Messages

3631

VHF/UHF Logs, including satellites and radiosondes / Re: UHF mil air

« on: July 03, 2017, 2205 UTC »

"I use a 2 step process to listen to WBFM. First I record the RF signal in FM mode with a bandwidth of at least 120 KHz. I then play that audio file back to tune the sub channels. The audio signal from the E-6 is about 60 Khz wide and the sub channels are spaced 8 Khz appart both USB and LSB. The first video shows the second step. Here we have the E-6 Absentee making the initial contact with the Network coordinator (Gass House). This is done on the sub channel orderwire bravo at 8 KHz LSB. Orderwire alpha is at 0 KHz and orderewire Charlie is at 8 KHz USB. Absentee passes the "flight plan" that lets the Network coordinator know what GEP stations Absentee is going to be using. In this case it's stations Ant House and possibly Affluence. Absentee also passes a mission #. This is the only routine traffic that I hear out on the West coast other than terminating the link at the end of a flight. I do catch a phone call ocassionaly and one is made here on 56 KHz USB. It is a DSN call where Absentee informs someone the are executing exercise GSRV.

https://drive.google.com/file/d/0B52...hmdGFVOWc/view

I rarely get a good signal from the Beale GEP. Here are the better catches.

https://drive.google.com/file/d/0B52...YxV3RQSEE/view

https://drive.google.com/file/d/0B52...VWQUFCSGM/view

STRATCOM GOC can be heard a few times switching to secure comms in this one
https://drive.google.com/file/d/0B52...dEci1tdm8/view

Here is another where I do my best to show the steps I use including a necessary change in the SDR# config file to get the necessary bandwidth in NFM mode. WFM mode will not work. It filters the audio whether the Filter audio box is checked or not.

https://drive.google.com/file/d/0B52...VSZm9uZkE/view

Paul"
https://forums.radioreference.com/military-monitoring-forum/355391-338-9625-a.html#post2785837



The vids linked in the url above describe demodulating the mux stream.

3632

VHF/UHF Logs, including satellites and radiosondes / Re: UHF mil air

« on: July 03, 2017, 1913 UTC »

Northstar C3 Wideband Multiplexed System:
The system onboard the E-6B TACAMO, Air Force 1, The E4B NAOC and other aircraft that provides connectivity into the Northstar network via Ground Entry Points (GEP) is the UHF frequency division multiplexed (FDM) command, control, and communications (C3) system. Both commercial and military networks can be accessed. The onboard components consist of three UHF AN/ARC-171-1H transceivers, five UHF antennas, three MD-1172 modems, three multiplexers, and associated hardware. Currently, the equipment provides three of any combination of the following four services:
- UHF FDM (up to three full-duplex groups of up to15 channels each)
- Airborne Launch Control System (ALCS) data links
- Conventional UHF AM line-of-sight (LOS) (up to three half-duplex channels)
- UHF SATCOM phase shift keying (PSK) receive-only channel (TACAMO broadcast)
A UHF LOS air-to-ground configuration is used in conjunction with the ALCS for communications to intercontinental ballistic missiles. In peacetime, the ALCS is used only during exercises in certain geographic regions within LOS of missile silos. The 75 baud UHF SATCOM data (TACAMO broadcast) is simultaneously broadcast on HF and can be received via that medium. Therefore, much of the time, the third ARC-171 is available for other missions or functions. Nominally, at 25,000 feet, connectivity is provided at an aircraft distance of up to 180 nmi from a GEP. GEP stations are usually located at elevated sites for maximum unobstructed view. Towers are used to elevate antennas in flat areas. Separate transmit and receive omnidirectional antennas are used. All sites are terrestrially connected via AT&T T-1 lines.
The current Air-to-GEP interface is a full duplex UHF FDM link that provides up to 1000 Watts of power and 12 full duplex voice channels per FDM group. GEP sites have at least two radios and two compatible multiplexers. The channels are frequency multiplexed into a 60 kHz baseband group consisting of twelve 3 kHz full duplex voice channels and three orderwire channels plus guard bands and then frequency modulated for transmission on a UHF channel.
Principal sites at Waldorf, MD, Omaha, NE and Lamar, CO are connected via multiple T-1 lines. The primary ground control site for the entire network is the Special Government Operations Center (SGOC) at Waldorf, MD. The secondary ground control site is at Offutt AFB, NE

Courtesy of this pdf, wich is chock full of mil air goodness;
http://www.carmachicago.com/profiles/Milair.pdf

3633

Bacon, BBQ, Beef, And More / Re: Food consumption and the actual statistics of cardiovascular diseases

« on: July 02, 2017, 1805 UTC »

They should look into low cholesterol diets and alsheimers.

3634

Huh? / Re: Dogs to be used in this years Earhart Expedition.

« on: July 01, 2017, 1735 UTC »

I think it was Wayne Green who stated in his legendary publication that Emelia and Fred were on a spy mission for FDR and were forced down by the Japanese.

3635

Shortwave Broadcast / Re: Sideband Preacher Babble 15555 kHz USB WJHR Shortwave 15.555 MHz USB

« on: July 01, 2017, 1723 UTC »

It might come down to money, ssb may be cheaper to run than am at that station, but I don't suppose many 3rd worlders have a product detector. So in that light, maybe he's trying to reach more advanced and wealthy heathen?

3636

North American Shortwave Pirate / Re: Fart Knocker Radio International 6945 AM 0046 UTC July 1, 2017

« on: July 01, 2017, 1716 UTC »

I thank you on behalf of The Handsome Al Fansome for including Belinda Carlisle in your playlist.

3637

VHF/UHF Logs, including satellites and radiosondes / Re: UHF mil air

« on: July 01, 2017, 1708 UTC »

Neacp/tacamo/glass flight burning mux on 337.3MHz 1630Z 01Jul17.

3638

VHF/UHF Logs, including satellites and radiosondes / Re: UHF mil air

« on: June 29, 2017, 0046 UTC »

Neacp/tacamo/glass flight burning mux on 337.3MHz 0030Z 29Jun17.

3639

Huh? / Re: A certain old dx'er chided me a while back with, "When was the last time...

« on: June 28, 2017, 1446 UTC »

deer pirats, pleas pley moar shocka kong k thx
https://www.youtube.com/watch?v=hX9E44mClKs


und dieser serh shon
https://www.youtube.com/watch?v=RPmL-_haRac

slugs!
https://www.youtube.com/watch?v=r8w6eCogCvc

3640

Other / Re: fishermen ????

« on: June 28, 2017, 1425 UTC »

Apparently isis supporters in Indonesia are supporting jihad in the Phillipines, perhaps some clandestine isis comms are being carried on.

3641

European Pirates and Private Stations / Re: Pirate Radio War

« on: June 27, 2017, 1712 UTC »

Nyet idea, however havings of rascal and monopoly on Mr Microphone importation is possible make him oligarch of oblast.

3642

General Radio Discussion / Re: Anyone out there with experience using a BHI Noise Cancelling speaker?

« on: June 27, 2017, 0349 UTC »

I dunno, Ozzy seems to be doing pretty good for a guy who has actually been dead.

3643

VHF/UHF Logs, including satellites and radiosondes / Re: UHF mil air

« on: June 27, 2017, 0344 UTC »

Neacp/tacamo/glass flight burning mux on 325.4MHz 0330Z 27Jun17.

3644

10/11 meters / Re: Does your area still have CB "home channels" or "town channels"?

« on: June 26, 2017, 1904 UTC »

In northwest Omaha the channel was 2, at least when I was playing cb, however there was a ghetto channel for the east side and downtownies.

3645

Huh? / Re: A certain old dx'er chided me a while back with, "When was the last time...

« on: June 26, 2017, 1759 UTC »

Seriously.
Archies?
RATM?
Eminenema?



















What has piracy become.