Δευτέρα, 9 Ιανουαρίου 2017

IARUMS Region 1 (IARU Monitoring System)

IARU Monitoring System

The IARU Monitoring System is a worldwide service authorized by the IARU Administrative Council. It is the obligation of the IARU and its member-societies to defend the interests of the Amateur Services as stated in the IARU Constitution. The IARU Monitoring System is served by many dedicated volunteers who have served effectively for many years. Each of the three IARU regional organizations selects and appoints an IARU MS Regional Coordinator. The IARU Monitoring System operations are coordinated by the Monitoring System Committee (MSC).

One of the primary objectives of the IARU Monitoring System is the identification and initiation of steps leading to the removal from amateur bands of radio signals of non-amateur stations causing harmful interference to the amateur satellite services contrary to International Telecommunications Union and national radio regulations. Typical intruders include shortwave broadcasters, Over the Horizon Radar, CODAR, unlicensed operators on the bands including taxicabs on 10 meters and fishermen on various bands, military RTTY and beacons, fishnet beacons and various types of jamming signals.

Interested parties who want to report intruders on the amateur bands are encouraged to send their observations to the Regional Coordinators and include the following information: your identification (organization-call sign), the frequency, time in UTC, the day, month, any possible identification of the signal, mode, signal strength, direction bearing and any remarks that help describe the signal. In addition, a very beneficial piece of information is a recording of the signal preferably in the form of a wav file that may be e-mailed for quick evaluation.


                                         Info: https://www.iarums-r1.org/

Κυριακή, 6 Νοεμβρίου 2016

New Russian Arctic Over-the-Horizon Radars

New Russian Arctic Over-the-Horizon Radars Set for 2017 Startup

According to media accounts, more long-range, new over-the-horizon (OTH) radars that can identify aerial and sea targets hundreds of miles away are scheduled to begin operation next year in the Russian Arctic. It’s doubtful, however, that the news heralds the return of interference on the level of that generated by the so-called “Russian Woodpecker” OTH radar, which plagued Amateur Radio HF bands in the 1970s and 1980s.

Σάββατο, 15 Οκτωβρίου 2016

SPE Combiner CO1-HF

Up to 5 KW Combiner for two SPE EXPERT 2K-FA or two SPE EXPERT 1.3K-FA Linear Amplifiers

  • Up to 5 KW.
  • This combiner doubles the power of two SPE EXPERT 2K-FA or two SPE EXPERT 1.3K-FA amplifiers, maintaining all the features of each of the amplifiers.
  • The connections are the same as for a single linear amplifier.
  • All the wiring/cables between the CO1-HF combiner and the linear amplifiers are supplied as a standard feature.
  • The power consumption is very low due to power factor correction (PFC).
  • This combiner allows you to increase your amplifier system step-by-step.
  • To provide you with flexibility, you can use each linear amplifier separately (e.g. take the SPE EXPERT 1.3K-FA on a DX’pedition.
  • CE certified.
 More : http://rfsolutions.com.au/ham-radio-products/amplifiers/spe-combiner-co1-hf/#tab_4

Κυριακή, 4 Σεπτεμβρίου 2016

RF pollution from solar panels

Solar installations often give problems when it comes to polluting the airwaves with radio interference. 
Electrical systems such as solar panel installations must comply with EMC (Electro Magnetic Compatibility) standards. That means for example that there is a limit (limit) is what an electrical system, such as the combination solar panel and inverter including cabling, may emit electromagnetic fields (EMF). However, this emission limit is more often than not exceeded. That turned out already in 2014 a study of the EMC Adminstrative Cooperation Working Group in which 14 European countries took part.