Re: Re??? Diversity Receive as Noise C anceling?

[Edward R Cole]

Response to Bill W4ZV:  Of course not everyone would chose to use
their sub-Rx for noise cancelling.  I mentioned that in my initial
suggestion.  I was only thinking of the diversity discussion that
David, AB7E, refers to and thinking there was another approach to
obtaining noise reduction or nulling without spending more cash for a
dedicated piece of hardware.

Interesting to me is the two approaches: one RF analog and the other
in software.  SDR is offering lots of solutions to old problems in
sw.  That can either reside in firmware on the radio or exported to a
computer to be run.  In my EME pursuits both approaches have been done.
Interesting ideas to explore.  That Elecraft is interested/willing to
explore new solutions reinforces to me my good decision to purchase a
K3.  That is the promise of SDR - non obsolescence.


73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ   500 KHz - 10-GHz   www.kl7uw.com
EME: 144-800*w, 432-100w, 1296-testing*, 3400-winter?
DUBUS Magazine USA Rep [hidden email]
======================================
*temp not in service
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[Johnny Siu]

Hello Edward,

From marketing point of view, if the noise cacelling mechanism were eventually
implemented in K3 successfully, the sales of KRX3 option would rocket up,
wouldn't it? 

 cheers,


Johnny VR2XMC



----- 郵件原件 ----
寄件人﹕ Edward R. Cole <[hidden email]>
收件人﹕ [hidden email]
副本(CC) Bill W4ZV <[hidden email]>
傳送日期﹕ 2010/12/1 (三) 1:58:33 AM
主題： Re: [Elecraft] Re??? Diversity Receive as Noise C anceling?

Response to Bill W4ZV:  Of course not everyone would chose to use
their sub-Rx for noise cancelling.  I mentioned that in my initial
suggestion.  I was only thinking of the diversity discussion that
David, AB7E, refers to and thinking there was another approach to
obtaining noise reduction or nulling without spending more cash for a
dedicated piece of hardware.

Interesting to me is the two approaches: one RF analog and the other
in software.  SDR is offering lots of solutions to old problems in
sw.  That can either reside in firmware on the radio or exported to a
computer to be run.  In my EME pursuits both approaches have been done.
Interesting ideas to explore.  That Elecraft is interested/willing to
explore new solutions reinforces to me my good decision to purchase a
K3.  That is the promise of SDR - non obsolescence.


73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ  500 KHz - 10-GHz  www.kl7uw.com
EME: 144-800*w, 432-100w, 1296-testing*, 3400-winter?
DUBUS Magazine USA Rep [hidden email]
======================================
*temp not in service



     
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[Dick Dickinson]

The outboard accessories mentioned here work with only a single source of
noise, as I understand them.  Is it feasible that a noise canceling unit
could be designed to utilize two or more sense antennas for multiple noise
sources?


73,
Dick - KA5KKT


        - The human condition will improve when praise can be given one
without simultaneously talking down the other.


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[Bill W4ZV]

Edward Dickinson, III-2 wrote

The outboard accessories mentioned here work with only a single source of
noise, as I understand them.  Is it feasible that a noise canceling unit
could be designed to utilize two or more sense antennas for multiple noise
sources?

You could use a separate noise canceller and RX antenna ahead of each K3 receiver and then listen in diversity.  Or you could find some quiet property in the country!  :-)

73,  Bill

[Dick Dickinson]

Bill -

 

I'm all for the latter suggestion!  I had that 25 years ago.  At present,
there are just a couple of dozen obstacles to overcome to return to similar
circumstances.  J

 

 

73,

Dick - KA5KKT

 

PS  I don't have the  2nd receiver.

----------------------------------------------------------------------------
------------------------------------

 

You could use a separate noise canceller and RX antenna ahead of each K3

receiver and then listen in diversity.  Or you could find some quiet

property in the country!  :-)

 

73,  Bill

 

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