Jerry also reminded me that we are working in the FM broadcast band
and sure enough--my spurious peak is WWLS. Modern spectrometers and
filters have made us (at least me) complacent about external RF
sources but nearby 100 MW transmitters have to be dealt with (though
not necessarily listened to.)
Thanks all.
-- Eric-Enwall@ou.edu Department of Chemistry and Biochemistry, University of Oklahoma, Norman Campus. Norman Oklahoma 73019-0370 (405) 325-7571 (405) 325-2843 fax (405) 325-6111