Experimental Set-up & Preliminary Results of Magnetic Pulsational Observations at Alibag

128-131Experimental set-up for recording longer period pulsations of periods 40-600see is described. The system which makes use of fluxgate with suitable filter and amplifier circuits has proved to be satisfactory for recording these pulsations at a low latitude station Alibag. Some typical examples of Pi 2 (40-150 sec), Pc4 (45-150 sec), Pc 5 (150-600 sec) and Pc 6 ( > 600 sec) type of pulsations are shown and some preliminary results of these types of pulsations are presented