Greetings,

I have noticed since about 15 November 2006, for sure since 25 November my loopback frequency measurement values on FO-29 have changed and are more variable. Normally my loopback frequencies on FO-29 are stable at the several hundreds of Hz but lately they are variable with a peak range of 1.5-kHz--so far. Now I know why lately I am getting these loopback frequency changes from pass-to-pass and day-to-day. When the passband is saturated the frequency translation is non-linear. Additionally, distortion becomes a problem for all users when the passband is saturated.

James A. DeYoung (KG4QWC), 3218 Wellington Road, Alexandria, VA 22302-2229, deyoung_james@yahoo.com

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