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

Home     My QTH     Optibeam OB18-6     My QSL Cards     Received QSL     Equipment     Contest

Local time at OP4K     Log statistics     Log search     Weather at OP4K     Weather data live     WX Weatherlink     Postage fee

Many pictures here below (click to enlarge), scroll down for the different stages

 OB17-4 Installed Sept 18, 2004



The delivery of the new aluminum tower
12m / 40 ft tower

Unloaded and ready to go up

The crane (a 50 ton) gets ready


And the tower is raised to its destination

DF2BO, Tom and ON7UN, Eddy waiting

And here comes the OB17-4

Securing the boom to mast plate


This is what turns my antennas

One of the six anchor points


A closer look at the Kevlar guy wire

I want to thank everybody (ON4ALT, Tony - Tony's father -
ON6MR, Robert - ON7UN, Eddy, ON4AMI (OO7P), Pat -
ON4JW (OR4U), Jean - ON5UM (OP5T), Jim - ON4CIW (ON4DHL), Gilbert - ON1DTG (ON4LV), Werner (SK)- DF2BO, Tom and his wife Diana) who helped with assembling and installing this antenna and the new tower


Transforming the OB17-4 into an OB18-6 and assembling the OB2-30 Aug 18, 2007

ON6MR, Robert detaching the boom to mast

The crane in action

The OB17-4 detached

Ready to be transformed

Tower with only VHF / UHF antenna

The aluminum top tube goes out

NEVER use an aluminum top tube (too soft)

The clamp carvings almost cut the tube in 2

This is the OB18-6 after the transformation

Another picture of this new antenna

ON5UM (OP5T), Jim assembling the OB2-30

Assembled without the boom to mast plate

ON5OT, Marc special clamps

These are full saddles and not zigzags

I want to thank ON4ALT, Tony - Tony's father - ON4LV, Werner (SK)  ON5UM, Jim - ON6MR, Robert who helped with this huge antenna project.
The special clamps have been  manufactured by ON6IQ, Clem and are designed by ON5OT, Marc

OB18-6 Installing Sep 01, 2007

The crane (a 70 ton) gets ready

View from the roof

The OB2-30 and vertical for 2m/70cm

Flying in the air

Slowly getting into its place

Arrived at the destination

And lift up of the OB18-6

The antenna swinging

Antenna ready to be fixed to the top tube

ON4AMI (OO7P), Pat waiving

ON6MR, Robert fixing the boom truss

ON6MR, Robert left and ON4AMI (OO7P), Pat right

Both antenna's aligned

ON6MR, Robert adding the torsion bar

And here is the final result

The 70 ton crane finished his job...well done

I want to thank everybody (ON4ALT, Tony - Tony's father -
ON4AMI (OO7P), Pat  ON4LV, Werner (SK) - ON5UM (OP5T), Jim - ON6MR, Robert - ON7UN, Eddy who helped finalizing my antenna project


Flag Counter


Ziegelshiffer Joe OP4K 2019 - Last update April 11, 2019