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1973 | My first ARDF beginnings
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1977 | I made my first DC direction finding receiver for 3,5 MHz – it really worked!
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1979 | ARDF receiver with memory for 6 frequencies (in that days ARDF transmitters operated at different frequencies)
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1981 | Ancestor of the SUPERFOX receivers – superheterodyne with 8 MHz crystal IF filter
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1982 | In order to be able to make some ARDF trainings, I built 0,5W 144 MHz transmitter with automatic timing and universal timing unit for MINIFOX transmitters
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1985 | First prototype of the successful ARDF receiver 144 MHz – COMPACT 144. It immediately overrun all receivers currently used. Within following years, I made several receivers with excellent parameters for top competitors
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1991 | The Specialized Electronic Equipment established. Its first product was CMOS timing unit for ARDF transmitters, replacing TTL units then used
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1992 | Production of the direction finding receiver COMPACT144 and automatic ARDF transmitter COMPACT TX
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1993 | The RADIOSPORT company was established to provide technical support of outdoor competitions and technical sports equipment production
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1993 | Transmitters COMPACT TX successfully used at European ARDF Championship in CZE, Milovy
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1994 | Production of the direction finding receivers SUPERFOX 3,5 and COMPACT3,5
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1994 | Competitors equipped with COMPACT144 and SUPERFOX 3,5 receivers gained first World Champion titlesZávodníci s prijímaci COMPACT144 a SUPERFOX3,5 získávají první tituly Mistru sveta
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1997 | Production of the automatic transmitter COMPACT96 – successfully used at World ARDF Championship 1997 in Germany
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1997 | RADIOSPORT won the competition of the Czech ARDF Association and starts ARDF equipment production
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1999 | Production of the miniature HF transmitter MICROFOX and RC model finder COMPACT M
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2000 | New middle-class HF/VHF transmitter TRAINER used at the first Czech Park ARDF Championships
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2001 | RADIOSPORT ends the ARDF equipment production and the Specialized Electronic Equipment takes the whole area again. The RADIOSPORT logo changes to OK2BWN Radio Sports Equipment
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2002 | Production of the first automatic PLL synthesized ARDF transmitter CONTEST2002, miniature HF/VHF transmitter MICROFOX2 and the new HF direction finding receiver SUPERFOX2002
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2003 | New middle class PLL synthesized transmitter TRAINER PLL
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2004 | Automatic monitoring receiver MONITOR 2004 and CONTEST 2002 transmitters successfully used at World ARDF Championship
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2005 | All equipment reconstructed to SMD technology and modern component base. New products: HF receiver SUPERFOX3,5GX, SportIdent radio data link system
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2006 | New transmitters MICROFOX HF and MICROFOX VHF replace all older MICROFOX transmitters
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2007 | New transmitters TRAINER2007 and CONTEST2007 replace all older TRAINER and CONTEST transmitters. CONTEST2007 has a built-in automatic antenna tuner
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2009 | New VHF receiver SUPERFOX145E. In addition, the company enters the area of animal tracking equipment (automated animal tracking system BAARA and advanced programmable radio tags BIOTX).
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2010 | New electronic compass unit FINDER09 for SUPERFOX receivers. New advanced accumulator tester T810 replaces the old T10.
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2011 | The company was selected as the official technical supporter of the 2011 European/IARU R1 ARDF Championship and successfully managed the job. A programming device and software PGMCONTEST for programming and synchronizing CONTEST2007 transmitters was developed.
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2012 | The company was selected as the official technical supporter of the 2012 ARDF World Championship. New automatic monitoring receiver MONITOR2012. New redesign of the MICROFOX and TRAINER transmitters bring better performance and wider options.
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2013 | New VHF receiver SUPERFOX145DX with digital tuning and memories.
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2014 | New automatic monitoring receiver MONITOR2014.
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