I am wondering if there is a backscatter type condition that can also slow down the Vp.
Art NK8X ᐧ On Sun, Feb 5, 2017 at 12:18 PM, Tree <t...@kkn.net> wrote: > I once had a very strong echo on 160. > > The delay was about 225 milliseconds - which equates to a distance of about > 42K miles. > > You can listen to it here. It is so strong that you won't believe that is > really the echo. I send two dits and hear two dits come back. > > http://www.kkn.net/n6tr/sounds/echo.wav > > It appears this was from 1997 - I posted about it here: > > http://lists.contesting.com/archives//html/Topband/1997-02/msg00136.html > > I remember hearing similar echos on my 75 meter signal during a California > QSO Party when I was operating at K6NA's QTH back in 1987 or 1988. > > Tree N6TR > > On Sun, Feb 5, 2017 at 6:45 AM, Arthur Delibert <radio7...@msn.com> wrote: > > > Approximately how much delay was there between your transmission and the > > echo? > > > > > > --Art Delibert, KB3FJO > > > > > > ________________________________ > > From: Topband <topband-boun...@contesting.com> on behalf of on7eh < > > on...@skynet.be> > > Sent: Sunday, February 5, 2017 4:32 AM > > To: topband@contesting.com > > Subject: Topband: Echo on 160m yesterday morning > > > > For the first time, > > I heard my echoes on topband, yesterday morning starting around 05 UTC. > > They lasted for at least 1 hour, with some OFF-periods in between. > > I had to quit at 06 UTC. (still 1 hour before surise) > > > > The echoes were loudest on the short Beverages (<60m long) heading N/S > and > > NE/SW and several dB lower on the NW/SE Beverage. (about 130m long). > > The Tx setup is modest with Elecraft K3/100 and inv L at 15m height, > > sloping down to 11m. > > > > Only DX heard that morning was USA (typical condictions) so I wonder what > > else does hearing echoes indicate? > > > > > > 73, > > Michel, ON7EH > > > > > > > > _________________ > > Topband Reflector Archives - http://www.contesting.com/_topband > > Topband Archives - Contesting Online Home<http://www.contesting. > > com/_topband> > > www.contesting.com > > Topband Mailing List Archives. Search String: [How to search] Display: > ... > > > > > > _________________ > > Topband Reflector Archives - http://www.contesting.com/_topband > > > _________________ > Topband Reflector Archives - http://www.contesting.com/_topband > _________________ Topband Reflector Archives - http://www.contesting.com/_topband