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W2 fault?

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STEPHEN BUNTING

W2 fault?

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!

It looks like I may have two issues - a duff connector on S1 and
potentially a calibration issue with the sensor? Does that sound
reasonable? What action can I take to fix that as the W2 is not designed to
be user serviceable? I am happy working with SMDs though!

73

Steve

M0BPQ
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Don Wilhelm-4

Re: W2 fault?

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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Michael Walker

Re: W2 fault?

I would send an email to [hidden email] 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 <[hidden email]> 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!
>>
>>
>>
>>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

STEPHEN BUNTING

Re: W2 fault?

In reply to this post by STEPHEN 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: