Order Tray | Contact Us | Home | SIG Lists

[aprssig] Re: aprssig Reading APRS becons w/Dopplers?

Steve Noskowicz noskosteve at yahoo.com
Wed Mar 15 20:28:42 UTC 2006


Thanks, Andrew,
        Which Doppler is this with?  I don't know the characteristics of all he various ones out there, but this may help.
   
  Curt,
              I'm very familiar with the Doppler system as well as other DF tools as I was professionally in it some time ago (and have kept up on many of the new developments).  It is a good tool, but not the end-all, never need anything else DF tool.
              I am interested, as it appears you are, in actual experience with them and the APRS "squawks".  I'm finishing up one (finally) and am curious how the modulation affects them.
              I also have two new ideas I want to try (after all these years of thinking and not doing much).
              I hope to try these variations once it is finished in the next months and may use local APRS stations, as well as local repeaters and mobiles as guinea-pig stations to DF.  One of these ideas addresses the sensitivity issue, the other *may* provide some info to improve understanding fo multi-path.  A third (nobody expects the Spanish Inquisition) the broadband "whine/splatter" issue.
   
  73, Steve, K9DCI
   
   ============================================================
  Date: Tue, 14 Mar 2006 16:45:11 +1000
From: "Andrew Rich" <vk4tec at tech-software.net>

I found that one or two seconds of carrier , does not matter what mod 
is on it is enuf to give u a direction.

What I find you have to do is keep clearing the display now and then to
start from scratch.

I was very impressed never have done this before

Andrew Rich
------------------------------
Date: Tue, 14 Mar 2006 05:48:43 -0800 (PST)
From: Curt Mills <archer at eskimo.com>
   
  APRS usually has a position in it, so you must mean a misbehaving
APRS station?
  
.....snip........
  Curt, WE7U.
  ==============================================
   

		
---------------------------------
 Yahoo! Mail
 Use Photomail to share photos without annoying attachments.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.tapr.org/pipermail/aprssig/attachments/20060315/e2820ad5/attachment.htm 


More information about the aprssig mailing list