# Ehman 2010: The Big Ear Wow! Signal (30th Anniversary Report) > Jerry R. Ehman, 2010. 24 records on Mysteries Department cite it. The primary reference for every recorded parameter of the signal and for the discovery… Source: https://mysteriesdept.com/sources/SRC0CXZ4CKA0F1B/the-big-ear-wow-signal-30th-anniversary-report Publisher: Mysteries Department Licence: CC BY 4.0 (credit Mysteries Department and link the page) --- [Sources](https://mysteriesdept.com/sources)[Wow! signal](https://mysteriesdept.com/mysteries/wow-signal)Ehman 2010 **0** # The Big Ear Wow! Signal (30th Anniversary Report) Jerry R. Ehman, 2010. _Big Ear Radio Observatory / NAAPO (bigear.org)_. Completed 9 July 2007 and last revised 28 May 2010. A line-by-line reconstruction of the printout and the telescope's operation: the 6EQUJ5 intensity code, the frequency of 1420.4556 ± 0.005 MHz, the two J2000 positions, the 54/212 Jy flux, the 72-second duration, the two-horn problem, and the author's assessment of interference, reflection, scintillation and extraterrestrial explanations. Includes a scan of a colour copy of the printout. **Wow! signal** Web pageCopy of **[The Wow! printout](https://mysteriesdept.com/mysteries/wow-signal/artifacts/ART0CXZ50KY2WEN/the-wow-printout)** Checked against the original0 ## What it's used for here The primary reference for every recorded parameter of the signal and for the discovery narrative. ## Cited by on this site 24 records [Terrestrial radio interference, direct or reflected from space debris, that happened to mimic a drifting…](https://mysteriesdept.com/mysteries/wow-signal/answers/ANS0CXZ4Q387T0X/terrestrial-radio-interference-direct-or-reflected-from) Answer ANS [The negative (west) horn saw it; the source is at RA 19h28m.](https://mysteriesdept.com/mysteries/wow-signal/answers/ANS0CXZ4WPY4EWY/the-negative-west-horn-saw-it-the-source-is-at-ra-19h28m) Answer ANS [The positive (east) horn saw it; the source is at RA 19h25m.](https://mysteriesdept.com/mysteries/wow-signal/answers/ANS0CXZ4W7A5HDS/the-positive-east-horn-saw-it-the-source-is-at-ra-19h25m) Answer ANS [The Big Ear radio telescope](https://mysteriesdept.com/mysteries/wow-signal/artifacts/ART0CXZ51BC1VMQ/the-big-ear-radio-telescope) ART [The Wow! printout](https://mysteriesdept.com/mysteries/wow-signal/artifacts/ART0CXZ50KY2WEN/the-wow-printout) ART [The Big Ear radio telescope: photo](https://mysteriesdept.com/mysteries/wow-signal/copies/CPY0CXZ51K62203/the-big-ear-radio-telescope-photo) CPY [The Big Ear radio telescope: photo](https://mysteriesdept.com/mysteries/wow-signal/copies/CPY0CXZ51V01WHK/the-big-ear-radio-telescope-photo) CPY [The Wow! printout: scan](https://mysteriesdept.com/mysteries/wow-signal/copies/CPY0CXZ513J6ACQ/the-wow-printout-scan) CPY [The Wow! printout: scan](https://mysteriesdept.com/mysteries/wow-signal/copies/CPY0CXZ50VR7A6J/the-wow-printout-scan) CPY [The Wow! printout: scan](https://mysteriesdept.com/mysteries/wow-signal/copies/CPY0CXZ51V05GYD/the-wow-printout-scan) CPY [Scans of the Wow! printout and the Big Ear record format](https://mysteriesdept.com/datasets/DAT0CXZ4ZWG0KJR/scans-of-the-wow-printout-and-the-big-ear-record-format) Dataset DAT [A comet would have appeared in both horns; the signal appeared in one.](https://mysteriesdept.com/mysteries/wow-signal/evidence/EVD0CXZ4S9J2YQA/a-comet-would-have-appeared-in-both-horns-the-signal) Evidence EVD [Narrow band, hydrogen frequency, fixed on the sky, strong: every property the programme expected of a beacon.](https://mysteriesdept.com/mysteries/wow-signal/evidence/EVD0CXZ4V081AF8/narrow-band-hydrogen-frequency-fixed-on-the-sky-strong-every) Evidence EVD [No modulation or content was or could have been recorded by a 10 kHz, 12-second receiver.](https://mysteriesdept.com/mysteries/wow-signal/evidence/EVD0CXZ4VQP1S0S/no-modulation-or-content-was-or-could-have-been-recorded-by) Evidence EVD [Nothing in the data excludes a reflection from debris moving at the sidereal rate; Ehman regarded it as…](https://mysteriesdept.com/mysteries/wow-signal/evidence/EVD0CXZ4R2G2F70/nothing-in-the-data-excludes-a-reflection-from-debris-moving) Evidence EVD [The frequency lies in a band where transmission is prohibited worldwide.](https://mysteriesdept.com/mysteries/wow-signal/evidence/EVD0CXZ4QB21HGJ/the-frequency-lies-in-a-band-where-transmission-is) Evidence EVD [The intensity profile matched the beam pattern of a fixed point source within error.](https://mysteriesdept.com/mysteries/wow-signal/evidence/EVD0CXZ4QJW0EPN/the-intensity-profile-matched-the-beam-pattern-of-a-fixed) Evidence EVD [Jerry Ehman finds the signal on the printout and writes "Wow!"](https://mysteriesdept.com/mysteries/wow-signal/events/EVT0CXZ4KNW33RC/jerry-ehman-finds-the-signal-on-the-printout-and-writes-wow) EVT [The Big Ear is demolished for a golf course and housing](https://mysteriesdept.com/mysteries/wow-signal/events/EVT0CXZ4MDA6QBY/the-big-ear-is-demolished-for-a-golf-course-and-housing) EVT [The Wow! signal is recorded in channel 2](https://mysteriesdept.com/mysteries/wow-signal/events/EVT0CXZ4KE23Z49/the-wow-signal-is-recorded-in-channel-2) EVT [Jerry R. Ehman](https://mysteriesdept.com/mysteries/wow-signal/people/FIG0CXZ4GZY40AA/jerry-r-ehman) FIG [The Wow! signal](https://mysteriesdept.com/mysteries/wow-signal) The mystery article MYS [What produced the Wow! signal?](https://mysteriesdept.com/mysteries/wow-signal/questions/QST0CXZ4P403VSY/what-produced-the-wow-signal) Question QST [Which horn saw it, and what does the single-horn detection mean?](https://mysteriesdept.com/mysteries/wow-signal/questions/QST0CXZ4PBT6QN1/which-horn-saw-it-and-what-does-the-single-horn-detection) Question QST ## Cite it ``` Ehman, J. R. (2010). The Big Ear Wow! Signal (30th Anniversary Report). Big Ear Radio Observatory / NAAPO (bigear.org). https://www.bigear.org/Wow30th/wow30th.htm ``` [Read it free at bigear.org](https://www.bigear.org/Wow30th/wow30th.htm) Key **SRC** 0CXZ4CKA0F1B Kind Web page Rights The publisher's Kept 29 Oct 2026, for editors Checked Against the published original Added by [apollo](https://mysteriesdept.com/u/apollo) The record Bibliographic records are CC0. Take this one as CSL-JSON, BibTeX or RIS. [CSL-JSON](https://mysteriesdept.com/sources/SRC0CXZ4CKA0F1B/the-big-ear-wow-signal-30th-anniversary-report/csl.json)