Posted: 10/18/2012 5:27:53 PM EDT
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I have been looking into making an ecaller for the past several days. I figure, instead of dropping 250+ on a foxpro, I can build one myself for much much less. The major stumbling block I hit was I want it to be wireless. Doing the actual box/call/ect is simple(I assume from what I have seen) but the wireless part, I have hit a stump. I would like it to be wireless still, so I don't have to snake 50y of speaker cable to where I place it.
The sounds will come from either my extra IPod, or my iphone. So thats taken care of. I can get the components for the speaker and an amp at radio shack, so that's taken care of also. Orignally I found some high end radio transceivers, but they were going to put me in the range of a foxpro, so I decided against using them. The medium end will have to much noise in the transmission for it to work for me(radioman in the navy, keep that signal clear/crisp at all costs). Low end I overlooked completely. Then today, I had an interesting thought. Using some 2 way radios, I should be able to well exceed the range of a foxpro, or any other wireless caller I know of. So heres my question(part one). What are some good 2 way radios in the 70-100$ range for a pair that have. VON, good reviews, and a 3.5 audio out ALONG WITH the ability to use a microphone with it(so I can pipe my MP3 player into the radio I have, unit placed in box will recieve/pipe out though the amp/speaker). I also found this Johnny Stewart Attractor Ecaller for 40$ online. Using this unit as a base for the build, how hard would it be to only switch the audio input on the remote on the remote to my iphone to provide the MP3's instead of the remotes components, rip the speaker off the other unit, and install an amp/speaker of my own? I don't mind ripping the all the internals of the base unit out, as I had planned on mounting it all to the top of an extra Sig handgun carrying case I have laying around and stuffing the internals inside the case. However, I am clueless on how to wire in extra batteries to power the amp/larger speaker for longer. Would I simply run them in a series or what? ETA: For anyone who says this is against FCC regs, IF the reason its against the regs is the units transmission power, I got my FCC license during schooling. Never looked much more into what it allowed me, as it was a "take this home, study if you want, and earn another cert for your evals" style thing. So would this allow me to still build this unit? |
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Azden wireless remotes One of the coyote hunting forums: http://www.predatormastersforums.com/forums/ubbthreads.php?ubb=showflat&Number=1816338&page=1 |
| Alright I'll try an keep this shorter, I don't think you can use a two way radio for this, plus you probably wouldn't get a very good transmission out of a two way. Heres a link to a simple amp http://hackaday.com/2011/05/01/lm386-altoids-tin-amp/ you will probably need a micro controller with a zigbee or something similar to control it wirelessly. Depending on how your planning on controlling it you could either A.) control your iPod from the micro controller or B.) just use the micro to disconnect one of the leads going to the speaker. You also going to have to make sure that this is all enclosed in a weatherproof box. If you wanted a caller without a remote controller this project would be a whole lot easier to do. Which is probably what I would suggest doing first try everything out without the wireless get it all working and then when your done start exploring your options for wireless. |