The 'Sirio GPA 135-175' is a omidirectional low gain, mono band base station antenna. Suitable for land and marine service.
It works on the frequency range of 135-175 MHz by using the tuning diagram enclosed. The matching coil is DC feeded for a perfect protection from the static discharges. Sirio GPA 135-175 is made of non-corrosive aluminium and assembled on a very strong base of die-cast metal to get the maximun robustness and the best performance. Tuning is easy by following the attached directions.