DG0OPKs HOMEMADE SSPA WITH 2 x SD2942

my goal for this work:

In April 2010 i decided to built a new SSPA for my EME activities. I decided to use 2 small modules from ITB.
Due to some QRL and other things the project was finished in August 2011. 

So the start of this project was in the time before the new freescale high power transistors.

The amplifier consists of an built in microcontroller for RF-power/SWR measurement and overload protection
and the possiblity to remote control the amplifier.
The SSPA has also an built in power supply for external preamplifier with 24V relay and a built in sequencer.
The receive path is made for the use of a seperate RX Iine without to modify the used transceiver.

The concept of the realized amplifier can be seen here:
DG0OPK_HPA2011_CONCEPT.pdf

more information about the controller, the powerdetector,
  the swr-protection circuit and the lowpass filter
can be found here.

here are some pictures of the realized hard- and software:
maincontroller with LCD-DISPLAY 4x27 symbols


RF-DECK with RF power modules,RF switch,combiners and SWR protection


INSIDE VIEW with powersupplies, LPF, controller


FRONT VIEW OF THE AMPLIFIER


PA debug monitor for serial computer interface


remote control software (under construction)


If you need more information please write me an email