The tracking notch filter is one you set up manually yourself. This might go on an interfering tone and will work great even if you are running CW. Thereafter, until you delete it, even as you tune, it will adapt its frequency and Q to keep the same BW.
The automatic notch filter FINDS the tones and suppresses them. For example, even the signal you are listening to on CW! It will also be bad for some digital signals where they are weaker than the interference signal. By using the notch, you can eliminate the interfering tone and it will not capture the AGC. You may have to stack them to get the interfering signal to the noise floor but four are provided (4x) to get a lot of suppression. The DSP behind the notch filter is pretty straightforward and the code was easy to write. All of the magic in this filter to me is in the brilliant work done in the user interface and control code. I am sure there are things there that can facilitate easier use but the two pieces, math and UI, have done something we are quite proud of. Bob N4HY On Thu, Aug 25, 2011 at 10:27 AM, Robert Guertin <[email protected]>wrote: > Downloade and installed PSDR 2.2.2 with no glitches. The TNF feature is > absolutely genius. Whoever programmed that feature is a genius. > Works flawlessly especially on my rig. I noticed the there is no user > adjustibility on the TNF. Really don't need any. > > What's the difference between a Tracking Notch Filter and an Automatic > Notch > Filter? > > Fine job, guys. Enjoying my new radio. > > Bob > W1GLV > _______________________________________________ > 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. > -- Flex Radio, Inc. Consultant Professor ECE Virginia Tech 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.
