Hi Stefan !
10 mA at 5 Volts will not be enough. You may get analog(!) audio
transmission sets for 2G4 or 5G8, but they do not use WLAN.
As Wolf has stated, there will be a lot of software involved in all of
such a system you want to use.
Maybe this could work w/o software development:
Transmitter site using a RaspberryPi equipped with ext. Soundcard and
WLAN. Software "VLC"/Linux for "audio streaming"(Server).
Receiver site using standard (WLAN-)Windows PC and software
"VLC"/Windows for streaming client.
Setup both VLC's to uncompressed audio. That should deliver 16 Bit
Stereo audio (max. 96dB SNR) at 44.1 or 48 kS/sec.
A RaspberryPi consumes abt. 3 Watt + soundcard + WLAN. Would that fit
your requirements ?
73 de dg3lv tobias
Am 08.03.2014 15:08, schrieb Stefan Schäfer:
Hi all,
Again i spent some time to find a module which allows to transfer a
mircophone input signal via WLAN to the PC. Without success...
To make things clear:
The system has to consist of to parts:
1: The first one is battery supplied and has a microphone input (like a
cheap external USB soundcard) and a WLAN output, using an external
antenna and SMA plug. I.e.: Input: 3.5mm microphone jack. Output: SMA
WLAN antenna connector.
2: The second part is connected to the PC and is a WLAN receiver that
appears as a normal external USB soundcard and allows to receive the
audio signal from the first part of the system.
The system allows to run a /p receiver for VLF or any other band.
An expert could create such a circuit for himselfe but i need to buy
something like that, if it is available. But all i can find in the web
is the opposite way, i.e. people who want to transfer their sound from
the PC to a /p loudspeaker or headphone, argh... Or, a big device which
includes a real big microphone (dynamic range ???). These are expensive
systems.
However, external soundcards are cheap and WLAN modules are cheap too.
So, isn't there such a device for a few EUR in the web, these days? It
has to have a dynamic range of at least 100 dB, like the 2 EUR external
soundcards at amazon do (with some luck).
Any help is much apprechiated :-)
73, Stefan/DK7FC
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