http://elecraft.85.s1.nabble.com/New-K3-built-can-I-reset-the-5w-calibration-tp7076112p7078392.html
If you get a reading of 50 watts the real power would fall in a range of less than 47.5
> Wait.
>
> Using a 100W slug, if you get a reading of 100 watts, the real power would be between
> 95 and 105 watts, right?
> If you get a reading of 50 watts the real power would fall in a range of less than 45
> to 55 watts?
>
> Not if the 5% at full scale is the best accuracy. Or did I misunderstand what you said?
>
> 73, Mike NF4L
>
>
> On 12/8/2011 11:59 PM, Eugene Balinski wrote:
>> The accuracy of Bird elements is typically +/- 5% of the
>> full scale value. For a 100 W Slug, that is +/- 5 Watts.
>> So theoretically speaking, with 5W in, and 0 registered
>> on the meter, the meter is still within its rated accuracy.
>>
>>
>> Additionally on the model 43 meter, there is meter scale
>> end compression. To get the most accurate reading, one
>> would want to have the 5W reading at the middle of the
>> meter range, which means that one would want a 10W slug.
>> Unfortunately I do not believe that Bird makes a 10W HF
>> slug any more. Perhaps they need an Elecraft W2 ??
>>
>> 73
>> K1NR
>>
>>
>> On Thu, 8 Dec 2011 16:47:27 -0600
>> Nate Bargmann<
[hidden email]> wrote:
>>>> From my experience, trying to measure 5W with a 100W
>>> element leads to
>>> very inaccurate readings. The Bird is most accurate when
>>> the reading is
>>> as near to full scale as possible. That means a 5W HF
>>> element (is that
>>> even available?) would be ideal provided no more than 5W
>>> is put through
>>> the meter. A 10W element would be less accurate but
>>> provide a safety
>>> margin for the meter. Even better would be to have both
>>> elements and
>>> use the 10W one to get in the ballpark and the 5W one for
>>> a final check.
>>>
>>> 73, de Nate N0NB>>
>>>
>>> --
>>>
>>> "The optimist proclaims that we live in the best of all
>>> possible worlds. The pessimist fears this is true."
>>>
>>> Ham radio, Linux, bikes, and more:
http://www.n0nb.us>>>
>
> ______________________________________________________________
> 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>