FRS should add feature to Flex6700 to Noise Nulling ability like the ANAN Radio's see HPSDR Phase Noise Cancellation (+NB): ANAN-100D

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  • (Edited)
FRS should add feature to Flex6700 to Noise Nulling ability  like the ANAN Radio's see HPSDR Phase Noise Cancellation (+NB): ANAN-100D

since the Flex6700 has two separate A/D's to Phase and Amplitude adjust Interference out
of Radio 

see youtube video

https://www.youtube.com/watch?v=qdQm17udCSo

73 Mike
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mikeatthebeach .

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Posted 2 years ago

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Jim Gilliam

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MFJ has a similar unit. It requires two antennas. The big "IF" of the success of this technique is that one antenna should be subjected to a higher noise than the second antenna. This gives the unit enough information to discern between wanted and unwanted signals. If Flex were to implement this it might cause more problems than it solves in that meeting the conditions of subjecting one antenna to the noise source more  than another could be problematic and cause more complaints than praises.


Jim, K6QE

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mikeatthebeach .

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Jim,
  Do not see complaints on ANAN forum but many praises  for this feature

I do have a NCC-1 and can do it external but cost me $800 for the RT1A and NCC-1
combo, be easier if built into software since you have two A/D's in Flex6700
73 Mike
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Jim Gilliam

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Hams have a tendency to over sell this technique. I had reasonable success using a vertical antenna as the noise antenna and a horizontal for the communications antenna. At times I could get a null as high as 10 dB, however, at other times, I could hardly get a null depending on how the noise propagated with time of day, weather, etc.


Jim, K6QE

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mikeatthebeach .

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Jim,
  For local noise from a neighbor, usually is not an issue as long as noise Sense signal has a slightly higher signal than noise into main antenna this technique works
quite well.

The real issue/challenge  is multiple noises, that is hard to null out all at same time

Mike
(Edited)