[QCWA] Ordinary 40 meter dipole captures signals reflected by our
Moon
Richard Rucker
rrucker at verizon.net
Tue Jan 22 10:50:42 EST 2008
Randy Hall ,K7AGE, in Grass Valley CA posted a 15 min video here:
http://www.youtube.com/watch?v=L5E2ntIxAsc
He began recording on 6,792.50 kHz, 19 Jan 08 at 9:20 p.m. PST using a:
Kenwood TS 2000 with a 200 Hz, then 100 Hz, audio filter on
Dipole antenna cut for the 40m band, up 25 to 30 feet
He recorded Digipan's waterfall* to display the audio spectrum of
the signal transmitted by the HAARP array and
the tiny bit of the bounced signal captured by his dipole.**
He recorded the audio of the signals received so that you can hear them.
*see for details
http://www.digipan.net/
**This was a moon-bounce experiment in which most everyone could
participate!
==================
What you see on the waterfall and hear in the audio is a keyed CW
carrier:
2 seconds on (HAARP transmitting) followed by
3 seconds off to listen for the reply from the moon.
HAARP's signal from Gakona, Alaska, as heard in Grass Valley was 30 dB
over S9, despite the fact the HAARP antenna was beaming most of its
considerable power at the moon's surface.***
***As HAARP engineer Steve Floyd, W4HYD, notes below:
"Our ERP at 6.7925 MHz and 7.4075 MHz would be approximately +94 dBW
(!)
Expected total propagation delay time is 2.7 seconds."
>
The strongest replies heard in Grass Valley were S2 to S3 and were
quite audible, almost as loud as the transmitted signal.
During the last 4 minutes, Randy turned on a real-time plot of the
amplitude of the two signals as output by a digital tone decoder. This
clearly shows the waxing and waning of the replies.
13 minutes into the video, HAARP switched to the second freq:
7,407.50 kHz. The signals recorded were very similar to the previous
ones.
Randy has more interesting ham radio videos posted here:
http://www.youtube.com/profile?user=K7AGE
Ref: my recent emails on the subject and these links:
--------------------------------------------------------------------
HAARP's home site:
http://www.haarp.alaska.edu/
November 13, 2004: Ed Kennedy, K3NS, speaks on HAARP
http://homepage.mac.com/rrucker/chapter91/past_events/archived_events.html
July 8, 2006: Steve Floyd on ionospheric research using IRI at HAARP
http://homepage.mac.com/rrucker/ch91_2006/past_events/
Begin forwarded message:
----------------------------------
> From: "Floyd, Steve \(US SSA\)" <steve.floyd at baesystems.com>
> Date: January 21, 2008 8:57:38 PM EST
>
> Subject: FW: HAARP-LWA Moon Bounce on YouTube
>
> Greetings All,
>
> For the moon bounce experiment we were running all 180 transmitters
> at full power, carrier ON for 2 seconds, then OFF for 3 seconds,
> precisely timed starting at the top of the hour, repeating the 5
> second cycle every 5 seconds for 1 hour at 6.7925 MHz, and then 1
> hour at 7.4075 MHz. We aimed the antenna beam accurately at the
> moon, updating our aim position every 3 minutes to continuously
> track the moon.
> Our ERP at 6.7925 MHz and 7.4075 MHz would be approximately +94 dBW.
> Expected total propagation delay time is 2.7 seconds.
>
> Please see the youtube posted video link below. This is an
> excellent reception report with very strong echo signals received in
> the middle of the video post. A very nice video indeed from this
> individual in Washington state.
>
> All 180 transmitters are operating extremely well and we are
> refining our maintenance routines to further enhance the excellent
> reliability we are now experiencing.
>
> Let me know what you think of the link below.
>
> Regards,
> Steve
>
> Check this site: http://www.youtube.com/watch?v=L5E2ntIxAsc
>
> About 15 minute video; in the latter half K7AGE begins to show
> the total power vs time trace. He also shows the transition from
> 6.7925 MHz to 7.4075 MHz. A good video production.
>
>
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