Travis,
The real measure of any receiver in the ability to hear weak signals is
not in the S-meter deflection. Within limits both the K3 and KX3
S-meters can be calibrated to read most anything you want to see.
The measurement of actual sensitivity is in the MDS measurement. That
indicates how weak a signal can be heard at 3 dB above the receiver
noise floor.
When you get your XG3, I encourage you to follow the instructions in the
XG3 manual for determining the MDS of a receiver. With the XG3, that is
a number inferred by the response at -107 dBm rather than a measurement
using a well shielded signal generator and switching in attenuation, but
the approximation should be within 1 dB of the actual MDS if you do the
procedure (and math) as instructed.
73,
Don W3FPR
On 3/19/2013 7:26 PM, Travis Brown wrote:
Thanks Stan. I ordered a XG3 yesterday and I hope to have it here this
week. I wasn't expecting such a huge discrepancy between the KX3 and K3,
and it really surprised me. If I figure out the secret sauce, I'll
definitely let you know. I am curious, with did you put the KX3 and K3 on
the XG3 and see a discrepancy in the S-Meter reading? If so, how much?
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