John:
A one-hop (up and down) satellite delay is about 250 ms since:
- it's 22,500 miles up and 22,500 miles down for a total of 45,000 miles
- speed of light is 186,000 miles per second
So it's about 1/4 of a second delay, and I have no idea how the 450 ms echo
was generated other than wild id
Hi John and Chuck,
Why not consider another down-to-earth option, a
second transmitter on this channel, located somewhere
else in Cuba?
Henrik
--- [EMAIL PROTECTED] skrev: > Hello
all,
>
> I was reviewing a recording I made of Radio Rebelde,
> Cuba from October 3,
> 2002 at approximately 0100z
02 10:12 AM
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
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
--- [EMAIL PROTECTED] skrev: > Hello
all,
>
> I
lto:[EMAIL PROTECTED]]
Sent: Wednesday, October 09, 2002 11:19 PM
To: HC-DX E-List
Subject: Re: [HCDX] Mediumwave echo ?
A true echo from a simultaneous long and short path reception on MW would be
all but impossible propagation wise from most places on the planet on most
any day or season. Now on 15
The sources of the echo are multiple transmitter sites of XEW, Mexico.
dc
---
David E. Crawford
Titusville, Florida
United States of America
28.5146N 80.8342W
[EMAIL PROTECTED]
---
In a message dated 10/11/02 12:21:24 AM Central Daylight Time,
[EMAIL PROTECTED] writes:
> The sources of the echo are multiple transmitter sites of XEW, Mexico.
>
> dc
>
Tape delay?? Certainly not satellite delay ... almost a half second? Which
is the likely second transmitter??
jw
---
--- [EMAIL PROTECTED] skrev: > In a message dated
10/11/02 12:21:24 AM Central
> Daylight Time,
> [EMAIL PROTECTED] writes:
>
> > The sources of the echo are multiple transmitter
> sites of XEW, Mexico.
> >
> > dc
> >
> Tape delay?? Certainly not satellite delay ...
> almost a half second
The source of the echo is two things, at least 2 Transmitters, and a Digital
Link/Digital Compressor between the Transmitters (Converting Analog signals to Digital
signals make a lot of Delay, because conversion from Analog to Digital and back again
takes a lot of Time, sometimes more than a se
In a message dated 10/10/02 1:57:47 PM Central Daylight Time,
[EMAIL PROTECTED] writes:
> Maybe this is naive, but could this echo have been intentional (like
reverb)?
Certainly, but it was pretty long, PLUS it came and went in less than 5
minutes.
I went over the recording and cannot pull ou
