[Elecraft] Accuracy of Wattmeter W2 under 2 Watt

[Rick Robinson]

I don't have the paperwork in front of me but the Elecraft DL 1 dummy load
has provisions to measure power up to 20 watts with a 10%  accuracy. Just
use a dvm. They also make a WM1 that handles more power with a .5 dbm
accuracy.

On Sunday, October 25, 2015, Hajo Dezelski <dl1sdz at gmail.com> wrote:

> Hello,
>
> I have been using a wattmeter from Fox for powers under 1 Watt, but
> the display is too nervous and hard to read. So I stumbled over the
> Elecraft W2 and read that with the 200 W sensor, you can read also
> power levels under 2 Watt. This would be really helpful for I
> experiment with power levels down to 0.5 mW.
>
> So before I invest, let me just ask some questions:
>
> 1. Has someone compared the power indicatores for the levels of 100 -
> 1000 mW with a precise wattmeter? As far as I understood each led
> signifies 100 mW.
>
> 2. If I would use the computer readout: How precise is the output?
> Just 100 mW or ist it e.g. 147 mW?
>
> 3. I am working max. 10 Watt with the Kx3, but normally use only
> between 100 mW and 5 W max. Could I adjust  with the calibration of
> active sensor down to let's say 1 Watt instead of 2 Watt?
>
> 4. Is it possible to modify the transformer T1 and T2 of the sensor so
> that the range would be (20W - 2 W and 200 mW. Or is there a sensor
> like this available on request from Elecraft.
>
> I know a lot of questions, but as far as I can see this meter would be
> a real champion for QRPP and could be used with a WSPR TRX.
>
> 73 de
> Hajo (DL1SDZ)
>
> ---
> Cela est bien dit, mais il faut cultiver notre jardin.
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-- 
Rick, W8ZT

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