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ON4CT Belgium flag Belgium

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Born in may 1958. My profession is engineer in mechanics.
In 1974 started as a SWLwith a Grundig Radio, later a JRC NRD 515. I was then ONL7048.
In 1984 licenced as ON4ADZ, intrested in dx ing cw and ssb , 1992 5BWAZ: the last zone needed was 29 on 7.0 MHz.
Worked all DXCC countries in SSB. Worked all DXCCcountries minus 1 (P5) in CW.

Operating in RTTY since 1999.
RTTY contesting highlights: first EU in the cq/rj ww rtty 2005, first EU in wpx rtty (2004 and 2005), first in WAE RTTY in 2005.

Other contests: IARU HF CHAMPIONSHIP SOAB MIX LP: 2005 8thWorld Wide,2006 6thWW,2007 4thWW, 2008 5th WW

In March2006 new call: ON4CT.

My toys: Yaesu FTdx5000D with 300 Hz roofing filter installed.
Antennas: Cushcraft X7 for 10/15 and 20m bands at 25m, Optibeam rotary dipole for 40/30m band at 27m, Inv V for 80m apex at 23m, 160m: tower loaded with yagi and 2 elevated radials feedpoint at 6m.
For the 12 and 17 m bands, I use the Inv V or X7.
Antennas are switched by a homemade 4 to 1 box, using Siemens VR421 vacuum relays (see picture below).

Previous transceivers: ICOM 740,Kenwood TS850 and a FT1000MP MkV.

2m and 70cm: ALINCO DR570

Rotor:yaesu 2700 sdx mounted on the concrete tower base (pictures below) , replaced the bulb by blue leds (picture below)

General Logging: LOGGER32 with the MMTTY engine, freeware software. Digital-cw and voice keying: homemade interface.
Contest logger: N1MM software (freeware) contesting in ssb, cw and digimodes.

73 DIRK ON4CT (latest update april 2014)

stress analyse of my free standing tower topload with two antennas at 160km/h windspeed , 1 unit = 1kN/cm






6124394 Last modified: 2015-07-16 00:17:20, 2492 bytes

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