Having worked LU and CX on 2 meters SSB (100 watts 7 element beam)
without any ionospheric skip in the strange ducting FAI mode that is at
time formed by the magnetic field at the equator, i say that anything is
possible. But the idea of a multiple moderate angle skip with so many
hops around the world and twice is IMHO really all that probable.
On 2/5/2017 3:13 PM, Art Snapper wrote:
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 <tree@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 <radio75a3@msn.com> wrote:
Approximately how much delay was there between your transmission and the
echo?
--Art Delibert, KB3FJO
________________________________
From: Topband <topband-bounces@contesting.com> on behalf of on7eh <
on7eh@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
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