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 permissable in your locale.

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Topics - SV1XV

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Peskies / Russian complaint about Greek Freebanders
« on: October 01, 2017, 1205 UTC »
The Greek regulatory body Hellenic Telecommunications and Posts Commission (EETT) last week sent a circular to all Greek amateur radio societies and clubs dated September 20, 2017. In this circular they state that the Russian Government has complained formally for illegal nets by Greek freebanders on 6625, 6675 and 6685 kHz, affecting air-ground operations.  

The Greek freebanders were tipped well in advance and they now use a new daytime channel, 6705 kHz LSB. When propagation does not favor 6.5 MHz, they switch to frequencies on 3400-3500 kHz, again an international aeronautical communications band. The most regular Greek traffic channel is 3455 kHz LSB, although they tune up and down in this 100 kHz band.

Other / Indian hams track down insurgent clandestine radio nets
« on: August 20, 2017, 0940 UTC »
Indian hams support the Indian security forces and track down insurgent clandestine radio nets in Darjeeling district, West Bengal. From the Times of India.

HF Beacons / GB3ORK JT9
« on: July 23, 2017, 0656 UTC »
The RSGB beacon GR3ORK in the Orkney Islands is back on the air, every 15 minutes. In addition to CW it transmits the message “GB3ORK – 5MHZ” in JT9.

2017-07-19  02:33 UTC    5290.0 kHz  GB3ORK  JT9  "GB3ORK – 5MHZ”
2017-07-19  02:48 UTC    5290.0 kHz  GB3ORK  JT9  “GB3ORK – 5MHZ”
2017-07-19  03:03 UTC    5290.0 kHz  GB3ORK  JT9  “GB3ORK – 5MHZ”

For a few years now, a digital network using ROS mode operates on 27635 kHz. Stations are mainly in Europe and use "Alfa-Tang" style callsings with numerical prefixes. Read more in this article ROS network on 27635 kHz on my blog.

HF Beacons / Letter Beacon in UHF Milsat band
« on: December 06, 2015, 0540 UTC »
Marco I4IBR / I4-20126 discovered a letter beacon "Z" on 268.05 MHz (UHF), which is the downlink of SICRAL 1B satellite for the Italian Navy. He used an AR-3000 with home-made LNA and a 3 element antenna pointing south.

For more information, see the original post (in italian): Letter Beacon in banda UHF Milsat .

HF Beacons / Cluster beacons move out of 40 m ham radio band
« on: May 23, 2015, 1724 UTC »
The cluster of single letter beacons which operated for years near 7039 kHz, recently left the 40 m amateur radio band and moved up to new frequencies. New frequencies are:

7508.7  "D"
7508.9  "S"
7509.0  "C"

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