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<br />I <br /> <br />Because of this latest failure, suspicions about the functioning of the <br />. equipment were aroused. Phase I, testing of equipment, was resumed using the <br />remaining five transmitters. <br /> <br />JUNE 9 - PHASE I RESUMED <br /> <br />. <br /> <br />On June 9, the remaining five transmitters were placed at five locations in <br />the river to evaluate their performance over an extended period under river con- <br />ditions. <br /> <br />. <br /> <br />JUNE 10 THROUGH 20 - PHASE IV CONTINUED <br />This period was devoted to intensive efforts to locate the radio tagged <br />. squawfish using the boat. On June 15, 40.670 was again located, this time in <br />Pariette Draw. <br />On June 15, the SR-40 was used in the airplane to test the tags previously <br />. placed in the river. The SR-40 would pick up transmitters 40.631 and 40.682, <br />but not transmitteis 40.600, 40.640, or 40.~91, even when flown over at altitudes <br />of 300 feet. The fish tagged with radio 40.670 was easily located in Pariette <br />. Draw. Following the flight, the SR-40 was taken to a local (Vernal, Utah) radio <br />shop, and it was determined that the SR-40 was only functioning intermittently. <br />Upon discovering this, the SR-40 was immediately returned to the manufacturer for <br />. repairs. The manufacturer later admitted it was their error in ,assembling the <br />receiver that caused the erratic operation. <br /> <br />. <br /> <br />JUNE 21 - PHASE IV CONTINUED <br />On this date, an attempt was made to capture the 40.670 fish still in <br />Pariette Draw. The purpose of the attempt was to check the fish's general con- <br />dition and the healing progress of the incision. During the attempt, the fish <br /> <br />. <br /> <br />13 <br /> <br />. <br />