Would it be possible to set up the K3 so that we would have the availability to change the S meter calibration on 6 meters and the transverter bands to conform to the attached standards, it would be nice to have this user selectable in the menu. also it would have to be apply to the P3
Today two references values exist: for frequencies below 30 MHz, S9 is defined as a voltage of 50 uV over 50 Ohms at the receiver antenna connector; for frequencies above 30 MHz, S9 is defined as a voltage of 5 uV over 50 Ohms at the receiver antenna connector. This refers to an unmodulated carrier signal (N0N) that uses almost no bandwidth; in case of real signals using a given bandwidth, this definition may not be enough since a smaller receiver bandwidth allows a weaker minimum detectable signal, but S-points are still a good tool for comparing received signals. S-points for frequencies below 30 MHz: Signal strength Relative intensity Received voltage Received power (Zc = 50 Ohm) S1 -48 dB 0.20 uV -14 dBuV 790 aW -121 dBm S2 -42 dB 0.40 uV -8 dBuV 3.2 fW -115 dBm S3 -36 dB 0.79 uV -2 dBuV 13 fW -109 dBm S4 -30 dB 1.6 uV 4 dBuV 50 fW -103 dBm S5 -24 dB 3.2 uV 10 dBuV 200 fW -97 dBm S6 -18 dB 6.3 uV 16 dBuV 790 fW -91 dBm S7 -12 dB 13 uV 22 dBuV 3.2 pW -85 dBm S8 -6 dB 25 uV 28 dBuV 13 pW -79 dBm S9 0 dB 50 uV 34 dBuV 50 pW -73 dBm S9+10 10 dB 160 uV 44 dBuV 500 pW -63 dBm S9+20 20 dB 500 uV 54 dBuV 5.0 nW -53 dBm S9+30 30 dB 1.6 mV 64 dBuV 50 nW -43 dBm S9+40 40 dB 5.0 mV 74 dBuV 500 nW -33 dBm S9+50 50 dB 16 mV 84 dBuV 5.0 uW -23 dBm S9+60 60 dB 50 mV 94 dBuV 50 uW -13 dBm S-points for frequencies above 30 MHz: Signal strength Relative intensity Received voltage Received power (Zc = 50 Ohm) S1 -48 dB 20 nV -34 dBuV 7.9 aW -141 dBm S2 -42 dB 40 nV -28 dBuV 32 aW -135 dBm S3 -36 dB 79 nV -22 dBuV 130 aW -129 dBm S4 -30 dB 160 nV -16 dBuV 500 aW -123 dBm S5 -24 dB 320 nV -10 dBuV 2.0 fW -117 dBm S6 -18 dB 630 nV -4 dBuV 7.9 fW -111 dBm S7 -12 dB 1.3 uV 2 dBuV 32 fW -105 dBm S8 -6 dB 2.5 uV 8 dBuV 130 fW -99 dBm S9 0 dB 5.0 uV 14 dBuV 500 fW -93 dBm S9+10 10 dB 16 uV 24 dBuV 5.0 pW -83 dBm S9+20 20 dB 50 uV 34 dBuV 50 pW -73 dBm S9+30 30 dB 160 uV 44 dBuV 500 pW -63 dBm S9+40 40 dB 500 uV 54 dBuV 5.0 nW -53 dBm S9+50 50 dB 1.6 mV 64 dBuV 50 nW -43 dBm S9+60 60 dB 5.0 mV 74 dBuV 500 nW -33 dBm Ed KD7PY ex K7WIA -- View this message in context: http://elecraft.365791.n2.nabble.com/S-Meter-HF-ver-VHF-calibration-tp7581452.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
