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Utility Listening - Discussions regarding monitoring government, military, aircraft, ship, and other misc communications in the HF/MW/LF bands.

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  #581 (permalink)  
Old 02-07-2014, 11:23 AM
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Default Red River / 11.175

Red River call sign has been active of late on 11.175. Can anyone verify that this is Barksdale AFB, Louisiana?

For sure, not a guess......
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  #582 (permalink)  
Old 02-12-2014, 10:04 PM
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I once heard a B-52 calling Mud Bug (Barksdale).... it was so loud and clear I assumed they were overhead (L.A.) or over in Arizona practicing on the Barry Goldwater range.
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  #583 (permalink)  
Old 02-13-2014, 5:50 PM
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I am in the center of a NOR 'EASTER , ( Major snow storm with northeast winds ) and got a good hit on 11175. Saying, echo, lima,,,,pretty good. I'm getting all kinds of hits in this storm.
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  #584 (permalink)  
Old 02-14-2014, 8:19 AM
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Default Friday Morning - Data Traffic

Anyone got an idea of what the data traffic is on 11.175 this morning? Been on & off sine 1100 Z, covering standard traffic.
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  #585 (permalink)  
Old 03-07-2014, 1:29 PM
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Got NASA-426 calling mainsail for a radio check a bit ago. Contact was made with offutt. That's a new one for my log book. Time 1921z.
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Old 03-08-2014, 8:29 PM
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About what time do you here 11175 KHz? I'm not sure I will be able to hear them, though I do hear the Cuban numbers station just fine.
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Old 03-09-2014, 12:40 AM
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11175 and 8992 are used 24 hrs a day. Shouldn't be too difficult to hear traffic anywhere in CONUS.
There are quiet and busy periods, just like anything else.
LiveATC has a feed. If you have any question as to receive capability, you could pull up the feed and compare.

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Old 03-09-2014, 3:05 AM
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Okay, thanks!

Are they always in USB?
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Old 03-09-2014, 9:01 AM
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Quote:
Originally Posted by poltergeisty View Post
Okay, thanks!

Are they always in USB?
Yes, always USB. 4724, 6739, 8992, 11175, 13200, 15016 kHz are in use all the time, many times a day. 11175 tends to carry the most traffic once you subtract the encoded voice EAMs and Skykings from all freqs.

T!
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Old 03-09-2014, 10:13 AM
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Might concider adding 11.200 USB as also as picked up several SAM aircraft and possible E-4 doing work via orderwire on both Satcom / Data troubleshooting...etc.. this is not part of the above per se, yet at times of exercises it can be a good freq to have a look at...

Far above post on "Red River" as noted is on-off active and almost pegs the meter on my FT-897 rig here in Dallas area- no idea the location or output power. Also do not know if this specific station is using the Simo feature or a stand-alone system...
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Old 03-09-2014, 6:18 PM
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Quote:
Originally Posted by poltergeisty View Post
About what time do you here 11175 KHz? I'm not sure I will be able to hear them, though I do hear the Cuban numbers station just fine.
Thanks guys! Sorry I didn't get back to you polter but Ive been on my three day work scehdule and such away from my computer. Looks like NASA-426 is a P3-B airbourne science lab. If your interested in listening to military aircraft/utility traffic on HF then 11175 is a good place to start and there are many folks in here like Token who will help answer any questions related to utility monitoring that you might have. Its my favorite part of the radio hobby. Enjoy!

Last edited by N1RGR; 03-09-2014 at 6:25 PM..
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Old 03-09-2014, 6:50 PM
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Quote:
Originally Posted by Token View Post
Yes, always USB. 4724, 6739, 8992, 11175, 13200, 15016 kHz are in use all the time, many times a day. 11175 tends to carry the most traffic once you subtract the encoded voice EAMs and Skykings from all freqs.

T!
Gotcha on the mode,but whats the bandwidth?..
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Old 03-10-2014, 2:13 PM
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Originally Posted by fourthhorseman View Post
Gotcha on the mode,but whats the bandwidth?..
Usually around 3 kHz is OK for these frequencies.
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Old 03-10-2014, 2:26 PM
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Quote:
Originally Posted by MarcelHdt View Post
Usually around 3 kHz is OK for these frequencies.
That was a trick question.

For some SW radios or portables you don't get much choice in the matter; however, if you do have a limited selection then keep reading...

Your bandwidth should depend on your local noise level, signal strength of received signal, adjacent signals, and the modulation of the received signal. Audio quality of your receiver's speaker system can make a difference too.

Most HF-GCS stations sound best at wider bandwidths. I use multiple settings but my primary settings are 3.6 khz and 2.3 khz.

For the aircraft on HF-GCS this will likely depend on your received signal strength. Weaker stations will need a narrow bandwidth and stronger stations can you use a wide bandwidth.

If you ever heard the E-6/E-4B EAM messages then you know there's the background noise coming through the microphone. While you can always listen to a narrow filter it sounds better to use a wider filter.

If you use any kind of DSP noise reduction then you'll want even a larger filter such as 5khz or 6khz with NR enabled.

A noise blanker or noise reduction feature can be handy at times but they also distort the audio quality of the incoming signal. Try not to use these if at all possible.
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Old 03-10-2014, 9:32 PM
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No bandwidth capability on mt DX-394.
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Old 03-11-2014, 4:12 AM
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Just had c/s EVOKE-01 calling for a radio check a bit ago 0856z on 11175. Contact was made with Offutt. Anybody have anything on this c/s? I had them about 5hrs earlier on AR near my location on 341.750 UHF. They were a flight of two at that time EVOKE-01 and 02.
Time 0911z.

Last edited by N1RGR; 03-11-2014 at 5:57 AM..
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Old 03-11-2014, 4:43 AM
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EVOKE-01 still contacting Offutt about every 30mins on 11175kHz with coded four letter one number messages.
TACAMO still sending EAMs on 8992kHz USB. Call sign sounded like RAFTMAN. time 0943z

Last edited by N1RGR; 03-11-2014 at 5:58 AM..
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Old 03-11-2014, 7:43 AM
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Quote:
Originally Posted by nickcarr View Post

Most HF-GCS stations sound best at wider bandwidths. I use multiple settings but my primary settings are 3.6 khz and 2.3 khz.

For the aircraft on HF-GCS this will likely depend on your received signal strength. Weaker stations will need a narrow bandwidth and stronger stations can you use a wide bandwidth.
Excellent!..Im in the city,Been using around 4 to 5.5...theres a great deal of background noise..Using SDR so the BW is a slider,great for the fine tuning..Headphone monitors too..great for focusing my attention to the distant signals.

Thanks for the feedback on the subject..The devils always in the details!.
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Old 03-12-2014, 9:48 AM
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Im getting c/s GOLDEN GLORY calling on 11175. Anybody have anything on this c/s? Sounds like could be a US Navy vessel. Time 1443z
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Old 03-18-2014, 6:38 PM
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Listening to the fourth message in a row - all HF-CGS frequencies - can't say I've ever heard so many in a row...
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