Bert Modderman Engineer

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Amplifiers
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13cm 12 watt
13cm 40 watt
MRF284 project
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Dish calcs.
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Metalworking
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Yaxis motor
CNC electronics

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Future projects
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These are foto's i get back from customers.

click here for pictures of the watercooling i made for PA3DZL

click here for pictures of the assembly of the RA18H1213G kit by Lars OZ1BXM

click here for pictures of the assembly of the RA18H1213G kit by manuel EA7EE

click here for pictures of the 1kw OK1KIR EME amp

click here for the 1kw G4CCH EME amp work in progress
(sorry for the to much tin on the coupler there which made the magic smoke appear, i learn each day more....)
Howard told me he is seeing 1kw+ with very little power on the 1kw terminator port. great balance!

The 500 watt EME amp from PA3DZL wit circulator.

 


The 500 watt EME amp from the front page.
PA3FXB has put it in a beautiful case with 4 ampere meters for the 4 pair of fets.

 

Custom waterblock i made for PA3DZL for his circulator.
This will be put in the waterloop of his 500 watt 23cm amplifier he bought from me earlier.

 

A customer went allout with this watercooling he made on the 250 watt amplifier.
This one was tuned for atv use and i told him you realy realy need good cooling so he made this piece of art.