Thanks. Sounds from your description that the interval was very short, so it
was not what has been called a "long-delayed" echo.
From: on7eh
Sent: Sunday, February 5, 2017 3:46 PM
To: Arthur Delibert; topband@contesting.com
Subject: Re:
I have heard echoes of my own signal under some circumstances too. More
often on 80M but a couple times on 160M. Often in the hour before dawn.
These echoes were also heard on other stations within a few hundred miles,
especially ones to my north.
For the 160M echoes, some stations in W1 were
Art and all,
unfortunately, I do not have a PC in the shack outside contest days,
otherwise an answer could easily be provided.
For sure, its presence was annoying, not hearing the expected noise in
between the dit and dah's at 20wpm...
BTW: I ruled out the TRX given the infrequent echoes
Meant to say "all that improbable""But the idea of a multiple
moderate angle skip with so many hops around the world and twice is IMHO
really all that/*improbable*/."
On 2/5/2017 3:33 PM, Herbert Schoenbohm wrote:
Having worked LU and CX on 2 meters SSB (100 watts 7 element beam)
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
Your transceiver
switching may not have been fast enough to catch the echo the first time
around.
On Sun, 5 Feb 2017 11:21:51 -0800, Tree
wrote:
Yup - pretty crazy. Or space aliens were messing with
me.
On Sun, Feb 5, 2017 at 9:51 AM, k1fz
Hi Mike ,
Have seen tropospheric bending may times over the years. This was different.
Worked 2 meters for years in the 1960's
Need to keep an open mind.
73
Bruce
On Sun, 5 Feb 2017 13:08:11 -0600, Mike Waters wrote:
Hi Bruce,
I think what you experienced on channel 13 was a
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 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.
>
>
Hi Bruce,
I think what you experienced on channel 13 was a coincidence.
Tropospheric VHF and UHF band openings have nothing to do with any kind of
enhanced 160m conditions. Tropospheric bending occurs when a cold air mass
happens to be beneath much warmer air aloft. The reflection occurs where
Great info Tree,
The earth is ~24,000 miles around at the equator, less toward the poles.
(Reason we have 24 hours in a day)
Your timing would indicate that your echo was heard the second time around.
73
Bruce-k1fz
_
Topband Reflector Archives -
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.
2 February 2017
I like to watch channel 13 TV (UHF range) about 100 miles distant in Portland
Maine. On the converter signal meter it usually is 15 to 18 units. It is good
watching with some signal loss blips typically spaced several minutes.
But on 2 February in the afternoon noticed that
Approximately how much delay was there between your transmission and the echo?
--Art Delibert, KB3FJO
From: Topband on behalf of on7eh
Sent: Sunday, February 5, 2017 4:32 AM
To: topband@contesting.com
Subject:
I noticed a few weak echoes this morning around 0400. I thought it was
someone playing around.
Art
NK8X
ᐧ
On Sun, Feb 5, 2017 at 4:32 AM, on7eh wrote:
> For the first time,
> I heard my echoes on topband, yesterday morning starting around 05 UTC.
> They lasted for at least 1
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
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