ElectronicGeek

Dear Forum Members –Especially Seismology & Geology Enthusiasts San Francisco State University (SFSU) will be decommissioning a three axis seismograph station (using the traditional style of a recording drum on paper) and all the equipment can be made available Free to any person or agency –yes that's right for Free!!! The station was originally built by me and donated to SFSU back in the late 80's. The system uses a telemetry link over a conditioned phone line from seismometers at a site 5 miles from the campus. However the phone connection costs about $100/month and budget constraints prohibit further expenditure for operation of the system. Because the university acquired the station as a donation from me back in the 80s, (it was not a formal purchase) it is not subject to the government regulations for disposal of state-owned property. Therefore, it is possible for the university to give the equipment away without any constraints. The system was operational before decommissioning and here's a description of what is presently available: · A modular station unit containing three Teledyne/GeoTech Model S-13 seismometers, a "Compact Remote Station" - Model 45.50 with 3 amplifiers, a power supply, and the telemetry system for a phone line connection. The modular station unit is actually a cubical steel frame with everything secured inside for strong motion resistance. · A three-channel Teledyne/Geotech Model 49.03 Discriminator rack. · Four Teledyne/Geotech AR320B Helicorder amplifier chassis. One amp chassis has three separate channels for the ground motion (north/south, east/west, and up/down) all in one chassis and the other three chassis have only one amp inside. · A modified version of the old fashioned style three drum recorder equipped with Teledyne/GeoTech pen motors for each channel. The drum rotation is 1 rev. per 15 minutes and the trace separation is variable from 1/8" to 1/'4" per revolution. · Recorder control unit (RCU) for the 3 drum recorder. The RCU contains the controls the drum rotation, lateral movement of the pen motors, and power for the heated stylus pens. · A metal framed plexiglass display case for the drum recorder and mounted on top of a steel framed table with casters. · Manuals/schematics are included for all the Teledyne/GeoTech components listed above. Please feel free to forward this offer for anyone who might be interested in finding a home for this professional grade system.

Greetings To All On The Science Forum. I'm a newbie on the Science Forum and my "Day Job" is an electronic and electro-mechanical technician for a large transit agency here in San Francisco Bay Area. However since the 1960s, I've been an amateur scientist and my main interests are in seismology, meteorology, and a little bit of astrophysics as well. I actually design and build various types of scientific instruments, however my main interest is seismographic station equipment. Over the past 3 decades, I've manufactured and installed seismological stations for several universities and colleges. Aside from seismology, I'm strongly interested in something called "Cosmic Electrodynamics"–CE- which is the role of that electricity and magnetism plays in the universe. The so called sunspot and solar flare cycle is the most common form of CE and my interest in the phenomenon was spurred after viewing several of the aurora displays in the San Francisco area over the past 20 years. Cheers- ElectronicGeek ("EG")