Stefan - Ive got the Alaska VLF system online now and needs tweeking/cal but I can see Alphas and most of the usual suspects - the path over the Northern Auroral pole towards Europe is still rather "warm" and light but getting better daily - The Rx is an SDR IQ and E/F probe up at 40ft - next to a quiet lake, in a glacial valley surrounded by mountains - I hope to keep this optional system available when I go back to the works qth in a few days back in Oklahoma-
Cheers
Laurence KL 7 UK x KL1 X BY3A et al
Date: Fri, 1 Oct 2010 15:55:57 +0200
From: [email protected]
To: [email protected]; [email protected]; [email protected]; [email protected]; [email protected]
Subject: VLF: DK7FC's 7th VLF kite experiment
Dear LF/VLF,
My next VLF kite experiment will be tomorrow, saturday, 2nd october :-) After my request to the german air traffic control i got a very kind telephone call at 01:30 AM and later i got the permission to go up to 200 m above ground. See attached mail if of interest for you.
So, if there will be enough wind and no rain, i will try to become QRV at arround 8 UTC.
Tomorrows program:
- (after some resonating tests): Transmitting a short message on 8970 Hz, mode: DFCW-600, hoping to be visible on several receivers in the EU region and maybe Canada and USA (!?)
- Transmitting a CW message (in 12 wpm and in 25 wpm), hoping to be audible at Bernd/DF8ZR (16 km range) and my grabber (40 km)
- Maybe trying a xband QSO 9kHz/144 MHz to DF8ZR
- Transmitting a message on 6470 Hz, mode: DFCW-600, hoping to be visible at many RX, especially Renato Romero who has set up a grabber page at http://www.vlf.it/cumiana/livedata.html
- Transmitting a 30 minute carrier on 8970 Hz which allows long time integration. Paul Nicholson wants to try to record the VLF audio stream from Florida and maybe extract my signal.
- Being visible at PA3FWM at the university of Twente who set up a grabber page at http://websdr.ewi.utwente.nl:8901/grabber.html
- Being visible at SQ5BPF and maybe a russian station?
- Being visible at Paul Nicholson and Markus/DF6NM, of course ;-)
- Finally reaching the 1 A antenna current limit
- and all i have forgotten
I will record my signal of my grabber and will extract an audible signal, if possible. This will be filtered, frequency shifted to 800 Hz and published here as a mp3 file.
My grabber will show the 8970 Hz signal at http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html
The 6470 Hz will be visible at http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html
It is now on the Canadian and US RX stations to make possible what still seems to be inpossible: A transatlantic transmission/reception. The first time my signal can reach a 50 mW ERP limit (wind forecast announces strong wind, so a high kite angle, so a good efficiency!) on 8970 Hz. It is still not sure how the propagation behaves on this frequency at this time and locations so we may see a surprise. Of course any report is very much appreciated, no matter of what distance or country. Every clear reception above 859 km is a new world record by amateurs on VLF!
So, hope the sun will shine at good wind conds and low QRN and high interest :-)
Best 73, CU, Stefan/DK7FC
PS: Markus/DF6NM, will you be on the phone again to make QSP? :-)
--Forwarded Message Attachment--
Date: Fri, 1 Oct 2010 15:19:40 +0200
From: [email protected]
To: [email protected]
Subject: Antwort: Fwd: NOTAM_siehe Anlage anbei
Sehr geehrter Herr Schäfer,
das entsprechende NOTAM wurde veröffentlicht (die veröffentlichte Uhrzeit wird dort in UTC / GMT angegeben - entspricht 0900 - 1800 Ortszeit)
Ihrem Vorhaben spricht unsererseits nichts mehr entgegen.
Viel Erfolg und mit freundlichen Grüßen
Jochen Knoblauch
CC/FB - M/BNL
Besondere Nutzung Luftraum/ Special Use Airspace
Militärische Übungen/Military Exercises
DFS Center Langen
Am DFS Campus 1
63225 Langen
Tel. +49 (0) 6103/707 - 6287
Fax: 6205
Bw Netz 90 4223 774
email: [email protected]
Sehr geehrter Herr Stumpe,
Anbei alle Informationen zum gewünschten Drachenaufstieg, geplant für morgen, Samstag, den 2. Oktober 2010.
Viele Grüße,
Stefan Schäfer
-------- Original-Nachricht --------
Bitte um Herausgabe einer NOTAM, Aufstieg eines Einleiner-Drachens
Sehr geehrte Damen und Herren,
Ich möchte für Samstag, 2. Oktober 2010 einen Drachenaufstieg anmelden und bitte um die Herausgabe einer NOTAM. Aufgrund er Windvorhersage erscheint dieser Tag für einen Aufstieg geeignet. Da der Termin nun weniger als 48 Stunden (33 h) entfernt liegt, bitte ich um eine kurze Rückmeldung ob ausnahmsweise noch eine Freigabe für die Aktion erteilt werden kann oder nicht.
Aufstiegsort, Koordinaten: Neutscher Höhe (49°46’35.05’’N, 8°41’56.74’’E)
Maximale Drachenhöhe über Grund: 200m
Uhrzeit: 9 Uhr bis 18 Uhr
Sollte das Experiment wegen Windausfall oder aus sonstigen Gründen ausfallen müssen, benachrichtige ich die DFS telefonisch.
Anbei meine Erlaubnis durch das RP Darmstadt.
Viele Grüße,
Stefan Schäfer
=
|
|
