Re: Re: K3: S-meter calibration (redux)
Posted by
dj7mgq on
Jun 07, 2007; 7:38pm
URL: http://elecraft.85.s1.nabble.com/K3-S-meter-calibration-redux-tp448734p448746.html
Hi Mike,
> On this reflector, I'm surprised no one has mentioned the XG1 and XG2 kits that can be used to easily calibrate an S-meter *to* a known standard. I used the XG2 first to become acquainted with Elecraft kit building (now I can't get enough!), and then to check the meter on my FT-857D (which needs a slight adjustment as it's reading a tad high at 50uV).
Many rigs use the AGC voltage for the s-meter, which means often,
especially below S9, the curve is anything but 6dB per S-meter-unit. So
even if your rig does S9 correctly, the chances are that S5 will be
wildly wrong.
But you are right, better a correct indication of S9 than nothing. And
the XG1 is a nice tool for this, especially if you can verify the signal
level which it is producing.
vy 73 de toby
--
DD5FZ, 4N6FZ (ex dj7mgq, dg5mgq, dd5fz)
K2 #885, K2/100 #3248
K3/100 #??? (< #200)
DOK C12, BCC, DL-QRP-AG
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