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.