Tech Staff Meeting Notes November 30, 2006

Current Top Priorities are:Station Maintenance, and ET Stations. (Also wish to get INV populated.)

There are four levels of priority.
PrioritiesWish to try to get these done (or make progress on) before the next meeting (yeah right)
Second TierFit this in too if an opportunity arises. May be good to do instead of priorities but check with Mitch. Likely to be a priority in a previous and/or subsequent month
As Time PermitsFit these in when you can but not instead of first or second priorities
OtherStuff we hope to get to and don't want to forget about

This task list as of September 12, 2006. Note that everyone is still needed to work on essentially all tasks. There is however, a single person who is primarily responsible for each one. Mitch of course, is ultimately responsible for everything.

Greg's todo list is incorporated into these notes.


Lenox Agreement. Jim noticed the 12 year agreement for the LNXT node is about to expire. Mitch sent renewal yesterday.

James will coordinate with Bill or Chris when he will be going to the field and needs assistance. Notes from James:

Firstly, the radio tests in and around Tiptonville are complete. We'll likely do a relay shot from RLAP to New Markham, and then bring both sites back to the highschool in Tiptonville. We have permission from the school to use their 50' tower on-site. We'll need a second shot from our site at the Corrections Complex (NWCC) to the highschool. For this, we'll need either a roof or building mount antenna at at least 30' height. The MIS building itself (where out stuff is) can give us almost twenty feet. We'll need to buy high-gain antennas and mounting hardware, and some _serious_ lightning protection.

The second set of radio tests will be at Steele, Missouri, hopefully on 10/20. I visited this last Friday and spoke again with superintendent Mitchell Fisher. WREG has a short mast on one side of the administration building of the Steele schools for their weather station. I'm going to email our contact there to see if we can mount our antenna on that mast. The building's mechanical room has roof access and plenty of space for our radio equipment enclosure. Bob seems to be waiting for the results of this test before he buys radios and antennas.

We've not been able to secure permission to get back inside the terminal building at RLAP. To winterize the station, we need to replace the five aircells with another solar panel, battery, and a charger that will take two panels. Sure, we could trench AC power out to the station, but that would be wasted effort if we _do_ get permission to move back inside. Meanwhile, having the charger, battery, and panel hardware on-hand would be nice for one or both of our new sites around Tiptonville. Mitch and I are in agreement that we can't keep sponging off the seismic networks. We'll have to buy our own stuff.


The map shows stations with yellow triangles being new ones.
SMNC may be getting interference and the gain channel is showing up on the vertical (but doesn't look right). Turns out its interference with a nearby digital transmitter. Need to switch frequencies.
SMNC4done (see note above)
BHT8move (eventually)
ETT has some breaks in the coax. Should probably replace entire length. Done.
Flat gap, Van hill, and GMG are on deck. Last trip we found out that they were grading the road (much needed). This prevented getting into Van Hill but John did see about gettting them to continue on to the top. Not sure if he was successful. Also found out that the work on the tower at GMG wasn't complete. They postponed to 12/1 so another trip is tentatively scheduled for 12/4.
CCRT has been acting strangely. Critter damage has been repaired twice, might need a major rebuild.
Chris got an insurance letter, need to make copies and put them in the vehicles.
TZTN needs a gate and have episensors swapped. The one there now belongs to SLU. Sensor has been swapped, John will ship the the replaced one back to SLU.
GFM has a cable problem.
BRBC was down for a week starting 11/9 while they do work on their internet. Its still down. Clearly the necessary time was underestimated. Al is looking into it.

Bill is getting familiarized with these so he can take them over.
GPS pods changed at ADSC and TRSC. SHTN is the only one left. Mitch has the code correct the leap second error but has been paranoid to run it (get over it dude). It will run on these stations: ADSC TRSC SHTN GILT CSTN JCMO STIL HAIL SWET. The code will only modify data between 200509040000 and 200601010000 exclusive. It sets the sac header value kuser0 to "lp fix" and will not modify any data that has that value (to avoid doing it twice).
ADSC was a networking issue. Host changed ISP.
CVTN and ASAR optical isolation. Need to upgrade to year 3 hardware. Hardware ready. James brought back some nice pictures from CVTN to help figure out how to do it (e.g. the conduit is way too small).
John will give Bob a ring to get the new SLU shipping address (to send back the episensor) and ask about MVKY.

Routine Maintenance.

Unscheduled Maintenance
Several of these stations are problematic. Jim replaced that canister on a couple and they work fine in the shop. Greg's current theory is that there is a microscopic film of corrosion on some that forms between the copper springs at the bottom and the aluminum canister. He surmises that this causes some kind of goofy current or rf feedback internal to the canister. A small movement reestablished conductivity between the springs and canister and the problem goes away. Whatever, its all black magic to me.
These stations have lots of glitches on them (mitch took them out of the sta/lta trigger subnets),
I need a new list, the above is from the previous meeting. Jim reports that the "glitchy" stations all have lower receive levels than before. Possibly age? Or are the trees higher now? Greg presented the possibility of nearby power line insulators that are bad. This would make arcs that could appear as impulses. Investigation continues.

GNAR had a several second timing error but the DAS indicated all was fine. Jim rebooted and it corrected itself. Weird but watch out for this. Seisnetwatch should catch this and indicate a large latency if the timing is out far enough.

Second Tier Priorities

NCCU Done.

Steiner Brain Dump Seminar Greg is ready. Mitch acquired a voice recorder and Voice-to-text software. Then we'll take digital photos of anything significant on the white board. Combined, with Greg's drawings, documentation, etc, this should make a nice searchable document. Doesn't bother me if someone does digital video too, so long as I don't have to mess with it.

FDL. Mitch needs to talk with Horton about what to do about FDL laptops. Bill is in charge of everything in the fdl. He'll be developing SOP's to keep track of who has what where.

3904 Power Need to draft an updated wiring diagram of 3904. Need to update the diagrams on the circuit panels. Greg put up signs on the panels with a call down list. Done.
Chris is going to make a diagram for 3890. Good luck son.

As Time Permits

Mitch needs to write an ew module to monitor the environmental channels newly installed at the nodes. Done and deployed at all nodes with the env channels. Env_alarm runs at the nodes and sends alarm messages to mainworm. Send_env_alarm listens for them and sends an email when it sees one. MKTA and MTTN still need the gizmo to generate these channels. It appears that the module (env_alarm) sends an OTMP off message on reboot (but not on ew restart). Mitch's theory is that it takes longer for adsend to sync to IRIG and start sending when there is a system reboot than it does when there is just an ew restart. This causes an apparent transition from low to high and env_alarm thinks it is a change of state to off. Will increase time to ignore on startup. Of greater importance is why it only sends an OTMP off instead of one for every channel when this happens? Mitch will investigate.

Generators Old generator needs an exhaust pipe.

Inventory Jim has all the broadband sensors defined and is working on additional equipment (e.g. isis) and the connections. Mitch will install Bill's account in mysql and inv so he can start building stations.


All hardware is in house to replace the nodes in the coming year. We'll upgrade to ew v7.1 at the same time. This means we'll be using scnl instead of just scn. Steve, Al, and Mitch are working on the details (headaches) of that. Glasworm is the converter and is operational. New switches for the scnl trace-wire are in house. Steve will install.

I-40 Bridge.
Greg will arrange and supervise regrading of HDBT. The regrading was started and there were, shall we say, problems (more like a CF). Hopefully the contractor will have better luck next time. Digitizers and sensor are on order for HDBT/borehole upgrade. Greg and Steve worked out details and design. Steve ordered the radios and 3 2port terminal servers. Chris is arranging to have a fence installed (after any pad, gravel or whatever is installed). Cost is $1100 installed (must be real silver). We don't want to do it ourselves since it has to tie into the existing dilapidated fence.

Steve is getting a port number to establish rt continuous. Done.

MPHB. Withers needs to determine current orientation so we can pull it and orient correctly. Helicorders look strange. Need to verify the data.

VBMS. ASL crew will install sensor, das, and vsat in November. Not sure what the status of this is/was.

3904/207. Need two new power circuits in that room. There is one free breaker in the panel. There is a single 4 outlet circuit to the darkroom that isn't used and will be cannibalized. Chris will make it so. One should be on the west wall.