HFU HF Underground
Loggings => Utility => Topic started by: Land5urfer on March 29, 2013, 1758 UTC
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Started at 16:45z, Mar. 29. Signal is weak up here in SW Ontario, can just barely hear female voice reciting phonetic / numeric code. Transmitted for less that 60 seconds, then followed by another short message at approx. 16:50 z for less that 60 seconds. Another message transmitted at 17:00 z, for less than 60 seconds; heard "Sierra, romeo, whiskey, sierra, yankee, two..." Then another 40 sec. message was transmitted at exactly 17:30 z, but the signal was still too weak to hear the complete details.
---Update, 18:00 z: another message with same lead-in "SRWSY2..." Signal was still too weak to hear complete transmission.
---Update, 18:45 z: Signal is much stronger now, heard the following: "This is Andrews... Core For new book, core for new book... YYAXM, YYAXM, standby." Which was then followed by: "SRWSY2, SRWSY2, SRWSY2, message follows. VQ7PCSAQ627G, VQ7PCSAQ627G. This is Andrews, out."
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"---Update, 18:45 z: Signal is much stronger now, heard the following: "This is Andrews... Core new book, core new book... YYAXM, YYAXM, standby." Which was then followed by: "SRWSY2, SRWSY2, SRWSY2, message follows. VQ7PCSAQ627G, VQ7PCSAQ627G. This is Andrews, out.""
You might have heard "For new book" I have heard them calling "For ____" on EAMs. YYAXM should be 3 times normally
Was there any thing with in the same message as SRWSY2 before VQ7P.....? such as SRWSY2VQ7P....?
The short messages might have been skyking messages.
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Yeah I have it here just now at 2045z as "For New Book".
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Yeah I have it here just now at 2045z as "For New Book".
Thanks!
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Land5urfer, the two syllable, or two word, tactical call signs are a standard. You will hear such very often. Some change as frequently as every 6 hours, so the same station can be heard with multiple callsigns during a flight, and sometimes a station will have different callsigns on different nets or frequencies. So that you will swear you heard that voice or that sound to the transmitter using a different callsign a minute ago, and you might be right. Also the “for” portion of the message is frequent, a message can be “all stations” or it can be “for” specific recipients.
T!
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Land5urfer, the two syllable, or two word, tactical call signs are a standard. You will hear such very often. Some change as frequently as every 6 hours, so the same station can be heard with multiple callsigns during a flight, and sometimes a station will have different callsigns on different nets or frequencies. So that you will swear you heard that voice or that sound to the transmitter using a different callsign a minute ago, and you might be right. Also the “for” portion of the message is frequent, a message can be “all stations” or it can be “for” specific recipients.
T!
Man, I'd love to sit down and have a beer with you sometime. :)
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Heard USB xmsn on 8.992 MHz at 23:04 Z July 13, 2019. Go to
https://drive.google.com/open?id=1rcWX4erRvo6XDIN2YEJ_rmWKilGDFqQi (https://drive.google.com/open?id=1rcWX4erRvo6XDIN2YEJ_rmWKilGDFqQi)
for 45 second MP3 file which was lightly edited for intelligibility (volume boost, treble increase, noise reduction). Started recorder upon tuning in signal so I do not know length of xmsn.
Used Icom 7300 with Ultimax-100 EF amateur radio antenna in sloper config. High end of antenna at about 25 ft. AGL.
Unknown service but probably USAF. Content is coded and type of broadcast is unknown to me. Others hearing similar xmsn on same frequency state/suggest it may be an Emergency Action Message https://www.numbers-stations.com/military/usa/hfgcs/ (https://www.numbers-stations.com/military/usa/hfgcs/).
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https://en.wikipedia.org/wiki/High_Frequency_Global_Communications_System