Hi Stefan
it is not completely compliant to your requests,
but, if you do not find the right equipment, you
can consider the "baby monitor" at 860 MHz ..
some units are digital, and you can route the
sound output to the line input of the sound card of your PC .
In free space, without antennas, you can obtain near 300 meters..
the system is "near" legal (you can consider your
new VLF receiver as a "baby" !!! hi!)
73 de Mauro IK1WVQ
At 15.08 08/03/2014, Stefan Schäfer wrote:
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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