Project Moonbounce

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Radio communication over a distance of at least 2 light-seconds using the Moon as reflector.
Anyone interested in actually talking to him/herself? We can do that - you're welcome.

Preface in German language:

Project Moonbounce soll den Besuchern des Chaos Communication Camp 2011 den Amateurfunk allgemein und eine seiner spektakulärsten Spielarten im Besonderen nahebringen. Erde-Mond-Erde (EME, Moonbounce) Funkverkehr direkt auf dem Camp und für alle zu bestaunen. Das Camp ist, wie unsere Zielgruppe, höchst international und die Sprache größtenteils Englisch. Die Moonbounce Projektseite ist daher ebenfalls in Englisch gehalten. Sollten trotzdem oder grade deswegen Fragen auftreten, einfach bei OE4DNS anklopfen!


Project Moonbounce's aim is to provide the visitors of 2011's Chaos Communication Camp some interesting insights into amateur radio in general and into one of its most spectacular varieties in particular. Earth-Moon-Earth (EME, Moonbounce) radio communication directly on the campsite and for everyone's amazement. Since the camp's language is mostly English due to the very international audience, this site is as well.

Project Moonbounce is part of Metalab's Leiwandville 3.0 and provided by the people of MetaFunk in cooperation with amateur radio operators from the CCC (Chaoswelle) and from all over the world!

This site is used for organizational purposes. Pse add all infos/thoughts/help offers/donations and whatever you think might help us to reach our goal!


  • We will work in the 2m Band using 2 long Yagi Antennas and a high power amplifier.
  • Togehter with the Chaoswelle we will also be partaking in all other Hamradio Activities on the Camp.




Active Components (radios etc.)

Part Who How Transportation Cost
Antennas / two long 2m (EME)-Yagis OE1RFC, Clemens buy used or new tbd 100 - 400 Euro
Kuhne 2m EME LNA MKU LNA 144 A OE1RFC, Clemens get new one small piece 224,00 Euro + heat sink
Transceiver ?,? IC7000 from OE1RFC at worst tbd ? Euro

Passive Components (cables etc.)

Part Who How Transportation Cost
coaxial power splitter ?,? ? tbd ~60 Euro (Wimo)
sequencer (e.g. arduino with homebrew 2-stage relay board) you? ? ? Euro
coaxial relay, 2kW PEP, >70-80db isolation ?,? ? tbd ? Euro
coaxial relay PA/LNA switching for TRX ?,? ? tbd ? Euro (cheap)
??m Low Loss Coax + N connectors ? ? ? ? Euro
High Power Dummyload ?,? ? tbd ? Euro
High Power SWR-Meter ?,? ? tbd ? Euro

Mechanical Components

Part Who How Transportation Cost
vertical(4-6m?) / horizontal(~3.5m?) mast OE4DNS, Andi get at local store Since I don't transport the Phone cell, there is space for a mast. Zem ? Euro
Erdanker OE4DNS, Andi existing ? -
steel cable OE4DNS, Andi existing ? -
elevation rotator courtesy of Marc, DK7MS Kenpro KR-500 (similar to Yaesu G500?) none -
azimuth rotator Alois, OE3ATC Hy-Gain ??? medium size -
Thrust bearing (Oberlager) + Rotator platform Clemens, OE1RFC if we need one, depends on setup small ?


Part Who How Transportation Cost
halogen spotlight for nightly repair work 1 from OE1RFC, ? ? ? -
crime scene tape ? ? ? -
green laser (for rotator calibration) ? ? ? -


After collecting all equipment a testing setup will be created to check if all components are working, if nothing is missing and if we can improve our setup.

Clemens suggests Stadtflucht4 (roughly 1 month ahead and 2 weeks after Ham Radio)


At least one truck and one big van with trailer.

-> see ORGA Leiwandville 3.0


 				      __\-o\-\-\-\-\				  /.    \
 				     /   /					 |    O  |
 			  [LNA]-[R]--O  O					  \ o_  /
 			    |    |   \ /|					  
 			    |	 |  \-o-|\-\-\-\-\				
 			    |	 |	|		
 			___/	 |	|		
  ____	 _____	      /		 |	|	
 | PC | | TRX |o-----[R]--[PA]---+	|	
 |____|-|_____|			   ____/ \____			(cc-by-sa oe1rfc, oe4dns)

Working the Moon


There will be a special event callsign for the Camp that we can use. An alternative would be using home-callsigns with DL prefix.


Conds - Space-Weather/Moon constellation

  • Moon is full which does not really matter but looks nice :-)
  • Earth-Moon distance: 395000 km - could be closer but we're not going to change that.
  • Path in the sky at Finowfurt...