ITB from Italy manufactures power amplifier modules, using state of the art 48V MRF6… transistors by Free-scale. These transistors make it very easy to have a linear amplifier at very high amplification levels. The efficiency of the modules is typically around 70%. The modules come pre-assembled and don’t require alignment. They are built on Teflon PCB, mounted on solid 5mm copper heat sinks.
Some modules have a directional coupler and/or a SWR bridge installed. The construction of the transistors and the entire modules is very robust. Some of the modules would withstand a SWR of up to 65:1, given enough cooling. This enables you to construct a power amplifier which are easy to use, without any tuning.
All PA modules must be installed on a large, actively cooled heat sink for operation. The operating temperature must not exceed 40°C at 25°C ambient temperature. For best heat coupling the copper base (5 to 5.5mm thick) is precision milled. The ready to use ‘Box’ models come installed on a large heat sink. To build a fully useable amplifier further items like HF switching, power supply, fans, protection circuitry, maybe a low pass and a case are required.
144MHz PA Modules
Super compact final amplifier modules for 2m, up to 1000 or 2000W output power. Comes installed on solid 5mm copper plate for installation on a larger heat sink. An inhibit input can be used to shut down the amplifier in case of high SWR or other malfunctions. Input and output are designed to use 50?, allowing direct connection to coaxial cable or coaxial sockets. For operation a low pass filter like IL-1KLPF is recommended. When using higher input power or as protection against power peaks a power divider at the input is recommended, for example the IL-ATT-6DB.
Offer from WIMO:
As an introduction of these new modules we have a bundle of the most relevant products for a do-it-yourself 1kW PA for 144MHz. The bundle IL-144-INTRO contains:
144MHz 1000W Module (IL-144-1KMOD)
144MHz 1000W Low Pass Filter und Directional Coupler (IL-144-1KLPF)
Power Supply 48V/30A (IL-PSU)
Connector Set for PSU (IL-PSU-KIT)
To establish a PA, we STRONGLY recommend the use of a power attenuator (see below). The attenuator is NOT included in the bundle, please order separately.
IL-144-INTRO Bundle instead of 1279,50 ? now only 1079,00 ?!
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