Both the P3 and the K3 use S9 = -93 dBm on 2 meters. The P3 can read
out in either S units or dBm.
And they both treat 6 meters the same as HF: S9 = -73 dBm.
Alan N1AL
On 11/18/2015 05:18 PM, Greg Troxel wrote:
Alan <n...@sonic.net> writes:
From Wikipedia: https://en.wikipedia.org/wiki/S_meter
"IARU Region 1 Technical Recommendation R.1 defines S9 for the
HF bands to be a receiver input power of -73 dBm. This is a level
of 50 microvolts at the receiver's antenna input assuming the
input impedance of the receiver is 50 ohms.
For VHF bands the recommendation defines S9 to be a receiver
input power of -93 dBm. This is the equivalent of 5 microvolts
in 50 ohms."
I have always found the VHF definition to be strange, as it seems that a
uniform rule is better.
My impression is that the K3 and KX3 use the -73 dBm reference even on
6m. Is that right? What about with transverters - does one have gain
calibration?
Obligatory Elecraft comment: it would be really nice to be able just
show signal strength in dBm.
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