61
Utility / 12120 BFSK 75Bd
« on: October 21, 2019, 2155 UTC »
12120cf BFSK 75Bd 850 Shift
Presumed STANAG 4481 encrypted via KG-84, acf of 0.
Presumed STANAG 4481 encrypted via KG-84, acf of 0.
Shortwave Pirate Radio In North America And Around The World, And Other Signals That Go Bump In The Night
We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations.
Always consult with the appropriate authorities if you have questions concerning what is permissible in your locale.
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62
North American Shortwave Pirate / Re: UNID 6980 AM 2301 UTC 19 Oct 2019
« on: October 19, 2019, 2312 UTC »
I have an am'r on about 6976.7 with program on upper and hispanic peskies on lower @ 2310. All are jba.
63
Peskies / Spanish 6940 USB
« on: October 18, 2019, 2313 UTC »
Om in conversation with unheard station, 2312Z 18OCT19
64
North American Shortwave Pirate / Pee Wee 6955 USB 2306 UTC 18 Oct 2019
« on: October 18, 2019, 2310 UTC »
Was about s7 with a song containing lyrics like you get what you give or summin, now jba. Now sstv 2309.
65
Equipment / Reflections
« on: October 16, 2019, 2229 UTC »
The following url leads to a pdf on antennas and their secrets that you should know. Almost everything one might need to know about hf antennas in this tome.
Its author is a hero of mine from way back, he was in the FCC RID during WW2, and decades later became my antenna elmer without ever knowing about it because he wrote about his findings in QST and other publications for us newb HAMs to profit from.
He taught that nonresonant/reactive antennas can be made workable by canceling out the reactances at any point in the antenna system, and after the match is made the swr is low for the entire circuit. He also pointed out that as only resistances can eat power, no power is lost in a reactive antenna system when matched as the power will just bounce back and forth in the system till it leaves the antenna, just like we want it to. He wasn't dreaming with these declarations, he proved his ideas in practice as he designed some of the first satellite antennas for the US gov.
The unwashed claim a antenna tuner just fools the rig into believing it sees a low swr.
Here's your soap;
http://www.w3pga.org/Antenna%20Books/Reflections%20III.pdf
Bonus;
https://www.qsl.net/w3df/sterling/dfhistory.html
Its author is a hero of mine from way back, he was in the FCC RID during WW2, and decades later became my antenna elmer without ever knowing about it because he wrote about his findings in QST and other publications for us newb HAMs to profit from.
He taught that nonresonant/reactive antennas can be made workable by canceling out the reactances at any point in the antenna system, and after the match is made the swr is low for the entire circuit. He also pointed out that as only resistances can eat power, no power is lost in a reactive antenna system when matched as the power will just bounce back and forth in the system till it leaves the antenna, just like we want it to. He wasn't dreaming with these declarations, he proved his ideas in practice as he designed some of the first satellite antennas for the US gov.
The unwashed claim a antenna tuner just fools the rig into believing it sees a low swr.
Here's your soap;
http://www.w3pga.org/Antenna%20Books/Reflections%20III.pdf
Bonus;
https://www.qsl.net/w3df/sterling/dfhistory.html
66
Shortwave Broadcast / 5850 AM Radio Slovakia International
« on: October 07, 2019, 2030 UTC »
5850 AM Radio Slovakia International 0152Z
program discussing mid 80s built radio studio still in use by bcast authority.
program discussing mid 80s built radio studio still in use by bcast authority.
67
Clandestine Stations / 11170 AM 0028Z 02OCT19
« on: October 01, 2019, 2332 UTC »
Yl in Chinese into om @ 0030Z, dunno if CNR1 jamming effort or Sound of Hope.
Quick fading, s6/7 level in the clear.
Quick fading, s6/7 level in the clear.
68
Utility / HF TOP 100
« on: September 27, 2019, 2237 UTC »
For decades these have been the first memories input in most any hf rig that finds its way here;
All USB
05211 FEMA Nite Pri
10493 FEMA Day Pri
05696 USCG Night Pri
08983 USCG Day Pri
06761 USAF et al party line
04724 HFGCS
06739 HFGCS Night Pri?
08992 HFGCS
11175 HFGCS Day Pri
13200 HFGCS
15016 HFGCS
05745 SESEF Norfolk
07535 SESEF
10711 SESEF
14385 SESEF
04372 USN TACAMO
06697 USN TACAMO
08776 USN TACAMO
11244 USN TACAMO
13155 USN TACAMO
09007 TRENTON MILITARY
11232 TRENTON MILITARY
13257 TRENTON MILITARY
Then add the WWV channels, the center of every HFBC band, and the center of the AMBC band to facilitate faster tuning when checking the respective bands. Feel free to share yours.
All USB
05211 FEMA Nite Pri
10493 FEMA Day Pri
05696 USCG Night Pri
08983 USCG Day Pri
06761 USAF et al party line
04724 HFGCS
06739 HFGCS Night Pri?
08992 HFGCS
11175 HFGCS Day Pri
13200 HFGCS
15016 HFGCS
05745 SESEF Norfolk
07535 SESEF
10711 SESEF
14385 SESEF
04372 USN TACAMO
06697 USN TACAMO
08776 USN TACAMO
11244 USN TACAMO
13155 USN TACAMO
09007 TRENTON MILITARY
11232 TRENTON MILITARY
13257 TRENTON MILITARY
Then add the WWV channels, the center of every HFBC band, and the center of the AMBC band to facilitate faster tuning when checking the respective bands. Feel free to share yours.
69
Equipment / PSA: On Ferrites and their Brittleness
« on: September 27, 2019, 2219 UTC »
A ferrite is a brittle thing, no give at all.
Unforgiving yet uncomplaining.
Knocked a ac surge arrestor off the desk like I was a cat or summin and ofc it dropped precisely atop a ferrite core that formerly enclosed a coax cable to reduce rfi. Shattered into a million shards. Spose some use can be made of it somehow.
Take care of your ferrites, for they are very sensitive.
Unforgiving yet uncomplaining.
Knocked a ac surge arrestor off the desk like I was a cat or summin and ofc it dropped precisely atop a ferrite core that formerly enclosed a coax cable to reduce rfi. Shattered into a million shards. Spose some use can be made of it somehow.
Take care of your ferrites, for they are very sensitive.
70
Normally, NYC (Riverhead) isn't on 8912 till much later in the day. Spose this level of activity is due the propagation of late, with lower freqs being favoured over 11387, their usual strong sig hangout.
----------------------------------------------------------[24/09/2019 17:47]
HACARS mode: 2 Aircraft reg: .F-HPJJ
Message label: A9 Block id: M [Uplink]
Message content:-
. TWY L AND TWY
M CLSD EAST OF TWY L16.
TWY L CLSD BTWN TWY L14
AND TWY L16. LIGHTED
CRANE 1230 FT AGL 1.13
FT W OF RWY, 26L. NEXRAD
OTS. LAHSO IN EFCT.
OPERATE TRANSPONDER WITH
MODE C ON ALL RAMPS,
TWYS AND RWY
----------------------------------------------------------[24/09/2019 17:47]
HACARS mode: 2 Aircraft reg: .F-HPJJ
Message label: A9 Block id: M [Uplink]
Message content:-
. TWY L AND TWY
M CLSD EAST OF TWY L16.
TWY L CLSD BTWN TWY L14
AND TWY L16. LIGHTED
CRANE 1230 FT AGL 1.13
FT W OF RWY, 26L. NEXRAD
OTS. LAHSO IN EFCT.
OPERATE TRANSPONDER WITH
MODE C ON ALL RAMPS,
TWYS AND RWY
71
Shortwave Broadcast / NHK 6105 0305Z 17SEP19
« on: September 17, 2019, 1809 UTC »
NHK 6105 0305Z 17SEP19
Om in Japanese news
Om in Japanese news
72
Shortwave Broadcast / Unid 4961 USB
« on: September 17, 2019, 1807 UTC »
Unid 4961 USB, Tempted by Squeeze, 0300Z 17SEP19 and off
73
Shortwave Broadcast / RRI 6040
« on: September 17, 2019, 1805 UTC »
Radio Romania International, om talking about basic income levels per household, into annual chamber music festival in Bucharestii, in English
6040 0312 17SEP19
6040 0312 17SEP19
74
Propagation / Propagashuns
« on: September 09, 2019, 2140 UTC »
Yep.
Anyway, anyone ever notice a slight reduction in overall sig strength on hf at local midday? My theory is with the sun being right overhead, the d layer absorption is greatest and it partially eats hf sigs, not just ambc. Starts sometime around noon or shortly after, till after 1pm or so. Could just be guys went to lunch or something.
Needs a sporty name like Brief Meridian HF Absorption.
Or mebbe Solar Zenith HF Perturbation Period.
Anyway, anyone ever notice a slight reduction in overall sig strength on hf at local midday? My theory is with the sun being right overhead, the d layer absorption is greatest and it partially eats hf sigs, not just ambc. Starts sometime around noon or shortly after, till after 1pm or so. Could just be guys went to lunch or something.
Needs a sporty name like Brief Meridian HF Absorption.
Or mebbe Solar Zenith HF Perturbation Period.
75
VHF/UHF Logs, including satellites and radiosondes / L band monitoring
« on: September 06, 2019, 1732 UTC »
Hacking Iridium Satellites With Iridium Toolkit
Over on YouTube TechMinds has uploaded a video showing how to use the Iridium Toolkit software to receive data and audio from Iridium satellites with an Airspy. Iridium is a global satellite service that provides various services such as global paging, satellite phones, tracking and fleet management services, as well as services for emergency, aircraft, maritime and covert operations too. It consists of multiple low earth orbit satellites where there is at least one visible in the sky at any point in time, at most locations on the Earth.
https://www.rtl-sdr.com/hacking-iridium-satellites-with-iridium-toolkit/
Over on YouTube TechMinds has uploaded a video showing how to use the Iridium Toolkit software to receive data and audio from Iridium satellites with an Airspy. Iridium is a global satellite service that provides various services such as global paging, satellite phones, tracking and fleet management services, as well as services for emergency, aircraft, maritime and covert operations too. It consists of multiple low earth orbit satellites where there is at least one visible in the sky at any point in time, at most locations on the Earth.
https://www.rtl-sdr.com/hacking-iridium-satellites-with-iridium-toolkit/
