Note
The Antenna Tuning Unit Type MA.144 and MA.144C are T-section networks designed to match a whip type antenna to the 50-ohm impedance of a Racal Linear Amplifier Type TA.99. Satisfactory matching is obtained with antennas ranging in length from one-fourteenth wavelength (a few ohms) at the lowest frequency to one wavelength (several thousand ohms) at the highest frequency.
Specifications
– Frequency range:
MA.144: 1.5 to 25 MHz
MA.144C: 1.5 to 30MHz
– Power rating: 1kW RMS
– Antenna impedance range: 3 ohms to several thousand ohms with positive and negative phase angles.
– Standing-wave ratio due to the unit: Less than 1.5:1
