Summary of Contents for 101

Page 1: ...widerone with occasional flashesabove and belowthe levelofthe true bottom though these signa s aren tso distinct as the onesre turnedby scattered rocks on a smoothbottom Bigrocks or stumps on a smooth bottom send back signals above the level ofa smoothbottom the distance dependingon their height Ifyou watch as you ap proach a post or atree however you will often see the signal climbup thendescendt...

Page 2: ...t to measure depth and as anindi cator that the depth sounder is on Even though the neonbulb flashes it happens so often that the humaneye seesit as a nearlyconstant light Thebulb also flashes at the point on thedial thatindicates the depth Fhepoint isindicated bythelength oftime ittakesthe sound waves toreachthe bottom andreturn In addition echoes ieturnedfromany objectin the vaterbetween the sur...

Page 3: ...ect it rebounds Sincethe speed ofsoundthroughwateris known the time lapse between the transmittedsignal and the receivedechocan be measured and the distance tothe object determined The Eagle depth sounder trans mitsahighfrequencysound wave whichisinaudible tofish as well as humans through the water At the same time ahigh intensity neon bulb whirls ata Somefish including bass catfish walleyes and c...

Page 4: ... KNOB This knoboperates in amanner similar tothevolume control on aradio timingthe knob clockwise will turnthe uniton andturningthe knob back the full counterclockwiseposition willturntheunit off timing the knob in acontinued clockwise mannerwill increase the receiversensitivity and weaker echosfromdeeper water can andwillbeobservedon the dial After mounting the trans ducer turnthe uniton by turn ...

Page 5: ...eedge ofthe hull See Figure 8 The transducer should be mounted awayfromstakes ribs orotherhullfittings thatcan cause turbulence 4 Ifthe hull deadrise exceeds 4 degrees a shoot thru hull mount on the centerline of the hull or an optionaltrans ducer shouldbeused See Figure9 5 Place the bracketagainstthe transominthe selectedarea with the bottomofthe traps ducer flushwith the bottom of the hull Align...

Page 6: ...hull on planing boats andforward ofthe engines and orwater intakesindisplacementhulls Watershould flowsmoothly in thjsarea and it shouldstay inthe water atall speeds 3 Before permanently bonding the tratisducer to the hull trial runsare recommended to findthe bestmounting lo cation Once an areahasbeen determined tobe agood spot for the transducer tobe mounted addsome waterto the area and placethe ...

Page 7: ...hulls thathave flotation materials such as wood or foam inbe tween layers offiberglassif the material is removedfrom the chosenarea For example some manufacturers use a layeroffiberglass then a core ofbalsawood andthenthe outerlayeroffiberglass By removingthe innerlayer of fiberglassandthe balsawood core the outer layer of SIGNALS RETURNEDBY A ROCKYBOTTOM Fig 20 Plie signals returned from arockybo...

Page 8: ...runningwhen you make this test Holesin the baseofthe bracket allowwood screwor bolt mounting Thread bothknobs partiallyinto the mounting bushings on the case The gimbalbracket has slots in the topof it thatallows the unitto snap in without removingthe gimbalknobs These slots will clear the threads ofthe gimbalknobs but notthe mounting bushing on the case 2 The bracket sideswill haveto be spread sl...

Page 9: ...miles perhouris4 4 feet per second andthe diameter ofthe circlecovered by the transducer is approximatelyfourfeet at thatdepth The signal returned by afishl54eet deepwould last halfa second and from afish 60 feetdeep the signal would last approximatelytwo seconds This is agood pointto remember because fish often school in a horizontal plane sometimes rather widelyscattered inthat exact level but n...

Page 10: ...e service callor writeusattheaddressbelowbefore sendingintheunit We maybe able tosaveyoutheinconvenienceofsendingtheUnitbackforrepairs Ifyou dohavetoreturn theunitforservice pleaseenclose aletter statingthe problemthatyou are having withthe unit This will assistus in the testingandrepairofyour depthsounder Mail to EAGLEELECTRONICS P O BOX 669 CATOOSA OKLAHOMA 74015 Ifyoulive outofthe stateofOklaho...

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