It does indeed work in the RF but AFTER the noiseblanker and in its current implementation, CANNOT work before the noise blanker.
It is two double sided real filters, one applied to the I and the other applied to the Q. It works because it is convolved with the IF filter at RF. But it is clear that with this implementation, it is only designed to reject INBAND signals, because if applied to OUT of band signals it could easily have unintended consequences to the inband signals. So, our TNF filter design REQUIRES that it be applied at RF, but AFTER the noiseblanker, and IF filter, but before the AGC. I know this is confusing, but in the current implementation, it cannot be applied BEFORE the noiseblanker, where it would help in the way you want if the design were different. Bob On Tue, Nov 1, 2011 at 12:13 PM, <[email protected]> wrote: > I read the white paper, but still not sure about this. I know the > phrasing of this will be technically incorrect but, Is TNF in the audio or > RF domain? > > I was excited when I first heard about TNF. I (like others) rely on the > NB to deal with powerline noise and was hoping that I could notch out > offending signals that are "pumping the noise blanker". I just upgraded a > few days ago and TNF does not appear to provide any solution to this issue. > Am I doing something incorrectly, or asking too much HI HI? > > > > 73, Robert KR7O/YB2ARO, DM07ba/OI52ee (ex. N7STU) > [email protected] > > www.vhfdx.com (KR7O/YB2ARO homepages) > Looking for old VHF QSL cards and logbooks. > > > > > ______________________________**_________________ > Flexedge mailing list > [email protected] > http://mail.flex-radio.biz/**mailman/listinfo/flexedge_**flex-radio.biz<http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz> > This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is > used for posting topics related to SDR software development and > experimentalist who are using beta versions of the software. > -- Bob McGwier Facebook: N4HYBob ARS: N4HY _______________________________________________ Flexedge mailing list [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexedge_flex-radio.biz This is the FlexRadio Systems e-mail Reflector called FlexEdge. It is used for posting topics related to SDR software development and experimentalist who are using beta versions of the software.
