Hi Gary,
never thought of it as a lab grade precision instrument. BTW, the
much celebrated Bird is like 5%(CW), 8%(PEP)? and10%(SWR) so not a
precision instrument either:
AFAIK the request was for a QRP wattmeter(not SWR),? so 5W: 100mW
is not QRP, I am wondering if it is supposed to work? at all.
When I would like something better I have a NanoVNA V2 Pro
(claimed 90dB dynamic range, see: ) but not handy for field and somewhat
delicate. No power reading either, I could only use a good analog
scope.
Anything better you will need deep pockets, that quickly becomes
*very* deep pockets.
How did you check accuracy at 100mw and below? Just curious about
the depth of your pockets...LOL
Giuseppe Marullo
IW2JWW - JN45RQ
PS: how do you enable the calibration menu? didn't check any doc
around
On 1/22/2024 5:50 PM, Gary W9TD wrote:
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Giuseppe,
I have this mini meter as well and checked it for accuracy. The
accuracy in power readings is very poor below about half a watt,
being 60% low at 100mW. Above half a watt, it reads between 20 and
10% low up to the 24-Watt level where it was still working. The
SWR reading has better accuracy as long as there is enough power
to indicate SWR.
There is a calibration function in its menu for which there is no
documentation. Any change I made to the calibration number did
modify the power reading but the SWR was always very wrong.
The unit runs for a very long time on the internal battery.
Gary
W9TD
