Re: [Elecraft] [K3] The Way We Rank Receivers (long)

2016-10-26 Thread David Woolley
The main commercial interests in subjective audio noise reduction, 
particularly for speech, are probably the hearing aid industry.


It is subjective because noise reduction only really removes noise that 
isn't interfering.  That is still useful, as whilst the human brain can 
also do that, it gets tired in the process.


On 25/10/16 16:13, brian wrote:

This would be tough since the world of RFI sources is huge.  It would
take some real effort to quantify the world of noise sources and their
signatures and then find some algorithms to deal with them.  Impossible?
The world of big data isn't so big any more. Such an catalog might be
doable.  Algorithms are another issue.  My hope is that NR/NB could be
made adaptive to recognize the signature(s) and generate appropriate
algorithms on the fly.

There are a lot of smart people out there who could perhaps address
these issues.  Unfortunately commercial interests have to see some
payoff.  They haven't as of yet.  The fact that AM broadcasters are
being burned by RFI and becoming proactive is a plus.


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com


[Elecraft] set on

2016-10-26 Thread Michael Chowning


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com


[Elecraft] FOR SALE XV-144 2M transverter

2016-10-26 Thread George Rebong
For sale Elecraft XV144 2 meter Xverter with oven. Comes with all the
cables and the control cable for K3. Copy manual. It will also work with
other HF radios. Non smoker. Works great. Can send pictures.
PayPal no fees or USPS money order. Asking $325 shipped.
George KE6TE
916-600-2717

--
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com


Re: [Elecraft] FS-KPA500 SOLD

2016-10-26 Thread Jack Satterfield
Sold pending funds

Jack

W4GRJ

 

From: Jack Satterfield [mailto:j...@satterfield.org] 
Sent: Tuesday, October 25, 2016 10:16 AM
To: Elecraft@mailman.qth.net
Subject: FS-KPA500

 

Elecraft KPA500 Amplifier Serial 2015 in Excellent/Like New condition. 

Includes Kpa500-K3 cable and Y-Cable, manual and dust cover $1850 shipped.

Jack

W4GRJ

 

 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com


Re: [Elecraft] [K3] The Way We Rank Receivers (long)

2016-10-26 Thread Bill Frantz
OK, I can't resist. I turned on my KX3 at about 0018z on Oct 26. 
It was set up for 20M PSK tuned to 14.070 with a DSP bandwidth 
of 2.5KHz. I showed one bar (S1) of S meter with occasional 
flashing of the second bar (S3). The preamp was off and it was 
in DATA A mode. The antenna is a 2 element wire beam at about 20 
feet. There were no obvious signals on the PX3 -- the band was closed.


I am at the family house in Peterborough NH, about 1.5 miles 
from the village and some 500-1000 feet from the nearest other 
houses. We do have some CFL and LED bulbs in the house, some of 
which are turned on.


73 Bill AE6JV

On 10/25/16 at 2:43 PM, wun...@wunderwood.org (Walter Underwood) wrote:

Good point. Looking at the photo of my KX3 on top of Mount 
Willson in Henry Coe, I see two bars on the S-meter on 20 
meters. That is miles from Silicon Valley. It was quiet and 
lovely, I could hear everybody. The filters were wide open, 
preamp on, and NR off. Zoom in and you can see for yourself.


---
Bill Frantz|"After all, if the conventional wisdom was 
working, the
408-356-8506   | rate of systems being compromised would be 
going down,

www.pwpconsult.com | wouldn't it?" -- Marcus Ranum

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com