Re: FW: [HCDX] Mediumwave echo ?

[Henrik Klemetz <hklemetz@xxxxxxxx>]

Sorry for being so utterly unknowledgeable about the
Cuban situation, but why would they be using a sat
relay in the first place? The echo I can hear on the
clip reminds me of Spanish graveyard channels as they
used to sound many years ago. If they were using a sat
relay at the time, I do not know. I believe they were
not.
Henrik

 --- Charles Hutton <charlesh3@xxxxxxx> skrev: > 
> Estimado Senor Klemetz:
> 
> I - like you - was assuming there are two stations
> and that one has a direct
> feed and the other has a delayed feed, possibly
> through two satellite hops.
> It seems unlikely such a long echo would happen with
> only one station - it
> would have to somehow be receiving two feeds and
> transmitting them both, or
> running a feed through something with delay (like a
> tape deck) and
> transmitting it and the original.
> 
> In any case, I bet we all believe there is no long
> path involved.
> 
> 
> Luego,
> 
> Chuck
> 
> -----Original Message-----
> From: hard-core-dx-admin@xxxxxxxxxxxxxxxx
> [mailto:hard-core-dx-admin@xxxxxxxxxxxxxxxx]On
> Behalf Of Henrik Klemetz
> Sent: Wednesday, October 09, 2002 10:12 AM
> To: J999w@xxxxxxx
> Cc: Hard-Core-DX@xxxxxxxxxxxxxxxx
> Subject: Re: [HCDX] Mediumwave echo ?
> 
> 
> Hi John and Chuck,
> Why not consider another down-to-earth option, a
> second transmitter on this channel, located
> somewhere
> else in Cuba?
> Henrik
> 
> --- J999w@xxxxxxx skrev: > Hello
> all,
> >
> > I was reviewing a recording I made of Radio
> Rebelde,
> > Cuba from October 3,
> > 2002 at approximately 0100z on 900khz and heard
> > something interesting. What
> > was initially a normal sounding signal, developed
> an
> > echo that lasted for
> > about 3 minutes, then dissapeared, reverting back
> to
> > normal again.
> >
> > Using CoolEdit software, I measured the delay to
> be
> > 450milliseconds. I wonder
> > what could have caused this delay ? Did it
> originate
> > in the transmitted audio
> > such as a satellite delay, or is it a propagation
> > phenomenon? Reading through
> > the literature, I learned that the longpath
> > propagation delay in on the order
> > of 130milliseconds.
> >
> > I have a short audio clip at:
> > http://members.aol.com/j999w/DX
> >
> > Any ideas?
> >
> > 73!
> >
> > John Wilke
> > WB9UAI
> > Milwaukee
> > R71a and vertical
> >
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>
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THE INFORMATION IN THIS ARTICLE IS FREE. It may be copied, distributed
and/or modified under the conditions set down in the Design Science License
published by Michael Stutz at http://dsl.org/copyleft/dsl.txt