In an earlier post it was asked:
"> I would also like to see a technical description beyond the
hand-waving in the manual of how noise blanking is performed. For
example, I fail to see any dedicated delay in the signal path to
create timing coincidence between the noise pulse and the blanking
gate. Perhaps it's inherent in the design, but I would like to see
some words that say so.
If it's going to be necessary for me to set a blanking threshold
(something I think could be automatic) then why can't the radio
generate a blanking pulse that persists as long as that threshold is
exceeded. Why do I also have to adjust that? If the pulse is so long
that intelligibility suffers then that noise isn't amenable to being
blanked and blanking needs to be disabled."
Thus the various discussions and references have appeared.
73
Bob, K4TAX
On 2/4/2016 6:21 PM, Tim Tucker wrote:
What, exactly, does the discussion of the Collins NB filter have to do with
the experimental NB thing Wayne is working on? Can we stick to the topic
at hand?
On Thu, Feb 4, 2016 at 3:46 PM, Bob McGraw K4TAX <[email protected]>
wrote:
The purpose of a Noise Blanker is to act only on repetitive pulse type
noise. They do little to nothing for random type noise issues.
73
Bob, K4TAX
On 2/4/2016 5:29 PM, W5RDW wrote:
I think the Collins NB was most effective on pulse type (ignition) noise
encountered in mobile applications.
http://collinsradio.org/archives/manuals/136B-2_5th-ed-11-66_.pdf
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