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Dummyloads as Block or with heatsink and controlled fan
The new amateur standard from Saxony....
for power levels 250watts, 500watts, 1000watts, 1200 watts
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Dummyload_komplett
1200W dummyload complete with heat sink and fan









































     viditors since  Juli 2012:


Links234





Dummyload_1kW_200MHz
1000W version








Dummyload_1200W
1200W version

Dummyload_1200W_50dB
version with 50dB port






Dummyload_250W
250W Dummyload-Block


Dummyload_250W
250watts version with heatsink




Dummyload_500W_Vertical
500W Dummyload-block

Dummy_500W_Drauf
version with -50dB out

For development projcts and amateur radio operators exit often the problem how test an amplifier without sending the energy into antenna. For this problem exist an solution, Dummyload systems to absorb the energy and convert it into heat.

We look at the market and saw, all dummyload systems with higher power levels are very expensive. We start the development to find solutions with excellent datas and acceptable prices for private amateurs. The overview below show the current available models in power ranges from 250 - 1200W rf power and frequency ranges up to 2,7GHz..




1.   1kW Dummyload-Block, 50 ohms, 350MHz (450MHz) (for more Info click here)
professionell built Dummyload-Block with 12mm copper plate and two integrated 100Ohm/500watts chip-resistors. Power-loss up to 1000watts, frequency range DC to 350MHz, with compromises up to 450MHz.
SWR up to 200MHz < 1,10; up to 300MHz < 1,3; at 435MHz SWR < 1,5.
For using is an big heat sink required < 0,5K/W, better 0,3K/W.
The unit can fixed with 4x hex screws (Imbus). An second heat sink can adaped at alumina surface on top.
Connector: 50 ohms, N-socket
Option: active cooled heat sink 390 x 200 x 84mm with 200mm fan

                                  Dummyload-Block version 1000W /350MHz:        124,00 €  +  shipping

                                 Option with heat sink with 200mm fan (12V):       120,00€



2.   1200W Dummyload-Block, 50 ohms, 1300MHz (for more Info click here)

professionell built Dummyload-Block with 12mm copper plate and one special resistor unit. Power-loss up to 1200 watts, frequency range DC to 1300MHz,
SWR up to 1300MHz < 1,3.
Option: 50dB port with SMA sockat available.
For using is an big heat sink required < 0,1K/W, better 0,05K/W with fan cooling
The unit can fixed with 4x hex screws (Imbus). An second heat sink can adaped at alumina surface on top.
Connector: 50 ohms, N-socket, Option: 50ohms SMA for measurements.

Option: active cooled heat sink 390 x 200 x 84mm with 200mm fan

                                      Dummyload-Block version 1200W /1300MHz:          165,00 €  +  shipping

                     Dummyload-Block version 1200W /1300MHz, 50dB port:          185,00 €  +  shipping

                                       Option with heat sink with 200mm fan (12V):       120,00€





3.  250W Dummyload-Block, 50 ohms, 2700MHz (for more info click here)
professionell built Dummyload-Block with 8mm copper plate and special 50Ohm / 250Watt chip-resistor. Power-loss up to 250 watts, frequency range DC to 2700MHz
For using is an heat sink required < 1,3K/W, better is 1,0K/W.
The unit can fixed with 2x M5 hex screws (Imbus). An second heat sink can adaped at alumina surface on top. Connector: 50 ohms, N-socket
For Dummyload-block is dditional heatsink required and not include!


                                                              Dummyload-Block 250W /2700MHz:  75,00 €  +  shipping

                      Dummyload with heatsink and temperature controlled 12V fan:   125,00€ + shipping










4. 500watts Dummyload-Block, 50 Ohms, 1500MHz (for more info click here)
Option: -50dB output (SMA) for measurements available
professionell built Dummyload-Block with 8mm copper plate and special 50Ohm / 500watts chip-resistor. Power-loss up to 500watts, frequency range DC to 1,5GHz with or without 50dB test output.
For using is an heat sink required < 0,7K/W, better is 0,6K/W.
The unit can fixed with 2x M5 hex screws (Imbus). An second heat sink can adaped at alumina surface on top. Connector: 50 ohms, N-socket, Option 50ohms SMA for measurements
Additional heat sink is required and not include!


                                                Dummyload-Block 500W /1500MHz:                 115,00 €  +  shipping

                                               Dummyload-Block 500W /1500MHz with 50dB: 135,00 €  +  shipping

                                          Dummyload with heatsink and controlled 12V fan:  190,00 €  +  shipping


Dummy_500W_50dB_back                 Dummyload_500W       
    500W version with -50dB SMA output         or       complete with heatsink and fan