There are a couple reasons why the K3's S meter and the P3 display may show a different level.
As Don mentioned, the P3 will generally show a much lower level than the K3 on noise. It's because the effective bandwidth of the P3 is generally only one display pixel, about 1/450 of the span. Less bandwidth means less noise power in each display point. The same thing happens to some extent with an SSB signal. Another issue is that the S meter reading on the K3 may change when you turn the preamp or attenuator on or off. To prevent that happening, set CONFIG:SMTR MD to "ABS". If you do that and calibrate both the K3 S meter and the P3 amplitude, then the two should closely agree when measuring a steady CW carrier. Alan N1AL On Sat, 2011-01-15 at 23:16 -0500, bill wade, sr. wrote: > Newly installed P3. Noticed S meter reading on K3 will be 2-3 units > higher than that displayed on P3. I've tried lengthening the signal > heights, but results are unsatisfactory:-( . > > Is there another method for bringing the two more in balance? > > 73 > > Bill Wade, Ai4PF > ______________________________________________________________ > 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 ______________________________________________________________ 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
