect to any other pins of the AUX IO connector, those are 
internal K2 signals to be used by external devices such as the KAT100 or 
XV series transverters.


I can't help with the KPA1500 end.

73,
Don W3FPR

On 12/12/2020 8:05 AM, eric norris via Elecraft wrote:

The KPA1500 Manual mentions using a K2 with serial interface for band data, but 
does not show how to wire it (that I can find).  I can't find it in the nabble 
archive either.  Does anyone know how to do this?
Thanks and

73, Eric WD6DBM

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[Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??

[Mister Mike]

What is the best way to do this?  I am not familiar with automatic tuners.  

TIA,

Michael, W1RC
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Re: [Elecraft] Oscilloscope recs

[Rich NE1EE]

On 2020-12-12 11:16:-0500, Kevin Cozens wrote:
>On 2020-12-12 8:06 a.m., Rich NE1EE wrote:
>>Another round of spin the wheel at Rigol turned up this trio
>>UltraScope(PC)Installer_00.01.01.07.zip
>>UltraStation setup.zip
>>Ultra Sigma_00_01_06_01.zip
>>No notes about which to choose or why.
>
>I'm not sure about UltraStation. I installed UltraSigma and UltraScope. 
>UltraSigma appears to be the "driver" which talks with the scope while 
>UltraScope is the graphical front end for operating the scope.

Yes. I copied the wrong filename to the email in haste. I installed UltraSigma 
0.1.6.1. I agree that it is a driver of sorts. All my comments re r-click apply 
to it. But my UltraScope, though it connects, won't actually talk with the 
DS1202 reliably

After every UltraScope action, some of which work (such as Run|Stop), the scope 
is disconnected. The Virtual Panel simply does not work. Yet UltraSigma seems 
to always be connected and the SCPI commands work. 

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Re: [Elecraft] KPA500 and KAT500 Enhanced mode frequency tracking

[Lyn Norstad]

Andy -

I for one would love to see it.  I need to track an IC-7300.

Thx.
73
Lyn, W0LEN


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Andy Durbin
Sent: Friday, December 11, 2020 6:31 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] KPA500 and KAT500 Enhanced mode frequency tracking

"the transceiver still calls for the short burst of RF prior to transmitting
at full power."

Not sure I understand this.  If you implement it correctly no RF TX is
required.  I see Dick suggested you contact me.  I'll be happy to share info
on my controller design.  No RF TX required for my controller to keep KAT500
and KPA500 tracking my TS-590S TX frequency.

Andy, k3wyc
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Re: [Elecraft] Oscilloscope recs

[Kevin Cozens]

On 2020-12-12 8:06 a.m., Rich NE1EE wrote:

Another round of spin the wheel at Rigol turned up this trio
UltraScope(PC)Installer_00.01.01.07.zip
UltraStation setup.zip
Ultra Sigma_00_01_06_01.zip

No notes about which to choose or why.


I'm not sure about UltraStation. I installed UltraSigma and UltraScope. 
UltraSigma appears to be the "driver" which talks with the scope while 
UltraScope is the graphical front end for operating the scope.


--
Cheers!

Kevin.

http://www.ve3syb.ca/   | "Nerds make the shiny things that
https://www.patreon.com/KevinCozens | distract the mouth-breathers, and
| that's why we're powerful"
Owner of Elecraft K2 #2172  |
#include  | --Chris Hardwick
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Re: [Elecraft] KX3 no longer shows SWR/RF

[Adrian]

As a followup the CMP bttn will toggle to CMP/ALC display for the 
purpose of adjusting CMP,


as is the purpose of pressing CMP. However the CMP/ALC display cannot be 
maintained and return to


normal VFO-B display in this procedure.


On 13/12/20 12:36 am, Bill Frantz wrote:

Press the CMP button to toggle.

73 Bill AE6JV

On 12/12/20 at 9:09 AM, kc9...@gmail.com (Greg Herman) wrote:


Help. Not sure what happened but my display no longer displays SWR/ RF, it
displays CMP. ALC

Taping the mic gain cq speed does not toggle it?

If I switch modes to CW or DATA , then SWR/RF Will display.

Goes away on USB/LSB voice mode

---
Bill Frantz| "The only thing we have to   | Periwinkle
(408)348-7900  | fear is fear itself." - FDR  | 150 Rivermead Rd #235
www.pwpconsult.com | Inaugural address, 3/4/1933  | Peterborough, NH 03458

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Re: [Elecraft] KX3 no longer shows SWR/RF

[Adrian]

No, The CMP button just togles CMP and VFO-B display at screen base.


The correct method is to depress (click) the Keyer/Mic knob as a switch 
as displayed here ;



https://youtu.be/JHHhy6c50J4 


On 13/12/20 12:36 am, Bill Frantz wrote:

Press the CMP button to toggle.

73 Bill AE6JV

On 12/12/20 at 9:09 AM, kc9...@gmail.com (Greg Herman) wrote:


Help. Not sure what happened but my display no longer displays SWR/ RF, it
displays CMP. ALC

Taping the mic gain cq speed does not toggle it?

If I switch modes to CW or DATA , then SWR/RF Will display.

Goes away on USB/LSB voice mode

---
Bill Frantz| "The only thing we have to   | Periwinkle
(408)348-7900  | fear is fear itself." - FDR  | 150 Rivermead Rd #235
www.pwpconsult.com | Inaugural address, 3/4/1933  | Peterborough, NH 03458

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Re: [Elecraft] KX3 no longer shows SWR/RF

[Bill Frantz]

Press the CMP button to toggle.

73 Bill AE6JV

On 12/12/20 at 9:09 AM, kc9...@gmail.com (Greg Herman) wrote:

> Help. Not sure what happened but my display no longer displays SWR/ RF, it
> displays CMP. ALC
> 
> Taping the mic gain cq speed does not toggle it?
> 
> If I switch modes to CW or DATA , then SWR/RF Will display.
> 
> Goes away on USB/LSB voice mode

---
Bill Frantz| "The only thing we have to   | Periwinkle
(408)348-7900  | fear is fear itself." - FDR  | 150 Rivermead Rd #235
www.pwpconsult.com | Inaugural address, 3/4/1933  | Peterborough, NH 03458

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[Elecraft] KX3 no longer shows SWR/RF

[Greg Herman]

Help. Not sure what happened but my display no longer displays SWR/ RF, it
displays CMP. ALC

Taping the mic gain cq speed does not toggle it?

If I switch modes to CW or DATA , then SWR/RF Will display.

Goes away on USB/LSB voice mode

???
73
Greg- KC9NRO
-- 
Have a Great day!
Greg
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Re: [Elecraft] Oscilloscope recs

[Rich NE1EE]

On 2020-12-11 18:33:+, Louandzip via Elecraft wrote:
>I opted for a Rigol DS1202Z-E.�  

I pursued getting the DS1202 to work with USB. I have in place a grep process 
to rename files as they come off the Rigol, because if the timestamp issue.

The Rigol website is anything but clear, and I didn't find much on fora, 
either. The Rigol websites
https://rigol.force.com/support/s/
https://rigol.force.com/support/s/article/DS1202Z-E-Unable-to-Connect-to-UltraScope

suggested to me that I needed
Ultrascope for DS1000E Series.zip

It would not connect.
Further searches turned up that I needed to install
ni-visa_20.0_online_repack2.exe
massive...and helped, but still no joy.

Another round of spin the wheel at Rigol turned up this trio
UltraScope(PC)Installer_00.01.01.07.zip
UltraStation setup.zip
Ultra Sigma_00_01_06_01.zip

No notes about which to choose or why.

I started with the UltraStation setup.zip.
It seemed to be headed in the right direction.

I edited the Init file as suggested. Not sure if I needed to, but figured it 
could not hurt.
I downloaded
MSO1000Z_DS1000Z_ProgrammingGuide_EN.pdf
and there found this
"(5) Control the instrument remotely
Right click the resource name "MSO1104Z 
(USB0::0x1AB1::0x04CE::DS1ZD17081::INSTR)" and select "SCPI Panel Control" 
to turn on the remote command control panel through which you can send commands 
and read data."

the same r-click shows Options, which you can follow to a Print Screen button. 
For me, by default, it saved the screen in bmp, jpg, and png.

At last I was on my way...
Clicking the wrench gets you eventually to a place where you can save the 
screen. But that did not work.

Ultrascope never did work, though after installing the NI package and 
UltraStation, it would then connect. As soon as I try to use it, it 
disconnects. It will connect again, but with the same result.

I don't see a command or a way to change the date on the DS1202 yet, but with 
this method, it is not needed. I will also explore downloading data files using 
UltraStation. If you want to contact me off list, that is fine.

I also found a firmware update, and checking, found that my scope was slightly 
out of date. I followed the directions and upgraded. It was successful, with 
ONE CAVEAT:

Don't hit OK on the scope at steps 5 and 11.
...\DS1000Z-E Firmware 6.2.0.1\DS1000Z-E(ARM)Update\DS1000Z-E Upgrade 
Instructions.txt
5. When the interface displays "Upgrade finished!", restart the instrument. 
DO NOT press OK on the scope!!! Power off. Remove USB drive. Power on.

Del the upgrade file.
Copy the new one to USB drive.

11. When the interface displays "Upgrade finished!", restart the 
instrument.  DO NOT press OK on the scope!!! Power off. Remove USB drive. Power 
on.
Del the upgrade file on USB drive.

~R~
72/73 de Rich NE1EE
The Dusty Key
On the banks of the Piscataqua

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[Elecraft] Interfacing K2 to KPA1500?

[eric norris via Elecraft]

The KPA1500 Manual mentions using a K2 with serial interface for band data, but 
does not show how to wire it (that I can find).  I can't find it in the nabble 
archive either.  Does anyone know how to do this?
Thanks and

73, Eric WD6DBM

 
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