Jack,
At $700 I will stick with my W7ZOI power meter with its 40 dB power tap
and my Tandem Match! I have calibration data that Bob Friess provided
on my Power meter from 1 MHz to 500 MHz (and ham band intervals in
between). The Tandem Match tracks that data quite well in its basic
A few questions about the W2 meter:
1. The posted accuracy is +- 0.5 dB which I calculate as about +- 12 %. Is
this full scale accuracy and if so is half scale possibly more accurate or is
this the most accurate the meter is likely to be. I am not even sure if it
makes a difference for full
Message -
From: Phil Hystad k7...@comcast.net
To: Elecraft elecraft@mailman.qth.net
Sent: Wednesday, December 09, 2009 7:51 PM
Subject: [Elecraft] W2 Questions
A few questions about the W2 meter:
1. The posted accuracy is +- 0.5 dB which I calculate as about +- 12 %.
Is this full scale
, 2009 7:51 PM
Subject: [Elecraft] W2 Questions
A few questions about the W2 meter:
1. The posted accuracy is +- 0.5 dB which I calculate as about +- 12 %.
Is this full scale accuracy and if so is half scale possibly more accurate
or is this the most accurate the meter is likely to be. I
Subject: Re: [Elecraft] W2 Questions
Paul,
Thanks for your comments. And, in followup, if Elecraft were to make
a meter with reasonably high accuracy I presume that another display
method, other then LEDs, would be required. I think a high-resolution
LCD with nice color graphic renditions of power
Phil,
The W2 wattmeter is similar in its detector accuracy to the Tandem Match
(by John Grebenkemper KI6WX) in that its accuracy depends on matching
the detector diodes with the compensation diodes.
The Gold Standard of power measuring devices is the HP436A wattmeter,
and it has a stated
Within 0.5 dB worst case of the actual power being measured. Not of full
scale.
We actually do much better than that.
73, Eric
Phil Hystad wrote:
A few questions about the W2 meter:
1. The posted accuracy is +- 0.5 dB which I calculate as about +- 12 %. Is
this full scale accuracy and
We'll be making a number of improvements to W2 firmware in future
releases (starting in January). Firmware updates are very easy to do
on the W2, and the required serial cable is supplied.
For example, the last LED segment illuminated will be able to show a
range of intensities (from off to
- Original Message -
From: Phil Hystad k7...@comcast.net
To: Elecraft elecraft@mailman.qth.net
Sent: Wednesday, December 09, 2009 7:51 PM
Subject: [Elecraft] W2 Questions
A few questions about the W2 meter:
1. The posted accuracy is +- 0.5 dB which I
calculate as about +- 12
Don:
All I've done is read the spec sheet, but Minicircuits has a relatively
new sensitive termination wattmeter with USB interface for a quite
reasonable price, at least by Agilent standards.
http://www.minicircuits.com/pdfs/PWR-6G+.pdf -- it's a virtual
instrument as it consists of the
elecraft@mailman.qth.net
Sent: Wednesday, December 09, 2009 7:51 PM
Subject: [Elecraft] W2 Questions
A few questions about the W2 meter:
1. The posted accuracy is +- 0.5 dB which I
calculate as about +- 12 %.
Is this full scale accuracy and if so is half scale
possibly more accurate
Jack,
At $700 I will stick with my W7ZOI power meter with its 40 dB power tap
and my Tandem Match! I have calibration data that Bob Friess provided
on my Power meter from 1 MHz to 500 MHz (and ham band intervals in
between). The Tandem Match tracks that data quite well in its basic
12 matches
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