Sunday, January 16, 2011

Listening to Moonbounce on 1296MHz with your browser

I noticed today that the PI9CAM group who use a huge 25m diameter dish for 1296MHz moonbounce would be active. The great thing about these guys is that you can listen to their receiver using a WEBSDR receiver at

I took a very quick video - which isn't great quality, but you'll hear PI9CAM working a JA station. Remember the signals are bounced off the moon - a round trip around around 500,000 miles! You get a demonstration of the speed that radio signals travel at (the speed of light!) by listening to the echo from PI9CAM. You'll hear him stop transmitting and then after a pause, you'll hear the echo as it comes back from the moon.


A lot of EME takes place using the WSJT modes, but the contact on the video is in SSB - testament to the great equipment in use at PI9CAM! As I write this, I'm listening to LX1DB on SSB too - so I highly recommend you have a listen next time the group is active - check their webpage for details.


Theo said...

Watch these links, video's i have made

Steve GW7AAV said...

Just a little point Tim. The WEB SDR is on 70cms not 23cms, 430MHz not 1296MHz. Unfortunately I can't access the video at the moment so I will look in again in the morning from home.

Tim said...

Hi Steve,

I think the SDR varies between which band they have the dish on. When I listened on Sunday,it was unquestionably on 1296MHz!

However, as you rightly say, if you go to the webpage now, its a recording made on 432MHz.


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