Modern and innovative water cooled LDMOS KW Amplifiers for DIY

Are you a radio amateur looking for high-quality assemblies and components to build a modern and innovative transistor power amplifier?

Then I am delighted to welcome you here!

DP-AMP has been in existence since 2008 and is therefore one of the most experienced companies in the field of DIY power amplifiers. All assemblies are developed in-house, with great emphasis placed on quality and high-quality workmanship.

Excellent documentation and comprehensible measurements guarantee successful DIY construction.

Our free support will answer your questions in English, quickly and easily.

Experience comes from doing, and that takes time.
Time that many providers are unwilling to invest, which is why they often just copy without having any experience themselves.

With my roots in research and development in RF technology, I am happy to share my knowledge.

Lectures such as those at the Amateur Radio Conference at the Technical University of Munich, publications in CQ DL, and even first place at the UKW Conference, as well as many well-attended local associations, are all part of sharing information.

It is always a pleasure for me to be able to show my developments and inspire radio amateurs worldwide.

DIY has become more extensive, and the demands are getting higher and higher.
I'll show you how to achieve your goals as a professional DIYer with well-designed, replica-proof assemblies.

Thanks to the well-thought-out concepts, DIY is also suitable for beginners.

Innovation does not mean imitating and copying, but taking action yourself.

Most LDMOS fail due to overheating.
So it's time to significantly improve the cooling concept.
The self-developed water cooling system brings the LDMOS very close to the coolant with only one transition to the copper plate. Of course, the new water-cooled copper plate is polished to a high gloss for perfect heat transfer from the LDMOS to the copper.

Below the LDMOS, cooling fins provide a large surface area and thus optimal heat transfer to the coolant. Naturally, emphasis was placed on uniform circulation and flow to avoid heat pockets.

In addition to protecting the LDMOS against ALC voltage spikes and overvoltage at the gates, TVS diodes, fast switching diodes, and Zener diodes have been used. This is a level of protection that hardly any other supplier offers.

The risk of transmitting into a mismatched or defective antenna has been minimized by fully automatic active SWR measurement at every band and antenna change.

The temperature is, of course, measured digitally right next to the LDMOS, where it matters to us.

Other suppliers deliberately measure further away from the LDMOS, where it is always nice and cool. Marketing?!

Being able to use a soldering iron is one thing, but being able to produce clean mechanics is quite another.

If you want a suitable housing, you quickly reach your limits. There are simply no suitable housings with a display cutout and all the ventilation slots and connections.

That has now changed!
An attractive design, 3mm black anodized aluminum, and all elements such as lettering are laser-cut. Everything is pre-drilled and threaded. Just screw it together—it couldn't be easier!

Welcome!

Experience

Innovation

Water cooling

Protection

Mechanics made simple

Mechanics

Do it yourself!

Do it yourself can be easy!