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Power Amplifier

Power Amplifier


The efficiency-optimized power amplifier for the 2m band


The Blueline ECO750 of SSB-Electronic is the only power amplifier in the amateur sector, which is based on the Doherty principle and thereby has a more than 20% higher efficiency, with medium controls (SSB), as a classic linear amplifier stages.


The latest generation of components and a highly efficient circuit design are leading to considerably lower power consumption and significantly less emission of heat



In addition to the efficiency in the power section also great emphasis was placed on the operation and extensive automation of switching and protection functions. An internal flow control and remote power supply for the antenna preamplifier are naturally present.
On classical mechanical controls was largely dispensed with. The high-contrast and bright touch screen allows the flexible display of operating parameters and their settings, such as:
  • Input and Output
  • Reflection
  • Voltage
  • Power


as well as protective functions such as too high input power, over voltage, under voltage and temperature are continuously measured and displayed. A station clock is also available.




Due to the compact and robust construction and the use of selected and very efficient LDMOS semiconductors, the amplifier is extremely recommended for the mobile and stationary continuous use.
The operation is possible at an ambient temperature of 0 ° C to 40 ° C. In the field or in the contest, the power-optimized circuit design shows its particular strengths. Put your resources economically and meaningful! The high efficiency provides little heat, this allows the compact dimensions and reduced weight. Therefore the Blueline ECO750 is a reliable companion on your DX expedition.
The Blueline ECO750 operates with 48V supply voltage. On the integration of a power supply was deliberately omitted, because in many places there is an adequate supply.
Naturally SSB-Electronic offers a matching power supply as asaccessories. This voltage supply has been tested on lowest harmonic emission and stability and provides safe operating parameters even in border areas.




The benefits of the Blueline ECO750 at a glance:


  • robust, solid workmanship
  • excellent linearity
  • compact design
  • low weight
  • high overall efficiency
  • protection circuits against mismatch, clipping and excessive heat
  • especially suited for digital modes (WSJT)
  • built-in electronic sequence control with remote powering of external preaamplifiers
  • additional time shifted PTT for transceiver
  • remotely controllable



Technical data:


Microprocessor controlled power amplifier

variable PTT control

Operation by active TFT touch display

Frequency range [MHz]:144-148, incl. USA Band
Output power [PEP]:750 W on 50 Ohm at 48 volt
Output power [FM]:750 W, CW, digital modes (WSJA)
Input power [PEP]:20 W
Harmonic ratio [dB]:- 80
Gain [dB]:> 17
Intermodulation [dBc]:ca. - 35
Current consumption [A]:ca. 23 at 750 W PEP
Power supply [V]:48
Efficiency [%]:Peak 70, already at 100-500 W over 60
RF input / RF output:N-female, 50 Ohm
max. VSWR:1 : 1,8
Cooling:temperature controlled by two fans
Dimensions PA [mm]:
280 x 235 x 140
Dimensions power supply [mm]:
380 x 120 x 140
Display by TFT touchscreen:Output of input and output power, SWR, temperature, voltage at the DC input, status of the remote supply of LNA PTT status, error messages

Download Manual

Download Datasheet