Welcome to the home page of Ham Radio Station OP4K    

Primary call ON4JZ
Other callsigns used OO4JZ - OQ4JZ - OR4JZ - OS4JZ - OT4JZ and OT5A (contest team Lier M/M) 

Ex callsigns ON1BZJ - ON4AJZ

Amplifier	Acom 2000A
Antenna's	10/12/15/17/20/40M        18 element Optibeam OB18-6 on top of a 10 story  apartment building @ 50 meters / 164 feet                    * 3 element on 40 meters                    * 4 elements on 20 meters                    * 4 elements on 17 meters                    * 4 elements on 15 meters                    * 4 elements on 12 meters                    * 7 elements on 10 meters      30M        2 element Optibeam OB2-30 on top of a 10 story apartment building @ 53 meters / 174 feet      80M        dipole (inverted V) on top of a 10 story apartment building @ 50 meters / 164 feet (thanks Jim)    160M        A top loaded T was build with DX Wire, vertical space of 26,50m @8m over ground and    with only 1 radial of 37m long (thanks Jim)
Antenna switch	Acom 2000SW
Microphone	Heil PR-781 + boom mount PL2T + shock mount SM-2
Rigs	Yaesu FTDX-5000MP
Switch controller	Acom 2000S

Amplifier	Tono 2M-130G  150 Watts output
Antenna's	2M + 70 cm     G.P. Comet on top of a 10 story apartment building @ 54 meters / 177 feet
Rig	Yaesu FT-8800 (VHF/UHF FM only)

Antenna's	6M     5 el Dxbeam DXM6-5 @ 45 meters / 150 feet     G.P. Comet on top of a 10 story apartment building @ 54 meters / 177 feet
Rig	Yaesu FTDX-5000MP

Computers	Quad core I-7 16 Gb RAM 2 x SSD Samsung 850PRO 256 Gb + 2 x 1 Gb HDD    Quad core I-5 4 Gb RAM 1 Gb HDD (Weather station) runs 24/7
Contest program	N1MM N1MM+
Interface	Microham Micro Keyer III + Microham Station Master
Internet	Broadband via cable (Fibernet) Telenet
Logging program	Ham Radio Deluxe HRD - WSJT-X + JTAlert
Printer	Samsung CLP-775ND
Rotator	Heavy duty double worm (no commercial rotator) for HF beams     Yaesu G2800DXC for 6m
Rotator clamps	Full saddles model ON5OT Marc, manufactured by ON6IQ (thanks Clem)
Weather station	Davis Vantage Pro 2 cabled