PaJay Posted September 9, 2015 Posted September 9, 2015 I have 2 lowrance Elite 5 HDI units. I have an outboard motor and my rear trolling motor is on the starboard side. I've had older units before that it didn't seem to matter where they were mounted. There are just so many different opinions about starboard or port. Who here does what and why? Thanks all! Quote
Super User Wayne P. Posted September 9, 2015 Super User Posted September 9, 2015 As long as the sonar pulse can be transmitted DOWN, that is all that matters with a craft that has an outboard. Which side makes no difference. Inboard type boats have to allow for the prop that is forward of the transom. 1 Quote
PaJay Posted September 9, 2015 Author Posted September 9, 2015 As long as the sonar pulse can be transmitted DOWN, that is all that matters with a craft that has an outboard. Which side makes no difference. Inboard type boats have to allow for the prop that is forward of the transom. Now that's about the most sensible answer I've seen!!! Thanks! Quote
eddallen Posted September 9, 2015 Posted September 9, 2015 So we can have a difference of opinion on this. Lots of things come into play when mounting a TM xdcr on a boat and of utmost consideration is prop direction. Since the direction of rotation causes tremendous air bubbles (bad for sonar) on the opposing side, it is the main reason a starboard mounting is suggested. Most outboards have a right hand turning prop as you look at the prop from behind. The other things for mounting consideration is type of fishing, is there an off-shore bracket in use, single outboard or twins, and hull configuration. So maybe or maybe not........you're drilling the holes. 1 Quote
Super User Wayne P. Posted September 9, 2015 Super User Posted September 9, 2015 So we can have a difference of opinion on this. Lots of things come into play when mounting a TM xdcr on a boat and of utmost consideration is prop direction. Since the direction of rotation causes tremendous air bubbles (bad for sonar) on the opposing side, it is the main reason a starboard mounting is suggested. Most outboards have a right hand turning prop as you look at the prop from behind. The other things for mounting consideration is type of fishing, is there an off-shore bracket in use, single outboard or twins, and hull configuration. So maybe or maybe not........you're drilling the holes. Horse hocky!!! If the transom is actually the back of the boat and not recessed like some commercial netters use, the outboard cannot affect the transducer at all unless the motor is in reverse. Water has already passed over the transducer face before the prop affects it. With the boat moving forward, any disturbed water that the prop causes is rearward. Simple physics and common sense. This is where Tracker puts their transducers since 2012: 1 Quote
eddallen Posted September 9, 2015 Posted September 9, 2015 Horse hocky!!! If the transom is actually the back of the boat and not recessed like some commercial netters use, the outboard cannot affect the transducer at all unless the motor is in reverse. Water has already passed over the transducer face before the prop affects it. With the boat moving forward, any disturbed water that the prop causes is rearward. Simple physics and common sense. This is where Tracker puts their transducers since 2012: Haha OK 1 Quote
PaJay Posted September 9, 2015 Author Posted September 9, 2015 Didn't mean to cause hard feelings but this seems to be the debate everywhere. All responses will be considered and much appreciated! Thanks! Quote
PaJay Posted September 9, 2015 Author Posted September 9, 2015 Ok. No matter which side the transducers are mounted on can two transducers of the same unit type be mounted by each other without cross talk? If one units sonar is set at 200 and the others units sonar set at 800 would that eliminate all cross talk and interference? Thanks! Quote
Super User Wayne P. Posted September 9, 2015 Super User Posted September 9, 2015 Ok. No matter which side the transducers are mounted on can two transducers of the same unit type be mounted by each other without cross talk? If one units sonar is set at 200 and the others units sonar set at 800 would that eliminate all cross talk and interference? Thanks! If your units have the separate frequency settings, you can run one with 83 and 455 kHz and the other with 200 and 800 kHz so they don't cross talk. The same 2D freqencies can cross-talk if the transducers are on opposite ends of the boat when their sonar pulses overlap. 200/455 and 83/800 also. You will get 2D and DS at the same time with the HDI units. 1 Quote
PaJay Posted September 9, 2015 Author Posted September 9, 2015 If your units have the separate frequency settings, you can run one with 83 and 455 kHz and the other with 200 and 800 kHz so they don't cross talk. The same 2D freqencies can cross-talk if the transducers are on opposite ends of the boat when their sonar pulses overlap. 200/455 and 83/800 also. You will get 2D and DS at the same time with the HDI units. Thanks again. That is what I thought. I'm fairly new to doing my own. I always had everything done at the shop but they up and moved out. Quote
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