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Author Topic: 11175 USB  (Read 33634 times)

Offline Josh

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Re: 11175 USB
« Reply #120 on: January 05, 2020, 2212 UTC »
HFGCS has been mighty quiet last few days, just heard the first emission a few minutes ago after several hours of monitoring.

2215Z 05JAN19
Last caller last caller this is RECKLESS RECKLESS how copy?
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Offline MattCawby

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Re: 11175 USB
« Reply #121 on: January 05, 2020, 2329 UTC »
HFGCS has been mighty quiet last few days, just heard the first emission a few minutes ago after several hours of monitoring.

2215Z 05JAN19
Last caller last caller this is RECKLESS RECKLESS how copy?

RECKLESS broadcast a 116 character EAM at 2251z on 11175, good signal on the west coast

Offline Josh

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Re: 11175 USB
« Reply #122 on: January 16, 2020, 1953 UTC »
BEN HOGAN being checked into the net by EXTRADITE
1953Z 16JAN20
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Offline IZS4

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Re: 11175 USB
« Reply #123 on: January 19, 2020, 1441 UTC »
Royal Arc calling Extension for authentication .Alpha Tango Echo, Charlie , Bravo Echo at 144 Zulu
Listening on an Icom-718 with a 135' OCF dipole or a RSP2.  Grundig G3 and MLA-30 when portable. When QRP I use a Hendricks PFR-3 I built. Coverage is 20,30 and 40 meters.

Offline Josh

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Re: 11175 USB
« Reply #124 on: January 19, 2020, 2115 UTC »
PIONEER 08 calling MAINSAIL for pp 2105Z 19JAN20
Andrews requests PIONEER 08 qsy to discrete 09120
Pp traffic ensues on 9120
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Offline Josh

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Re: 11175 USB
« Reply #125 on: January 21, 2020, 2224 UTC »
SPARE RIB with DSN pp via GRAPE VINE for analog and digital mux setup for station FARM BOY, then to PATHOLOGY, then station COOL AIR via RF12 and RF16
2214Z 21JAN20
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Offline IZS4

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Re: 11175 USB
« Reply #126 on: January 22, 2020, 0005 UTC »
Seeing some new call signs here I wasn't familiar with.
Listening on an Icom-718 with a 135' OCF dipole or a RSP2.  Grundig G3 and MLA-30 when portable. When QRP I use a Hendricks PFR-3 I built. Coverage is 20,30 and 40 meters.

Offline Josh

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Re: 11175 USB
« Reply #127 on: January 22, 2020, 0022 UTC »
Calls like SPARE RIB and the like are going to be per-mission or time based, in this case an E6 tacamo flight, where GRAPE VINE is the ground callsign of the station handling HFGCS comms to/from tacamo flights, perhaps Tinker AFB.

FARM BOY, PATHOLOGY, and COOL AIR are per-mission callsigns for the mux GEP, Ground Entry Points where the tacamo has a full duplex mux system in operation; the tacamo flight sends wideband fm uhf mux dowlink on one freq, the uplinked GEP sends on another freq. As the tacamo orbits, it loses contact with one GEP and switches to the other as it comes within range. These calls may never be used again but who knows.
« Last Edit: January 22, 2020, 0025 UTC by Josh »
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Offline Josh

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Re: 11175 USB
« Reply #128 on: January 28, 2020, 2209 UTC »
ASCENSION in MAINSAIL guise responds to PYTHON 09 who is looking for a pp. ASCENSION requests  PYTHON 09 QSY to 13200 for pp. Both QSY to new QRG and called party isn't answering the phone. 2125Z 28JAN20
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Offline IZS4

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Re: 11175 USB
« Reply #129 on: January 29, 2020, 0022 UTC »
I need to start writing down the calls I hear. I always try to check in on 11.175 on a daily basis. The first month or so I thought there were only five calls or so. Now I realize there are so many more. I will try to document better and post my findings.
Listening on an Icom-718 with a 135' OCF dipole or a RSP2.  Grundig G3 and MLA-30 when portable. When QRP I use a Hendricks PFR-3 I built. Coverage is 20,30 and 40 meters.

Offline Token

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Re: 11175 USB
« Reply #130 on: January 29, 2020, 1351 UTC »
I need to start writing down the calls I hear. I always try to check in on 11.175 on a daily basis. The first month or so I thought there were only five calls or so. Now I realize there are so many more. I will try to document better and post my findings.

The rotating tactical callsigns (like the stations that send the EAMs and similar traffic) change every 24 hours and are selected randomly form a list.  This means they can repeat, be used again, but sometimes it takes years to get back around to a specific callsign, others never get reselected.  Other callsigns are permanent and follow the unit or the aircraft, things like SCARRY54, the REACH callsigns, etc.

T!
T!
Mojave Desert, California USA

Offline Josh

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Re: 11175 USB
« Reply #131 on: January 29, 2020, 1816 UTC »
HAY HOOK calling FOOT HILL via pp for analog and digital on RF1 (UHF Mux) with station TECHNICAL (GEP).
1914Z 29JAN20
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Offline Beerus Maximus

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Re: 11175 USB
« Reply #132 on: January 31, 2020, 1609 UTC »
11175 // 8992 has been busy this morning with PAID OFF broadcasting multiple EAMs, and then calling TELL TALE (no response) at 1607 UTC. During the EAM, RTTY data appeared right along side the voice audio on both frequencies.. sounds a lot like it is mixed in with the EAM audio itself from the same transmitter.

Another EAM from PAID off began at 1616 UTC, much stronger on both frequencies, and without the RTTY.
« Last Edit: January 31, 2020, 1617 UTC by Beerus Maximus »
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Offline Josh

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Re: 11175 USB
« Reply #133 on: January 31, 2020, 2307 UTC »
They often have the mixing console set wrong and feed S4481 at times along with EAMs. Also for giggles it was an old (1950s) US Army practice to send voice over fsk, and it worked fine. What I mean is a constant fsk bcast signal was mixed with voice  at the transmitter, the human at the other end just had to put up with the fsk, while the rrty machine ignored the voice traffic and continued to print.
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Offline Ticom

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Re: 11175 USB
« Reply #134 on: February 02, 2020, 2245 UTC »
Hearing EMPHASIS(?) right now.