[MilCom] MIL: 11175.0 USB - CAR NOTE; VOCATION; SANDBURG; and CLAYBIRD

Jeff Haverlah jehaverlah at gmail.com
Fri Feb 20 19:51:59 EST 2026


0049z  21 Feb 26

UTC 20 Feb 26

An "odd" traffic day.
An E6B flew from TRAVIS and repositioned to HICKAM, HAWAII.

0004z: CAR NOTE (sounds like) with test count.
[USSTRATCOM CP]

0034z: CLAYBIRD (presumed E6B; not seen on ADSB mapping sites) called and
raised MAINSAIL to enter the net.
0036z: CLAYBIRD entered the net.

0054z: SANDBURG called and raised MAINSAIL to exit the net.
0057z: SANDBURG exited the net.

[0316/17z message traffic window.]
========
0316z: VOCATION (NCS); 375GQO; P1.
375GQOK47TQE3YWLPQEFFASWKJ4BGU
[Fed to TACAMO PAC.]

0320z: CLAYBIRD; 375GQO; h+20/h+50 TACAMO PAC restoral rebroadcast window.
Received on east coast SDR at fair/weak levels.

[0326z+/-: 22.7 KHz (PAC) VLF FSK MSK broadcast.]

0350z: CLAYBIRD (presumed); 375GQO; PAC RESTORAL; extremely weak on all
frequencies on 2 California SDRS.
0420z: Nothing heard.

********
0433z: VOCATION; ESTKGK; 22 characters; P4.
ESTKGKPKPUKF5Q74FOEXQG

0436z: VOCATION; ESM2WB; 31 characters; P4.
ESM2WBUVJBCRXIGYT44IQ3AAKQO7Q73
********

0450z: CLAYBIRD; 375TQO; PAC restoral.
========

[One hour+/- heavy traffic window.]
========
0543z: VOCATION; 37IDCV; P1.
37IDCVFMNV7LX3KTPTRZNXNXD6MKYS

0546z: VOCATION; 37LNEZ; P1.
37LNEZ7SCTGYC3U7P3BUHVOTJHOZRE

0549z: VOCATION: 37PUWR; P1.
37PUWRVR7EGNR2DIMZNHESRVEA6IYQ

0558z: VOCATION; 37PCUH; P1.
37PCUHNBRY7V2T6BNIIWJSYX7KFOXZ

0603z: VOCATION; 37PCUH; 37PUWR; 37LNEZ; h+00/h+30 NCS/ABNCP/Gulf restoral
rebroadcast.

0612z: VOCATION Standing by for traffic.

0614z: CLAYBIRD (strong on California SDR) called VOCATION on 8992 and
raised MAINSAIL to exit the net. MAINSAIL did not respond and the frequency
went quiet. Not found elsewhere.

0630z: VOCATION; 37PCUH; 37PUWR; Disregard during reading; NCS restoral.

0635z: VOCATION: 37PUWR; NCS restoral but "out" (not finished) for higher
priority traffic.

0637z: VOCATION; 37HREL; P1.
37HREL43HXRH77ZS7HOJJJZR2QSCN4

0640z: VOCATION; 37GRCZ; P1.
37GRCZDK6IRIJ7SD5CCAQ4A2BQU7HZ

0643z: VOCATION; 37B74S; P1.
37B74SC2KE7PEF3TCVZN2RARO3YQAJ
1456
0646z: VOCATION; 37INWZ; P1.
37INWZ2NQ7RTMLD4BAVPUJRPSRKVQ5

0649z: VOCATION; 37LNEZ; NCS restoral; final string in the 0630z restoral.

0651z: VOCATION; 373GOV; P1.
373GOVU7NLVNDQULBY4SUT6U3O4Q75

0654z: VOCATION Standing by for traffic.
========

Quiet.

[1124z+/-: AF665A E6B launched from PAX RIVER, flew south to north of the
NORFOLK, VA area for apparent pattern work, then landed at NORFOLK.]

[1256z+/-: AF6063 E6B launched from TRAVIS, flew north to the CONUS
northwest, then south to the California coast, crossed the coast outbound
over the Pacific and flew to HICKAM, HAWAII.]

1425z: MAINSAIL with test count.
1456z: MAINSAIL with test count.
1529z: VOCATION with test count.

[Three rare strings within a short window; unusual.]
========
1725z: VOCATION; ESXTKA; 42 characters; P4; rare.
ESXTKARRNKVHJMNWNEGSGMEJTGN2UMGN2BCGXK6YWF

1735z: VOCATION; 3SJJ3R; 55 characters; P4; rare.
ESJJ3RRZILIQ2A3MADCVU7HQXVLIFVU74QS6JLVS3LBV6VLIV3NJLHT

1811z: VOCATION; ESLUSD; 55 characters; P4; rare; 3 rare strings in a row.
ESLUSDAPPSTEE6UQ6R2E2IVWOB6SME2IJWQ7F6KQA6XKAB6SKZRF6ZS
========

[1923z+/-: AFFD5E E6B launched from SEYMOUR JOHNSON and flew to PAX RIVER.]

========
2247z: VOCATION; FOR PAULI 16 (sounds like); I45JM3TH5IACF4478D46GRJWQXMGD26
I45JM3TH5IACF447D46GRJWQXMGD26

[30 minutes]
2316z: VOCATION; 37RYVG; P1.
37RYVGUBSHG6US767VX3QSEYDQNTIP
[Fed to TACAMO PAC apparently.]

2328z: MAINSAIL worked CLAYBIRD (unheard on SDRs in use).
2331z: CLAYBIRD (unheard) entered the net.
[CLAYBIRD: see 0320z+; TACAMO PAC at that time.]

[2336z+/-: 22.7 KHz (PAC) VLF FSK MSK broadcast indicated on the W1VD
Grabber website.]
[That might imply CLAYBIRD was over his orbit area Due Regard (not showing
on ADSB mapping sites) before he entered the net; or??]

Jeff
-------------------------------------------------------------------------
Jeff Haverlah           Coastal Texas
     Airspy HF+ Discovery   W6LVP loop  Various web SDRs
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