Hi Wayne,

You will also need to buy or build a demodulator board other then mine. I no longer 
sell my USGS Telemetry demodulator board since I never sold enough of them to go into 
production. I wish I could help you out, but right now I have two big projects going 
on and my plate is pretty full for the next few months.

Regards,
Larry Cochrane
Redwood City, PSN

Wayne Abraham wrote:
> Hello all
> 
> I am in the process of designing a three-station seismic network for 
> monitoring two volcanoes within 8 kilometers of my home. I already have a 
> geophone buried at my house and am monitoring a nearby telemetered site. I 
> would like to install two remote stations using geophones, low-power 
> transmitters and Larry's amplifier board.
> 
> My main problem is converting the amplified seismic signal to a tone for 
> transmition (the received signal will be decoded using Larry's decoder 
> board). Does anyone on this list have schematics, internet links or know of 
> anyone selling this encoding equipment?
> 
> Thanks for your help
> Wayne
> http://dominicapsn.freeyellow.com
> 
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