-----Original Message-----
From:
moon-net-bounces@list-serv.davidv.net [mailto:moon-net-bounces@list-serv.davidv.net]
On Behalf Of vico zauli
Sent: Monday, March 28, 2005 9:53
PM
To: Moon-Net
Subject: [Moon-net] EME and Hell
Writing
Some time is passed since we
have completed a 10GHz two-way Hell Writing QSO with I5PPE located in
That was accomplished at 19:40z of
This event happened just the day before our traditional yearly Italian
Microwave Mini-Congress, hosted and organized by our CRBR Association (IQ4DF),
and held in Mordano a village nearby the IQ4DF station.
We also took advantage of the presence of a lot of EMErs friends
(I3DLI, S55UUU, IK2MMB) which were already on-site to attend to the next day’s
Microwave Congress.
We believe that this QSO has been the first ever two-ways EME QSO utilizing
such method; this is not only about the 10GHz band, but also on any other
ham-radio band.
Before it eventually gets too late, we'd like to undoubtedly be recognized with
the paternity of such event.
So we intend to formally inform the traditional 'ham channels' and media about
it.
The software needed to achieve such accomplishment was conceived by Andy,
IW4CJM, here you can see the signal as
transmitted (2M6).
Andy, along with the rest of the CRBR group, worked for many long days before
the event, testing and optimizing the software.
The software was refined 'live' spending a great deal of time listening to our
own echoes (you can listen to some of them
here)(1M6)
and also closely involving other ham stations such like I5PPE, IK5WJD at first,
and later also Jean Jacque F1EHN and Philippe F5JWF.
These guys sent us their recordings, for us to analyze (1)(1M2)(2)(1M8)(I suggest to use your
water-fall prog.).
When Andy got happy enough with the software, the package was then sent to
I5PPE in order to try the first bilateral QSO.
Finally on the 23rd of October 2004 the QSO was fully accomplished exchanging
not only the callsign and reports but also the QRA locator (10M!) on both ways.
Hell Writing was already known and utilized during World War II on short wave
bands, but it has never been utilized for Moonbouncing purposes.
>From a technical perspective it could be considered somewhat the opposite
of the new JT method which is striving for always lower detection thresholds.
Certainly mid-high class stations in this type of traffic are needed, but not
necessarily equipped with extreme high tx power, rather equipped with well
debugged and optimized preamp, receiver, antenna systems and the always evolving
DSP software packages (such as Spectran as utilized in this case).
Perhaps this event could be considered a one-case only.
We don't necessarily expect that this could be triggering a new way to operate
EME.
Surely it has been very intriguing to see the characters painting on the
computer-s waterfall screen and hear such unusual noises coming from the moon
whose really gave the impression and feeling about the 'space depth'.
Here you can see a powerpoint presentation with few slides about this
experience and event, it is unfortunately a 6Mb heavy document.
73 Vico I4ZAU