Re: [Elecraft] W2 control wire length?

[Victor Rosenthal 4X6GP]

I don't know, but it would be easy to try with a coil of Ethernet cable 
and some resistors.
The question is, why do you want to do this? You can easily compute the 
real SWR and power at the feedpoint based on the reading in the station 
and the transmission line loss from the cable specs.


73,
Victor, 4X6GP
Rehovot, Israel
formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/

On 20/03/2023 18:45, K 5 R H D Randy Diddel wrote:

Hi,

I have a W2 with an HF coupler and I am entertaining the idea of putting it
out in a waterproof container just before the feed-point of my antenna
(non-resonant vertical). The run is about 75’. Does anyone know if there is
a limit on the cable length? If so, what is it?

Thanks and 73.
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Re: [Elecraft] W2 Software

[John Chappell G3XRJ]

thanks Michael.
Its the setup screen in W2 that wont open.
All other programs run without COM port issue.
I've tried 'compatibility' mode etc to no avail.

73
John G3XRJ

On 19/10/2022 23:15, Michael Walker wrote:

Hi John

I have used Com ports on Win 11 without issue.  If you have one, you 
will want to check in device manager and see if you see the port.


73, Mike va3mw


On Wed, Oct 19, 2022 at 5:28 PM John Chappell G3XRJ  
wrote:


Can anybody confirm that Elecraft W2 software runs on a Windows 11 PC.
Mine is fine on Win10 PC but on Win11 PC the setup screen wont
open to
choose COM Port.

Thanks 73
John G3XRJ


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Re: [Elecraft] W2 Software

[Michael Walker]

Hi John

I have used Com ports on Win 11 without issue.  If you have one, you will
want to check in device manager and see if you see the port.

73, Mike va3mw


On Wed, Oct 19, 2022 at 5:28 PM John Chappell G3XRJ  wrote:

> Can anybody confirm that Elecraft W2 software runs on a Windows 11 PC.
> Mine is fine on Win10 PC but on Win11 PC the setup screen wont open to
> choose COM Port.
>
> Thanks 73
> John G3XRJ
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Re: [Elecraft] W2 directional coupler

[Larry Shapiro]

I might..
Will look when I get home on Friday,
Larry k6ro

www.LSRarecoins.com
310-710-2869

> On Aug 16, 2022, at 3:28 PM, Ronnie Hull  wrote:
> 
> Anyone have a E850370 Directional Coupler for 144/450 mhz they will part 
> with?
> Please let me know if you do
> 
> Thanks and 73
> 
> Ron W5SUM
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Re: [Elecraft] W2

[David Herring]

Just to wrap up this question for the benefit of anyone else who is interested 
or may search for this later…

Jack’s response prompted me to go back and take a second look at the schematics 
for the couplers. Somehow I missed this the first time through, but it would 
appear that the coupler will provide a short to ground for a DC bias voltage by 
way of the secondary winding in T1.

So I’m going to take “no” for an answer here. ;-)  I don’t think the HF 
couplers will pass a DC bias voltage on through like I had hoped.

73,
David - N5DCH



>> 
>> 
>>> On Jun 8, 2021, at 6:25 PM, Jack Brindle  wrote:
>>> 
>>> I believe the answer is yes. The schematics for the W2 and couplers are in 
>>> the manual.
>>> 
>>> 73,
>>> Jack, W6FB
>>> 
>>> 
 On Jun 8, 2021, at 5:00 PM, David Herring  wrote:
 
 Can anyone say if the directional couplers for the W2 will pass a DC bias 
 voltage along the coax? 
 
 73,
 David - N5DCH
 
 
 
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>>> 
>> 
> 

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Re: [Elecraft] W2

[Jack Brindle via Elecraft]

I believe the answer is yes. The schematics for the W2 and couplers are in the 
manual.

73,
Jack, W6FB


> On Jun 8, 2021, at 5:00 PM, David Herring  wrote:
> 
> Can anyone say if the directional couplers for the W2 will pass a DC bias 
> voltage along the coax? 
> 
> 73,
> David - N5DCH
> 
> 
> 
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Re: [Elecraft] W2 Issue

[Jack Brindle via Elecraft]

Bill;

R22 in the sensors is a sense resistor that tells the controller which sensor 
is attached. It is a very low stress part that sees at most 5 volts at very low 
current. R22 is different for each sensor - the values shown in the schematic 
are not necessarily correct. Also, these are precision 1% resistors. With that 
in mind, the values are:
2KW HF Sensor, R22 is a 2K ohm 1% SMT resistor. 
200W HF Sensor, R22 is a 1KW 1% SMT resistor.
200W VHF Sensor, R22 is a 4.7K 1% SMT resistor.

We need to be careful what we might plug the sensor cable into. The standard 
box would not stress the resistor to the degree that the resistor blew, 
especially since that connector also has a ground attached as well. If it were 
to be plugged into something like an ethernet adapter, I would expect the 
sensor not to survive since those pins connect to entirely different signals 
with different characteristics. 

73,
Jack, W6FB


> On May 20, 2021, at 6:12 AM, William Carpenter  wrote:
> 
> My W2 wattmeter suddenly stopped working properly this morning along with
> that dreaded smoke smell.  The smell came from the 2KW sensor unit and upon
> inspection R22 which is a 1K in the sense circuit is burned.  Of course
> it's surface mount but I think I can replace it OK.  If not with another
> surface mount I could possibly be able to mount a leaded resistor.  I was
> operating at 100 watts on 20 meters into a low SWR when this happened.  Has
> anyone else had this happen?  What could have caused this?  I have also
> contacted Elecraft tech support about this but I know there are plenty of
> experts on this forum too!
> 
> 73, Bill NZ0T
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Re: [Elecraft] W2 wattmeter

[Don Wilhelm]

Joe,

The telling answer is in your statement "the radio has an internal ATU".
The radio is showing the SWR between the radio and the ATU.
The wattmeter is showing you the SWR after the ATU - in other words, the 
SWR of the untuned antenna.  So there may be nothing wrong.


Connect a dummy load to the wattmeter output and see what that reads - 
should be 1.0.


73,
Don W3FPR

On 8/29/2020 1:29 PM, Joseph McIntire wrote:

My wattmeter  seems to be displaying  the wrong SWR on the LEDs. I bought a 
digital display unit on line. The radio has an internal ATU. The radio says 
tuned 1.0 - 1. when I key the radio says 1.0 - 1 and the DDU says .16 SWR but 
the LEDs show 1.5 - 1. So if I hit 1.2 - 1 the LEDs all flash so I can not tell 
at a glance if the SWR is good. So I was wondering if any one had seen this or 
know  if it can be  fixed without sending it in. I already  replaced the 
coupler do to i thought that was the problem.

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Re: [Elecraft] W2 SWR Alarm Function - How to set?

[Andy Wood]

I tried this again with exactly the same setup and now it works. I still
don't know what the original problem was as all the hardware is identical.

Andy  VK4KY



--
Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] W2 connection issues

[Mike Flowers]

It may be worth checking this about USB port power management.   This
feature has been known to cause difficulties.

https://helpdeskgeek.com/how-to/prevent-windows-from-powering-off-usb-device
/

- 73 and good DX de Mike, K6MKF, Past President - NCDXC 

> -Original Message-
> From: elecraft-boun...@mailman.qth.net 
> On Behalf Of k...@kq8m.com
> Sent: Thursday, March 07, 2019 8:42 AM
> To: 'Jim Spears' ; elecraft@mailman.qth.net
> Subject: Re: [Elecraft] W2 connection issues
> 
> Hi Jim,
> 
> If you figure it out please let us know. I have the same problem with a
Win
> 7 machine. Everytime I start the software I must turn the W2 off then back
on for
> it to be detected even though the software sees the com port.
> 
> 73
> Tim, KQ8M
> k...@kq8m.com
> 
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Spears
> Sent: Thursday, March 7, 2019 08:34
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] W2 connection issues
> 
> I have two W2 units that I use with different K3's and different W10
computers.
> One of them is reluctant to connect when I start up the W2 utility
program.  So I
> power the W2 off and back on with the utility program active and it
connects just
> fine.  This is consistent behavior.
> 
> 
> 
> The other seems to be able to connect just fine.  I have not spent any
time trying
> to figure out why one requires the off/on sequence but just live with it.
> 
> 
> 
> There may something in the physical connection to the computer.  i.e.
> through a USB port, through a COM port, etc.
> 
> 
> 
> Jim/N1NK
> 
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Re: [Elecraft] W2 connection issues

[kq8m]

Hi Jim,

If you figure it out please let us know. I have the same problem with a Win
7 machine. Everytime I start the software I must turn the W2 off then back
on for it to be detected even though the software sees the com port.

73
Tim, KQ8M
k...@kq8m.com

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Spears
Sent: Thursday, March 7, 2019 08:34
To: elecraft@mailman.qth.net
Subject: [Elecraft] W2 connection issues

I have two W2 units that I use with different K3's and different W10
computers.  One of them is reluctant to connect when I start up the W2
utility program.  So I power the W2 off and back on with the utility program
active and it connects just fine.  This is consistent behavior.

 

The other seems to be able to connect just fine.  I have not spent any time
trying to figure out why one requires the off/on sequence but just live with
it.

 

There may something in the physical connection to the computer.  i.e.
through a USB port, through a COM port, etc.  

 

Jim/N1NK

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Re: [Elecraft] W2 Software

[Joe]

Now I'm confused.  The web site says that the W2 Current Production 
Firmware is V1.00, 4-12-2010.


When I look at my remote station using the W2 Interface Ver 1.12.1.18 
W4SMT software, the bottom of the screen says "Connected to W2 ver 1.07" 
 Why the difference?


K1ike, Joe
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Re: [Elecraft] W2 Software

[kq8m]

Thank you, David.

That is exactly what I am looking for. I am also thinking of writing a little 
utility to display the data.

On that page is a link that is supposed to go to a mod for the W2 but it goes 
to the serial interface commands file. I think Elecraft is having trouble with 
their new design. Oh well, they will get it fixed.

73
Tim, KQ8M
k...@kq8m.com

-Original Message-
From: David Fleming [mailto:df...@yahoo.com] 
Sent: Saturday, October 27, 2018 17:01
To: elecraft@mailman.qth.net; k...@kq8m.com
Subject: Re: [Elecraft] W2 Software

Hello Tim,

You are right. The W2 Utility is used mainly for updating the firmware. I 
believe you are looking for the W2 Interface software. The new web site doesn't 
appear to have a link on the software page, but by typing "W2" in the Search 
box I was able to find it. Scroll about half way down the page to find the W2 
Interface software.

https://elecraft.com/pages/w2-wattmeter-swr-bridge-software

Best 73,

David, W4SMT


On Friday, October 26, 2018, 4:58:31 PM EDT,  wrote: 


Thanks to all who answered so quickly. I misunderstood what was what. I was 
under the impression that the utility was mainly for updating the firmware. I 
was wrong. Thanks for setting me straight.

73
Tim, KQ8M
k...@kq8m.com

-Original Message-
From: Don Wilhelm [mailto:donw...@embarqmail.com] 
Sent: Friday, October 26, 2018 16:20
To: k...@kq8m.com; elecraft@mailman.qth.net
Subject: Re: [Elecraft] W2 Software

Tim,

It is on the new Elecraft website.
Go to www.elecraft.com and click on SUPPORT
Then on the page that opens, click on Firmware and Software
On that page, click on Test Equipment Line Firmware and Software
Lastly click on W2 Firmware and Utility.  The Utility link is located 
near the bottom of that page.

73,
Don W3FPR

On 10/26/2018 3:58 PM, k...@kq8m.com wrote:
> Hi,
> 
>  
> 
> I have been trying ot find the software for the W2 computer control. I found
> the app to update the firmware but cannot find the control software. Does
> anyone know where I can find it?

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Re: [Elecraft] W2 Software

[David Fleming via Elecraft]

Hello Tim,

You are right. The W2 Utility is used mainly for updating the firmware. I 
believe you are looking for the W2 Interface software. The new web site doesn't 
appear to have a link on the software page, but by typing "W2" in the Search 
box I was able to find it. Scroll about half way down the page to find the W2 
Interface software.

https://elecraft.com/pages/w2-wattmeter-swr-bridge-software

Best 73,

David, W4SMT


On Friday, October 26, 2018, 4:58:31 PM EDT,  wrote: 


Thanks to all who answered so quickly. I misunderstood what was what. I was 
under the impression that the utility was mainly for updating the firmware. I 
was wrong. Thanks for setting me straight.

73
Tim, KQ8M
k...@kq8m.com

-Original Message-
From: Don Wilhelm [mailto:donw...@embarqmail.com] 
Sent: Friday, October 26, 2018 16:20
To: k...@kq8m.com; elecraft@mailman.qth.net
Subject: Re: [Elecraft] W2 Software

Tim,

It is on the new Elecraft website.
Go to www.elecraft.com and click on SUPPORT
Then on the page that opens, click on Firmware and Software
On that page, click on Test Equipment Line Firmware and Software
Lastly click on W2 Firmware and Utility.  The Utility link is located 
near the bottom of that page.

73,
Don W3FPR

On 10/26/2018 3:58 PM, k...@kq8m.com wrote:
> Hi,
> 
>  
> 
> I have been trying ot find the software for the W2 computer control. I found
> the app to update the firmware but cannot find the control software. Does
> anyone know where I can find it?

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Re: [Elecraft] W2 Software

[kq8m]

Thanks to all who answered so quickly. I misunderstood what was what. I was 
under the impression that the utility was mainly for updating the firmware. I 
was wrong. Thanks for setting me straight.

73
Tim, KQ8M
k...@kq8m.com

-Original Message-
From: Don Wilhelm [mailto:donw...@embarqmail.com] 
Sent: Friday, October 26, 2018 16:20
To: k...@kq8m.com; elecraft@mailman.qth.net
Subject: Re: [Elecraft] W2 Software

Tim,

It is on the new Elecraft website.
Go to www.elecraft.com and click on SUPPORT
Then on the page that opens, click on Firmware and Software
On that page, click on Test Equipment Line Firmware and Software
Lastly click on W2 Firmware and Utility.  The Utility link is located 
near the bottom of that page.

73,
Don W3FPR

On 10/26/2018 3:58 PM, k...@kq8m.com wrote:
> Hi,
> 
>   
> 
> I have been trying ot find the software for the W2 computer control. I found
> the app to update the firmware but cannot find the control software. Does
> anyone know where I can find it?

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Re: [Elecraft] W2 Software

[Don Wilhelm]

Tim,

It is on the new Elecraft website.
Go to www.elecraft.com and click on SUPPORT
Then on the page that opens, click on Firmware and Software
On that page, click on Test Equipment Line Firmware and Software
Lastly click on W2 Firmware and Utility.  The Utility link is located 
near the bottom of that page.


73,
Don W3FPR

On 10/26/2018 3:58 PM, k...@kq8m.com wrote:

Hi,

  


I have been trying ot find the software for the W2 computer control. I found
the app to update the firmware but cannot find the control software. Does
anyone know where I can find it?

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Re: [Elecraft] W2 Software

[Grant Youngman]

It’s under Test Equipment on the Support page.

Grant NQ5T
K3 #2091 KX3 #8342

> On Oct 26, 2018, at 3:58 PM,   wrote:
> 
> Hi,
> 
> 
> 
> I have been trying ot find the software for the W2 computer control. I found
> the app to update the firmware but cannot find the control software. Does
> anyone know where I can find it?
> 
> 
> 
> Thank you and 73
> 
> Tim, KQ8M
> 
> k...@kq8m.com
> 
> 
> 
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Re: [Elecraft] W2 Sensor issue

[Bill Johnson]

I would suggest you may have a cable issue to test first. Try reconnecting the 
connectors.  And if you test at the site.  There are so many variables, we 
humans cannot help with being on site.  Take a few cell photos and then post to 
get help.

73,
Bill
K9YEQ

https://wrj-tech.com/

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Michael Walker
Sent: Sunday, July 15, 2018 8:23 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] W2 Sensor issue

I wonder if anyone has seen this before.

I was chasing a problem with high SWR on my 2K HF probe where on the radio, the 
antenna SWR reads 1.3:1 without the SWR probe installed and 2.9:1 with it 
installed.

Yes, I have changed my RG214 jumper cables to a few others.  I even replace the 
probe with a double female couple and the SWR dropped down to what I expected 
(about 1.3:1).

It is only on 6M that it has bad readings.   This is at my remote base, and
as I right this, I should have tested on a dummy load, but that will have to 
happen on my next trip.

So, as I asked before, anyone else see it fail only on 6m?

Mike va3mw
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Re: [Elecraft] W2 wattmeter maximum Cat5 cable length

[Jack Brindle via Elecraft]

The cable is indeed not cat-5, but rather 8 individual wires that carry power 
and ground one way (to the box) and analog sensor signals back. The twist 
action in CAT-5 does not help here at all.
The things to watch for are signal loss due to resistance (shouldn’t be too 
bad, depending on the wire and length), and RF pickup. The latter can lead to 
bad and erratic readings.
The best advice is to keep the cable as short as possible.

73,
Jack, W6FB


> On Jul 10, 2018, at 12:06 PM, Dick Green WC1M  wrote:
> 
> Thanks. First real info I've gotten. I said Cat5 because the documentation 
> mentions it and I believe it says you can use a standard Ethernet cable.
> 
> I haven't taken a close look at the coupler circuitry. If it's like most 
> remote couplers I've seen, a too-long cable can cause a drop in the DC 
> voltages that carry the forward and reflected power signals. If the coupler 
> does a conversion to digital, then the cable length wouldn't be an issue. But 
> that sounds pretty fancy!
> 
> 73, Dick WC1M
> 
> -Original Message-
> From: Jeff KC9WSJ  
> Sent: Tuesday, July 10, 2018 12:47 PM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] W2 wattmeter maximum Cat5 cable length
> 
> the standard cable is not Cat5, it's just a ribbon cable with RJ45's (I
> think?) at each end.
> Cat5 should work, though, and I'd be surprised if anything less than ~50ft+ 
> would be an issue.
> 
> --
> Jeff KC9WSJ 
> 
> On Mon, 2018-07-09 at 23:51 -0400, Dick Green wrote:
>> The W2 wattmeter comes with a 5-foot Cat5 cable to connect the coupler 
>> to the display unit. I need to use a longer cable, maybe 10-15 feet. 
>> I’ve searched the reflector archives and web for any information about 
>> the max
>> Cat5 cable length but haven’t found any.
>> 
>> Does anyone know? Does the calibration routine in the W2 Utility 
>> compensate for different cable lengths?
>> 
>> 73, Dick WC1M
> 
> 
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Re: [Elecraft] W2 wattmeter maximum Cat5 cable length

[Dick Green WC1M]

Thanks. First real info I've gotten. I said Cat5 because the documentation 
mentions it and I believe it says you can use a standard Ethernet cable.

I haven't taken a close look at the coupler circuitry. If it's like most remote 
couplers I've seen, a too-long cable can cause a drop in the DC voltages that 
carry the forward and reflected power signals. If the coupler does a conversion 
to digital, then the cable length wouldn't be an issue. But that sounds pretty 
fancy!

73, Dick WC1M

-Original Message-
From: Jeff KC9WSJ  
Sent: Tuesday, July 10, 2018 12:47 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] W2 wattmeter maximum Cat5 cable length

the standard cable is not Cat5, it's just a ribbon cable with RJ45's (I
think?) at each end.
Cat5 should work, though, and I'd be surprised if anything less than ~50ft+ 
would be an issue.

--
Jeff KC9WSJ 

On Mon, 2018-07-09 at 23:51 -0400, Dick Green wrote:
> The W2 wattmeter comes with a 5-foot Cat5 cable to connect the coupler 
> to the display unit. I need to use a longer cable, maybe 10-15 feet. 
> I’ve searched the reflector archives and web for any information about 
> the max
> Cat5 cable length but haven’t found any.
> 
> Does anyone know? Does the calibration routine in the W2 Utility 
> compensate for different cable lengths?
> 
> 73, Dick WC1M


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Re: [Elecraft] W2 wattmeter maximum Cat5 cable length

[Jeff KC9WSJ]

the standard cable is not Cat5, it's just a ribbon cable with RJ45's (I
think?) at each end.
Cat5 should work, though, and I'd be surprised if anything less than ~50ft+
would be an issue.

-- 
Jeff KC9WSJ 

On Mon, 2018-07-09 at 23:51 -0400, Dick Green wrote:
> The W2 wattmeter comes with a 5-foot Cat5 cable to connect the coupler to
> the display unit. I need to use a longer cable, maybe 10-15 feet. I’ve
> searched the reflector archives and web for any information about the max
> Cat5 cable length but haven’t found any.
> 
> Does anyone know? Does the calibration routine in the W2 Utility
> compensate for different cable lengths?
> 
> 73, Dick WC1M
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Re: [Elecraft] W2 failure

[Michael Eberle]

Seems like I had a power connector issue with mine once. Using a 
different power cable took care of it.
One of the sensor lights should be lit.  If no sensors are connected the 
S1 and S2 lights will alternately flash.


Mike
KI0HA

On 4/13/2018 17:59, Chris Tate - N6WM wrote:

Ya.. it doesn't even get that far..

-Original Message-
From: Bill Johnson 
Sent: Friday, April 13, 2018 3:13 PM
To: Chris Tate - N6WM ; elecraft@mailman.qth.net
Subject: RE: W2 failure

Do you have the correct sensor on?

72 & 73,
Bill
K9YEQ
FT'er for K2, KX1, KX3, KXPA100,  KAT500, W2, etc.

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Chris Tate - N6WM
Sent: Friday, April 13, 2018 5:07 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] W2 failure

I have a W2 wattmeter that seems to have failed.  its powers up (leds flash on 
for a moment) but then almost immediately shuts down.  any thoughts on what may 
be on the blink or something that I can look at?

Chris
N6WM
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Re: [Elecraft] W2 failure

[Chris Tate - N6WM]

Ya.. it doesn't even get that far..

-Original Message-
From: Bill Johnson  
Sent: Friday, April 13, 2018 3:13 PM
To: Chris Tate - N6WM ; elecraft@mailman.qth.net
Subject: RE: W2 failure

Do you have the correct sensor on?

72 & 73,
Bill
K9YEQ
FT'er for K2, KX1, KX3, KXPA100,  KAT500, W2, etc. 

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Chris Tate - N6WM
Sent: Friday, April 13, 2018 5:07 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] W2 failure

I have a W2 wattmeter that seems to have failed.  its powers up (leds flash on 
for a moment) but then almost immediately shuts down.  any thoughts on what may 
be on the blink or something that I can look at?

Chris
N6WM
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Re: [Elecraft] W2 failure

[Bill Johnson]

Do you have the correct sensor on?

72 & 73,
Bill
K9YEQ
FT'er for K2, KX1, KX3, KXPA100,  KAT500, W2, etc. 

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Chris Tate - N6WM
Sent: Friday, April 13, 2018 5:07 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] W2 failure

I have a W2 wattmeter that seems to have failed.  its powers up (leds flash on 
for a moment) but then almost immediately shuts down.  any thoughts on what may 
be on the blink or something that I can look at?

Chris
N6WM
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Re: [Elecraft] W2 for sale

[Thaire Bryant]

The watt meter has been sold.

 

Thaire  W2APF

 

H: 603-447-2376

C: 508-245-3522

Skype: camp.comfort

 

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Re: [Elecraft] W2 Wattmeter 440 band accuracy?

[Don Wilhelm]

Michael,

In general, digital wattmeters have the same accuracy at any point on 
the scale - unlike analog wattmeters for which the accuracy is stated as 
a percentage of the full scale reading.  On a 20 watt scale, a 25% error 
would be up to 4 watts!


You might want to look at the specs for that 440 MHz transmitter as 
well.  If it 2.6 dB or so, getting 2.8 watts out for a 5 watt setting 
may be what you can expect.


73,
Don W3FPR

On 7/30/2017 4:59 PM, Michael via Elecraft wrote:

OK so I am trying to measure around 5 Watts or so on the W2's 20 Watt
scale.  The spec's for the W2 directional couplers are listed at 0.5 dB
accuracy.  Is this anywhere or just at full scale? How much could it  be off at
only 25% of full scale?
  
Trying to decide if the 2.8 Watts I am reading at 440 MHz on high power is

too low with a spec of 5 Watts output!  If it is I can send it back to the
place of purchase to be checked and exchanged if necessary.
  
There seems to be no problem on the 2 Meter band at only 25 % of scale (5

Watts) readingjust on 440.
  
Michael

n2zdb
  
  
  
  
  
  
In a message dated 07/30/2017 12:36:49 P.M. Eastern Daylight Time,

elecraftcov...@gmail.com writes:

  



The accuracy of a Bird Model 43 is +/- 5% of full scale.  The meter  scale
is not
linear and produces the best read accuracy in the bottom portion of the
meter's
scale.


There are numerous watt meters on the market today that are more  accurate.
  



FWIW  73!


Ken Kopp - K0PP


--
On Sun, Jul 30, 2017 at 9:23 AM, Michael Walker 
wrote:

The  only way to get the answer you wish is to compare it to a bench
standard  like a bird watt meter.

Beyond that you are just guessing.   Sorry

Mike va3mw


On Sun, Jul 30, 2017 at 11:18 AM,  Michael via Elecraft <
elecraft@mailman.qth.net>  wrote:


Measurement is in analog mode.should have made that  clear or not even
mentioned a digital radio!

  Michael





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Re: [Elecraft] W2 Wattmeter 440 band accuracy?

[Michael via Elecraft]

OK so I am trying to measure around 5 Watts or so on the W2's 20 Watt  
scale.  The spec's for the W2 directional couplers are listed at 0.5 dB  
accuracy.  Is this anywhere or just at full scale? How much could it  be off at 
only 25% of full scale?
 
Trying to decide if the 2.8 Watts I am reading at 440 MHz on high power is  
too low with a spec of 5 Watts output!  If it is I can send it back to the  
place of purchase to be checked and exchanged if necessary.
 
There seems to be no problem on the 2 Meter band at only 25 % of scale (5  
Watts) readingjust on 440.
 
Michael
n2zdb
 
 
 
 
 
 
In a message dated 07/30/2017 12:36:49 P.M. Eastern Daylight Time,  
elecraftcov...@gmail.com writes:

 


The accuracy of a Bird Model 43 is +/- 5% of full scale.  The meter  scale 
is not
linear and produces the best read accuracy in the bottom portion of the  
meter's 
scale.  


There are numerous watt meters on the market today that are more  accurate. 
 


FWIW  73!


Ken Kopp - K0PP


--
On Sun, Jul 30, 2017 at 9:23 AM, Michael Walker  
wrote:

The  only way to get the answer you wish is to compare it to a bench
standard  like a bird watt meter.

Beyond that you are just guessing.   Sorry

Mike va3mw


On Sun, Jul 30, 2017 at 11:18 AM,  Michael via Elecraft <
elecraft@mailman.qth.net>  wrote:

> Measurement is in analog mode.should have made that  clear or not even
> mentioned a digital radio!
>
>  Michael




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Re: [Elecraft] W2 Wattmeter 440 band accuracy?

[Michael Walker]

The only way to get the answer you wish is to compare it to a bench
standard like a bird watt meter.

Beyond that you are just guessing.   Sorry

Mike va3mw


On Sun, Jul 30, 2017 at 11:18 AM, Michael via Elecraft <
elecraft@mailman.qth.net> wrote:

> Measurement is in analog mode.should have made that clear or not even
> mentioned a digital radio!
>
> Michael
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Re: [Elecraft] W2 Wattmeter 440 band accuracy?

[Michael via Elecraft]

Measurement is in analog mode.should have made that clear or not even  
mentioned a digital radio!
 
Michael
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Re: [Elecraft] W2 Wattmeter 440 band accuracy?

[Philip]

That would depend on what kind of digital you are talking about. I don't 
think the W2 reads instantaneous peak power. That usually takes special 
circuitry to do . Hint: a digital slug for a bird 43 wattmeter costs way 
more than the meter does. Analog meters will not read properly in a 
digital environment. Try the radio in analog mode.


Phil, wd8qwr
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Re: [Elecraft] W2 watt meter- multiple sensors question

[Ron D'Eau Claire]

Yes. It just takes switching the 8-wire connection to a new sensor with
something like this:

http://www.computercableinc.com/ccinc/products.jsp?sub=Switch+Boxes+-+Manual
=1173

73, Ron AC7AC

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dave Fugleberg
Sent: Saturday, July 22, 2017 2:31 PM
To: Elecraft List
Subject: [Elecraft] W2 watt meter- multiple sensors question

I see that the W2 can support up to 2 remote sensors, selectable from the
front panel.
Is it possible to support more (say 4 total) with some kind of external
switching arrangement?
I have a K3 with three XV series transverters (144, 222, 432). Each
transverter feeds a power amp and connects to an antenna for that band. I
currently use separate external meters at the output of each amplifier. I'd
like to replace those with a single meter that can monitor whichever band
I'm transmitting on.
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Re: [Elecraft] W2 watt meter- multiple sensors question

[Don Wilhelm]

Dave,

Certainly, just find a switch that can switch all the wires of an 
Ethernet cable and you will be in business.
Of course, you would have to operate the switch manually unless you can 
come up with some scheme to operate the switch when each transverter is 
powered on.


73,
Don W3FPR

On 7/22/2017 5:30 PM, Dave Fugleberg wrote:

I see that the W2 can support up to 2 remote sensors, selectable from the
front panel.
Is it possible to support more (say 4 total) with some kind of external
switching arrangement?
I have a K3 with three XV series transverters (144, 222, 432). Each
transverter feeds a power amp and connects to an antenna for that band. I
currently use separate external meters at the output of each amplifier. I'd
like to replace those with a single meter that can monitor whichever band
I'm transmitting on.

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Re: [Elecraft] W2 setting SWR alarm trip points

[Chuck Guenther]

Hi Mike,

Thanks for pointing this out.  I did try both bracket characters anyway, 
though. I did solve my problem, though.  After searching the archives, I 
found that one may need to send repeated bracket commands to the W2.  I 
tried this and it worked!  I was able to set my SWR trip point where I 
wanted it, at 3.5:1.


73,

Chuck  NI0C


On 1/5/2017 10:06 PM, Michael Chowning wrote:

Chuck,
   Do you realize you are using two different bracket characters?
 Mike, N8TTR
Sorry, I forgot my callsign in the earlier reply.


On Jan 5, 2017, at 10:14 PM, Chuck Guenther  wrote:

I just fired up a new W2 wattmeter, and it seems to be working ok, except that 
I can't seem to adjust the SWR alarm..

I'm using the W2 utility version 1.3.2.27 and my W2 firmware is version 1.00.  I have the PTT keying cables 
connected to the W2, and am trying to set the SWR trip point that will open the amplifier keying connection.  
On p. 8 of the version D2 manual it says I can toggle the alarm on / off by sending the character 
"a" to the W2.  This seems to be working okay in that I get the expected responses "a1," 
and "a0."

The manual does not specify what the factory default trip point is.  It does indicate that I can 
move the trip point up or down by send the bracket characters "}" and "[" to 
the W2, and that the response will be a number with an implied decimal point.  But all I get is 00 
in response.

What am I doing wrong?  This is very confusing.

TNX & 73,

Chuck Guenther  NI0C

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Re: [Elecraft] W2 problem

[David Ferrington, M0XDF]

At a guess, because it's simple to crimp. I doubt that the normal twisted pairs 
of CAT5 was the reason to not use it. 

-73 de M0XDF (from my iPhone)

> On 21 Jun 2016, at 11:29, John  wrote:
> 
> . I see elecraft supply a flat 8P8C
> RJ45 cable, so I guess there is an engineering reason for that?

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Re: [Elecraft] W2 problem

[John]

Hi All,

I'd be interested in the answers to this, as my W2 also recently lost the
same R10 component. And especially the answers about the Ethernet/signal
cables too...

73, and a firm left handshake,
John (2E0XLX)

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
STEPHEN BUNTING
Sent: 20 June 2016 16:03
To: elecraft 
Subject: [Elecraft] W2 problem

Hi everyone,

I have a little used W2 wattmeter that has stopped working, but I have
recently had access to a working unit so I could test the display and sensor
unit independently. Both of mine have faults -

The display has lost port nr 1 and it looks like R10 has been damaged on the
PCB. What physical size is this resistor? I can see from the cct diagram
that it is 330R. I don't do much SMD work so don't recognise the physical
sizes.

My 2KW HF sensor displays high SWR and low power into a known good load when
used with my friends "good" W2. I cant see any physical problems, so how do
I go about fault finding this or getting it fixed? 

Can I use a regular Ethernet cable to connect display and sensor? I used one
to test my display with a known good sensor on port 2, but sometimes the
display went haywire whilst on the air. I see elecraft supply a flat 8P8C
RJ45 cable, so I guess there is an engineering reason for that?

Thanks for your advice!

73

Steve, M0BPQ
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Re: [Elecraft] W2 Wattmeter & 200 Watt Coupler Available

[Ed Gansen]

W2 has been sold.

Ed - K8DSS

> On Sep 23, 2015, at 8:17 AM, Ed Gansen  wrote:
> 
> I have a W2 Wattmeter with DCHF-200 Directional Coupler excess to my needs. 
> Excellent condition and just checked out by Elecraft. $180.000, including 
> CONUS shipping. Contact me off-list at k8...@arrl.net.
> 
> 73' Ed - K8DSS
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Re: [Elecraft] W2 Wattmeter Failure

[Alan]

Hi Roger,

I'm looking at the W2 kilowatt sensor schematic and scratching my head 
trying to figure out how that could have happened.  There are 49.9k 
resistors in series with all the op amp inputs, so there would have to 
be hundreds of volts coming out of the detectors to damage the devices. 
 Plus the fact that all 4 op amps (actually two dual op amps) were 
destroyed argues against that as well.


I would suspect the 5V op-amp power supply.  Perhaps there was a failure 
in the W2 power supply or maybe a spike on the supply.  A large voltage 
transient causing a current spike in the sensor cable might do it, 
although it is hard to imagine 50W at 475 kHz doing that.


Alan N1AL


On 05/12/2015 11:21 PM, Roger Crofts wrote:

I made a rare QSO on 630 metres the other day. My W2 wattmeter was
in-line between the 630m transmitter and the 630m tuner. I was not
using the W2, because my 630m transmitter has its own internal SWR
meter. When I returned to normal HF operation, I noticed the W2 was
not working. I discovered all four unity gain op-amps in the W2
directional coupler were destroyed. I replaced the op-amps and the W2
operated normally again. The W2 wattmeter is not intended to operate
below 1.8 MHz, but it does have a 2KW rating, so one could be
forgiven for assuming it could handle 50 watts at 475 KHz. Next time
I operate on 630 metres, I will by-pass the W2. Roger, VK4YB


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Re: [Elecraft] W2 Watt meter suggestion

[W0MU Mike Fatchett]

Dayton is coming, Dayton is coming!

Mike W0MU

On 3/14/2015 4:51 PM, Gary Gregory wrote:

Harlen

Yep.

However i have just got more info in the last coupla days.

Please ask Wayne or Eric as there is more updated info coming very
soon:-)

Gary
Vk1ZZ
K3, KX3, KPA500-FT, KAT500-FT,P3.
On 15/03/2015 8:26 AM, hsherriff hsherr...@reagan.com wrote:


Gary
They have been working on that for how many years now?
Harlan
NC3C


Sent from my Verizon Wireless 4G LTE smartphone


 Original message 
From: Gary Gregory vk1zzg...@gmail.com
Date:03/14/2015 5:14 PM (GMT-05:00)
To: Vic K2VCO k2vco@gmail.com
Cc: Elecraft List elecraft@mailman.qth.net
Subject: Re: [Elecraft] W2 Watt meter suggestion

A sensor is close to completion for the P3 which will do what you want i
believe.

Perhaps you could ask Wayne for confirmation.

Gary
Vk1ZZ
K3, KX3, KPA500-FT, KAT500-FT,P3.
On 15/03/2015 6:51 AM, Vic Rosenthal 4X6GP/K2VCO k2vco@gmail.com
wrote:


I'm sure it would be easy to add a pickup to the sensor yourself. It

could

be done with a toroid transformer placed on the center pin of one of the
coax connectors.

On 14 Mar 2015 22:13, Jobst Vandrey wrote:


I operate almost exclusively with digital modes so I would REALLY like

to

see a new feature on the W2 sensor module to allow a tektronix scope to

be

connected for my K3 so I can monitor the transmission envelope.  I have
the
CP1 directional coupler minimodule but putting that in line makes for a
cluttered mess with at least two more connections to create issues.

Any chance that this will be a future enhancement to the sensor module -
or
is there another easy way to connect a monitor scope that I am not

seeing.

Thanks

Jobst
AC0LP


--
73,
Vic, 4X6GP/K2VCO
Rehovot, Israel
http://www.qsl.net/k2vco/
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Re: [Elecraft] W2 Watt meter suggestion

[Gary Gregory]

My lips are sealed.:-)

Gary
Vk1ZZ
K3, KX3, KPA500-FT, KAT500-FT,P3.
On 15/03/2015 9:19 AM, W0MU Mike Fatchett w...@w0mu.com wrote:

  and Visalia where Elecraft has been known to release new stuff!

 Mike W0MU


 On 3/14/2015 4:55 PM, Gary Gregory wrote:

 Mike

 You might be physic...:-)

 Gary
 Vk1ZZ
 K3, KX3, KPA500-FT, KAT500-FT,P3.
 On 15/03/2015 8:54 AM, W0MU Mike Fatchett w...@w0mu.com wrote:

 Dayton is coming, Dayton is coming!

 Mike W0MU

 On 3/14/2015 4:51 PM, Gary Gregory wrote:

 Harlen

 Yep.

 However i have just got more info in the last coupla days.

 Please ask Wayne or Eric as there is more updated info coming very
 soon:-)

 Gary
 Vk1ZZ
 K3, KX3, KPA500-FT, KAT500-FT,P3.
 On 15/03/2015 8:26 AM, hsherriff hsherr...@reagan.com wrote:

  Gary
 They have been working on that for how many years now?
 Harlan
 NC3C


 Sent from my Verizon Wireless 4G LTE smartphone


  Original message 
 From: Gary Gregory vk1zzg...@gmail.com
 Date:03/14/2015 5:14 PM (GMT-05:00)
 To: Vic K2VCO k2vco@gmail.com
 Cc: Elecraft List elecraft@mailman.qth.net
 Subject: Re: [Elecraft] W2 Watt meter suggestion

 A sensor is close to completion for the P3 which will do what you want i
 believe.

 Perhaps you could ask Wayne for confirmation.

 Gary
 Vk1ZZ
 K3, KX3, KPA500-FT, KAT500-FT,P3.
 On 15/03/2015 6:51 AM, Vic Rosenthal 4X6GP/K2VCO k2vco@gmail.com
 
 wrote:

  I'm sure it would be easy to add a pickup to the sensor yourself. It

 could

 be done with a toroid transformer placed on the center pin of one of
 the
 coax connectors.

 On 14 Mar 2015 22:13, Jobst Vandrey wrote:

  I operate almost exclusively with digital modes so I would REALLY like

  to

  see a new feature on the W2 sensor module to allow a tektronix scope
 to

  be

  connected for my K3 so I can monitor the transmission envelope.  I
 have
 the
 CP1 directional coupler minimodule but putting that in line makes for
 a
 cluttered mess with at least two more connections to create issues.

 Any chance that this will be a future enhancement to the sensor
 module -
 or
 is there another easy way to connect a monitor scope that I am not

  seeing.

  Thanks

 Jobst
 AC0LP

  --
 73,
 Vic, 4X6GP/K2VCO
 Rehovot, Israel
 http://www.qsl.net/k2vco/
 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
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Re: [Elecraft] W2 Watt meter suggestion

[Gary Gregory]

A sensor is close to completion for the P3 which will do what you want i
believe.

Perhaps you could ask Wayne for confirmation.

Gary
Vk1ZZ
K3, KX3, KPA500-FT, KAT500-FT,P3.
On 15/03/2015 6:51 AM, Vic Rosenthal 4X6GP/K2VCO k2vco@gmail.com
wrote:

 I'm sure it would be easy to add a pickup to the sensor yourself. It could
 be done with a toroid transformer placed on the center pin of one of the
 coax connectors.

 On 14 Mar 2015 22:13, Jobst Vandrey wrote:

 I operate almost exclusively with digital modes so I would REALLY like to
 see a new feature on the W2 sensor module to allow a tektronix scope to be
 connected for my K3 so I can monitor the transmission envelope.  I have
 the
 CP1 directional coupler minimodule but putting that in line makes for a
 cluttered mess with at least two more connections to create issues.

 Any chance that this will be a future enhancement to the sensor module -
 or
 is there another easy way to connect a monitor scope that I am not seeing.

 Thanks

 Jobst
 AC0LP


 --
 73,
 Vic, 4X6GP/K2VCO
 Rehovot, Israel
 http://www.qsl.net/k2vco/
 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
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Re: [Elecraft] W2 Watt meter suggestion

[Gary Gregory]

Mike

You might be physic...:-)

Gary
Vk1ZZ
K3, KX3, KPA500-FT, KAT500-FT,P3.
On 15/03/2015 8:54 AM, W0MU Mike Fatchett w...@w0mu.com wrote:

 Dayton is coming, Dayton is coming!

 Mike W0MU

 On 3/14/2015 4:51 PM, Gary Gregory wrote:

 Harlen

 Yep.

 However i have just got more info in the last coupla days.

 Please ask Wayne or Eric as there is more updated info coming very
 soon:-)

 Gary
 Vk1ZZ
 K3, KX3, KPA500-FT, KAT500-FT,P3.
 On 15/03/2015 8:26 AM, hsherriff hsherr...@reagan.com wrote:

  Gary
 They have been working on that for how many years now?
 Harlan
 NC3C


 Sent from my Verizon Wireless 4G LTE smartphone


  Original message 
 From: Gary Gregory vk1zzg...@gmail.com
 Date:03/14/2015 5:14 PM (GMT-05:00)
 To: Vic K2VCO k2vco@gmail.com
 Cc: Elecraft List elecraft@mailman.qth.net
 Subject: Re: [Elecraft] W2 Watt meter suggestion

 A sensor is close to completion for the P3 which will do what you want i
 believe.

 Perhaps you could ask Wayne for confirmation.

 Gary
 Vk1ZZ
 K3, KX3, KPA500-FT, KAT500-FT,P3.
 On 15/03/2015 6:51 AM, Vic Rosenthal 4X6GP/K2VCO k2vco@gmail.com
 wrote:

  I'm sure it would be easy to add a pickup to the sensor yourself. It

 could

 be done with a toroid transformer placed on the center pin of one of the
 coax connectors.

 On 14 Mar 2015 22:13, Jobst Vandrey wrote:

  I operate almost exclusively with digital modes so I would REALLY like

 to

 see a new feature on the W2 sensor module to allow a tektronix scope to

 be

 connected for my K3 so I can monitor the transmission envelope.  I have
 the
 CP1 directional coupler minimodule but putting that in line makes for a
 cluttered mess with at least two more connections to create issues.

 Any chance that this will be a future enhancement to the sensor module
 -
 or
 is there another easy way to connect a monitor scope that I am not

 seeing.

 Thanks

 Jobst
 AC0LP

  --
 73,
 Vic, 4X6GP/K2VCO
 Rehovot, Israel
 http://www.qsl.net/k2vco/
 __
 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
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Re: [Elecraft] W2 Watt meter suggestion

[W0MU Mike Fatchett]

and Visalia where Elecraft has been known to release new stuff!

Mike W0MU

On 3/14/2015 4:55 PM, Gary Gregory wrote:


Mike

You might be physic...:-)

Gary
Vk1ZZ
K3, KX3, KPA500-FT, KAT500-FT,P3.

On 15/03/2015 8:54 AM, W0MU Mike Fatchett w...@w0mu.com 
mailto:w...@w0mu.com wrote:


Dayton is coming, Dayton is coming!

Mike W0MU

On 3/14/2015 4:51 PM, Gary Gregory wrote:

Harlen

Yep.

However i have just got more info in the last coupla days.

Please ask Wayne or Eric as there is more updated info coming very
soon:-)

Gary
Vk1ZZ
K3, KX3, KPA500-FT, KAT500-FT,P3.
On 15/03/2015 8:26 AM, hsherriff hsherr...@reagan.com
mailto:hsherr...@reagan.com wrote:

Gary
They have been working on that for how many years now?
Harlan
NC3C


Sent from my Verizon Wireless 4G LTE smartphone


 Original message 
From: Gary Gregory vk1zzg...@gmail.com
mailto:vk1zzg...@gmail.com
Date:03/14/2015 5:14 PM (GMT-05:00)
To: Vic K2VCO k2vco@gmail.com
mailto:k2vco@gmail.com
Cc: Elecraft List elecraft@mailman.qth.net
mailto:elecraft@mailman.qth.net
Subject: Re: [Elecraft] W2 Watt meter suggestion

A sensor is close to completion for the P3 which will do
what you want i
believe.

Perhaps you could ask Wayne for confirmation.

Gary
Vk1ZZ
K3, KX3, KPA500-FT, KAT500-FT,P3.
On 15/03/2015 6:51 AM, Vic Rosenthal 4X6GP/K2VCO
k2vco@gmail.com mailto:k2vco@gmail.com
wrote:

I'm sure it would be easy to add a pickup to the
sensor yourself. It

could

be done with a toroid transformer placed on the center
pin of one of the
coax connectors.

On 14 Mar 2015 22:13, Jobst Vandrey wrote:

I operate almost exclusively with digital modes so
I would REALLY like

to

see a new feature on the W2 sensor module to allow
a tektronix scope to

be

connected for my K3 so I can monitor the
transmission envelope.  I have
the
CP1 directional coupler minimodule but putting
that in line makes for a
cluttered mess with at least two more connections
to create issues.

Any chance that this will be a future enhancement
to the sensor module -
or
is there another easy way to connect a monitor
scope that I am not

seeing.

Thanks

Jobst
AC0LP

--
73,
Vic, 4X6GP/K2VCO
Rehovot, Israel
http://www.qsl.net/k2vco/
__
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Re: [Elecraft] W2 Watt meter suggestion

[hsherriff]

Great.. I was hoping it would be available before I retire next year..


Sent from my Verizon Wireless 4G LTE smartphone

div Original message /divdivFrom: Gary Gregory 
vk1zzg...@gmail.com /divdivDate:03/14/2015  6:51 PM  (GMT-05:00) 
/divdivTo: Harlan hsherr...@reagan.com /divdivCc: Vic K2VCO 
k2vco@gmail.com, Elecraft List elecraft@mailman.qth.net 
/divdivSubject: Re: [Elecraft] W2 Watt meter suggestion /divdiv
/divHarlen

Yep.

However i have just got more info in the last coupla days.

Please ask Wayne or Eric as there is more updated info coming very soon:-)

Gary
Vk1ZZ
K3, KX3, KPA500-FT, KAT500-FT,P3.

On 15/03/2015 8:26 AM, hsherriff hsherr...@reagan.com wrote:
Gary
They have been working on that for how many years now?
Harlan 
NC3C 


Sent from my Verizon Wireless 4G LTE smartphone


 Original message 
From: Gary Gregory vk1zzg...@gmail.com
Date:03/14/2015 5:14 PM (GMT-05:00)
To: Vic K2VCO k2vco@gmail.com
Cc: Elecraft List elecraft@mailman.qth.net
Subject: Re: [Elecraft] W2 Watt meter suggestion

A sensor is close to completion for the P3 which will do what you want i
believe.

Perhaps you could ask Wayne for confirmation.

Gary
Vk1ZZ
K3, KX3, KPA500-FT, KAT500-FT,P3.
On 15/03/2015 6:51 AM, Vic Rosenthal 4X6GP/K2VCO k2vco@gmail.com
wrote:

 I'm sure it would be easy to add a pickup to the sensor yourself. It could
 be done with a toroid transformer placed on the center pin of one of the
 coax connectors.

 On 14 Mar 2015 22:13, Jobst Vandrey wrote:

 I operate almost exclusively with digital modes so I would REALLY like to
 see a new feature on the W2 sensor module to allow a tektronix scope to be
 connected for my K3 so I can monitor the transmission envelope.  I have
 the
 CP1 directional coupler minimodule but putting that in line makes for a
 cluttered mess with at least two more connections to create issues.

 Any chance that this will be a future enhancement to the sensor module -
 or
 is there another easy way to connect a monitor scope that I am not seeing.

 Thanks

 Jobst
 AC0LP


 --
 73,
 Vic, 4X6GP/K2VCO
 Rehovot, Israel
 http://www.qsl.net/k2vco/
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Re: [Elecraft] W2 Watt meter suggestion

[hsherriff]

Gary
They have been working on that for how many years now?
Harlan 
NC3C 


Sent from my Verizon Wireless 4G LTE smartphone

div Original message /divdivFrom: Gary Gregory 
vk1zzg...@gmail.com /divdivDate:03/14/2015  5:14 PM  (GMT-05:00) 
/divdivTo: Vic K2VCO k2vco@gmail.com /divdivCc: Elecraft List 
elecraft@mailman.qth.net /divdivSubject: Re: [Elecraft] W2 Watt meter 
suggestion /divdiv
/divA sensor is close to completion for the P3 which will do what you want i
believe.

Perhaps you could ask Wayne for confirmation.

Gary
Vk1ZZ
K3, KX3, KPA500-FT, KAT500-FT,P3.
On 15/03/2015 6:51 AM, Vic Rosenthal 4X6GP/K2VCO k2vco@gmail.com
wrote:

 I'm sure it would be easy to add a pickup to the sensor yourself. It could
 be done with a toroid transformer placed on the center pin of one of the
 coax connectors.

 On 14 Mar 2015 22:13, Jobst Vandrey wrote:

 I operate almost exclusively with digital modes so I would REALLY like to
 see a new feature on the W2 sensor module to allow a tektronix scope to be
 connected for my K3 so I can monitor the transmission envelope.  I have
 the
 CP1 directional coupler minimodule but putting that in line makes for a
 cluttered mess with at least two more connections to create issues.

 Any chance that this will be a future enhancement to the sensor module -
 or
 is there another easy way to connect a monitor scope that I am not seeing.

 Thanks

 Jobst
 AC0LP


 --
 73,
 Vic, 4X6GP/K2VCO
 Rehovot, Israel
 http://www.qsl.net/k2vco/
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Re: [Elecraft] W2 Watt meter suggestion

[Vic Rosenthal 4X6GP/K2VCO]

I'm sure it would be easy to add a pickup to the sensor yourself. It 
could be done with a toroid transformer placed on the center pin of one 
of the coax connectors.


On 14 Mar 2015 22:13, Jobst Vandrey wrote:

I operate almost exclusively with digital modes so I would REALLY like to
see a new feature on the W2 sensor module to allow a tektronix scope to be
connected for my K3 so I can monitor the transmission envelope.  I have the
CP1 directional coupler minimodule but putting that in line makes for a
cluttered mess with at least two more connections to create issues.

Any chance that this will be a future enhancement to the sensor module - or
is there another easy way to connect a monitor scope that I am not seeing.

Thanks

Jobst
AC0LP


--
73,
Vic, 4X6GP/K2VCO
Rehovot, Israel
http://www.qsl.net/k2vco/
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Re: [Elecraft] W2 Watt meter suggestion

[Gary Gregory]

Harlen

Yep.

However i have just got more info in the last coupla days.

Please ask Wayne or Eric as there is more updated info coming very
soon:-)

Gary
Vk1ZZ
K3, KX3, KPA500-FT, KAT500-FT,P3.
On 15/03/2015 8:26 AM, hsherriff hsherr...@reagan.com wrote:

 Gary
 They have been working on that for how many years now?
 Harlan
 NC3C


 Sent from my Verizon Wireless 4G LTE smartphone


  Original message 
 From: Gary Gregory vk1zzg...@gmail.com
 Date:03/14/2015 5:14 PM (GMT-05:00)
 To: Vic K2VCO k2vco@gmail.com
 Cc: Elecraft List elecraft@mailman.qth.net
 Subject: Re: [Elecraft] W2 Watt meter suggestion

 A sensor is close to completion for the P3 which will do what you want i
 believe.

 Perhaps you could ask Wayne for confirmation.

 Gary
 Vk1ZZ
 K3, KX3, KPA500-FT, KAT500-FT,P3.
 On 15/03/2015 6:51 AM, Vic Rosenthal 4X6GP/K2VCO k2vco@gmail.com
 wrote:

  I'm sure it would be easy to add a pickup to the sensor yourself. It
 could
  be done with a toroid transformer placed on the center pin of one of the
  coax connectors.
 
  On 14 Mar 2015 22:13, Jobst Vandrey wrote:
 
  I operate almost exclusively with digital modes so I would REALLY like
 to
  see a new feature on the W2 sensor module to allow a tektronix scope to
 be
  connected for my K3 so I can monitor the transmission envelope.  I have
  the
  CP1 directional coupler minimodule but putting that in line makes for a
  cluttered mess with at least two more connections to create issues.
 
  Any chance that this will be a future enhancement to the sensor module -
  or
  is there another easy way to connect a monitor scope that I am not
 seeing.
 
  Thanks
 
  Jobst
  AC0LP
 
 
  --
  73,
  Vic, 4X6GP/K2VCO
  Rehovot, Israel
  http://www.qsl.net/k2vco/
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Re: [Elecraft] W2 Directional Couplers

[Vic Rosenthal 4X6GP/K2VCO]

The 200W version has a low range that can measure power down to 0.1 
watt. The minimum reading on the 2000W version is 1 watt.


On 5 Jan 2015 10:12, David Ferrington, M0XDF wrote:


I would have thought there is some difference, otherwise why go to the trouble 
of making two different models?
-73 de M0XDF


On 4 Jan 2015, at 20:01, Michael Eberle mtebe...@mchsi.com wrote:

Dan,

With the 2000 watt coupler, you can still select either the 20 watt, 200 watt, 
or 2000 watt scales.  I doubt there would be any difference in resolution by 
using the 2000 watt coupler with the W2 set for the 200 watt scale.  The manual 
specifies accuracy of +/- 0.5 dB typical for both sensors.

Mike
KI0HA


On 1/3/2015 09:31, kg5eju wrote:
100 Watt station with 2 antenna.  Need a second coupler of the W2.  First one 
is 200 watt, and thinking of adding a 2000 watt coupler for the second (future 
proofing for possible linear).  But, wondering if there is some 
accuracy/performance trade-off using a 2000 watt coupler on a 100 watt station?

Thank you for your thoughts.

73 - Dan



--
73,
Vic, 4X6GP/K2VCO
Rehovot, Israel
http://www.qsl.net/k2vco/
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Re: [Elecraft] W2 Directional Couplers

[David Ferrington, M0XDF]

I would have thought there is some difference, otherwise why go to the trouble 
of making two different models?
-73 de M0XDF

 On 4 Jan 2015, at 20:01, Michael Eberle mtebe...@mchsi.com wrote:
 
 Dan,
 
 With the 2000 watt coupler, you can still select either the 20 watt, 200 
 watt, or 2000 watt scales.  I doubt there would be any difference in 
 resolution by using the 2000 watt coupler with the W2 set for the 200 watt 
 scale.  The manual specifies accuracy of +/- 0.5 dB typical for both sensors.
 
 Mike
 KI0HA
 
 On 1/3/2015 09:31, kg5eju wrote:
 100 Watt station with 2 antenna.  Need a second coupler of the W2.  First 
 one is 200 watt, and thinking of adding a 2000 watt coupler for the second 
 (future proofing for possible linear).  But, wondering if there is some 
 accuracy/performance trade-off using a 2000 watt coupler on a 100 watt 
 station?
 
 Thank you for your thoughts.
 
 73 - Dan
 
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Re: [Elecraft] W2 Directional Couplers

[Michael Eberle]

Dan,

With the 2000 watt coupler, you can still select either the 20 watt, 200 
watt, or 2000 watt scales.  I doubt there would be any difference in 
resolution by using the 2000 watt coupler with the W2 set for the 200 
watt scale.  The manual specifies accuracy of +/- 0.5 dB typical for 
both sensors.


Mike
KI0HA

On 1/3/2015 09:31, kg5eju wrote:

100 Watt station with 2 antenna.  Need a second coupler of the W2.  First one 
is 200 watt, and thinking of adding a 2000 watt coupler for the second (future 
proofing for possible linear).  But, wondering if there is some 
accuracy/performance trade-off using a 2000 watt coupler on a 100 watt station?

Thank you for your thoughts.

73 - Dan



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Re: [Elecraft] W2 Directional Couplers

[Phil Kane]

On 1/3/2015 7:31 AM, kg5eju wrote:

 But, wondering if there is some accuracy/performance trade-off using a 2000 
 watt coupler on a 100 watt station?

The FCC's standard for transmitter metering  is the minimum normal
reading cannot be less than 20% of the full scale reading for a
linear-scale instrument or 33% for a logarithmic-scale instrument.   For
a digital readout, the readout of the device must include at least three
digits and must indicate the value of the parameter being read to an
accuracy of 2%.

See FCC Rules Section 73.1215 for other details.

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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Re: [Elecraft] W2 Meter Question

[Vic Rosenthal]

I understand that you have the sensor connected to the vertical 
permanently. But when you transmit on one of the other antennas, it 
reads a very high SWR, even though out of the circuit.


What it sounds like is that the vertical is picking up RF from the 
dipoles. When they are selected, the coax to the vertical is either 
shorted or open, depending on the switch. The coax to the vertical is 
operating at a high SWR -- it is just being excited by the RF pickup, 
not the transmitter.


One solution would be to put the sensor in the line from the transmitter 
to the switch rather than from the switch to the vertical.


Vic/K2VCO

On 6/4/2014 8:51 PM, K8JHR wrote:

Greetings -

I recently assembled and installed the W-2 SWR/wattmeter.


Background:

I have several antennas.  I have an A/B switch to select either a
vertical, or one of several dipoles further selected using a remote coax
switch.  The sensor is on the branch with the vertical.  I use a linear
amp at 500 watts when net control for a Brand X rig owners' net.


Question/Problem:

When using the vertical, the meter works on the A side of the switch
works properly.  But, using any of dipoles, on the B side of the switch,
it goes crazy and all the diodes light up.  It only does this when the
amp is on line.  I tried re-routing the sensor cable with no advantage.

Any ideas?   Thanks in advance.


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Re: [Elecraft] W2 Meter Question

[Don Wilhelm]

The wattmeter should be connected between the KPA500 and the KAT500 if 
you want to read a low SWR.  The SWR that is seen by the KPA500 is the 
only thing that matters, and that would normally be 1.5 or less.


Your connection (between the tuner and the antenna) will not change the 
SWR reading because you are reading the SWR into the antenna, and the 
tuner will not alter that.


The tuner will not change the SWR on the antenna, but it's function is 
to transform the antenna feedpoint impedance into something that will be 
seen as a low SWR by the transmitter PA stages - it does not change the 
SWR of the antenna/feedline itself.


If the SWR varies with the power level, that is usually a result of RF 
on the outside of the coax that can only be properly cured by common 
mode chokes placed in the antenna system.
See the RFI information presented by Jim Brown K9YC at 
http://audiosystemsgroup.com/RFI-Ham.pdf for ways to eliminate common 
mode current on the feedline as well as other problems with RFI 
suppression in the hamshack.


73,
Don W3FPR

On 6/4/2014 11:51 PM, K8JHR wrote:

Greetings -

I recently assembled and installed the W-2 SWR/wattmeter.


Background:

I have several antennas.  I have an A/B switch to select either a 
vertical, or one of several dipoles further selected using a remote 
coax switch.  The sensor is on the branch with the vertical.  I use a 
linear amp at 500 watts when net control for a Brand X rig owners' net.



Question/Problem:

When using the vertical, the meter works on the A side of the switch 
works properly.  But, using any of dipoles, on the B side of the 
switch, it goes crazy and all the diodes light up.  It only does this 
when the amp is on line.  I tried re-routing the sensor cable with no 
advantage.


Any ideas?   Thanks in advance.



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Re: [Elecraft] W2.exe Question

[Don Wilhelm]

Chris,

Go into Setup and select the port that you want to use for the W2.
That selection should be sticky.
Once that port is selected, it will not scan for eligible ports.

73,
Don W3FPR

On 4/28/2014 3:15 PM, Chris Johnson wrote:

Is there a way to disable the W2.exe from scanning for W2.  I have many 
virtual com ports on my computer, some of which are over the network, and it takes nearly 
one minute for it to timeout the scan on program launch.   Is there any command line 
switches to make it not autoscan and try an explicitly defined port only?



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Re: [Elecraft] W2.exe Question

[Michael Walker]

No, it isn't actually.  It scans all com ports when start up.  I can see it
when it starts up on my remote base.  Even when you have selected a port.

I actually want a smaller version of the W2 so that it just shows 2 bars.
 Call it a 'compact' mode view.

Mike va3mw



On Mon, Apr 28, 2014 at 4:07 PM, Don Wilhelm w3...@embarqmail.com wrote:

 Chris,

 Go into Setup and select the port that you want to use for the W2.
 That selection should be sticky.
 Once that port is selected, it will not scan for eligible ports.

 73,
 Don W3FPR


 On 4/28/2014 3:15 PM, Chris Johnson wrote:

 Is there a way to disable the W2.exe from scanning for W2.  I have many
 virtual com ports on my computer, some of which are over the network, and
 it takes nearly one minute for it to timeout the scan on program launch.
 Is there any command line switches to make it not autoscan and try an
 explicitly defined port only?


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Re: [Elecraft] W2.exe Question

[XE3/K5ENS via Elecraft]

Don maybe should have stated if you have a port selected that is available
then it will not scan.

Keith 



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Re: [Elecraft] W2 fault?

[Don Wilhelm]

Steve,

I would try another sensor before digging into the W2 proper.

73,
Don W3FPR

On 4/23/2014 8:43 AM, Steve Bunting wrote:

Hi everyone,


I have a W2 Watt meter and 2KW sensor that I haven't used for some time. I
loaned it out to a club mate who reported it DOA. The unit self-tests OK
and I've swapped the 8 way RJ45 cable for an out of the packet new one.
I've tested it thoroughly on my bench and have found a few issues that I
would like help resolving:


When the sensor is plugged into port 1 I get full scale (high) SWR with no
rf applied. When RF is applied no forward power is registered.


When I plug the sensor into port 2, the meter functions, but 100W input
from my K2 is reported as 80W. I have checked the K2 with other power
meters and the all say 100W +/- 5%. The W2 also reports an SWR of 1.5:1
when I use any of my dummy loads (or antennas!). They can't all be bad on
every HF band!





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Re: [Elecraft] W2 fault?

[Michael Walker]

I would send an email to supp...@elecraft.com with the details.

They usually respond to me within hours.  I know as I have been having
issues with my KRC2 holding its mappings.

Mike va3mw



On Wed, Apr 23, 2014 at 9:07 AM, Don Wilhelm w3...@embarqmail.com wrote:

 Steve,

 I would try another sensor before digging into the W2 proper.

 73,
 Don W3FPR


 On 4/23/2014 8:43 AM, Steve Bunting wrote:

 Hi everyone,


 I have a W2 Watt meter and 2KW sensor that I haven't used for some time. I
 loaned it out to a club mate who reported it DOA. The unit self-tests OK
 and I've swapped the 8 way RJ45 cable for an out of the packet new one.
 I've tested it thoroughly on my bench and have found a few issues that I
 would like help resolving:


 When the sensor is plugged into port 1 I get full scale (high) SWR with no
 rf applied. When RF is applied no forward power is registered.


 When I plug the sensor into port 2, the meter functions, but 100W input
 from my K2 is reported as 80W. I have checked the K2 with other power
 meters and the all say 100W +/- 5%. The W2 also reports an SWR of 1.5:1
 when I use any of my dummy loads (or antennas!). They can't all be bad on
 every HF band!




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Re: [Elecraft] W2 fault?

[Steve Bunting]

Hi Don and list,

I don't have access to another one, and don't really want to buy one just
for that.

Is there a UK based W2 owner who could loan me a coupler for quick test? Or
I'll send my meter to you if that would be easier. All costs covered of
course!

Cheers
Steve
M0BPQ

 Steve,

 I would try another sensor before digging into the W2 proper.

 73,
 Don W3FPR

On 4/23/2014 8:43 AM, Steve Bunting wrote:
 Hi everyone,


 I have a W2 Watt meter and 2KW sensor that I haven't used for some time. I
 loaned it out to a club mate who reported it DOA. The unit self-tests OK
 and I've swapped the 8 way RJ45 cable for an out of the packet new one.
 I've tested it thoroughly on my bench and have found a few issues that I
 would like help resolving:


 When the sensor is plugged into port 1 I get full scale (high) SWR with no
 rf applied. When RF is applied no forward power is registered.


 When I plug the sensor into port 2, the meter functions, but 100W input
 from my K2 is reported as 80W. I have checked the K2 with other power
 meters and the all say 100W +/- 5%. The W2 also reports an SWR of 1.5:1
 when I use any of my dummy loads (or antennas!). They can't all be bad on
 every HF band!



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Re: [Elecraft] W2 Integration Question

[Ian Kahn]

I have and use the W2. It is fed by coax as follows:
K3-KPA500-KAT500-W2-Antenna.  It works great giving me a closer
approximation of what the antenna looks like before it gets tuned by the
KAT500.

Hope this helps.

Ian,  KM4IK
Roswell,  GA
km4ik@gmail.com
 On Mar 9, 2014 9:07 AM, Leon Begin 99-l...@att.net wrote:

 Need some help to un-confuse me. My current configuration is as follows:
 K3(P3)-W2-KAT500. I¹m days away from ordering my last upgrade, a KPA500 
 the Aux Cable set. I know that the W2 may not be a necessity now with the
 KPA500 built-in watt meter but I bought it, assembled it and it does
 balance
 out the appearance of my K-Line. The current cabling diagrams on any of the
 above components do not show the W2 in the loop. Anyone out there have a W2
 in the K3-KPA500-KAT500 configuration and what is the correct cabling for
 it? BTW, I¹m going to miss all those 2D fastener¹s and itty bitty washers!

 Thanks,

 Lee
 KF5YBE


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Re: [Elecraft] W2 Integration Question

[Cady, Fred]

I have the W2 between the K3 and the KPA500.  Its useful to monitor what the K3 
is looking at and its power output and the KPA500 meter is showing its output 
power.
Cheers and 73,
Fred KE7X

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ian Kahn
Sent: Sunday, March 09, 2014 7:53 AM
To: Leon Begin
Cc: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] W2 Integration Question

I have and use the W2. It is fed by coax as follows:
K3-KPA500-KAT500-W2-Antenna.  It works great giving me a closer approximation 
of what the antenna looks like before it gets tuned by the KAT500.

Hope this helps.

Ian,  KM4IK
Roswell,  GA
km4ik@gmail.com
 On Mar 9, 2014 9:07 AM, Leon Begin 99-l...@att.net wrote:

 Need some help to un-confuse me. My current configuration is as follows:
 K3(P3)-W2-KAT500. I¹m days away from ordering my last upgrade, a 
 KPA500  the Aux Cable set. I know that the W2 may not be a necessity 
 now with the
 KPA500 built-in watt meter but I bought it, assembled it and it does 
 balance out the appearance of my K-Line. The current cabling diagrams 
 on any of the above components do not show the W2 in the loop. Anyone 
 out there have a W2 in the K3-KPA500-KAT500 configuration and what is 
 the correct cabling for it? BTW, I¹m going to miss all those 2D 
 fastener¹s and itty bitty washers!

 Thanks,

 Lee
 KF5YBE


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Re: [Elecraft] W2 wattmeter not reading xv50 output

[Bob KD7YZ]

On 1/24/2014 02:44, John Marvin wrote:
 1) ... Did you take note of SWR and reverse power using the W2 utility?

1.5:1

 2) Did you build your XV50 or did you get a factory built version?

W3FPR built and calibrated it.



 Final question. How were you generating the test signal and what mode
 were you using?

A paddle and in CW mode

-- 

Bob KD7YZ
http://www.qrz.com/db/KD7YZ
www.denstarfarm.us/LGD

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Re: [Elecraft] W2 wattmeter not reading xv50 output

[Bob KD7YZ]

On 1/22/2014 02:05, John Marvin wrote:
 Bob,

 You should try installing the W2 utility 

Just went and D/L. Thanks .

XV-50 into a dummy-load:
K3-DriveW2-UTil XV50 BarsW2-Box-LED

0.1mW drive 0.50W on W2 2 bars ((2W) 0
0.2mW drive 0.83W on W2 4 bars ( 5W  0
0.3mW drive 1.42W on W2 5 bars   7W  1 1watt
0.4mW drive 1.90W on W2 6 bars  10W  1 1watt
0.5mW drive 2.41W on W2 6 bars  10W  2 2watt

0.6mW drive 3.02W on W2 7 bars  15W  3 3watt
0.7mW drive 3.66W on W2 8 bars  20W  3 3watt
0.8mW drive 4.23W on W2 9 bars  25W  4 4watt
0.9mW drive 4.81W on W2 10bars  30W  4 4watt

1.0mW drive 5.35W on W2 10bars  30W  5 5watt
1.5mW drive 8.80W on W2 10bars  30W  8 8watt

So, as you see, nothing agrees with anything. Note: I am not a test-lab
and have little in the way of measurement equipment. Coaxial-Dynamics in
the PA output. However, 500/1000 watt slugs.

But, the XV50 drives the 180w 6m brick to an acceptable low limit (based
on XV50 drive).
The Brick drives the PA to 1250W .. so I can't complain in that regard.
Just wanted to monitor/see the output of the XV50 and can't seem to do it.

-- 

Bob KD7YZ
http://www.qrz.com/db/KD7YZ
www.denstarfarm.us/LGD

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Re: [Elecraft] W2 wattmeter not reading xv50 output

[John Marvin]

I'm not sure I can explain this. But it's possible the problem is a 
combination of two possible error sources:


1) I believe the XV50 leds are displaying power based on the voltage at 
the final stage, and is not using a SWR bridge to measure forward power. 
The W2 is measuring forward power, so if the SWR is greater not 1:1 then 
it will measure a lower value than what the XV50 is displaying. Did you 
take note of SWR and reverse power using the W2 utility? Since you are 
driving another amp I wouldn't expect a really high SWR though.


2) Did you build your XV50 or did you get a factory built version? If 
factory built then Elecraft would have properly calibrated it. If you 
built it, did you perform all the calibration steps? Since you already 
mentioned you don't have a lot of test equipment, you may not have been 
able to calibrate the XV50 properly. In particular, if calibrated 
properly, 1mW drive should produce 20 watts output, not 30.  Also,  you 
should try to avoid sending more than 1mW to the XV50.


Final question. How were you generating the test signal and what mode 
were you using?


John
AC0ZG

On 1/23/2014 8:10 AM, Bob KD7YZ wrote:

On 1/22/2014 02:05, John Marvin wrote:

Bob,

You should try installing the W2 utility

Just went and D/L. Thanks .

XV-50 into a dummy-load:
K3-DriveW2-UTil XV50 BarsW2-Box-LED

0.1mW drive 0.50W on W2 2 bars ((2W) 0
0.2mW drive 0.83W on W2 4 bars ( 5W  0
0.3mW drive 1.42W on W2 5 bars   7W  1 1watt
0.4mW drive 1.90W on W2 6 bars  10W  1 1watt
0.5mW drive 2.41W on W2 6 bars  10W  2 2watt

0.6mW drive 3.02W on W2 7 bars  15W  3 3watt
0.7mW drive 3.66W on W2 8 bars  20W  3 3watt
0.8mW drive 4.23W on W2 9 bars  25W  4 4watt
0.9mW drive 4.81W on W2 10bars  30W  4 4watt

1.0mW drive 5.35W on W2 10bars  30W  5 5watt
1.5mW drive 8.80W on W2 10bars  30W  8 8watt

So, as you see, nothing agrees with anything. Note: I am not a test-lab
and have little in the way of measurement equipment. Coaxial-Dynamics in
the PA output. However, 500/1000 watt slugs.

But, the XV50 drives the 180w 6m brick to an acceptable low limit (based
on XV50 drive).
The Brick drives the PA to 1250W .. so I can't complain in that regard.
Just wanted to monitor/see the output of the XV50 and can't seem to do it.



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Re: [Elecraft] W2 wattmeter not reading xv50 output

[John Marvin]

Bob,

You should try installing the W2 utility (obviously you need to connect 
your W2 to a computer via the USB/serial cable that came with the W2 in 
order to do this). It shows the SWR and forward power with more 
precision than you get with the led front panel display. It would be 
interesting to see if you see a different reading when transmitting with 
the XV50 vs.  when you are not transmitting, even if the value is very 
low (i.e. low enough not to light a single led).


Which range led is lit on the front panel?

John
AC0ZG

On 1/21/2014 9:39 PM, Bob KD7YZ wrote:

It's the correct sensor. The W2 reads the K3 output. But when it's
cabled to the Elecraft 6m Transverter, there is no power reading. I
sometimes see a few green LED's for 1.3 to 1.5 VSWR. Never a power reading.



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Re: [Elecraft] W2 serial command questions

[Vic Rosenthal K2VCO]

I spoke to an Elecraft employee about bugs in the W2, and he confirmed 
that there are a number of them and that they are planning to come out 
with a new version of the firmware at some point (I don't want to say 
'real soon now').


The manual IS incorrect about the alarm needing to be turned on each 
time you power on. In a previous firmware update they made it 'sticky' 
so that once you enable it, it stays enabled until you turn it off.


On 1/19/2014 7:20 AM, Pierfrancesco Caci wrote:


Hello,
I'm playing with the serial commands for the W2 wattmeter.
First question, how often can I poll it? My main loop polls for status,
forward, reverse and swr, then waits for a keypress for 0.2 seconds.
Is it safe to reduce to 0.1 s?
Then, in the output of the 'i' command, bytes 2 and 8 seem to have the
same info, except that 8 also tells me if there's no sensor connected at
all. So, what's the purpose of byte 2?
The manual says that command 'c' would respond with 'c;' if alarm was
not active. Instead, I only get ';'. Looks like a bug in the manual?
Sometimes, one single 'c' is not enough to clear the alarm, I have to
repeat the command.
And about the alarm, the owner's manual says:
The SWR Alarm function must be enabled each time the W2 power is turned
on.
Instead, I see that it starts in Alarm ON mode. I can see this by
tripping it, and also the first 'a' command will report 'a0', which
means the alarm has been deactivated. Am I misunderstanding the manual?

Thanks

Pf





--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/

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Re: [Elecraft] W2 serial command questions

[Pierfrancesco Caci]

 Vic == Vic Rosenthal K2VCO k2vco@gmail.com writes:


Vic I spoke to an Elecraft employee about bugs in the W2, and he confirmed
Vic that there are a number of them and that they are planning to come out
Vic with a new version of the firmware at some point (I don't want to say
Vic real soon now').

How long ago? Seems firmware hasn't been updated in a while. 

Vic The manual IS incorrect about the alarm needing to be turned on each
Vic time you power on. In a previous firmware update they made it 'sticky'
Vic so that once you enable it, it stays enabled until you turn it off.

Many thanks Vic, I can see that Alarm is saved to eprom. I didn't notice
this during previous tests. 
I guess fixing the manual is easier than fixing the code ;-)

Pf

-- 
Pierfrancesco Caci, ik5pvx
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Re: [Elecraft] W2 serial command questions

[Vic Rosenthal K2VCO]

I can't speak for Elecraft, but the conversation took place in the last 
couple of weeks. I also suggested that they add a net power display 
mode (forward - reflected) like the Alpha 4510 and Telepost LP-100A 
wattmeters have, since this more closely approximates what we understand 
as power output than forward power whenever the SWR is greater than unity.


On 1/19/2014 9:33 AM, Pierfrancesco Caci wrote:

Vic == Vic Rosenthal K2VCO k2vco@gmail.com writes:



 Vic I spoke to an Elecraft employee about bugs in the W2, and he confirmed
 Vic that there are a number of them and that they are planning to come out
 Vic with a new version of the firmware at some point (I don't want to say
 Vic real soon now').

How long ago? Seems firmware hasn't been updated in a while.

 Vic The manual IS incorrect about the alarm needing to be turned on each
 Vic time you power on. In a previous firmware update they made it 'sticky'
 Vic so that once you enable it, it stays enabled until you turn it off.

Many thanks Vic, I can see that Alarm is saved to eprom. I didn't notice
this during previous tests.
I guess fixing the manual is easier than fixing the code ;-)

Pf



--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/

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Re: [Elecraft] W2 Wattmeter alarm function doesn't activate on hogh SWR

[Ken Roberson]

Vic,

OK , Same here , And right when I'm setup to use that feature .

73 Ken K5DNL / WG2XXM





On Saturday, December 28, 2013 10:43 PM, Vic Rosenthal K2VCO 
k2vco@gmail.com wrote:
 
Hello folks,

I sent this to Support, but they are probably resting up until Monday, 
so I thought I would ask here. Has anyone had this problem with the W2 
wattmeter?

I just assembled my unit. It seems to work correctly except that I can't 
enable the alarm function.

1. When I turn the W2 on, I hear the relay click, and it does interrupt 
the ptt at this point.

2. The W2 utility program (USB, running on XP) finds and communicates 
with the W2. When I click on the ALARM button, the label changes from 
OFF to ON.

3. But when I test it by transmitting into a 'wrong' antenna (SWR=13:1) 
it does not flash LEDs or activate the relay.

4. Firmware is 1.00 and utility program is also 1.00.

Has anyone had a similar problem?
-- 
Vic K2VCO
Fresno CA
http://www.qsl.net/k2vco/
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Re: [Elecraft] W2 Wattmeter alarm function doesn't activate on hogh SWR

[Vic Rosenthal K2VCO]

Here is a reply that I received from another fellow on the reflector. I 
followed his advice and it solved the problem (it was a direct reply so 
I won't give his name or call, but I was very grateful for his help)!


-
You have to set the alarm SWR level by using the “[“ and “]” commands 
(no quotes) in the W2 Utility program. [ lowers the SWR, ] raises it. 
The initial value in the firmware is undefined, so you have to set it 
yourself. You may have to issue multiple [ or ] commands to get a valid 
response from the W2. This is a known firmware bug which is being worked 
on, as is a few others. Another bug is that after the SWR alarm trips, 
you have to push the “sensor” button multiple times to get the W2 to 
reset, but if you have set PWR (serial) to PEP in the W2 GUI application 
(not utility program), it will reset after one attempt.



Note that this is done using the W2 Utility program, which is not the 
same as the W2 interface program. They are both downloadable from th 
Elecraft site.


On 12/29/2013 7:10 AM, Ken Roberson wrote:

Vic,

OK , Same here , And right when I'm setup to use that feature .

73 Ken K5DNL / WG2XXM



On Saturday, December 28, 2013 10:43 PM, Vic Rosenthal K2VCO
k2vco@gmail.com wrote:
Hello folks,

I sent this to Support, but they are probably resting up until Monday,
so I thought I would ask here. Has anyone had this problem with the W2
wattmeter?

I just assembled my unit. It seems to work correctly except that I can't
enable the alarm function.

1. When I turn the W2 on, I hear the relay click, and it does interrupt
the ptt at this point.

2. The W2 utility program (USB, running on XP) finds and communicates
with the W2. When I click on the ALARM button, the label changes from
OFF to ON.

3. But when I test it by transmitting into a 'wrong' antenna (SWR=13:1)
it does not flash LEDs or activate the relay.

4. Firmware is 1.00 and utility program is also 1.00.

Has anyone had a similar problem?
--
Vic K2VCO
Fresno CA
http://www.qsl.net/k2vco/


--
Vic K2VCO
Fresno CA
http://www.qsl.net/k2vco/
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Re: [Elecraft] W2 Wattmeter idea

[Fred Smith]

I use an Alpha 4510 Power/SWR Meter and it does have a power
delivered/forward setting just for that. That setting takes all of these
factors into consideration for the final product it reads from .03-3000w.
That is the reason for my trusted Oak Hills Research WM-2 QRP wattmeter
still in line for my KX3.


73,
Fred/N0AZZ
K3 Ser # 6730--KX3 # 5210--K2/100 # 6470-KAT100
P3/SVGA--KAT500--W2
Amps Elecraft KPA500 HF/6m--Alpha's 9500 HF--87A HF--Mirage B-5030-G
300+w--(2) B-5016-G's 165w 2m

 

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Vic Rosenthal K2VCO
Sent: Tuesday, December 24, 2013 8:08 PM
To: Elecraft Reflector
Subject: [Elecraft] W2 Wattmeter idea

I just ordered a W2 wattmeter, haven't received it yet, and I already want
to change something!

It displays forward power and SWR. When the SWR is 1:1, then the power
output of the transmitter is equal to the forward power. But when it is
greater than 1:1, then the actual power output is the forward power LESS the
reflected power.

I would like an option to display this output power, forward less reflected.
This could probably be done in the firmware, a SMOP as Wayne likes to say.

I realize that this does not tell you the power delivered to the antenna,
for which you would need to know the line loss. But it is still a more
useful indication than just the forward power.

--
Vic K2VCO
Fresno CA
http://www.qsl.net/k2vco/
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Re: [Elecraft] W2 Wattmeter idea

[Milan Gütter, OK7GU]

Dr Vic,

Iam using K2 and LP-100A Wattmeter for my remotely controlled station, 
both works fine.

The K2 accuracy for SWR upto 2 is enough good (10%).

If you need more sophisticated Wattmeter, use the LP-100A.
http://www.telepostinc.com/lp100.html

LP-100A can indicate the pure FWD power. And many other parameters.

73, MX and HNY2014

Milan, OK7GU
www.ok7gu.com







--

Message: 3
Date: Tue, 24 Dec 2013 18:08:17 -0800
From: Vic Rosenthal K2VCO k2vco@gmail.com
To: Elecraft Reflector elecraft@mailman.qth.net
Subject: [Elecraft] W2 Wattmeter idea
Message-ID: 52ba3e11.7060...@gmail.com
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

I just ordered a W2 wattmeter, haven't received it yet, and I already
want to change something!

It displays forward power and SWR. When the SWR is 1:1, then the power
output of the transmitter is equal to the forward power. But when it is
greater than 1:1, then the actual power output is the forward power LESS
the reflected power.

I would like an option to display this output power, forward less
reflected. This could probably be done in the firmware, a SMOP as
Wayne likes to say.

I realize that this does not tell you the power delivered to the
antenna, for which you would need to know the line loss. But it is still
a more useful indication than just the forward power.



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Re: [Elecraft] W2 Wattmeter idea

[kd7gc]

For what it might be worth, my Power Master 2 from Array Solutions has an
option called Net Power that does exactly what you want.

 

73

KD7GC

 

 

Alan R. Downing

Phoenix, AZ

 

From: Vic K2VCO-2 [via Elecraft]
[mailto:ml-node+s365791n7582024...@n2.nabble.com] 
Sent: Tuesday, December 24, 2013 7:09 PM
To: kd7gc
Subject: W2 Wattmeter idea

 

I just ordered a W2 wattmeter, haven't received it yet, and I already 
want to change something! 

It displays forward power and SWR. When the SWR is 1:1, then the power 
output of the transmitter is equal to the forward power. But when it is 
greater than 1:1, then the actual power output is the forward power LESS 
the reflected power. 

I would like an option to display this output power, forward less 
reflected. This could probably be done in the firmware, a SMOP as 
Wayne likes to say. 

I realize that this does not tell you the power delivered to the 
antenna, for which you would need to know the line loss. But it is still 
a more useful indication than just the forward power. 

-- 
Vic K2VCO 
Fresno CA 
http://www.qsl.net/k2vco/
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Re: [Elecraft] W2 Question

[Don Wilhelm]

The internal tuner does not change the SWR on the feedline (at the 
output of the tuner).  It will change the SWR that is at the input of 
the tuner, and that is the SWR indicated by the K3.  The W2 is 
indicating the SWR at the tuner output (and that will not change with 
tuning).


For those who want to have the feedline SWR and the power output 
displayed, the W2 is the way to go, if that does not interest you, 
then it may not be of value to you.


73,
Don W3FPR

On 10/24/2013 2:00 PM, Richard Thorpe wrote:

On a particular band I use the K3’s internal antenna tuner to tune the SWR to 
1.0-1 or so it says.  I have a W2 attached inline and it reads an SWR of 1.7-1+ 
for the same setting.  Which is correct? can the W2 readings be 
adjusted/reconciled with the readings on the K3?  is there a problem?  What is 
the point of the W2 if its it does not reflect ( no pun intended) the correct 
readings?




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Re: [Elecraft] W2 Question

[Rick Bates]

The short answer is that they are both correct.  Each measures the SWR AT THAT 
POINT in the system. 

Rick wa6nhc

Tiny iPhone 5 keypad, typos are inevitable

 On Oct 24, 2013, at 11:00 AM, Richard Thorpe kis...@me.com wrote:
 
 On a particular band I use the K3’s internal antenna tuner to tune the SWR to 
 1.0-1 or so it says.  I have a W2 attached inline and it reads an SWR of 
 1.7-1+ for the same setting.  Which is correct? can the W2 readings be 
 adjusted/reconciled with the readings on the K3?  is there a problem?  What 
 is the point of the W2 if its it does not reflect ( no pun intended) the 
 correct readings?
 
 R Thorpe K6CG
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Re: [Elecraft] W2 Question

[Fred Jensen]

On 10/24/2013 11:00 AM, Richard Thorpe wrote:

On a particular band I use the K3’s internal antenna tuner to tune
the SWR to 1.0-1 or so it says.  I have a W2 attached inline and it
reads an SWR of 1.7-1+ for the same setting.  Which is correct? can
the W2 readings be adjusted/reconciled with the readings on the K3?
is there a problem?  What is the point of the W2 if its it does not
reflect ( no pun intended) the correct readings?


They're both correct.  The K3's internal tuner matches whatever 
impedance it actually sees at the antenna connector to the K3's output 
impedance [50 ohms] and thus the K3 sees 1.0:1 SWR.  Neither it, nor 
any other such tuner at the rig does anything to the SWR on the coax, 
and the W2 is measuring the SWR on the coax.


73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org

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Re: [Elecraft] W2 PROBLEM (Larry Royster)

[Gerry McGowan]

Hi,
after carrying out on air tests with several K3-100s  I found that a PSK signal 
becomes unacceptably wide over about 48 Watts out (indicated on the K3 meter 
and/or a power meter).

80 Watts out would not get you any friends on a crowded band.

Similarly, the internal 10 Watt amp starts to spread with PSK at around 5watts, 
so with the K3 for PSK best to avoid power over about 50 watts and between 5 
and 12 watts (when the 100W PA kicks in).

73
Gerry M0VAA
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Re: [Elecraft] W2 PROBLEM (Larry Royster)

[Gerald Manthey]

Thank you for sharing your findings .
I find on my K2/10 5 watts is good. On K2/100 and K3 25 watts is good. My
KX3 is good at 4 watts , I think it is lower because max power is 10 watts.
73's Gerald
 On Sep 19, 2013 1:36 PM, Gerry McGowan m0...@yahoo.com wrote:

 Hi,
 after carrying out on air tests with several K3-100s  I found that a PSK
 signal becomes unacceptably wide over about 48 Watts out (indicated on the
 K3 meter and/or a power meter).

 80 Watts out would not get you any friends on a crowded band.

 Similarly, the internal 10 Watt amp starts to spread with PSK at around
 5watts, so with the K3 for PSK best to avoid power over about 50 watts and
 between 5 and 12 watts (when the 100W PA kicks in).

 73
 Gerry M0VAA
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Re: [Elecraft] W2 PROBLEM

[Bill Frantz]

Have you checked the ALC setting? You should have 4 bars of ALC 
showing when you transmit with the 5th bar flashing. You can use 
TX test mode to set the ALC without going out on the air.


If you don't have the ALC set correctly, the K3 will start 
transmitting at less than the power it is set at and slowly 
increase power as the power measurement feedback corrects the 
output power.


Cheers - Bill, AE6JV

On 9/18/13 at 2:37 PM, effectiveh...@bellsouth.net (Larry 
Royster) wrote:


I HAVE A WATT METER THAT SEEMS TO WORK OKAY, EXCEPT WHEN I 
FIRST TRANSMIT, USING PSK31 MODE. IT TAKES THREE OR FOUR 
TRANSMITS BEFORE IT INDICATES THE POWER LEVEL SHOWN ON MY K3, 
WHICH IS EITHER 40 OR 80 WATTS. I HAVE AN ELECRAFT POWER UNIT 
THAT IS IN THE CIRCUIT BT ON STANDBY.  WHAT AM I MISSING HERE?


---
Bill Frantz| Re: Computer reliability, performance, and security:
408-356-8506   | The guy who *is* wearing a parachute is 
*not* the

www.pwpconsult.com | first to reach the ground.  - Terence Kelly

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Re: [Elecraft] W2 PROBLEM

[Ron D'Eau Claire]

It's also quite possible that your wattmeter is trying to display average
power output, in which case it takes a while to display the correct output. 

Check the manual for that wattmeter and see what it says. Usually you have
the choice between peak (which you should be using) and average. 

73 Ron AC7AC

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bill Frantz
Sent: Wednesday, September 18, 2013 2:47 PM
To: Larry Royster
Cc: elacraft reflrvto 2
Subject: Re: [Elecraft] W2 PROBLEM

Have you checked the ALC setting? You should have 4 bars of ALC showing when
you transmit with the 5th bar flashing. You can use TX test mode to set the
ALC without going out on the air.

If you don't have the ALC set correctly, the K3 will start transmitting at
less than the power it is set at and slowly increase power as the power
measurement feedback corrects the output power.

Cheers - Bill, AE6JV

On 9/18/13 at 2:37 PM, effectiveh...@bellsouth.net (Larry
Royster) wrote:

I HAVE A WATT METER THAT SEEMS TO WORK OKAY, EXCEPT WHEN I FIRST 
TRANSMIT, USING PSK31 MODE. IT TAKES THREE OR FOUR TRANSMITS BEFORE IT 
INDICATES THE POWER LEVEL SHOWN ON MY K3, WHICH IS EITHER 40 OR 80 
WATTS. I HAVE AN ELECRAFT POWER UNIT THAT IS IN THE CIRCUIT BT ON 
STANDBY.  WHAT AM I MISSING HERE?

---
Bill Frantz| Re: Computer reliability, performance, and security:
408-356-8506   | The guy who *is* wearing a parachute is 
*not* the
www.pwpconsult.com | first to reach the ground.  - Terence Kelly

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Re: [Elecraft] W2 PROBLEM

[Michael Eberle]

Holding the SENSOR and RANGE buttons simultaneously changes between 
peak-hold and average.  You might also want to set the range to 200 
since 'auto' may take a couple seconds to determine the correct range 
and 2KW would be too high for just 40 or 80 watts.


-Mike-
KI0HA

On 9/18/2013 9:05 PM, Ron D'Eau Claire wrote:

It's also quite possible that your wattmeter is trying to display average
power output, in which case it takes a while to display the correct output.

Check the manual for that wattmeter and see what it says. Usually you have
the choice between peak (which you should be using) and average.

73 Ron AC7AC

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bill Frantz
Sent: Wednesday, September 18, 2013 2:47 PM
To: Larry Royster
Cc: elacraft reflrvto 2
Subject: Re: [Elecraft] W2 PROBLEM

Have you checked the ALC setting? You should have 4 bars of ALC showing when
you transmit with the 5th bar flashing. You can use TX test mode to set the
ALC without going out on the air.

If you don't have the ALC set correctly, the K3 will start transmitting at
less than the power it is set at and slowly increase power as the power
measurement feedback corrects the output power.

Cheers - Bill, AE6JV

On 9/18/13 at 2:37 PM, effectiveh...@bellsouth.net (Larry
Royster) wrote:


I HAVE A WATT METER THAT SEEMS TO WORK OKAY, EXCEPT WHEN I FIRST
TRANSMIT, USING PSK31 MODE. IT TAKES THREE OR FOUR TRANSMITS BEFORE IT
INDICATES THE POWER LEVEL SHOWN ON MY K3, WHICH IS EITHER 40 OR 80
WATTS. I HAVE AN ELECRAFT POWER UNIT THAT IS IN THE CIRCUIT BT ON
STANDBY.  WHAT AM I MISSING HERE?

---
Bill Frantz| Re: Computer reliability, performance, and security:
408-356-8506   | The guy who *is* wearing a parachute is
*not* the
www.pwpconsult.com | first to reach the ground.  - Terence Kelly

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Re: [Elecraft] W2 PROBLEM

[Hop - AC8NS]

- Original Message - 
From: Larry Royster effectiveh...@bellsouth.net

To: elacraft reflrvto 2 elecraft@mailman.qth.net
Sent: Wednesday, September 18, 2013 5:37 PM
Subject: [Elecraft] W2 PROBLEM


I HAVE A WATT METER THAT SEEMS TO WORK OKAY, EXCEPT WHEN I FIRST TRANSMIT, 
USING PSK31 MODE. IT TAKES THREE OR FOUR TRANSMITS BEFORE IT INDICATES THE 
POWER LEVEL SHOWN ON MY K3, WHICH IS EITHER 40 OR 80 WATTS. I HAVE AN 
ELECRAFT POWER UNIT THAT IS IN THE CIRCUIT BT ON STANDBY.  WHAT AM I 
MISSING HERE? BEST, K4MWE

__


Umm, lower case letters?

73 de AC8NS
Hop

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Re: [Elecraft] W2 - Possible Addition to Station

[Bill]

Jim,

I have used my W2 just as you suggest.  Also others' comments reflect my
use.  I have the Vhf  module for 2 meters, and the QRO for low bands.  I
bought the kit.  The W2 also gives you some shut down features to protect
your equipment when in the key line that I use as well.

Bill
K9YEQ

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Bennett
Sent: Monday, September 02, 2013 5:17 PM
To: Elecraft Reflector Reflector
Subject: [Elecraft] W2 - Possible Addition to Station

Currently my station includes a K3/100, P3, Ameritron AL-811 amplifier, and
the LDG AT-600 ProII auto tuner with the M-600 analog display. I have the
10-watt 2 meter module installed in the K3. Further, I am in the process of
building the 80-watt linear amplifier for 2 meters that was presented by
W6PQL in the May 2013 issue of QST.

The above equipment does not have the ability to display SWR or power output
on 2 meters with the amplifier online. So, I've been looking at something to
fill this gap. One option was the $80 MFJ-873 V/U meter. A second, much more
expensive option is the Elecraft W2. 

I'm not a big fan of a string of LED's for measurement of anything, as it
simply does not give the resolution one would like to have. I dealt with
that when I had the Elecraft KPA500 last year. Nice to look at, but not
overly big on resolution. What I DO like about the W2 is the software that
is available from the web site - the W2 Interface Program. In addition to
bar graphs for SWR and Power Fwd/Ref, there is a numeric display with a LOT
more resolution than one normally would see with any analog meter. Since I
nearly always have my MacBook Air turned on when I operate, needing to have
a computer for higher resolution than LED's isn't an issue for me.

Out of 15 reviews on eHam.net, only two folks were displeased with the W2 -
one got a factory-assembled unit that was DOA and another fellow didn't care
for the LED operation. Discounting those two, the reviews were very
positive. HOWEVER, I've seen several W2 units up for sale here on the
reflector, and am wondering what's up with this product?  Are there problems
that haven't been noted on eHam.net, or are folks simply unloading unneeded
equipment?

I had thought that if I went for a W2, I'd initially get it with the VHF/UHF
coupler, connecting it between my K3's 2M module and the 80-watt amp. If I
liked the way it worked, I could opt for the second coupler (QRO 1.8-54MHz),
sell the LDG M-600 meter, and put that coupler between the K3 and the LDG
auto tuner. The few pennies I'd get for the M-600 would help offset the
price of the W2. Kinda :-)

Thoughts on the W2, folks?

Jim / W6JHB
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Re: [Elecraft] W2 - Possible Addition to Station

[Jim Bennett]

OK - looks like maybe I jumped the gun, so to speak. I just went back into the 
archives and found several discussions on the W2; it appears that no one is 
ready to head off to the Elecraft HQ with pitchforks and burning torches. In 
fact, I didn't see any negative comments at all - only good stuff, so if I can 
talk the XYL into my dropping some moola on yet more radio equipment, I'll 
probably be ordering a W2 in a few days.

Jim / W6JHB
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Re: [Elecraft] W2 - Possible Addition to Station

[Don Wilhelm]

Jim,

Under normal operation, the resolution between an SWR of 1.3 and 1.5 is 
not of impo0rtance (pardon those who always strive for an SWR of 1.0).  
At HF that amount of resolution is unimportant unless you are doing 
measurements on your antenna system (that is different from normal 
operating) - and in that case, you would likely be using the computer 
connection to provide you with the greater resolution values.


I sense that several hams are offering their W2 wattmeters for sale 
because they have purchased the KPA500 and/or the KAT500 and find that 
the SWR display on those devices renders the use of the W2 redundant.


The W2 *is* an accurate wattmeter.  I cannot comment on the accuracy of 
the MFJ unit.  In general, wattmeters are getting more accurate, but 
some are still rated at 20% of the full scale readings - that is typical 
for analog meter readouts.


So bottom line, do you want accuracy or do you want precision indication 
of power and SWR.  If your concern is for SWR only, keep in mind that 
almost all wattmeters are accurate when they read an SWR of 1.0.


73,
Don W3FPR

On 9/2/2013 6:17 PM, Jim Bennett wrote:

Currently my station includes a K3/100, P3, Ameritron AL-811 amplifier, and the 
LDG AT-600 ProII auto tuner with the M-600 analog display. I have the 10-watt 2 
meter module installed in the K3. Further, I am in the process of building the 
80-watt linear amplifier for 2 meters that was presented by W6PQL in the May 
2013 issue of QST.

The above equipment does not have the ability to display SWR or power output on 
2 meters with the amplifier online. So, I've been looking at something to fill 
this gap. One option was the $80 MFJ-873 V/U meter. A second, much more 
expensive option is the Elecraft W2.

I'm not a big fan of a string of LED's for measurement of anything, as it simply does not 
give the resolution one would like to have. I dealt with that when I had the Elecraft 
KPA500 last year. Nice to look at, but not overly big on resolution. What I DO like about 
the W2 is the software that is available from the web site - the W2 Interface Program. In 
addition to bar graphs for SWR and Power Fwd/Ref, there is a numeric display with a LOT 
more resolution than one normally would see with any analog meter. Since I 
nearly always have my MacBook Air turned on when I operate, needing to have a computer 
for higher resolution than LED's isn't an issue for me.




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Re: [Elecraft] W2 - Possible Addition to Station

[Buck k4ia]

I use both the W2 and the KAT500.  The W2 is closest to the antenna and 
tells me what the SWR really is.  The KAT500 tells me what the 
transmitter is seeing.  You really need both.


Buck
k4ia
K3 # 101  KX3 #715

On 9/2/2013 6:44 PM, Don Wilhelm wrote:

Jim,

Under normal operation, the resolution between an SWR of 1.3 and 1.5 is
not of impo0rtance (pardon those who always strive for an SWR of 1.0).
At HF that amount of resolution is unimportant unless you are doing
measurements on your antenna system (that is different from normal
operating) - and in that case, you would likely be using the computer
connection to provide you with the greater resolution values.

I sense that several hams are offering their W2 wattmeters for sale
because they have purchased the KPA500 and/or the KAT500 and find that
the SWR display on those devices renders the use of the W2 redundant.

The W2 *is* an accurate wattmeter.  I cannot comment on the accuracy of
the MFJ unit.  In general, wattmeters are getting more accurate, but
some are still rated at 20% of the full scale readings - that is typical
for analog meter readouts.

So bottom line, do you want accuracy or do you want precision indication
of power and SWR.  If your concern is for SWR only, keep in mind that
almost all wattmeters are accurate when they read an SWR of 1.0.

73,
Don W3FPR

On 9/2/2013 6:17 PM, Jim Bennett wrote:

Currently my station includes a K3/100, P3, Ameritron AL-811
amplifier, and the LDG AT-600 ProII auto tuner with the M-600 analog
display. I have the 10-watt 2 meter module installed in the K3.
Further, I am in the process of building the 80-watt linear amplifier
for 2 meters that was presented by W6PQL in the May 2013 issue of QST.

The above equipment does not have the ability to display SWR or power
output on 2 meters with the amplifier online. So, I've been looking at
something to fill this gap. One option was the $80 MFJ-873 V/U meter.
A second, much more expensive option is the Elecraft W2.

I'm not a big fan of a string of LED's for measurement of anything, as
it simply does not give the resolution one would like to have. I dealt
with that when I had the Elecraft KPA500 last year. Nice to look at,
but not overly big on resolution. What I DO like about the W2 is the
software that is available from the web site - the W2 Interface
Program. In addition to bar graphs for SWR and Power Fwd/Ref, there is
a numeric display with a LOT more resolution than one normally would
see with any analog meter. Since I nearly always have my MacBook Air
turned on when I operate, needing to have a computer for higher
resolution than LED's isn't an issue for me.




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Re: [Elecraft] W2 - Possible Addition to Station

[Don Wilhelm]

Buck,

I agree *if* one is interested in the SWR at the antenna side, but most 
are only concerned about the SWR that the transceiver or amplifier sees, 
and that is at the input to the tuner.  Both the KPA500 and the KAT500 
indicate the SWR between the PA and the tuner.


Without the KPA500 and the KAT500, the K3/100 also indicates the SWR 
between the PA and the tuner (unless the tuner is in Bypass)/


A low SWR indication at those points indicate that the tuner has done 
its job, and the PA transistors are happy with a load that is within 
their design parameters.


So the answer is that it all depends on what the operator wants to see.

73,
Don W3FPR

On 9/2/2013 6:54 PM, Buck k4ia wrote:
I use both the W2 and the KAT500.  The W2 is closest to the antenna 
and tells me what the SWR really is.  The KAT500 tells me what the 
transmitter is seeing.  You really need both.




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Re: [Elecraft] W2 - Possible Addition to Station

[Jim Bennett]

Well, as I mentioned, I'm building the 80 watt amp from that QST article, and 
need a way to do the initial tuning procedure. Got to have some sort of watt 
meter, and the combination of SWR and Power (as most units provide) is 
desirable. I agree that the difference between a 1.2:1 and 1.4:1 SWR is pretty 
much irrelevant, but seeing an accurate change in output power can make a 
difference in how the amplifier has been adjusted for peak output power. The 
LED bars, with the VHF sensor, are only going to show me a change of 10 watts 
per segment, while the computer display has a tad more resolution. The W2 
appears to be a very nice piece of equipment, although it does hurt the 
pocketbook. :-)

Jim / W6JHB
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Re: [Elecraft] W2 wattmeter

[Fred Smith]

My W2 seems to read about as well as my Bird wattmeter from QRP to QRO is it
as good as a Oak Hills Research's QRP WM-2 no but few are. Is it an Alpha
4510 no but reads close to mine at a fraction of the cost.

I have mine from 1/2w -1500w without a problem for the money IMHO hard to
beat and I have 7-8 around here. It's a keeper for sure right now it's
monitoring my K2 and KX3 I have 2 sensors.


73,
Fred/N0AZZ
K3 Ser #'s 6730/5299--KX3 # 2573--K2/100--KAT100
P3/SVGA--KPA500--KAT500--W2




-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Stephen Selberg
Sent: Friday, June 14, 2013 11:49 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] W2 wattmeter

Greetings,

Thinking of picking up the W2 wattmeter to go in the shack with the rest of
my gear (and future K3 and KPA500some day). I was reading the reviews on
eham, but still had a few questions I didn't see there.

I was curious about the accuracy of the meter and how well the peak hold
function works. I've played with other meters where the peak hold didn't
play well. Any input would be great.

Thanks and 73,

Steve KS6PD

KX3 #3604
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Re: [Elecraft] W2 users

[Fred Smith]

I do not have to many other things on 3 monitors running.


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David Bunte
Sent: Saturday, June 15, 2013 6:03 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] W2 users

I wonder if W2 users keep the utility up on your PC screen during normal
operation, so you can see greater resolution of your pwr  swr readings than
the LEDs provide.

Dave - K9FN
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Version: 2013.0.2904 / Virus Database: 3199/6412 - Release Date: 06/14/13

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Re: [Elecraft] W2 wattmeter

[Goldtr8 (KD8NNU)]

Mine works great and comparing readings to my other equipment it appears 
spot on.   From barefoot low power on the k3 to my amp on.   I use the peak 
function all the time as I do a lot of SSB and it just makes me feel good.


I have the 2kw sensor.

It also helped me on 6m as I was running the k3 at 80 watts and only reading 
50w peak on the w2.   After removing all the stuff between the k3 and the w2 
(amp  anc) I got my whole 80w at the w2 sensor.   So it showed me a 30w 
loss in the system on 6m so that to me is pretty accurate.


Cheers  Beers
~73
Don
KD8NNU
-.- -.. ---.. -. -. ..-
-Original Message- 
From: Stephen Selberg

Sent: Saturday, June 15, 2013 12:48 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] W2 wattmeter

Greetings,

Thinking of picking up the W2 wattmeter to go in the shack with the rest of
my gear (and future K3 and KPA500some day). I was reading the reviews on
eham, but still had a few questions I didn't see there.

I was curious about the accuracy of the meter and how well the peak hold
function works. I've played with other meters where the peak hold didn't
play well. Any input would be great.

Thanks and 73,

Steve KS6PD

KX3 #3604
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Re: [Elecraft] W2 users

[NZ0T]

I don't always keep the utility up but it's very useful when using an antenna
tuner or amplifier because of the increased resolution.

73 Bill NZ0T



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Re: [Elecraft] W2 wattmeter

[NZ0T]

Very happy with my W2.  I have the 2KW coupler.  Seems pretty accurate and
the LED display is great for casual use.  I don't always keep the display up
on the computer but it's very useful when greater resolution than the LED
display is desired.

73 Bill NZ0T



--
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Re: [Elecraft] W2 wattmeter

[Fred Smith]

Bill is 100% right on about the W2,it is most useful on screen for extreme
QRP if you don't have a WM-2 QRP meter. But like I said earlier it is very
close for all ranges both of my couplers are 2k's but still not bad for QRP.


73,
Fred/N0AZZ
K3 Ser #'s 6730/5299--KX3 # 2573--K2/100 # 6470-KAT100
P3/SVGA--KPA500--KAT500--W2



-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of NZ0T
Sent: Saturday, June 15, 2013 7:16 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] W2 wattmeter

Very happy with my W2.  I have the 2KW coupler.  Seems pretty accurate and
the LED display is great for casual use.  I don't always keep the display up
on the computer but it's very useful when greater resolution than the LED
display is desired.

73 Bill NZ0T



--
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Re: [Elecraft] W2 wattmeter

[Donald Butler]

I have two W2 meters and I like them  .. But I do not rely upon them for
accurate power readings.. My more practical use is to use my peripheral
vision to keep tabs on what's going on while I'm on the air and be alert for
unexpected changes.

I think the Bird 43, when fully calibrated, claims plus or minus 5% accuracy
at full scale on their analog dial.

The W2 is probably close to that, but not quite (maybe 6% at best) ... there
are 17 leds on the 0-20 watt meter scale  .. Doing the math, on the 2KW
scale, that's about 118 watts per LED ... so the power has to increase about
118 watts before the next LED will light up, etc., etc.Yes, you can get
a reading of presumed accuracy to the nearest watt if you us the W2 software
and keep a window running on your computer  . but the LED display itself is
only capable of reading plus or minus 118 of actual wattage on the 2 KW
scale.. And I've never bothered to calibrate to see what it takes for the
next LED to light up .. Does it change when you (1) just cross the new
threshold, (2) hit the midrange area of the next step, or (3) go the full
distance.Bottom line, it really doesn't matter, but I do not use a W2 to
obtain accurate power readings just from the LED display.

Don, N5LZ

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Fred Smith
Sent: Saturday, June 15, 2013 8:28 AM
To: 'NZ0T'; elecraft@mailman.qth.net
Subject: Re: [Elecraft] W2 wattmeter

Bill is 100% right on about the W2,it is most useful on screen for extreme
QRP if you don't have a WM-2 QRP meter. But like I said earlier it is very
close for all ranges both of my couplers are 2k's but still not bad for QRP.


73,
Fred/N0AZZ
K3 Ser #'s 6730/5299--KX3 # 2573--K2/100 # 6470-KAT100
P3/SVGA--KPA500--KAT500--W2



-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of NZ0T
Sent: Saturday, June 15, 2013 7:16 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] W2 wattmeter

Very happy with my W2.  I have the 2KW coupler.  Seems pretty accurate and
the LED display is great for casual use.  I don't always keep the display up
on the computer but it's very useful when greater resolution than the LED
display is desired.

73 Bill NZ0T



--
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http://elecraft.365791.n2.nabble.com/W2-wattmeter-tp7575272p7575286.html
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Re: [Elecraft] W2 wattmeter

[Stephen Selberg]

Thanks for all the feed back! Looks like I'll be taking the 30 minute drive
to Watsonville this week.

Steve KS6PD

On Saturday, June 15, 2013, Donald Butler wrote:

 I have two W2 meters and I like them  .. But I do not rely upon them for
 accurate power readings.. My more practical use is to use my peripheral
 vision to keep tabs on what's going on while I'm on the air and be alert
 for
 unexpected changes.

 I think the Bird 43, when fully calibrated, claims plus or minus 5%
 accuracy
 at full scale on their analog dial.

 The W2 is probably close to that, but not quite (maybe 6% at best) ...
 there
 are 17 leds on the 0-20 watt meter scale  .. Doing the math, on the 2KW
 scale, that's about 118 watts per LED ... so the power has to increase
 about
 118 watts before the next LED will light up, etc., etc.Yes, you can get
 a reading of presumed accuracy to the nearest watt if you us the W2
 software
 and keep a window running on your computer  . but the LED display itself is
 only capable of reading plus or minus 118 of actual wattage on the 2 KW
 scale.. And I've never bothered to calibrate to see what it takes for the
 next LED to light up .. Does it change when you (1) just cross the new
 threshold, (2) hit the midrange area of the next step, or (3) go the full
 distance.Bottom line, it really doesn't matter, but I do not use a W2
 to
 obtain accurate power readings just from the LED display.

 Don, N5LZ

 -Original Message-
 From: elecraft-boun...@mailman.qth.net javascript:;
 [mailto:elecraft-boun...@mailman.qth.net javascript:;] On Behalf Of
 Fred Smith
 Sent: Saturday, June 15, 2013 8:28 AM
 To: 'NZ0T'; elecraft@mailman.qth.net javascript:;
 Subject: Re: [Elecraft] W2 wattmeter

 Bill is 100% right on about the W2,it is most useful on screen for extreme
 QRP if you don't have a WM-2 QRP meter. But like I said earlier it is very
 close for all ranges both of my couplers are 2k's but still not bad for
 QRP.


 73,
 Fred/N0AZZ
 K3 Ser #'s 6730/5299--KX3 # 2573--K2/100 # 6470-KAT100
 P3/SVGA--KPA500--KAT500--W2



 -Original Message-
 From: elecraft-boun...@mailman.qth.net javascript:;
 [mailto:elecraft-boun...@mailman.qth.net javascript:;] On Behalf Of NZ0T
 Sent: Saturday, June 15, 2013 7:16 AM
 To: elecraft@mailman.qth.net javascript:;
 Subject: Re: [Elecraft] W2 wattmeter

 Very happy with my W2.  I have the 2KW coupler.  Seems pretty accurate and
 the LED display is great for casual use.  I don't always keep the display
 up
 on the computer but it's very useful when greater resolution than the LED
 display is desired.

 73 Bill NZ0T



 --
 View this message in context:
 http://elecraft.365791.n2.nabble.com/W2-wattmeter-tp7575272p7575286.html
 Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] W2 wattmeter

[Ron D'Eau Claire]

The W2 is great, but of marginal use for someone who has a rig with an ATU
built in. 

Indeed, one of the reoccurring mistakes Hams make is to put the external W2
between the rig and the antenna and then wonder why it shows a high SWR when
the internal ATU reports 1:1. 

The W2 or any watt/SWR meter must go between the transmitter and the antenna
matching network (ATU, etc.). Rigs like the K1, K2, KX1 and KX3 with built
in tuners do not offer a way to do that. 

The W2 and W1 are handy for checking the SWR on a 50-ohm coaxial antenna
feed line. That's best done with the meter at the antenna end of the feed
line, but a general idea of how well matched the antenna is to the feed line
can be had by monitoring the SWR at the rig end. 

It can also alert you to any unexpected changes in the antenna if you make a
note of the indicated SWR on each band. Any significant change in that SWR
indicates a significant change in the antenna, usually not for the best, Hi!


73 Ron AC7AC

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of NZ0T
Sent: Saturday, June 15, 2013 5:16 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] W2 wattmeter

Very happy with my W2.  I have the 2KW coupler.  Seems pretty accurate and
the LED display is great for casual use.  I don't always keep the display up
on the computer but it's very useful when greater resolution than the LED
display is desired.

73 Bill NZ0T


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Re: [Elecraft] W2 wattmeter

[John Marvin]

As you mentioned, the W2 utility shows greater accuracy, although just 
because it shows values in fractions of a watt, it doesn't mean that it 
is that accurate. However, the nice thing about the W2 is that it has a 
fairly nice calibration facility. So if you have or can borrow a higher 
accuracy meter then you can use that to improve the accuracy of the W2.


Also, I really like the fact that the SWR bridge sensor is remote from 
the unit. This allows a lot more flexibility for setup. In my case the 
cable was just a little too short, but I wondered if a CAT 5e patch 
cable would work. I did a little googling and saw an Elecraft employee 
recommending that option. I don't know how long you can go before it 
doesn't work or gives bad readings, but the patch cable I used was only 
2-3 feet longer than the cable supplied by Elecraft, and it didn't 
appear to affect the readings based on a simple before/after test.


Anyway, I think the W2 is a great product.  However, Elecraft recommends 
that it go between the amp and the ATU (Elecraft says that the accuracy 
really starts to suffer with high SWR). That means that it might not be 
very useful if I purchase a KXPA100 with the built in ATU.


John
AC0ZG

On 6/15/2013 9:34 AM, Donald Butler wrote:

I have two W2 meters and I like them  .. But I do not rely upon them for
accurate power readings.. My more practical use is to use my peripheral
vision to keep tabs on what's going on while I'm on the air and be alert for
unexpected changes.

I think the Bird 43, when fully calibrated, claims plus or minus 5% accuracy
at full scale on their analog dial.

The W2 is probably close to that, but not quite (maybe 6% at best) ... there
are 17 leds on the 0-20 watt meter scale  .. Doing the math, on the 2KW
scale, that's about 118 watts per LED ... so the power has to increase about
118 watts before the next LED will light up, etc., etc.Yes, you can get
a reading of presumed accuracy to the nearest watt if you us the W2 software
and keep a window running on your computer  . but the LED display itself is
only capable of reading plus or minus 118 of actual wattage on the 2 KW
scale.. And I've never bothered to calibrate to see what it takes for the
next LED to light up .. Does it change when you (1) just cross the new
threshold, (2) hit the midrange area of the next step, or (3) go the full
distance.Bottom line, it really doesn't matter, but I do not use a W2 to
obtain accurate power readings just from the LED display.

Don, N5LZ

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Fred Smith
Sent: Saturday, June 15, 2013 8:28 AM
To: 'NZ0T'; elecraft@mailman.qth.net
Subject: Re: [Elecraft] W2 wattmeter

Bill is 100% right on about the W2,it is most useful on screen for extreme
QRP if you don't have a WM-2 QRP meter. But like I said earlier it is very
close for all ranges both of my couplers are 2k's but still not bad for QRP.


73,
Fred/N0AZZ
K3 Ser #'s 6730/5299--KX3 # 2573--K2/100 # 6470-KAT100
P3/SVGA--KPA500--KAT500--W2



-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of NZ0T
Sent: Saturday, June 15, 2013 7:16 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] W2 wattmeter

Very happy with my W2.  I have the 2KW coupler.  Seems pretty accurate and
the LED display is great for casual use.  I don't always keep the display up
on the computer but it's very useful when greater resolution than the LED
display is desired.

73 Bill NZ0T



--
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Checked by AVG - www.avg.com
Version: 2013.0.2904 / Virus Database: 3199/6413 - Release Date: 06/15/13

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Re: [Elecraft] W2-A Watt Meter For Sale

[Randy Moore]

As of now the W2 is sold.  This list is great, it sold about ten minutes 
after I posted it.


Thanks to all that replied.

Randy Moore
AI4CO


On 4/24/2013 7:59 PM, Randy Moore wrote:
I have a W2-A watt meter with 2KW directional coupler that I want to 
sell so I can buy a T-1 ATU for my QRP rig.


Asking $160.00 + shipping from zip code 32312.

If interested email me.

Thanks,

Randy Moore
AI4CO

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Re: [Elecraft] W2 Interface Question

[NZ0T]

Well, dammit, the W2 window has reverted to being stuck in the upper left
hand corner of my Acer Aspire One again!  I have tried everything I can
think of in the display portion  of control panel even going to no desktop
(solid blue) and also trying the Windows XP theme which worked yesterday. 
Obviously this is an issue with XP and or the small Acer (10.1) netbook
screen and not the W2 problem.  Whatever I did yesterday worked for a time
but trying that again today is not working.  So any help from someone who
understands XP and the Acer better than me is greatly appreciated!



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Re: [Elecraft] W2 Interface Question

[David Ferrington, M0XDF]

I doubt very much that is a problem with the W2 software, more likely the 
window display software?
73 de David, M0XDF (K3 #174, P3 #108)

On 29 Dec 2012, at 15:41, NZ0T wrote:

 When I run the W2 interface the display is stuck in the upper left hand
 corner of my Acer Netbook's display.  Right clicking and trying to move does
 not work. I have tried deleting the program and the W2 utility and
 re-loading both with no luck.   The display has not always been stuck this
 way as I could move it about.  I have not changed any settings on the Acer
 that I can recall.  The netbook is an Acer Aspire One D255 running XP.  I'm
 using Firefox if that makes any difference.
 
 Any ideas?
 

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