FOLLOWERS

Tuesday, January 10, 2017

MONITORING RESEARCH 6 MHZ SPECTRUM

 
To all members and readers!
 
Here in Melbourne, our sunrise and sunset times have started to changed due to later sunrises and earlier sunsets. This altered pattern has resulted in variations in signal fade-in and fade-out timings, particularly on the 6, 7 and 9 MHz bands.
 
Propagation patterns have also changed, due to the continuing low level of Solar Activity, with the daily Equivalent Sunspot Number falling to as low as zero on some days!
 
This is a summary of notable frequency occupancies researched on January 9 2017,  across the time span 1930 to 2000.
 
5860 KUWAIT R. Farda, Persian
5875 PHILS VOA-Tinang Korean
5910 ROMANIA Romanian
5950 ETHIOPIA V. of Tigray Revolute Afar
5965 KUWAIT RFA Chinese
5980 TURKEY Turkish
5985 CHINA CRI-Beijing Portuguese
6020 CHINA CRI-Chijiaz, Albanian
6030 ETHIOPIA R. Oromiya, Addis Ababa, Afar
6040 IRAN English
6060 IRAN Arabic
6090 CHINA CRI-Urumqi Russian
6100 CHINA CRI-Beijing Russian
6110 CHINA CRI-Xian Russian
6120 TURKEY English
6160 CHINA CRI-Xian German
6170 N. KOREA VOK German
 

Saturday, December 31, 2016

Monitoring Research

 
This is a summary of notable 11 MHz frequency occupancies on December 30, 2016, across the 1900 to 1930 time span, here in Melbourne.
 
11615 THAILAND R. Darfur, Udon, Sudanese
11670 INDIA English
11820 S. ARABIA Arabic
11860 S. ARABIA R. Sanna (Yemen) relay, Arabic
11900 UAE VOA-Dhabbaya Tigrinya
11915 S. ARABIA Arabic
11930 S. ARABIA Arabic
12040 THAILAND VOA-Udon Tigrinya
12160 USA WWCR English
 
 
 
 

Wednesday, December 28, 2016

Monitoring Research

 
Solar activity continues to be very low, with the 10.7 Solar Radio Flux having dropped to 74 and the Daily Equivalent Sunspot Number down to 11.
 
These numbers are not expected to change significantly in the immediate future, meaning that long-haul multi-hop propagation on darkness or semi-darkness paths on frequencies above about 13 MHz will continue to be unreliable.
 
Here in Melbourne, there has been good propagation on 7 and 9 MHz in our sunrise period, from Europe, Africa, Asia the ME and the Americas.
 
The summary which follows indicates notable occjupancies in the period 1900 to 1930, on December 27, 2016.
 
7295 CHINA CRI-Kashi English
7365 CHINA CRI-Beijing Portuguese
7375 ROMANIA Romanian
7455 FRANCE R. Denge Kurdistane, Issoudin, Kurdish
 
9275 USA WNLK English
9475 USA WTWW English
9825 ENGLAND R. Darfur via Woofferton, Sudanese
9895 UAE RTI-Dhabbaya French
9980 USA TOM-WWCR English

Thursday, December 22, 2016

World Radio TV Handbook - 2017 edition


 


The 2017 edition is now available, 672 pages, covering LW, MW, FM, SW and TV.
 
The Features section includes articles on Remote Receivers, A Pacific Radio Adventure, The Mighty KBC station, CKZN St John's, the International Radio for Disaster Relief Project, and a reminiscence by Vagn Fentz who collaborated on the WRTH editions of 1948-9. 

There are equipment reviews of the Icom IC-7300, Reuter Elektronik RDR55D, SDRPlay RSP, Wellbrook ALA1530LNP, and Bonito AAS300, as well as other articles, information and maps

 
Other content includes detailed infomation about
 
• National and International broadcasts and broadcasters
• Clandestine and other target broadcasters
• MW and SW frequency listings
• Terrestrial TV by country
• Extensive Reference section

WRTH2017 may be purchased from major international bookshops, or direct from the UK publisher at

http://wrth.com


Price from the Publisher is UK35 pounds, postage included for delivery to the UK. Postage for other countries varies with distance.

Tuesday, December 13, 2016

UNUSUAL HF DAYTIME PROPAGATION INTO MELBOURNE

UNUSUAL HF DAYTIME PROPAGATION INTO MELBOURNE
 
On December 2 2016, there was an excellent opening in the early-afternoon period on 9 and 11 MHz, from Africa the Middle East and Asia, across the time span extending from 0400 to 0500.
 
This propagation pattern becomes apparent in the Melbourne summer, during low-sunspot years, via what is known in the radio industry as "Specialized Complex Modes", in which transmission occurs over daytime paths, due to multiple reflections off the top of the (sporadic) E layer bouncing off the lower region of the F layer, with no intermediate ground bounce. This is marked by very strong signal strength, with very litle fading, on frequencies which do not normally propagate during this window.
 
The phenomenon has been observed by the writer, in Melbourne, since the late 1940s – its appearance is unpredictable, with signals "popping up" out of nowhere, of variable durations ranging from a few seconds to up to an hour, then to vanish just as quickly!
 
The study and analysis of this propagation mode had been a continued target for technical hobbyists over many years, and were well documented in the radio hobby newsletters of the time.
 
These days, there is negligible interest or involvement in coordinated HF technical monitoring in the Melbourne region!
 
The summary which follows was made on December 12, 2016, at a field site in the Warrandyte State Park in the Pound Bend Reserve, in Melbourne's outer east, with the small Eton E5 receiver, and  three metres of random antenna tossed into a bush. The The Yarra River is nearby. An echidna (Spiny Anteater) came out of the bushes to assist!
 
AFRICA 
9460 S. AFRICA BBC-Meyerton English
9885 SAO TOME Kirundi
11825 MADAGASCAR KNLS English
11995 MADAGASCAR BBC-Talata Somali
 
MIDDLE EAST
9700 TURKEY Turkish
9755 IRAN *0420 Hebrew
11730 OMAN BBC *0430 Persian
11860 S. ARABIA RF. Sannaa, Arabic
11875 IRAN Turkish *0425
12035 OMAN BBC English
12095 UAE BBC-Dhabbaya  English
12130 KUWAIT R. Mashaal Pashto
12140 KUWAIT R. Azadi Pashto
 
ASIA
9490 CHINA Xizang PBS Lhasa Tibetan
9595 JAPAN R. Nikkei, Japanese
9635 VIETNAM VOV Domestic Vietnamese
9730 MYANMAR Domestic, Burmese
9760 JAPAN. R. Nikkei, Japanese
9835 MALAYSIA RTM-Kajang Malay
9850 TAIWAN SOH, relay RFA, Chinese
9865 INDIA Hindi
11600 TAIWAN SOH Chinese relay RFA
11665 MALAYSIA RTM-Kajang Malay
11670 INDIA Persian (co-channel CNR2)
11735 N. KOREA KCBS Korean
11780 IRAN Hebrew *0425
11810 CHINA CNR8 Mongolian
11905 CHINA CNR6 Amoy
11950 CHINA Xizang PBS Lhasa Chinese
11980 KAZAKHSTAN  RFA-Dushanbe Chinese
12055 CHINA CNR17 Kazakh
12150 TAIWAN SOH Chinese relay RFA
 
Transmission path from Southern Africa
 
 
Monitoring Site
 
My assistant!
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

Thursday, December 8, 2016

6 and 7 MHZ MONITORING RESEARCH

6 and 7 MHZ MONITORING RESEARCH
 
Solar activity remains very low – 10.7 cm Solar Radio Flux down to 80, Daily Equivalent Sunspot Number fallen to 20.
 
This is a summary of notable frequency occupancies in the Melbourne sunrise period on Dec 7, 2016, across the 1900 to 1930 window.
 
5925 IRAN Albanian
5945 TURKEY German
6005 KOREA REP VOH Korean (over jamming!)
6090 CHINA CRI-Urumqi Romanian
6135 IRAN French
 
7235 ENGLAND IBRA Media, Woofferton, Fulfulde
7305 IRAN Albanian
7325 CHINA CRI-Jinhua Portuguese
7365 CHINA CRI-Beijing Portuguese
7435 CHINA CRI-Xian Hungarian