Hi Don,
My Bird analog meter and MFJ-828 digital meter were previously calibrated by
a friend and colleague with the proper tools. According to him, both should
have had a margin of error of about 5-7%. - perhaps 10% now given the time
that has elapsed. Regardless how accurate his claim was, I c
Hi Ken,
You're probably right; my analog Bird meter and my digital MFJ-828 were
calibrated to "lab standard" or so I believe. I had a buddy of mine who
happens to be a communications officer for UNICEF take my meters and
calibrate them against their lab-grade equipment a couple of years ago.
They
Hi James,
You're chasing your tail, me thinks ...
I'm a retired career two-way radio tech and a
fan of Bird meters, thought by many to be the
best in their price class, and they're rated at
+/- 5% of full scale ... if they're calibrated to a
lab standard ... which in itself isn't likely to be
Hi James,
You're chasing your tail, me thinks ...
I'm a retired career two-way radio tech and a
fan of Bird meters, thought by many to be the
best in their price class, and they're rated at
+/- 5% of full scale ... if they're calibrated to a
lab standard ... which in itself isn't likely to b
James,
There are too many variables to give you a good answer.
Are you using the lowest scale on your wattmeter? Is the difference
between the K3 power setting and your wattmeter reading less than 10% of
the wattmeter's full scale reading? If so, you can likely blame the
difference on your
Hi James:
Use the DL1 dummy load from Elecraft. Its a great diagnostic
tool. It has low inductive resistors 20 watts but will take 90 watts
for short periods. Its greatest feature IMHO is the terminals to
measure the RF voltage. It has much greater accuracy.Hook it
directly to
n...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of James Sarte
Sent: Friday, October 29, 2010 5:18 PM
To: The Smiths
Cc: Elecraft Reflector
Subject: Re: [Elecraft] K3: LPA power level accuracy?
No, wasn't aware of that. It's been a while since I've delved int
> > Date: Fri, 29 Oct 2010 17:00:21 -0400
> > From: k2qi....@gmail.com
> > To: Elecraft@mailman.qth.net
> > Subject: [Elecraft] K3: LPA power level accuracy?
>
> >
> > Hello fellow Elecrafters,
> >
> > Quick question - I've noticed that when
There's also an adjustment that you can make manually to move the power up or
down from what the meter is reflecting on the K3, have you tried that too?
> Date: Fri, 29 Oct 2010 17:00:21 -0400
> From: k2qi@gmail.com
> To: Elecraft@mailman.qth.net
> Subject: [Elecraft] K3
Hello fellow Elecrafters,
Quick question - I've noticed that when using the LPA, output power is
always slightly off compared to the reading given off by two fairly accurate
meters. For example, a constant carrier output of 5 watts always reads
about a half-watt less on the external meters. The
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