Photogallery

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Preparation and installation of the new 2500 kg heavy tower.

(21 MAY 2003)

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My special thanks goes to ON5UM (Jim) for helping me getting the tower from the Belgium army.


Bringing in the concreet with truck (8M³).	Luc,ON4IA, is the right man for this kind of job, he is a self employed building constructor.	The finishing touch is done by Cliff,ON4AGG.	Did bring the tower to my qrl with heavy truck. Technical instituut (TISM)

My last years students helping bringing in the first section of the tower (500kg).	In the school's workshop we welded MIG-MAG the UPN 80 (rail system for the elevator) to the differents section.	Myself (ON4AEK) doiing some inspections.	9 long and heavy (Ø27mm) ancers were used.

And again some inspection to do.	Detail of one of the wheels of the elavator.	Detail of the teflon turning wheel in top of tower.	Detail of the elevatorwheel with closed bearings.

All put in a special coating (tnx PA7A for special offer).	The whole tower was painted 3 times after galvanising.	Waiting in my backyard to put up.	Looking into section 3.

Concreet with ancers	Detail of one of the ancers.	Detail of a ncer and towerbase.	Students did a good job, all came on place well.

View the sky in the background,lucky whe could keep it dry!	ON4IA and myself making it ready to lift up by 26.000 kg heavy crane.	All went very good so far.	Almost erected the first two sections.

All went into the right place first time.	Matthys (swl) climing the first two section to unlose the crane.	Preparing the next two section to go up.	Anton (ON6NL) climing the tower to do the hard work.

Safety comes first with this kind of work, so helmets and safety bells are a must !	All going well.	Fastening the bolts.	Looks nice so far.

Matthys and ON6NL drinking after the hard tower work.	Looking into the west from the top of the tower.	A view into the north from the top.	Looking down, searching for people.

Preparing and installation of the new 4 element fullsize 40M.

Begin July 2003.


40 m yagi waiting for assembling.	Nothing more than a lot of alumium tubes.	A lot of the preparing was done at the schools workshop.	The first 7 meters were TIG welded, the first tube Ø is 76 mm , the ends Ø 15 mm.

On this picture you can see how the first tubes Ø 76 mm is welded to the 10 mm thick boom plate (750 mm x 170 x 10 mm).	Here you can see how the boomplate is mounted on the square boom.	This pictures shows how the boom is mounted on the rotortube.	This is how it looks like before installation.

You can see how the differents section are TIG welded.	Have a closer look here.	Detail of how the boom is mounted together.	Standing on the boom jus tfor fun.

A closer look at the omegamatch i use.	Inside the pvc tube two adjustabel condeser are used, the photo was taken in the try out - fase.	Myself (ON4AEK) sitting on the boom just for fun.	Ofcourse i do this when the antennes are at ground level.

5 element long john for 20 M on top of 40 M yagi.	Side of the tower with the railsystem.	Looks great !	or not ?

Look at the gamma rod for the 160 M antenne.	Feedpoint of the 160 M antenne (tower).	20 m yagi is at 29 m .	40 m yagi is at 25 m.

A closer look at the 160 m feedpoint.	Once i did know the value of the condeser used in the gamma match i replaced it ,made of coax.	The different towersection were made to be sure electric mounted.	All feedlines burried under the surface.

Preparing and installation of the elevator on tower,rotor for antennen.

July 2003


Installing the winch,made complete in stainless steel.	The winch is driven by a 380 v motor (0,37 kw 1380 rpm, ratio 1/300) Calculated upto 600 kg.	Nice piece of art!	Controlbox for winch.

Elevator mounted in UPN 80 .	Side of the tower with the railsystem,doiing the first test.	Looks great ! but it took me some time..... hi!	or not ?

Rotor for antennes (ratio 1/40 + 1/49 = 1/1960 , motor = 0,18 kw 1380 rpm) in stainless steel.	Top tube in steel (ø 70 MM) with the plates (10 mm thick) for the yagis .	The aluminum box that houses the potentiometer for degrees read out.	Mounted under the elevator.

Top of the elevator housing the bearing for the rotortube.	Elavatorwheel in UPN 80.	Detail of how the 20 m beam is mounted to the rotortube.	Myself (ON4AEK) enjoying the nice summer wx,after the hard work !