Gateway Electronics has a $10 kit including a geophone and adjustable threshold detector that flashes an LED when it detects vibration. Using a relay instead of the LED, I think it would probably work for what you are doing. Their website is at http://www.gatewayelex.com I didn't see it on their website but I saw them in their store yesterday. Perhaps an email to them would do the trick. Regards, Karl At 10:48 PM 1/18/2001 EST, you wrote: >i am trying to use a geospace geophone to close set of contacts that >initiates a radio transmission to a remote reciever. this thing needs to be >adjustable in sensitivity or amplification in order for human footsteps to be >the minimum neccessary to activate the contact closure. it must be dc in >order to be used in the backwoods. any help or info would be greatly >appreciated. > >Thanks, >David >__________________________________________________________ > >Public Seismic Network Mailing List (PSN-L) > >To leave this list email PSN-L-REQUEST@.............. with >the body of the message (first line only): unsubscribe >See http://www.seismicnet.com/maillist.html for more information. > > __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>