View Single Post
  #4   Report Post  
Old November 3rd 06, 05:30 PM posted to rec.radio.amateur.homebrew
Tim Wescott Tim Wescott is offline
external usenet poster
 
First recorded activity by RadioBanter: Jul 2006
Posts: 202
Default CW to FM Remodulator?

wrote:
(top posting fixed)
On Nov 3, 6:27 am, "AndyS" wrote:

wrote:

Have any of you ever done this and how did it work out for you?


- Jeff


Andy writes: Jeff, I haven't tried this method, but one rule of thumb I have
always
believed in is:

"No matter how much you shift, limit, amplify or divide noise, it still
ends up as noise"


(snip)

My ear copy can still pick those
out, and many of the "processors" can't deal with noisy sigs in that
region....they tend to fall apart when anything below tangential
sensitivity is received....

Andy W4OAH in Eureka, Texas


Andy,

Thanks for your response. I guess I'm looking for a magic pill (though
I know better). I agree that the human brain/ear combination is
unsurpassed in digging out the really weak ones or the weak signal our
of the pile up. My unfortunate situation is my degenerating hearing. I
now wear hearing aids in both ears and have difficulty understanding
spoken conversation no matter what the volume level. I have always been
a CW only operator so the loss of SSB use doesn't seem so bad. I can
copy CW much better than listen to voices, but I can never be sure that
I can still dig the weak signals out of the mud and I'm pretty sure I
have lost some ability to deal with pile-up QRM. So I'm grabbing at
straws for gizmos to help me out as my hearing digresses.

73 - Jeff - KA9S

They're doing amazing things with PCs and soundcards, doing waterfall
plots to pick out weak signals. Perhaps this would work for CW as well
-- and if it does you can take a break from the hearing aids entirely,
and just do it all visually.

Alas, I don't know what the right software to use would be.

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Posting from Google? See http://cfaj.freeshell.org/google/

"Applied Control Theory for Embedded Systems" came out in April.
See details at http://www.wescottdesign.com/actfes/actfes.html