joe@dayton.UUCP (Joseph P. Larson) (06/27/89)
I ride a motorcycle. My wife and I would like to have an intercom system so we could talk comfortably to each other on our trips. Looking around, Radio Shack has an FM transceiver that uses an earpiece as both microphone and speaker. A pair of these would work great and would be useful when we get the second bike, but they want $90 for it. DAK has something similar to this, but I've tossed my DAK catalog, so I'm not sure exactly what it is they have, but I think they want bucks to. Now, this shouldn't be that difficult, especially if I just want the intercom feature. What I need is either a very small microphone or perhaps a throat mic fed into an amplifier fed into my wife's earpiece and vice versa -or- an earpiece mic with otherwise the same setup. I'd prefer to use an earpiece as the mic, too. So -- lotsa questions: 1. Has anyone else out there done this before? Care to share your plans with me? 2. Could I just take a microphone and wear it at my throat underneath my coat? This would make it easier as I wouldn't have to mount the mic inside my helmet somewhere (I don't care to drill holes!). 3. Does it take a special earphone to also serve as the mic? 4. Anyone have a vox circuit diagram handy? The basic problem is location of a microphone. An amplifier is simple. If I just wanted a simple 2-way intercom system, that'd be easy. But I am limited with my mic. There isn't a lot of room inside a full-face helmet. Comments? Any help I can get would be greatly appreciated. -Joe -- Life is a cabaret (old chum). UUCP: rutgers!dayton!joe (Picts 1-13 are DHDSC - Joe Larson/MIS 1060 ATT : (612) 375-3537 now ready.) 700 on the Mall, Mpls, Mn. 55402