Difference between revisions of "JORN"

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# [http://maps.spench.net/rf/#pos=-22.9713952,134.4499033&zoom=15&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=5793 the Alice Springs transmitter at Harts Range, Northern Territory, with 90 degree coverage (Telstra/Defence Site, HARTS RANGE)]
 
# [http://maps.spench.net/rf/#pos=-22.9713952,134.4499033&zoom=15&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=5793 the Alice Springs transmitter at Harts Range, Northern Territory, with 90 degree coverage (Telstra/Defence Site, HARTS RANGE)]
−
# [http://maps.spench.net/rf/#pos=-23.5211938,133.6755609&zoom=15&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=86427 the Alice Springs receiver at Mount Everard, Northern Territory, with 90 degree coverage (Defence Site, Off Tanami Road, MT EVERARD)] (previous test site just SE of main site)
+
# [http://maps.spench.net/rf/#pos=-23.5211938,133.6755609&zoom=15&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=86427 the Alice Springs receiver at Mount Everard, Northern Territory, with 90 degree coverage (Defence Site, Off Tanami Road, MT EVERARD)] (previous test site just SE of main site, also has high-bandwidth microwave links to Telstra Radio Terminal to the NE)
  
−
== Assignments ==
+
* The ionosondes are:
 +
 
 +
# [http://maps.spench.net/rf/#pos=-28.3044358,122.8367731&zoom=13&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=42579&filter=%5B%7B%22freq%22%3A25000000%2C%22freq_range%22%3A25000000%7D%5D&q=0-50mhz Jindalee Project WA Transmit Site, LAVERTON (LAV)]
 +
# [http://maps.spench.net/rf/#pos=-27.9423639,114.6854833&zoom=18&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=50345&filter=%5B%7B%22freq%22%3A25000000%2C%22freq_range%22%3A25000000%7D%5D&q=0-50mhz Defence Site, Ajana R/T, AJANA (AJA)]
 +
# [http://maps.spench.net/rf/#pos=-24.898748,113.7098139&zoom=17&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=52851&filter=%5B%7B%22freq%22%3A25000000%2C%22freq_range%22%3A25000000%7D%5D&q=0-50mhz Defence Installation, CARNARVON (CAR)]
 +
# [http://maps.spench.net/rf/#pos=-22.2212639,114.090275&zoom=15&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=43855&filter=%5B%7B%22freq%22%3A25000000%2C%22freq_range%22%3A25000000%7D%5D&q=0-50mhz Ionosonde Site, Learmonth Solar Observatory, Minilya-Exmouth Road, LEARMONTH (LEA)] 11.3 MHz, 30K0WXN (modulated by amplitude, angle, pulse), Ionospheric Prediction Service
 +
# [http://maps.spench.net/rf/#pos=-20.4069798,118.5785338&zoom=17&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=31696&filter=%5B%7B%22freq%22%3A25000000%2C%22freq_range%22%3A25000000%7D%5D&q=0-50mhz Defence Installation South Hedland, PORT HEDLAND (SHD)]
 +
# [http://maps.spench.net/rf/#pos=-17.6080427,123.823205&zoom=13&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=66600&filter=%5B%7B%22freq%22%3A25000000%2C%22freq_range%22%3A25000000%7D%5D&q=0-50mhz Curtin RAAF via, DERBY (CUR)]
 +
# [http://maps.spench.net/rf/#pos=-17.4419337,130.8298322&zoom=17&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=24074&filter=%5B%7B%22freq%22%3A25000000%2C%22freq_range%22%3A25000000%7D%5D&q=0-50mhz Telstra Radio Terminal, KALKARINGI (KAL)]
 +
# [http://maps.spench.net/rf/#pos=-13.8507623,136.4264487&zoom=17&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=54285&filter=%5B%7B%22freq%22%3A25000000%2C%22freq_range%22%3A25000000%7D%5D&q=0-50mhz Defence Installation, GROOTE EYLANDT (GRO)]
 +
# [http://maps.spench.net/rf/#pos=-12.6559777,142.0877907&zoom=17&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=55451&filter=%5B%7B%22freq%22%3A25000000%2C%22freq_range%22%3A25000000%7D%5D&q=0-50mhz Scherger RAAF Installation, WEIPA (SCH)]
 +
# [http://maps.spench.net/rf/#pos=-18.0231997,144.8716618&zoom=17&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=57024&filter=%5B%7B%22freq%22%3A25000000%2C%22freq_range%22%3A25000000%7D%5D&q=0-50mhz Defence, Lynd River Site, LYND RIVER (LYN)]
 +
# [http://maps.spench.net/rf/#pos=-23.6573807,144.1477737&zoom=15&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=21325&filter=%5B%7B%22freq%22%3A25000000%2C%22freq_range%22%3A25000000%7D%5D&q=0-50mhz Queensland Jindalee Tx Site, via, LONGREACH (LON)]
 +
# [http://maps.spench.net/rf/#pos=-34.7322764,138.6440427&zoom=16&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=25952&filter=%5B%7B%22freq%22%3A25000000%2C%22freq_range%22%3A25000000%7D%5D&q=0-50mhz Corner of Operations Road & Land Ave DSTO, SALISBURY (Coordination centre)] (a few other DoD HF sites in the vicinity)
 +
 
 +
* Common ionosonde frequencies (MHz): 10.5, 11.3, 21.5
 +
 
 +
[http://maps.spench.net/rf/#pos=-28.839778,133.702416&zoom=5&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&filter=%5B{%22site_desc%22%3A%22Ionospheric%22}%2C{%22client_name%22%3A%22Ionospheric%22}%5D&q=Ionospheric Overview of sites with assignments belonging to Ionospheric Prediction Service]
 +
 
 +
* DSTO ionosondes:
 +
 
 +
# [http://maps.spench.net/rf/#pos=-15.488474,128.1353243&zoom=13&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&filter=%5B%7B%22freq%22%3A25000000%2C%22freq_range%22%3A25000000%7D%5D&q=0-50mhz Wyndham, WA] (no HF matches)
 +
# [http://maps.spench.net/rf/#pos=-17.3160831,123.6505706&zoom=14&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=66547&filter=%5B%7B%22freq%22%3A25000000%2C%22freq_range%22%3A25000000%7D%5D&q=0-50mhz Defence Site, DERBY]
 +
# [http://maps.spench.net/rf/#pos=-12.4419079,130.9596515&zoom=17&type=hybrid&auto_fetch=true&clustering=true&cluster_level=16&site=28451&filter=%5B%7B%22freq%22%3A25000000%2C%22freq_range%22%3A25000000%7D%5D&q=0-50mhz 11 Mile IPS Site, BERRIMAH]
 +
# [http://maps.spench.net/rf/#pos=-17.5506806,133.539682&zoom=15&type=hybrid&auto_fetch=true&clustering=true&cluster_level=16&filter=%5B%7B%22freq%22%3A25000000%2C%22freq_range%22%3A25000000%7D%5D&q=0-50mhz Elliott near Newcastle Waters, NT] (no HF matches)
 +
# [http://maps.spench.net/rf/#pos=-23.7964146,133.7347873&zoom=16&type=hybrid&auto_fetch=true&clustering=true&cluster_level=16&site=5994 Joint Space Defence Research Facility, ALICE SPRINGS] (otherwise known as Pine Gap)
  
−
Common emission designators:
+
* Transponders (many on 20.125 MHz, 10 W, 100KFXN):
  
−
* 100HN0N - Unmodulated sequence of pulses, no modulating signal, no information transmitted
+
# [http://maps.spench.net/rf/#pos=-17.6957147,141.0750269&zoom=16&type=hybrid&auto_fetch=true&clustering=true&cluster_level=16&site=39330 Defence Installation, NORMANTON]
−
* 100KFXN - Frequency modulation
+
# [http://maps.spench.net/rf/#pos=-12.164382,136.7764342&zoom=13&type=hybrid&auto_fetch=true&clustering=true&cluster_level=16&site=54255 Defence Installation, NHULUNBUY]
−
* 30K0P0N
+
# [http://maps.spench.net/rf/#pos=-14.2912545,126.6452112&zoom=16&type=hybrid&auto_fetch=true&clustering=true&cluster_level=16&site=44767 Kalumburu, NT] (no HF matches)
−
* 40K0P0N
+
# [http://maps.spench.net/rf/#pos=-17.8983354,122.2590636&zoom=11&type=hybrid&auto_fetch=true&clustering=true&cluster_level=16&site=49931 Defence Installation, BROOME]
 +
# [http://maps.spench.net/rf/#pos=-10.4406252,105.675143&zoom=12&type=hybrid&auto_fetch=true&clustering=true&cluster_level=16&site=68332 Defence Installation, CHRISTMAS ISLAND]
 +
# [http://maps.spench.net/rf/#pos=-10.5909833,142.2914219&zoom=10&type=hybrid&auto_fetch=true&clustering=true&cluster_level=16&site=55610 Defence Installation, HORN ISLAND]
 +
# [http://maps.spench.net/rf/#pos=-12.4419079,130.9596515&zoom=17&type=hybrid&auto_fetch=true&clustering=true&cluster_level=16&site=28451&filter=%5B%7B%22freq%22%3A25000000%2C%22freq_range%22%3A25000000%7D%5D&q=0-50mhz 11 Mile IPS Site, BERRIMAH]
  
 
== Clients ==
 
== Clients ==
 +
 +
* DoD
  
 
* '''RLM Systems''' has been acquired by Lockheed Martin.
 
* '''RLM Systems''' has been acquired by Lockheed Martin.
−
** Have two assignments at most TX/RX sites in the ~480 MHz range (no link specified).
+
<!--** Have two assignments at most TX/RX sites in the ~480 MHz range (no link specified).
 +
-->
 +
 
 +
== Assignments ==
  
 +
Common emission designators:
 +
 +
* 100HN0N - Unmodulated carrier, no modulating signal, no information transmitted
 +
* 100KFXN - Frequency modulation
 +
* 30K0P0N - Unmodulated sequence of pulses
 +
* 40K0P0N
 +
<!--
 
=== 4.59 MHz ===
 
=== 4.59 MHz ===
  
−
* ~4.59 MHz has been found while listening on HF. As it happens it is a registered assignment for many of the JORN stations:
+
* ~4.59 MHz has been found while listening on HF. As it happens it is a registered assignment for many of the DoD HF stations:
  
−
[[File:JORN_4.591MHz.jpg|800px|center|thumb|The JORN transmission is the strong one. Note the weak 'sweeping' of the spectrum just to the left of it - part of JORN too?]]
+
[[File:JORN_4.591MHz.jpg|800px|center|thumb|The relevant transmission is the strong one. Note the weak 'sweeping' of the spectrum just to the left of it - part of JORN too? This is usually what an ionosonde does.]]
  
 
* The matching assignment is 4.5905 MHz at 10 kW (3 kHz bandwidth)
 
* The matching assignment is 4.5905 MHz at 10 kW (3 kHz bandwidth)
Line 56: Line 96:
 
# [http://maps.spench.net/rf/#pos=-22.332049,114.0513051&zoom=15&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=52649&filter=%5b{%22freq%22%3A4591000}%5d&q=4.591MHz Defence Receiver Site, NORTH WEST CAPE]
 
# [http://maps.spench.net/rf/#pos=-22.332049,114.0513051&zoom=15&type=hybrid&auto_fetch=true&clustering=true&cluster_level=17&site=52649&filter=%5b{%22freq%22%3A4591000}%5d&q=4.591MHz Defence Receiver Site, NORTH WEST CAPE]
 
# [http://maps.spench.net/rf/#pos=-22.7104697,150.6643754&zoom=14&type=hybrid&auto_fetch=false&clustering=true&cluster_level=17&filter=%5b{%22freq%22%3A4591000}%5d&q=4.591MHz Defence Site (RAAF), ROCKHAMPTON (site has wrong position)]
 
# [http://maps.spench.net/rf/#pos=-22.7104697,150.6643754&zoom=14&type=hybrid&auto_fetch=false&clustering=true&cluster_level=17&filter=%5b{%22freq%22%3A4591000}%5d&q=4.591MHz Defence Site (RAAF), ROCKHAMPTON (site has wrong position)]
−
 
+
-->
−
== De-modulation ==
 
−
 
 
−
Some simple signal analysis reveals interesting features:
 
−
 
 
−
[[File:JORN_4.591MHz_DeMod.png|800px]]
 
−
[[File:JORN_4.591MHz_DeMod_Broader.png|800px]]
 
−
[[File:JORN_4.591MHz_FAC.png|800px]]
 
−
 
 
 
{{RF}}
 
{{RF}}

Latest revision as of 17:22, 27 February 2012

General

On RFMap

The sites on the JORN Wikipedia entry can be found on RFMap.

  • The four JORN transmitter and receiver sites are:
  1. the Queensland transmitter at Longreach, Queensland, with 90 degree coverage (Queensland Jindalee Tx Site, via, LONGREACH)
  2. the Queensland receiver at Stonehenge, Queensland, with 90 degree coverage (Queensland Jindalee RX Site, STONEHENGE)
  3. the Western Australian transmitter at Leonora, Western Australia, with 180 degree coverage (Jindalee Project WA Transmit Site, LAVERTON)
  4. the Western Australian receiver at Laverton, Western Australia, with 180 degree coverage (Jindalee Project WA Receive Site, LAVERTON)
  • The research and development transmitter and receiver sites are:
  1. the Alice Springs transmitter at Harts Range, Northern Territory, with 90 degree coverage (Telstra/Defence Site, HARTS RANGE)
  2. the Alice Springs receiver at Mount Everard, Northern Territory, with 90 degree coverage (Defence Site, Off Tanami Road, MT EVERARD) (previous test site just SE of main site, also has high-bandwidth microwave links to Telstra Radio Terminal to the NE)
  • The ionosondes are:
  1. Jindalee Project WA Transmit Site, LAVERTON (LAV)
  2. Defence Site, Ajana R/T, AJANA (AJA)
  3. Defence Installation, CARNARVON (CAR)
  4. Ionosonde Site, Learmonth Solar Observatory, Minilya-Exmouth Road, LEARMONTH (LEA) 11.3 MHz, 30K0WXN (modulated by amplitude, angle, pulse), Ionospheric Prediction Service
  5. Defence Installation South Hedland, PORT HEDLAND (SHD)
  6. Curtin RAAF via, DERBY (CUR)
  7. Telstra Radio Terminal, KALKARINGI (KAL)
  8. Defence Installation, GROOTE EYLANDT (GRO)
  9. Scherger RAAF Installation, WEIPA (SCH)
  10. Defence, Lynd River Site, LYND RIVER (LYN)
  11. Queensland Jindalee Tx Site, via, LONGREACH (LON)
  12. Corner of Operations Road & Land Ave DSTO, SALISBURY (Coordination centre) (a few other DoD HF sites in the vicinity)
  • Common ionosonde frequencies (MHz): 10.5, 11.3, 21.5

Overview of sites with assignments belonging to Ionospheric Prediction Service

  • DSTO ionosondes:
  1. Wyndham, WA (no HF matches)
  2. Defence Site, DERBY
  3. 11 Mile IPS Site, BERRIMAH
  4. Elliott near Newcastle Waters, NT (no HF matches)
  5. Joint Space Defence Research Facility, ALICE SPRINGS (otherwise known as Pine Gap)
  • Transponders (many on 20.125 MHz, 10 W, 100KFXN):
  1. Defence Installation, NORMANTON
  2. Defence Installation, NHULUNBUY
  3. Kalumburu, NT (no HF matches)
  4. Defence Installation, BROOME
  5. Defence Installation, CHRISTMAS ISLAND
  6. Defence Installation, HORN ISLAND
  7. 11 Mile IPS Site, BERRIMAH

Clients

  • DoD
  • RLM Systems has been acquired by Lockheed Martin.

Assignments

Common emission designators:

  • 100HN0N - Unmodulated carrier, no modulating signal, no information transmitted
  • 100KFXN - Frequency modulation
  • 30K0P0N - Unmodulated sequence of pulses
  • 40K0P0N
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