Tipa

The Teroz 604X amplifier for the VHF (DAB) band 174 to 240 MHz is equipped with a miniature microwave amplifier with E - PHEMT (ultra low noise) technology. At the input and output of the amplifier, there are circuits that suppress unwanted signals outside the operating band and adjust the impedance to 75Ω unbalanced. Practical tests have shown that the amplifier is able to process the signal from the antenna with a level around 30dBµV, which is on the edge of the noise threshold and thus suitable for remote reception. A great benefit is this amplifier in places where there is a very weak useful signal in close proximity to a strong interfering signal, where it is necessary to first amplify the signal from the antenna and only then it is possible to debug the interference. The great excitability of this amplifier allows just such use without the risk of overdrive by a strong signal and degradation of the useful signal. In this case, it is recommended to place the amplifier as close to the antenna as possible, because each dB of coaxial cable attenuation is added to the amplifier noise. The amplifier can significantly reduce the noise figure of the whole amplifier chain in this frequency band.
However, the amplifier is also suitable as a power element for larger signal distributions, because it is able to supply an undistorted signal with an output level exceeding 120 dBµV !!! Which is comparable to the values ​​of power amplifiers for STA and TKR, but at an incomparably lower price.


Technical parameters :

- G gain: 23 dB
- F noise: 0.7 to 0.8dB
- transmitted band: 174 to 240MHz
- max. output level for: >120 dBµV
- input and output impedance: 75 Ω
- power supply to the output connector: 12V/90mA
- input and output connector: F female
- box dimensions: 24 x 36mm
- installation in the environment: indoor