Here are some uses I have for TNF.
I love to work 6m, but I have a bunch of noise if I point my bean in the
direction of my neighborhood.
I defined a BUNCH of persistent TNFs on the 6m birdies. Now when I use
6m and tune through the band, I am not annoyed with the squeals from the
crappy switching power supplies.
If you really want to see TNF in action, if running digital modes with a
waterfall display, drop a 3x notch on an over-driven PSK signal and
watch the waterfall and the signal disappear.
Last but not least and I can't take credit for figuring this one out
(thanks Dale WA8SRA). You can create a psycho-acoustic CW filter that
eliminates the *perception* of ringing with very narrow filters (due to
the narrow AF bandwidth) by defining a wide (>500 Hz) CW filter and
placing two TNFs on either side of the pitch frequency. This will notch
out close by signals while allow some of the higher AF frequencies to be
present, making a better sounding pseudo narrow filter.
-Tim
--
Tim Ellison, W4TME
Product Management, Sales & Support
FlexRadio Systems^(TM)
4616 W Howard Ln Ste 1-150
Austin, TX 78728
Phone: 512-535-4713 Ext. 223
Email: [email protected] <mailto:[email protected]>
Web: www.flexradio.com <http://www.flexradio.com>
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