Remember DSRC? If the initialism doesn’t ring a bell, don’t worry - Dedicated Short-Range Communications, a radio service intended to let cars in traffic talk to each other, never really caught on. It looks as thoughthe documentation will arrive in the future, but there is a very informative blog post from one team member about the helical antenna design most of the teams are using to eavesdrop on the hydrogen line.Ĭontinue reading “SpaceAusScope Team Listens To The Galaxy” → Posted in Radio Hacks, Space Tagged Australia, Radio Astronomy, Radio Telescope So even if you don’t live in Australia, you might want to check out their website. Australian hobbyists have formed a group, SpaceAusScope, where teams across Australia are building radio telescopes with the plan - which has been delayed by the pandemic - of collecting data and providing it for public analysis.Ī secondary goal of the group is to provide better documentation for amateur radio telescope builders. Some of the first video from the Apollo 11 landing, for example, came in from “the dish” - a very large radio telescope down under. It is a great site low in the Southern hemisphere and there are lots of sparsely inhabited areas free from light and radio interference. Posted in Radio Hacks Tagged EME, IoT, ISM, LoRa, moonbounce, Radio Telescope, spaceĪustralia has always had a reputation for astronomy. LoRa is a versatile technology, and can even be used for tracking your High Altitude Balloon that’s returned to Terra Firma. By plotting frequency and doppler delay, the LoRa transmission was able to be used to get a radar image of the moon- a great dual purpose use that is noteworthy in and of itself. The result? Not only were they able to receive the reflected transmission using the same transceiver they modulated it with - an off the shelf IOT LoRa radio - but they also recorded the transmission with an SDR. The team amplified the signal to 350 Watts, and then used the radio telescope’s 25 Meter dish to direct the transmission toward the moon. Operating in the 70 cm Amateur Radio band (430 MHz) meant that the LoRa signal was not limited to the low power signals allowed in the ISM bands. A radar image of the moon generated from LoRa Moonbounce The Dwingeloo Radio Telescope is no stranger to Amateur Radio experiments, but this one was unique. The team that pulled off the LoRa Moonbounce consisted of folks from the European Space Agency, Lacuna Space, and the CA Muller Radio Astronomy Station Foundation which operates the Dwingeloo Radio Telescope. But what if the power wasn’t low, and the antenna not tiny? You might just bounce a LoRa message off the moon. The LoRa radio protocol is well known to hardware hackers because of its Long Range (hence the name) but also its extremely low power use, making it a go-to for battery powered devices with tiny antennae.
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