[amsat-bb] Re: echo
Kevin J. Smith
kevin.j.smith at comcast.net
Sun Jan 20 10:22:11 PST 2008
I missed Saturday morning's transmissions but managed to record both hours
this Sunday morning. Like Luc I could only barely make out a signal on
6.7925 but heard the signal on 7.4075 MHz more as continuous signal. By my
ear I could not distinguish between a ground wave and the moon reflected
wave, if there was one. I recorded the listening sessions using HRD and
used a 10-Mb file size limit and I went to bed around 15-minutes into the
7.4075 transmission. My setup is modest; an FT-817; ~100-ft RG-213/U to a
Butternut vertical. There was considerable noise ranging from S5 to S9.
From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
Behalf Of Luc Leblanc
Sent: Sunday, January 20, 2008 4:49 AM
To: amsat-bb at amsat.org
Subject: [amsat-bb] Re: echo
On 20 Jan 2008 at 1:14, Jeff Yanko wrote:
> Did anybody record a .wav or .mp3 file of this experiement. If so, I
> many would like to hear it. Especially those who weren't able to take a
> Jeff WB3JFS
It is 0436 am and i recorded about 5 meg near an hour of only one signal on
7.4075mhz. I will have to listen the whole recordings and recheck them with
spectran to see if this signal was coming directly from the Moon or from the
HAARP site in Alaska?
I barely guess the signal on 6.7925 Mhz but on 7.4075mhz spectran measure a
noise floor at +_ -50db and the signal was around -30 db and curiously
the fast fading present on the other broadcast stations around.
I don't believe an echoed signal from the moon can return back through the
ionosphere when the propagation seems to be rock solid at that time on a
near 40 meter band frequency!
But the experts will probably give their own opinions? And for those who
get an 1.8 meg .WAV file on their mail server box, i can send you a short
piece of my recordings
Luc Leblanc VE2DWE
WAC BASIC CW PHONE SATELLITE
Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
More information about the AMSAT-BB