Physician. HamRadio Operator (EA4LE and KC2HAX). Deep Sky Astrophotographer. Classic Radio and HIFI gear collector. Always tinkering.
Las Rozas de Madrid, España
Joined July 2022
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NASA's Psyche mission received here while in lock with Madrid DSN station 35m DSS55 antenna. Range is 166M km. Received with the 1.2 m dish. About 10 dB over noise level.
Almost the Ides of March and the STEREO-A decoding has not been killed yet here at EA4LE ;) 22.5 M km away from Earth STEREO-A signal is barely 2 dB over the noise level and #SatDump continues to properly manage it decoding all broadcasted products in beacon mode.
Looking forward to MicroMeet 2024, the Iberian microwave enthusiasts annual meeting. 22 days to go :) micromeet.org/
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#PeregrineMissionOne with some recent signal drops, evident in the waterfall
Juno spacecraft. Mission perijove #57. 668M km from Earth. 8.4 GHz residual carrier detected here with 1.2m dish antenna, about 3 dB SNR. Data Doppler corrected with EA3HMJ JPLAstroserver and captured with SigDigger. Analysis with GNU Radio.
Psyche space probe, two months after launch and on its cruise trajectory to asteroid Psyche. Range from Earth 37.8M km. Signal analysis with SigDigger and GNU Radio.
I employed the method devised and illustrated by Daniel @ea4gpz at the Berkeley Breakthrough Listen Research Experience @BerkeleySETI to identify Juno's -Jupiter orbiting space probe- residual carrier signal. Data recorded using a 1.2 dish antenna and homebrew X-Band rx system.
JUNO spacecraft orbiting Jupiter. 630 M kilometres from Earth. Testing the recently upgraded 8.4 GHz d/converter. Long integration time and doppler correction with SidDigger and @ea3hmj s/w tracking suite
2023/12/11 and still decoding STEREO-A beacon w/ 1.2m dish. Made improvements in the 8.4 GHz d/conv. Extra amplification stage just before the image rejection filter. At least 1.5 dB SNR gain after mod as reported by SatDump. Overall NF not yet measured, but definitely improved.
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First detection of Jupiter orbiting spacecraft Juno. My DSN DX record to date, 618 million km from Earth. Without the help and teaching of @eb3frn, @ea3hmj and @ea5dom to extract the signal from the noise using @BatchDrake SigDigger tools, it would not have been possible.
The Sun today as seen by the STEREO-A spacecraft Secchi telescope with the 195Å UV Filter. Sunspot region AR3500 is the source of yesterday’s Earthbound M9.8 CME (Coronal Mass Ejection) expected to reach Earth tomorrow. Data received at EA4LE, acquired with @aang254 SatDump.
M9.8 solar flare at 19:50 UTC yesterday, probably Earthbound CME. Turned attention to STEREO-A. Not that I expect to see anything because the beacon transmits 'live,' but... curiosity. Interesting finding is that at 16.7M km, still passing CRC check, 4 dB SNR) w/ 1.2m dish
Master spacecraft cracker Dani did it again!
Nice easter egg in the idle Space Packets from @MissionToPsyche X-band telemetry.
ALT A screenshot of a Jupyter notebook. The payload of idle space packets turns out to be an ASCII string which contains a list of names, some kind of logo in ASCII art, and the messages "Rohan the Destroyer b.12/9/21" and "This spacecraft is equipped with the latest ABS and pDMA technologies".
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Psyche spacecraft en route to Psyche Asteroid on Mission day one. In contact with NASA Madrid and switching transmission modes.
A great learning opportunity!
New blog post: BSRC REU GNU Radio tutorial recordings. The recordings for the @gnuradio tutorials that I gave to the @BerkeleySETI REU students over the summer are in YouTube. These are 5 two hour beginner tutorials on topics related to SETI and astronomy. destevez.net/2023/10/bsrc-re…
ALT A screenshot from one of the tutorial videos, which shows a GNU Radio flowgraph running and displaying some plots.
