-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 >I bet what fixed the problem is that the LMC6464 only has 50 Khz Bw Almost sorta. I had limited the other amp to well below that with external RC, and was unable to get rid of the problem. Actually, I was unable to affect it significantly. The 6464 dosen't exhibit the rectification problem at all. This is definitely a situation where the opamp is rectifying ambient RF into noise on my signal. - -- Are you an ISP? Tired of spam? www.spamwhack.com A pre-emptive strike against spam! Where's Dave? http://www.findu.com/cgi-bin/find.cgi?kc6ete-9 -----BEGIN PGP SIGNATURE----- Version: PGPfreeware 6.5.2 for non-commercial use iQA/AwUBORB+SIFlGDz1l6VWEQIJfQCguR3NpPb2xEc2EVLPqEae4Wxs0zMAnA1t JakZzq3aTpmZTSwVTNFyE+aD =S9Nf -----END PGP SIGNATURE-----