Listening to a weak DX station on 14.195 SSB and someone tunes up with a carrier producing a loud 600 Hz tone on 14.195. I then turn on the ANF and adjust the slider correctly and narrow the bandwidth. The ANF nulls out almost all of the 600 Hz tone Until the weak station begins to talk. Then I hear the 600 Hz tone with the voice of the DX station. If the tune up carrier signal is weaker than the DX station then the ANF works well and most of the tone is nulled out.
This is with a Flex 6300, Smart SDR V2.1.32. (6600 on order) I had a Kenwood TS-990 that had the same issue with the ANF but also had an Icom 7800 that would eliminate all tuneup tones in the passband.
I feel confident that Flex will be improving the ANF and NB. For me the way it is now is acceptable and has not stopped me from investing in a new Flex 6600.
As I noted in an earlier post, it works fine for me on my 6500, but I use it only in PC mode or remote with an iPad. I cannot speak to "rig" mode.
I honestly don't miss an auto-notch much anymore.
When I setup my 6400M yesterday I had a tuner upper on 20m and turned on ANF and he was gone instantly. Works great! Good job flex!
I think a lot of issues are this: You can have the best rig made but if you have a loose nut behind the keyboard or touchscreen (operator who is clueless) then it doesn't matter the result is the same as if you had the cheapest radio with the least features.
Defintion of Crazy: Doing the same thing over and over and expecting a different result
Defintion of Learning Experience: Its what you get when you didn't get what you thought you wanted!
I agree that the ANF works well if you hear someone tuning up on a quiet frequency. But, if I am listening to a QSO and someone tunes-up on or near the frequency the tune up tone will be heard when someone speaks - almost as loud as when the ANF is turned off. This is especially true for me when the tune up tone is louder in signal strength than the station talking.
I am mentioning this issue because a few other manufactures have solved this issue and I believe Flex will eventually fix it improve the performance of the ANF and other noise migration tools.
Depending on your operating style and what your objectives on the HF bands may determine how much of an issue this is for you. If no one or only a few mention these and other issues FRS will have little motivation to make improvements.
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