Tech Staff Meeting Notes January 3, 2011

The top priority is always repair of down stations.
NM problem stations
ET problem stations

Duty Table


  • Repair down stations and routine maintenance (LVAR, CWPT and RDGT are top of the list)
  • Complete Year 3 sm upgrades (CBHT, MCAR, and RDST are top of the list)
  • CPCT upgrade prep

  • News & Highlights

    We'll have an informal discussion on Seth Stein's new book tomorrow at 1:30p in the seminar room.


    Short Period & Broadbands

    ISIS routine maintenance & service 2010:
    NFAR, DWDM, and EPRM remain.

    Dynamic NMDown list

    Top priority stations - LVAR, CWPT and RDGT

    Many of these could be bad batteries. Passing a load test in the summer is not always predictive of performance in the winter.

    NHIN/Steve (bad time in adsend, need new xlak)
    BOAR /Dave
    CHRM /Dave
    CWPT /Dave
    MPH.LL / Mitch
    LVAR /Dave
    LRAR.EHE /Dave
    BLAR.EHN /Dave
    NHIN.EHN /Dave
    RDGT-sporadic /Dave
    CATM-sorpadic /Dave
    CTCT-spordic /Dave
    GOBM-sporadic /Dave
    BRGM-sporadic /Dave

    Strongmo Down
    HDAR/HDBT/Chris comm issues between mud island and the weigh station?

    Muted Amplitude

    Gain Channel Problems
    FLPT/Dave (doesn't gain range)

    Isis Oxidation

    NODE Tasks

    Node reset instructions are at /gaia/smeagol/home/seisadm/ew/node.notes/phone.reset.proc
    Note that using the pc reset option with the GX620 system can cause it to hang. Only power cycles are recommended. The reset option has been disabled at most nodes.


    DSL is now installed but the networking is slightly different from lnxt. Steve is working out the problems making both the dsl and the dbb simultaneously accessible.

    Construction is ongoing at the mill.


    Chris is checking on the cost of a service contract for the generator.


    Need alternate comm path. Telecom says dsl isn't available (though we once had ISDN).

    AZTN: Replace XLAK clock.


    The DBB firewall installed and operating. Only specific ip's are allowed through. You need to use the route command to manually add a route. Evertying behind the firewall is the same D ip number but with 10.156.1 instead of 141.225.156. Remaining items include:


    Ownership, Operation, and Maintenance of the four Charleston, SC stations (C1SC, C2SC, ADSC, and TRSC) will be turned over the Univ. of SC at Columbia. Initial December 8-9 went well. John contacted site owner and IT people for firewall and permissions. He requested CERI access be continued for a tbd transition period. Mitch will work with Phillip to get data flow redirected to Columbia. Then those feeds will get added to the CO network export to CERI. The stations will keep the same name but the network code will change (from NM to CO).

    I added the firmware column as that seems to be causing problems at some sites. Are there problem sites that have all the hardware but need new firmware that should be added to this list? The worst offenders of this list are CBHT, MCAR and RDST. Year3 upgrades
    stationyr3 hardwareroutermss100firmware

    Replace foam rubber plugs at all year 1 stations (need to notch it to accomodate the GPS pods): ASAR, CBHT, CUET, CVTN, HDBT, LNXT, MCAR, NAIT, SFTN & TUMT.

    NAIT: Couldn't get the NWS cable modem to cooperate at NAIT (firewall?). Dean was going to ask Comcast about it and maybe get a new modem. Steve will follow up.

    CVVA is upgraded but there remains an unresolved issue with the firewall Steve is working with Merritt Reagan NGC to get them resolved. Merritt says their it security has been slow to respond but they're still working on this. Its due for a routine maintenance visit.

    Al and Jim have all the issues resolved and we're now able to download 200 sps triggers. These are the guidelines.


    Funding has been approved to replace the DAS's with Kinemetrics Granites.


    Bad CMG5 E/W.

    Not getting broadband feed.


    Replace two bad mss100's.

    Bad 100' accelerometer.


    Dynamic ETDown list

    How many of these are bad batteries or awaiting power upgrades?. Passing a load test in the summer is not always predictive of performance in the winter.

    TRYN-reinstall after tower is rebuilt.

    Strong Mo Down
    CVVA -firewall issues
    CSTN/John got a new lantronix card and is working now, but is very gappy- still true

    Gain Channel Problems
    SMNC see image

    Muted amplitude

    FPAL is about 10 degrees warmer than the Arkansas stations so some shade or forced ventilation may be in order.

    Mitch tentatively selected WMTN, ASTN, and RCGA. Possible alternatives include CPRT, CCRT. These selections were made solely on geography. We need to get together to discuss other issues such as noise, telemetry, permission, etc.

    STAR Node

    BHT. Chris reports that it is time to seriously pursue another site as access is even difficult by 4-wheeler. David reports moving it will take all the fun out it, what's the worst that could happen? John said that folks at Cumberland Trail State Park said we can put the station at another spot on Black Mtn. which is just a couple of miles NE of the present location. It is accessible by a paved road. We can pursue that or I can look for something that will put it further NE to get it more equidistant between DYTN and WMTN. Right now it is awfully close to DYTN and BCRT. Mitch likes the idea of splitting the difference between DYTN and WMTN. John will dig out his old notes and starting looking around.

    BRBC Node

    Power upgrades: TVNC, RBNC, and TRYN.

    TRYN: Hardware is removed from the tower and will be reinstalled when the new one is complete.

    There seems to be a strange, repeating signal on many of the stations, most notably on WSNC/RBNC. It repeats about every 14 minutes and lasts about 1 sec. Example data are in /gaia/home/mwithers/public_html/STAFF/Analog/2010/20100910_051500_MAN. Click this picture of it on CCNC. John listened for them on the spectrum analyzer at the BRBC node and reports:

    Every 13 min. 53 sec. there is a noise burst that raises the noise floor and knocks out our stuff. I'm wondering if it could be a sideband from something. I listened and I couldn't hear anything but white noise when it happens. I'm wondering if cavity filters and pre-amps will help.

    MTTN Node

    Greentop is getting a new tower too. There will not be internet up at the mountain, so we need to find a place to transmit to. We should be able to hit just about anything in Knoxville, Maryville or Pigeon Forge; is there a preference?


    Update from James:

    I have only one update for GPS. At MAIR, we've switched from using Mid-Valley's Internet to the Public Water Safety District (PWSD) #1 Internet. This is a wired connection through the building and not a wireless shot like we had with Mid-Valley. The wireless equipment is still in place. MAIR's receiver-side antenna, the MV-side WAP, and the MV-size antenna and coax are all still there and can be recovered at a later date. According to Chris, the guys at Mid-Valley are willing to let us switch back to them if necessary in the future.

    Need to do spend the GPS pm money by february (i.e. do the preventive maintenance).

    James has a very nice SOH website at

    Most monuments need a new paint job and weed control. Mineral Area Colege is the top priority.

    There may be an issue with the NetR8 stopping satellite tracking at temperatures below -5C. Ain't that special. Presumably those in the west are applying heat and there will be a fix forthcoming from trimble.

    Need to replace older GPS-100 supply systems.

    These stations still need to be steinerized: CVMS, MACC, HCES, MAIR, NWCC.

    STLE, NMKM, and RLAP all need a charger upgrade. They are currently working (and have been for a long time) so this is not necessarily a top priority.

    AG Network

    Now that the AG network has a maintenance budget, Jim will order one of the web enabled power switches that has a configurable watchdog timer and a spare set of Avalan radios.

    vent all cabinets.

    Install network WatchDog Timers. Meremonte uses iboot. Is he talking about the ones from dataprobe?

    ARRA Upgrades

    CPCT is delayed until January. Greg and Jim have a new plan that considerably simplifies power and hardware aquisition and assembly is in progress.

    BCRT, GMG, and GTTN along with the 3 TBD non-ARRA ET upgrades will be done in the spring.

    All replaced DM24's and CMG40T's will be donated to Bob for distribution to his Argentinian colleagues. These donations are "as-is".



    NSMP Station List.

    Due to remodeling, we pulled K2 1738 from Firestation #2 in Dyersburg, TN in February 2009. It is in the shop with accessories.

    We pulled the k2 at Obion (station 2460) because the building it was located in is being torn down.


    The seisnet group on umdrive is at You will need your uuid and password.

    Parker's old Suburban was sold on gov deals and our cut was about $1800. Chris is checking on doing the same with old blue and, much to David's chagrin, 148. Funds will go toward a new truck. Chris will begin specing the new vehicle (should it be a pickup with a shell or another suburban, or a panel truck, or something else?).

    The pink palace display now includes a heli connection for MPHB. Need to retrieve any remaining hardare (e.g. antenna and reciever on roof).