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Hi Hydro, Dude, please don’t think that anyone thinks that you are a ‘know it all’. I asked specific questions that I was unsure of and you provided great answers which helped me better understand on how to proceed on my next steps. So with the last few posts in mind in addition to recently reading the Robbe manual here is a recap on what I learned: 1) Be careful on choosing wires because not all wires are created equal- I think that there is a great take away here because those that heed this precaution can end up scratching their heads when the system doesn’t work as planned. It’s a good idea to try to understand the type of wires used in the original application and try to match it with the same type of wire to avoid power loss. 2) The 75 MHZ system requires the receiver wire to not only run outside the boat but the antenna needs to be able to get reception from all 360 degrees in order for it to be effective. The main concern here became the radar mast because I plan on making it all or mostly metal. As hydro suggested it would be a safer bet to construct it from plastic because the signal can then easily pass through the mast on all sides. Again, there are more great takeaways here!! For me to stay consistent with the high quality materials, in addition to me being stubborn  I’m going to continue with my goal on building a metal mast, but in respect to keeping up with Hydro’s good advice I decided to add an independent platform with a fixed metal rod antenna that will come off the back of the mast light and extend even higher than the mast light. This will assist by allowing the boat to receive signal from 360 degrees and the cable wire will link right up to the solid antenna. (This antenna was purchased from Tower Hobbies so it is legit) As a way to show responsibility I’m going to test the reception on dry land so I don’t pose any risk to the boat. I think these were very productive posts and thank you for helping me better understand how it all works!!  To Bill’s point about transmitters, the 75 MHZ and the 2.4 GHZ systems are two entirely different monsters. My 75 system requires the antenna to run outside the boat for optimum performance whereas the 2.4 system proves it doesn’t really matter. Just last night I measured the length of my transmitter antenna on the Robbe F-14. I mentioned a couple of posts ago that it was the largest I’ve seen. Well, I took a measuring tape and measured it and this thing came in at 42” long!! It is some monster. Then when comparing it to Bill’s 2.4 unit that I personally used he has like a 2” antenna on it with awesome range. This shows that the technology is very different. Another thing that I learned about the two systems is that the 2.4 unit is a great surface system but it is useless underwater where Subs are concerned. In this case the submarine guys all prefer a 75mhz system because it works well and penetrates underwater whereas the 2.4 bounces off water and is useless on subs. In the case of Dauntless, let’s hope it doesn’t try to show-off and play submarine!  Shifting gears here, yesterday the other 4 rechargeable batteries came in for the Robbie F-14. I brought it home, installed them in the battery pack holder and plugged the charger into the TX. A couple hours later I flipped on the switch and the gauge quickly jumped to 100 percent. So I know that it registers there. The next step is rigging up the receiver and seeing if I can run another test, Once I see that it picks up a signal from the transmitter I will go ahead and start the wiring process. Over the past couple of days I installed the software to the sound module on my computer. Man this thing is complicated!! I did find out however that the owner of the company did not load the bell and the air horn onto the module like he was supposed to. This really annoys me because I was very specific in my correspondence that I wanted him to have this unit pre-loaded and ready to go and he agreed to do it. So now the module only has the PT boat sounds and I have to get this guy to send me the other two sound clips and add them myself. I guess the only good takeaway here is that it forces me to learn the software part of this thing but I was looking for plug & play. I did get to hear the PT boat sound on my computer and it does sound really cool. To wire up the module is again a bit complicated but after carefully reading the instructions I got it all to sink in.  -Rich.
< Message edited by Rich404 -- 5/3/2012 7:33 PM >
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