Richard: The RF Gain calibration procedure orchestrated by the K3 Utility turns the preamp and attenuator on and off at specified points in a procedure devised by KK7P. The settings of PRE and ATTN when you start calibration should not affect the calibration accuracy. If you look at the text window during the calibration (or review it afterward), you'll see that there are steps with both preamp and attenuator off, a step with just PRE, a step with just ATTN, and a step with both PRE and ATTN on.
The calibration is often better if you can arrange to use a signal source that provides both -73 and -33 dB (S9 and S9+40 dB) signals and run both "low" and "high" level calibrations. 73 de Dick, K6KR -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Richard Fjeld Sent: Wednesday, December 21, 2011 7:42 PM To: elecraft posting Subject: [Elecraft] K3 RF Gain control reduced range after RF gain Nate, You will get better advice from others than from me, but I am wondering if you had the pre-amp on when you did the calibration routine? FYI, I calibrated my S-meter using the XG2 sig gen, and it was right on with the factory settings. Richard Fjeld, n0ce [email protected] E=IR, it's the law. ______________________________________________________________ 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
