[Elecraft] Will there be a K4

K9MA k9ma at sdellington.us
Mon Mar 25 11:57:15 EDT 2019


The top of my list would include a really effective noise blanker.  
Those of us who don't live way out in the countryside are often plagued 
with power line noise, which a good noise blanker can largely eliminate. 
Many older transceivers have noise blankers which are very effective on 
impulse noise, but only as long as there are no strong signals within 
5-10 kHz of the desired signal.

The "K4" noise blanker would have the ability to use a second receiver, 
with a wide IF bandwidth, tuned to a nearby quiet segment, to control 
the noise blanker in the primary receiver(s). It would be able to 
automatically find that clear segment. To be effective, the noise 
blanker receiver has to have a bandwidth of at least 15 kHz, and there 
can be no strong signals within that bandwidth.

Perhaps direct sampling would allow this to be done in software, if the 
dynamic range were large enough, but it would have to work as well as a 
hardware version.

73,

Scott K9MA

-- 
Scott  K9MA

k9ma at sdellington.us



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