Looking for a small Bluetooth radio-microphone.
in [Design]
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From: D Yuniskis on 6 May 2010 12:53 Hi Dave, David Chapman wrote: > Does anyone in this NG know of any company that markets a fairly small > short-range radio-microphone using Bluetooth technology? > > I'm fully aware of the two-way Bluetooth hands-free mobile ear-hangers > but, since they all have the ability to receive as well as transmit, > they are somewhat overcomplicated for my purpose. > > I'd like a very small basic speech transmitter capable of sending > one-way speech using Bluetooth over a distance of no more than 5-10 > meters, and a suitable receiving arrangement to go with it, of course. > > Ideally the transmission system should have some level of speech > security (frequency hopping ?) to protect against monitoring by any > other Bluetooth equipped user. > > If I can't find any suitable product that already exists, my Plan B > will probably be to build one using off-the-shelf Bluetooth modules. > Does anyone have any suggestions/recommendations regarding the best > modules to use for this application? I doubt you'll be able to build anything cheaper/slicker than a $20 COTS BT earpiece. Unless you have some other criteria that renders that approach inappropriate (e.g., longer battery life), why not just fill the "ear" (speaker) portion with epoxy (if you are dead set against it *receiving* anything) and just use the mic?
From: Adrian C on 6 May 2010 13:19 On 06/05/2010 16:48, David Chapman wrote: > > Does anyone in this NG know of any company that markets a fairly small > short-range radio-microphone using Bluetooth technology? > > I'm fully aware of the two-way Bluetooth hands-free mobile ear-hangers > but, since they all have the ability to receive as well as transmit, > they are somewhat overcomplicated for my purpose. You can get cheap bluetooth transmitters that attach to MP3 players e.g. USB Rechargeable Bluetooth Audio Transmitter Dongle (3.5mm Jack) Price: $20.78 free shipping http://www.dealextreme.com/details.dx/sku.27212 -- Adrian C
From: Jan Panteltje on 6 May 2010 14:03 On a sunny day (Thu, 6 May 2010 16:48:31 +0100) it happened David Chapman <dave(a)minda.co.uk> wrote in <8CJEQvCPTu4LFwRS(a)chassis.demon.co.uk>: > > Does anyone in this NG know of any company that markets a fairly small >short-range radio-microphone using Bluetooth technology? > > I'm fully aware of the two-way Bluetooth hands-free mobile ear-hangers >but, since they all have the ability to receive as well as transmit, >they are somewhat overcomplicated for my purpose. > > I'd like a very small basic speech transmitter capable of sending >one-way speech using Bluetooth over a distance of no more than 5-10 >meters, and a suitable receiving arrangement to go with it, of course. > > Ideally the transmission system should have some level of speech >security (frequency hopping ?) to protect against monitoring by any >other Bluetooth equipped user. > > If I can't find any suitable product that already exists, my Plan B >will probably be to build one using off-the-shelf Bluetooth modules. >Does anyone have any suggestions/recommendations regarding the best >modules to use for this application? > > Many TIA - Dave > >-- >David C.Chapman - (dcchapman(a)minda.co.uk) >-------------------------------------------------------------------------- Some year ago I used my Nokia what you call 'earhanger' to talk to the Linux PC. I got it working only one way :-) ALsa latest version, dbus, some cheap Bluetooth USB module so mall you can hardly see it when plugged into the USB. Maybe they fixed Alsa now so it works 2 way. BTW it worked 2 way in MS xp.
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