Ed, Ok, I have just confirmed your experience (but I cannot explain it). If I tune to a band where the noise level is S-3 and I reduce the RF Gain a bit (to the 2:30 or 3 o'clock position), the S-meter reading will reduce, but if I reduce the RF Gain more CCW, the S-meter reading will increase as expected.
The schematics tell me that the reduced RF Gain is the same as increased AGC - so there is something strange going on between the full CW position of the RF Gain control and the 3 o'clock position. It does not respond as I would expect. Maybe Lyle can chime in with some "words of wisdom" to explain this "happening" - Wayne is on vacation, so I don't think he can be of much help right now. Ed, I no longer doubt your report - but I do find it a bit strange. 73, Don W3FPR On 7/21/2011 4:52 PM, K7WIA wrote: > Ok we did the RF calibration per the K3 utility program using the XG3 for the > signal source and I see no change with the way the S meter responds, being > I use the K3 for 6 meters only I set the S meter calibration for that band > using the XG3 this is how my S meter is set up in the Confg. menu. > > SMTR OF: 027 > SMTR SC: 012 > SMTR PK: OFF > SMTR MD: NOR > this is set with the preamp on in the K3 > > -107 dbm = S3 > -73 dbm = S9 > -33 dbm = 40/9 > > Ed K7WIA > ______________________________________________________________ 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
