{"id":1873,"date":"2026-06-23T23:46:42","date_gmt":"2026-06-23T23:46:42","guid":{"rendered":"https:\/\/www.isi.edu\/centers-serc\/?page_id=1873"},"modified":"2026-07-02T22:52:39","modified_gmt":"2026-07-02T22:52:39","slug":"global-telemetry-access","status":"publish","type":"page","link":"https:\/\/www.isi.edu\/centers-serc\/research\/nanosatellites\/maveric\/global-telemetry-access\/","title":{"rendered":"Global Telemetry Access"},"content":{"rendered":"<p><strong>MAVERIC<\/strong> has an open beacon that is operating intermittently throughout the orbit after launch.\u00a0 This page provides information for operators around the globe to track MAVERIC and capture a beacon, and then convert it into digital information.\u00a0 We would be grateful if any\/all operators could send this information to our central ground station e-mail so we can constantly update the satellites status and health.\u00a0 This page will also have the latest TLE listed, but please check it each day for updates.<\/p>\n<p>Satellite Name: \u00a0MAVERIC<br \/>\nNORAD ID (at launch):<br \/>\nDownlink Frequency: \u00a0437.575 MHz (UHF, 70 cm band)<br \/>\nBandwidth: \u00a0~20 kHz<br \/>\nAntenna Polarization: \u00a0Circular<br \/>\nBeacon Interval (at launch, but may change over time): \u00a0~3 minutes<br \/>\nTransceiver: \u00a0GomSpace NanoCom AX100<br \/>\nModulation: \u00a0GFSK (Gaussian FSK), BT = 0.5, NRZ, MSB-first<br \/>\nBaud Rate: \u00a09600 bps (nominal)<br \/>\nFraming: \u00a0AX100 &#8220;Mode 5&#8221; \u2014 ASM + Golay (0x930B51DE sync word, Golay(24,12) length field)<br \/>\nForward Error Correction: \u00a0Reed-Solomon (255,223), CCSDS, with CCSDS data scrambling<br \/>\nDecoder: \u00a0gr-satellites &#8220;AX100 ASM+Golay&#8221; (provided in MAVERIC_beacon_decoder.zip)<\/p>\n<p>Latest TLE (check weekly for updates):<\/p>\n<p>[TLE line 1 ]<br \/>\n[TLE line 2 ]<\/p>\n<p>How to capture and decode a beacon:<\/p>\n<p>You will need an RTL-SDR (or any SoapySDR receiver) and a UHF antenna, plus our decoder package.\u00a0 Everything you need is in one download on this page: \u00a0MAVERIC_beacon_decoder.zip.<\/p>\n<p>1.\u00a0 Download <a href=\"https:\/\/www.isi.edu\/centers-serc\/wp-content\/uploads\/sites\/12\/2026\/07\/MAVERIC_beacon_decoder.zip\">MAVERIC_beacon_decoder<\/a> from this page and unzip it.<br \/>\n2.\u00a0 Install GNU Radio with gr-satellites, one time.\u00a0 The easiest way is the radioconda distribution, which bundles everything.\u00a0 Install it from <a href=\"https:\/\/urldefense.us\/v2\/url?u=https-3A__github.com_radioconda_radioconda-2Dinstaller&amp;d=DwMFaQ&amp;c=qzHnJIRvjI6L-clJH8JwLQvf_Iq43fzikf6aoxZgMb8&amp;r=moJBPNv5aA_jvwosZBXHFESkBrG_yOnnPgr0ofrsNbM&amp;m=Xw-r9RLn2n16os4-1BUktKmKLseVIsmWibabfwX1YnX4cdhdBtz0FM3F4w0uMiXr&amp;s=bMDadDbfIp9t55QOD4Et3J2yn5peTmKbYCZn0lGRN0w&amp;e=\">https:\/\/github.com\/radioconda\/radioconda-installer<\/a>, then open a new terminal and run \u00a0gr_satellites &#8211;version \u00a0to confirm it works.<br \/>\n3.\u00a0 Plug in your dongle, point your antenna at MAVERIC during a pass, and run \u00a0python3 MAV_BEACON.py.\u00a0 It tunes to 437.575 MHz automatically and can be launched from any folder.\u00a0 Each decoded frame is written to maveric_beacon.log next to the program, one line per frame as a timestamp followed by the hex.\u00a0 Press Ctrl+C after the pass.<\/p>\n<p>To decode a recording instead of live radio, open MAV_BEACON.grc in GNU Radio Companion and switch the source from the RTL-SDR to the File Source; the included README has the details.<\/p>\n<p>A note on Doppler:<\/p>\n<p>MAVERIC transmits a fixed 437.575 MHz, but because the satellite is moving relative to you, your station receives the signal shifted by up to about 10 kHz over a pass, so your receiver has to account for it.\u00a0 For coverage across the whole pass, the decoder works with Gpredict: \u00a0load MAVERIC&#8217;s TLE into Gpredict, point its Radio Control at the decoder (localhost, port 7356) and Engage, and Gpredict will steer the tuning automatically.\u00a0 The included README has step-by-step setup.\u00a0 Without Gpredict a fixed tune still decodes most of a pass, best near the highest point of the pass.\u00a0 If you can see the signal but get no decodes, your dongle may be off-frequency, and you can use the freq_corr or freq_offset settings to compensate.<\/p>\n<p>Sending us your catch:<\/p>\n<p>Please decode the beacon and send the decoded frames to our\u00a0e-mail, <a href=\"mailto:maveric@isi.edu\">maveric@isi.edu<\/a>.\u00a0 Attach your maveric_beacon.log file, or paste the stdout hex lines into the e-mail, and include the time in UTC, your location or grid square, and the frequency you observed.<\/p>\n<p><strong>Thank you for helping us track MAVERIC!<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>MAVERIC has an open beacon that is operating intermittently throughout the orbit after launch.\u00a0 This page provides information for operators around the globe to track MAVERIC and capture a beacon, and then convert it into digital information.\u00a0 We would be grateful if any\/all operators could send this information to our central ground station e-mail so&hellip;<\/p>\n","protected":false},"author":77,"featured_media":0,"parent":1043,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"news_source":"","news_author":"","external_news_link":"","footnotes":""},"class_list":["post-1873","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Global Telemetry Access - Space Engineering Research Center<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.isi.edu\/centers-serc\/research\/nanosatellites\/maveric\/global-telemetry-access\/\" \/>\n<meta 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